CN107800868A - A kind of method for displaying image and mobile terminal - Google Patents

Abstract

The present invention provides an image display method and a mobile terminal, wherein the method includes: starting a front-facing camera to obtain a user's eye image in real time; determining the current distance between the user's eye and the screen according to the human eye image distance; based on the current distance and preset user vision parameters, adjust the sharpness of the original image displayed on the screen; replace the original image with the adjusted image and display it on the screen. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users.

Description

Image display method and mobile terminal

technical field

The present invention relates to the technical field of mobile terminals, in particular to an image display method and a mobile terminal.

Background technique

With the accelerated development of technology and informatization, smartphones have become the most important tool for people to obtain news, broaden their horizons, and entertain them. Therefore, eyesight and the display of images by smartphones are becoming more and more closely related.

In practical applications, for users with normal eyesight, when using the mobile phone with naked eyes, the images displayed on the screen can be clearly seen with the normal distance between the eyes and the mobile phone screen; but for nearsighted users, when using the mobile phone with naked eyes, the mobile phone needs to be far away The images displayed on the screen can only be seen clearly when the user is close; for hyperopic users, when using the mobile phone with naked eyes, the mobile phone needs to be far away from the eyes to see the images displayed on the screen clearly.

It can be seen that for nearsighted or hyperopic users, it is inconvenient to use the mobile phone with naked eyes, which reduces the enthusiasm and efficiency of users.

Contents of the invention

The image display method and mobile terminal provided by the embodiments of the present invention solve the problem that it is inconvenient to see the displayed content clearly when using a mobile phone to browse with naked eyes for myopia or hyperopia, which leads to the problem of reducing user efficiency.

On the one hand, the embodiment of the present invention discloses an image display method applied to a mobile terminal, including:

Start the front camera to obtain the user's eye image in real time;

determining the current distance between the user's eyes and the screen according to the human eye image;

Adjusting the sharpness of the original image displayed on the screen based on the current distance and preset user vision parameters;

and displaying the adjusted image on the screen instead of the original image.

On the other hand, the embodiment of the present invention also discloses a mobile terminal, including:

The human eye image acquisition module is used to start the front camera to acquire the user's human eye image in real time;

A current distance determination module, configured to determine the current distance between the user's eyes and the screen according to the human eye image acquired by the human eye image acquisition module;

A sharpness adjustment module, configured to adjust the sharpness of the original image displayed on the screen based on the current distance determined by the current distance determination module and the preset user vision parameters;

The image display module is used to replace the original image with the image adjusted by the sharpness adjustment module and display it on the screen.

In yet another aspect, the embodiment of the present invention also discloses a mobile terminal, including a processor, a memory, and a computer program stored in the memory and operable on the processor, and the computer program is executed by the processor When executed, the steps of the image display method described in any one of the above items are realized.

In the embodiment of the present invention, start the front camera to acquire the user's human eye image in real time; determine the current distance between the user's eyes and the screen according to the human eye image; parameter, adjust the sharpness of the original image displayed on the screen; replace the original image with the adjusted image and display it on the screen. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the specific embodiments of the present invention are enumerated below.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

FIG. 1 shows a flow chart of the steps of an image display method in Embodiment 1 of the present invention;

FIG. 2 shows a flowchart of steps of an image display method in Embodiment 2 of the present invention;

FIG. 3 shows a structural block diagram of a mobile terminal in Embodiment 3 of the present invention;

FIG. 4 shows a structural block diagram of a mobile terminal in Embodiment 4 of the present invention;

FIG. 5 shows a structural block diagram of a mobile terminal in Embodiment 5 of the present invention;

FIG. 6 shows a structural block diagram of a mobile terminal in Embodiment 6 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An image display method and a mobile terminal provided by the present invention will be described in detail below by enumerating several specific embodiments.

Embodiment one

Referring to FIG. 1 , it shows a flow chart of the steps of an image display method according to Embodiment 1 of the present invention, which may specifically include the following steps:

Step 101, start the front camera to acquire the user's eye image in real time.

The application scenario of the embodiment of the present invention is: a user with poor eyesight cannot clearly see images on the screen of a mobile terminal. For example, farsightedness, nearsightedness, or other vision problems. It can be understood that the embodiments of the present invention may be applicable to various types of mobile terminals, including but not limited to tablet computers, smart phones, and the like.

Specifically, when the nearsighted or hyperopic user cannot clearly see the screen of the mobile terminal with naked eyes, the image definition is adjusted by pressing an image definition adjustment button on the mobile terminal. It can be understood that the eyesight of a nearsighted user or a hyperopic user wearing glasses is normal, so there is no need to start adjusting the sharpness.

In the embodiment of the present invention, the human eye image is acquired in real time so as to ensure that the user can adjust the image definition in real time when the user keeps moving the screen.

Step 102: Determine the current distance between the user's eyes and the screen according to the human eye image.

Specifically, the distance between the human eye and the screen can be obtained through the human eye depth information in the human eye image.

Step 103, based on the current distance and preset user vision parameters, adjust the clarity of the original image displayed on the screen.

Wherein, the user's vision parameters are a series of vision-related parameters pre-set by the user on the mobile terminal. For example, the user is short-sighted or far-sighted, the distance at which the user sees the clearest image with naked eyes, etc. In practical applications, a setting item of the user's visual acuity parameter can be newly added in the setting interface of the mobile terminal, so as to receive the visual acuity parameter input by the user of the mobile terminal. Of course, this setting item can provide modification and deletion functions.

The embodiment of the present invention performs different processing for users with different vision conditions, so that users with various vision problems can see images on the screen clearly with naked eyes. For example, for short-sighted users, when the current distance is greater than the distance corresponding to the user's naked-eye view of a clear image, increase the image clarity; Spend.

Specifically, adjusting the definition of the image is to adjust the image more clearly, by adjusting the grayscale value or brightness value of the brightness of each pixel in the image.

Step 104, replacing the original image with the adjusted image and displaying it on the screen.

Replace the original image with a clearer image so that the user can see a clearer image at the same current distance. It is more convenient to use for nearsighted or farsighted users who do not want to wear glasses.

In the embodiment of the present invention, start the front camera to acquire the user's human eye image in real time; determine the current distance between the user's eyes and the screen according to the human eye image; parameter, adjust the sharpness of the original image displayed on the screen; replace the original image with the adjusted image and display it on the screen. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users.

Embodiment two

Referring to FIG. 2 , it shows a flow chart of the steps of an image display method according to Embodiment 2 of the present invention, which may specifically include the following steps:

Step 201, save preset user vision parameters, the user vision parameters at least include user vision marks, optimal distances, preset distance sets, and optimal sharpness corresponding to each preset distance.

Wherein, the user's vision mark indicates that the user is nearsighted, farsighted or other vision problems, and the system may provide options for the user to choose.

The optimal distance is the distance between the eyes and the screen when the user sees the images on the screen clearly with naked eyes. The system may provide an input box for the user to input the optimal distance.

The preset distance is a plurality of distances entered in advance by the user, and records the best clarity when the user sees the image on the screen clearly at this distance. The system provides preset distances, and can also provide the function of adding custom distances for users to input multiple preset distances and corresponding optimal clarity. In practical applications, the user can adjust the image sharpness at multiple preset distances, and when the best sharpness is reached, record the preset distance and the best sharpness.

It can be understood that functions such as modification and deletion can be provided for the above-mentioned user vision parameters.

Step 202, start the front camera to acquire the user's eye image in real time.

For this step, reference may be made to the detailed description of step 101, which will not be repeated here.

Step 203, acquiring depth information of the human eye image.

In the computer vision system, the image is expressed as a three-dimensional scene, and for the depth image, the gray value of the pixel in the depth image can be used as the distance between the point and the camera. In practical applications, depth information can be obtained by indirect estimation of photometric features, light and dark features, etc. of the image.

Step 204, calculate the current distance between the user's eyes and the screen according to the depth information.

Specifically, when the user's face is parallel to the screen, the depth information of the two eyes is the same, so the depth information is the current distance between the eyes and the current screen; when the user's face is not parallel to the screen, the depth information of the two eyes is different , so that the depth information is the average value of the depth information of the two eyes.

In the embodiment of the present invention, when the depth information of the two eyes is different, the weight of the dominant eye can also be increased according to the weight value used, so as to improve the clarity as much as possible. It can be understood that the weights of the two are the same when taking the average value.

Step 205, if it is determined according to the user's vision parameters that the current distance is outside the clear visible range, acquire the original image displayed on the screen.

In the embodiment of the present invention, after the user starts to adjust the image definition, the user moves the position of the mobile terminal, which may change the current distance between the screen and the eyes, so that the image is adjusted only when the current distance exceeds the visible range. clarity.

For example, for a myopic user, the optimal distance is 10 cm. After the user starts the adjustment operation, the distance between the user's eyes and the screen is 15 cm, so the system starts the adjustment; if the user moves the mobile terminal to a distance of 8 cm from the eyes, it is not necessary to adjust back to the original clarity. If the user initially places the mobile terminal at a distance of 8 cm from the eyes, the system will not start to adjust the image definition; if the user moves the mobile terminal from 8 cm to 15 cm, the system will monitor in real time that the current distance is greater than the optimal distance to automatically adjust the image sharpness.

Optionally, in another embodiment of the present invention, step 205 includes substeps 2051 to 2052:

Sub-step 2051, if the user's vision mark in the vision parameters corresponds to the user's nearsightedness, then the current distance is greater than the optimal distance in the vision parameters, and the absolute value of the difference between the current distance and the optimal distance is greater than the preset value, it is determined that the current distance is outside the clearly visible range.

Wherein, the preset value may be set according to an actual application scenario, which is not limited in the embodiment of the present invention. In practical applications, for myopic users, when the user's eyes are within a certain range behind the optimal distance from the screen, images on the screen can be seen clearly.

Sub-step 2052, if the user's vision mark in the vision parameters corresponds to the user's hyperopia, then the current distance is smaller than the optimal distance in the vision parameters, and the absolute value of the difference between the current distance and the optimal distance is greater than the preset value, it is determined that the current distance is outside the clearly visible range.

In practical applications, for myopic users, when the user's eyes are within a certain range before the optimal distance from the screen, images on the screen can be seen clearly.

Wherein, the preset value is the same as the preset value in sub-step 2053, and of course it can also be different.

In step 206, the best definition corresponding to the current distance is obtained from preset user vision parameters.

Specifically, the preset distance closest to the current distance is selected, and the best definition corresponding to the preset distance is used as the best definition of the current distance.

Step 207: Gradually increase the brightness value and/or grayscale value of each pixel in the original image according to the preset step distance, and calculate the sharpness corresponding to each step distance.

Wherein, the larger the preset step size, the smaller the calculation complexity and the lower the calculation accuracy; the smaller the preset step size, the greater the calculation complexity and the higher the calculation accuracy. It can be understood that the preset step distance can be set according to the actual application scenario and the processing capability of the central processing unit of the mobile terminal, which is not limited in the embodiment of the present invention.

The sharpness can be calculated according to the adjacent pixel gray variance method, Sobel edge detection operator, Robert edge detection operator, etc. The embodiment of the present invention does not limit the calculation formula of the sharpness.

Step 208, when the absolute value of the difference between the sharpness and the best sharpness is smaller than a preset value, stop increasing the brightness value and/or grayscale value of each pixel in the original image.

Wherein, the preset value may be set according to an actual application scenario, which is not limited in the embodiment of the present invention.

In the embodiment of the present invention, when the difference between the sharpness and the best sharpness is greater than the preset value, continue to adjust the sharpness of the image according to the preset step distance, that is, repeat step 207 until the adjusted sharpness The absolute value of the difference from the best sharpness is smaller than the preset value.

Step 209, replacing the original image with the adjusted image and displaying it on the screen.

For this step, reference may be made to the detailed description of step 104, which will not be repeated here.

In the embodiment of the present invention, start the front camera to acquire the user's human eye image in real time; determine the current distance between the user's eyes and the screen according to the human eye image; parameter, adjust the sharpness of the original image displayed on the screen; replace the original image with the adjusted image and display it on the screen. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users. In addition, the clarity of the image can also be flexibly adjusted by gradually adjusting the brightness value and/or gray value of the image pixel, as well as the user's visual acuity parameters.

Embodiment Three

Referring to FIG. 3 , it shows a structural block diagram of a mobile terminal according to Embodiment 3 of the present invention.

The mobile terminal 300 includes: a human eye image acquisition module 301, a current distance determination module 302, a sharpness adjustment module 303, and an image display module 304.

The functions of each module and the interaction between each module are introduced in detail below.

The human eye image acquiring module 301 is configured to start the front camera to acquire the user's eye image in real time.

The current distance determination module 302 is configured to determine the current distance between the user's eyes and the screen according to the human eye image acquired by the human eye image acquisition module.

The sharpness adjustment module 303 is configured to adjust the sharpness of the original image displayed on the screen based on the current distance determined by the current distance determination module and preset user vision parameters.

The image display module 304 is configured to replace the original image with the image adjusted by the sharpness adjustment module and display it on the screen.

In the embodiment of the present invention, start the front camera to acquire the user's human eye image in real time; determine the current distance between the user's eyes and the screen according to the human eye image; parameter, adjust the sharpness of the original image displayed on the screen; replace the original image with the adjusted image and display it on the screen. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users.

Embodiment 3 is a device embodiment corresponding to method embodiment 1. For detailed description, reference may be made to embodiment 1, which will not be repeated here.

Embodiment Four

Referring to FIG. 4 , it shows a structural block diagram of a mobile terminal according to Embodiment 4 of the present invention.

The mobile terminal 400 includes: a user parameter storage module 401, a human eye image acquisition module 402, a current distance determination module 403, a sharpness adjustment module 404, and an image display module 405.

The functions of each module and the interaction between each module are introduced in detail below.

The user parameter saving module 401 is configured to save preset user vision parameters, and the user vision parameters at least include a user vision mark, an optimal distance, a set of preset distances, and the best definition corresponding to each preset distance.

The human eye image acquiring module 402 is configured to start the front camera to acquire the user's eye image in real time.

The current distance determination module 403 is configured to determine the current distance between the user's eyes and the screen according to the human eye image acquired by the human eye image acquisition module. In the embodiment of the present invention, the above-mentioned current distance determination module 403 includes:

The depth information acquisition sub-module 4031 is configured to acquire the depth information of the human eye image.

The current distance calculation sub-module 4032 is configured to calculate the current distance between the user's eyes and the screen according to the depth information acquired by the depth information acquisition sub-module.

The sharpness adjustment module 404 is configured to adjust the sharpness of the original image displayed on the screen based on the current distance determined by the current distance determination module and preset user vision parameters. In the embodiment of the present invention, the above definition adjustment module 404 includes:

The original image acquisition sub-module 4041 is configured to acquire the original image displayed on the screen when it is determined according to the user's vision parameters that the current distance is outside the clearly visible range.

The optimal sharpness acquisition sub-module 4042 is configured to acquire the best sharpness corresponding to the current distance from preset user vision parameters.

The pixel adjustment sub-module 4043 is used to gradually increase the brightness value and/or gray value of each pixel in the original image acquired by the original image acquisition sub-module according to the preset step distance, and calculate the sharpness corresponding to each step distance.

End adjustment sub-module 4044, configured to stop increasing the brightness value of each pixel in the original image when the difference between the sharpness calculated by the pixel adjustment sub-module and the optimal sharpness is less than a preset value and/or grayscale values.

The image display module 405 is configured to replace the original image with the image adjusted by the sharpness adjustment module and display it on the screen.

Optionally, in another embodiment of the present invention, the above-mentioned original image acquisition submodule 4041 includes:

The first visual determination unit is configured to: if the user's vision mark in the vision parameters corresponds to the user's myopia, then the current distance is greater than the optimal distance in the vision parameters, and the difference between the current distance and the optimal distance is When the absolute value is greater than the preset value, it is determined that the current distance is outside the clearly visible range.

The second visual determination unit is configured to: if the user's vision mark in the vision parameters corresponds to the user's hyperopia, the current distance is smaller than the optimal distance in the vision parameters, and the difference between the current distance and the optimal distance is When the absolute value is greater than the preset value, it is determined that the current distance is outside the clearly visible range.

In the embodiment of the present invention, start the front camera to acquire the user's human eye image in real time; determine the current distance between the user's eyes and the screen according to the human eye image; parameter, adjust the sharpness of the original image displayed on the screen; replace the original image with the adjusted image and display it on the screen. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users. In addition, the clarity of the image can also be flexibly adjusted by gradually adjusting the brightness value and/or gray value of the image pixel, as well as the user's visual acuity parameters.

Embodiment 4 is an apparatus embodiment corresponding to method embodiment 2. For detailed description, reference may be made to embodiment 2, which will not be repeated here.

Embodiment five

Referring to FIG. 5 , it shows a structural block diagram of a mobile terminal according to Embodiment 5 of the present invention.

The mobile terminal 500 shown in FIG. 5 includes: at least one processor 501 , a memory 502 , at least one network interface 504 and a user interface 503 . Various components in the mobile terminal 500 are coupled together through the bus system 505 . It can be understood that the bus system 505 is used to realize connection and communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus and a status signal bus. However, the various buses are labeled bus system 505 in FIG. 5 for clarity of illustration.

Wherein, the user interface 503 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, and the like.

It can be understood that the memory 502 in the embodiment of the present invention may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Wherein, the non-volatile memory can be a read-only memory (Read-OnlyMemory, ROM), a programmable read-only memory (ProgrammableROM, PROM), an erasable programmable read-only memory (ErasablePROM, EPROM), an electrically erasable Programming read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (Random Access Memory, RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous Dynamic RAM (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DoubleDataRateSDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Connection Dynamic Random Access Memory (SynchlinkDRAM, SLDRAM) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DRRAM). The memory 502 of the systems and methods described in embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

In some implementations, the memory 502 stores the following elements, executable modules or data structures, or their subsets, or their extended sets: an operating system 5021 and an application program 5022 .

Among them, the operating system 5021 includes various system programs, such as framework layer, core library layer, driver layer, etc., for realizing various basic services and processing tasks based on hardware. The application program 5022 includes various application programs, such as a media player (MediaPlayer), a browser (Browser), etc., and is used to realize various application services. The program for realizing the method of the embodiment of the present invention may be included in the application program 5022 .

In the embodiment of the present invention, the mobile terminal 500 also includes a computer program stored in the memory 502 and operable on the processor 501. When the computer program is executed by the processor 501, the following steps are implemented: start the front-facing camera to acquire the user's information in real time. Human eye image; determine the current distance between the user's eyes and the screen according to the human eye image; adjust the clarity of the original image displayed on the screen based on the current distance and preset user vision parameters; adjust the Subsequent images replace the original images and are displayed on the screen. The methods disclosed in the foregoing embodiments of the present invention may be applied to the processor 501 or implemented by the processor 501 . The processor 501 may be an integrated circuit chip and has signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software. The above-mentioned processor 501 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or Transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the methods disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the above method in combination with its hardware.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSPDevice, DSPD), programmable logic device (ProgrammableLogicDevice, PLD ), Field-Programmable Gate Array (Field-Programmable GateArray, FPGA), general-purpose processor, controller, microcontroller, microprocessor, other electronic units for performing the functions described in this application, or a combination thereof.

For software implementation, the techniques described in the embodiments of the present invention may be implemented through modules (such as procedures, functions, etc.) that execute the functions described in the embodiments of the present invention. Software codes can be stored in memory and executed by a processor. Memory can be implemented within the processor or external to the processor.

Optionally, the processor 501 is further configured to adjust the sharpness of the original image displayed on the screen based on the current distance and preset user vision parameters, if it is determined according to the user vision parameters that the current distance is within When it is outside the clear visual range, obtain the original image displayed on the screen; obtain the best definition corresponding to the current distance from the preset user vision parameters; gradually increase each of the original images according to the preset step distance The brightness value and/or gray value of the pixel, and calculate the sharpness corresponding to each step; when the absolute value of the difference between the sharpness and the best sharpness is less than the preset value, stop increasing The brightness value and/or gray value of each pixel in the original image.

Optionally, the processor 501 is further configured to realize that when it is determined according to the user's vision parameters that the current distance is outside the clearly visible range, if the user's vision mark in the vision parameters corresponds to the user's nearsightedness, the current When the distance is greater than the optimum distance in the vision parameters, and the absolute value of the difference between the current distance and the optimum distance is greater than a preset value, it is determined that the current distance is outside the clear visual range; if the vision The user's vision mark in the parameter corresponds to the user's hyperopia, then the current distance is determined when the current distance is less than the optimal distance in the vision parameter, and the absolute value of the difference between the current distance and the optimal distance is greater than the preset value beyond the clear range of vision.

Optionally, the processor 501 is further configured to save preset user vision parameters before the step of starting the front-facing camera to obtain the user's eye image in real time, the user vision parameters at least including the user vision mark, the best distance, a set of preset distances, and the best sharpness corresponding to each preset distance.

Optionally, the processor 501 is further configured to acquire depth information of the human eye image when determining the current distance between the user's eyes and the screen according to the human eye image; Calculate the current distance between the user's eyes and the screen.

It can be seen that, in the embodiment of the present invention, the front camera is started to acquire the user's eye image in real time; the current distance between the user's eyes and the screen is determined according to the human eye image; based on the current distance and the preset The vision parameter of the user adjusts the sharpness of the original image displayed on the screen; and displays the adjusted image on the screen instead of the original image. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users. In addition, the sharpness of the image can be flexibly adjusted by gradually adjusting the brightness value and/or gray value of the image pixel, as well as the user's visual acuity parameters.

Embodiment six

FIG. 6 shows a schematic structural diagram of a mobile terminal according to Embodiment 6 of the present invention.

The mobile terminal in the embodiment of the present invention may be a mobile phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), or a vehicle-mounted computer.

The mobile terminal in FIG. 6 includes a radio frequency (Radio Frequency, RF) circuit 610 , a memory 620 , an input unit 630 , a display unit 640 , a processor 660 , an audio circuit 670 , a WiFi (Wireless Fidelity) module 680 , and a power supply 690 .

Wherein, the input unit 630 can be used to receive number or character information input by the user, and generate signal input related to the user setting and function control of the mobile terminal 600 . Specifically, in the embodiment of the present invention, the input unit 630 may include a touch panel 631 . The touch panel 631, also referred to as a touch screen, can collect user's touch operations on or near it (such as the user's operation on the touch panel 631 using any suitable object or accessory such as a finger, a stylus), and The specified program drives the corresponding connected device. Optionally, the touch panel 631 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and sends it to to the processor 660, and can receive and execute commands sent by the processor 660. In addition, the touch panel 631 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 631, the input unit 630 may also include other input devices 632, which may include but not limited to physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, etc. one or more of.

Wherein, the display unit 640 can be used to display information input by the user or information provided to the user and various menu interfaces of the mobile terminal 600 . The display unit 640 may include a display panel 641. Optionally, the display panel 641 may be configured in the form of an LCD or an organic light-emitting diode (Organic Light-Emitting Diode, OLED).

It should be noted that the touch panel 631 can cover the display panel 641 to form a touch display screen. When the touch display screen detects a touch operation on or near it, it is sent to the processor 660 to determine the type of the touch event, and then the processor 660 provides corresponding visual output on the touch display screen according to the type of the touch event.

The touch display screen includes an application program interface display area and a common control display area. The arrangement of the display area of the application program interface and the display area of the commonly used controls is not limited, and may be an arrangement in which the two display areas can be distinguished, such as vertical arrangement, left-right arrangement, and the like. The application program interface display area can be used to display the interface of the application program. Each interface may include at least one application program icon and/or interface elements such as widget desktop controls. The application program interface display area can also be an empty interface without any content. The commonly used control display area is used to display controls with a high usage rate, for example, application icons such as setting buttons, interface numbers, scroll bars, and phonebook icons.

Wherein the processor 660 is the control center of the mobile terminal 600, utilizes various interfaces and lines to connect the various parts of the whole mobile phone, by running or executing the software programs and/or modules stored in the first memory 621, and calling the software programs and/or modules stored in the second memory 621. The data in the memory 622 executes various functions of the mobile terminal 600 and processes data, so as to monitor the mobile terminal 600 as a whole. Optionally, the processor 660 may include one or more processing units.

In the embodiment of the present invention, by calling the software program and/or module stored in the first memory 621 and/or the data in the second memory 622, the processor 660 is used to start the front-facing camera to obtain the user's human eyes in real time. image; determine the current distance between the user's eyes and the screen according to the human eye image; adjust the clarity of the original image displayed on the screen based on the current distance and preset user vision parameters; adjust the adjusted An image is displayed on the screen in place of the original image.

Optionally, the processor 660 is further configured to adjust the sharpness of the original image displayed on the screen based on the current distance and the preset user vision parameters, if it is determined according to the user vision parameters that the current distance is within When it is outside the clear visual range, obtain the original image displayed on the screen; obtain the best definition corresponding to the current distance from the preset user vision parameters; gradually increase each of the original images according to the preset step distance The brightness value and/or grayscale value of the pixel, and calculate the sharpness corresponding to each step; when the absolute value of the difference between the sharpness and the best sharpness is less than the preset value, stop increasing The brightness value and/or gray value of each pixel in the original image.

Optionally, the processor 660 is further configured to realize that when it is determined according to the user vision parameters that the current distance is outside the clearly visible range, if the user vision flag in the vision parameters corresponds to the user's nearsightedness, the current When the distance is greater than the optimum distance in the vision parameters, and the absolute value of the difference between the current distance and the optimum distance is greater than a preset value, it is determined that the current distance is outside the clear visual range; if the vision The user's vision mark in the parameter corresponds to the user's hyperopia, then the current distance is determined when the current distance is less than the optimal distance in the vision parameter, and the absolute value of the difference between the current distance and the optimal distance is greater than the preset value beyond the clear range of vision.

Optionally, the processor 660 is also configured to save the preset user vision parameters before the step of starting the front camera to acquire the user's eye image in real time, the user vision parameters at least including the user vision mark, the best distance, a set of preset distances, and the best sharpness corresponding to each preset distance.

Optionally, the processor 660 is further configured to acquire depth information of the human eye image when determining the current distance between the user's eyes and the screen according to the human eye image; Calculate the current distance between the user's eyes and the screen.

In the embodiment of the present invention, start the front camera to acquire the user's human eye image in real time; determine the current distance between the user's eyes and the screen according to the human eye image; parameter, adjust the sharpness of the original image displayed on the screen; replace the original image with the adjusted image and display it on the screen. It realizes that near-sighted or far-sighted users can adjust the image clarity when using the mobile phone with naked eyes, thereby improving the enthusiasm and efficiency of users. In addition, the clarity of the image can also be flexibly adjusted by gradually adjusting the brightness value and/or gray value of the image pixel, as well as the user's visual acuity parameters.

As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The algorithms and displays presented herein are not inherently related to any particular computer, virtual system, or other device. Various generic systems can also be used with the teachings based on this. The structure required to construct such a system is apparent from the above description. Furthermore, the present invention is not specific to any particular programming language. It should be understood that various programming languages can be used to implement the content of the present invention described herein, and the above description of specific languages is for disclosing the best mode of the present invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, in order to streamline this disclosure and to facilitate an understanding of one or more of the various inventive aspects, various features of the invention are sometimes grouped together in a single embodiment, figure, or its description. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art can understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. Modules or units or components in the embodiments may be combined into one module or unit or component, and furthermore may be divided into a plurality of sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method or method so disclosed may be used in any combination, except that at least some of such features and/or processes or units are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will understand that although some embodiments described herein include some features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention. and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all functions of some or all components in the mobile terminal device according to the embodiments of the present invention. The present invention can also be implemented as an apparatus or an apparatus program (for example, a computer program and a computer program product) for performing a part or all of the methods described herein. Such a program for realizing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet site, or provided on a carrier signal, or provided in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means can be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

Those of ordinary skill in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed in the embodiments of the present invention can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (11)

1. An image display method applied to a mobile terminal, characterized in that the method comprises: Start the front camera to obtain the user's eye image in real time; determining the current distance between the user's eyes and the screen according to the human eye image; Adjusting the sharpness of the original image displayed on the screen based on the current distance and preset user vision parameters; and displaying the adjusted image on the screen instead of the original image. 2. The method according to claim 1, wherein the step of adjusting the clarity of the original image displayed on the screen based on the current distance and preset user vision parameters comprises: If it is determined according to the user's vision parameters that the current distance is outside the clearly visible range, acquire the original image displayed on the screen; Obtain the best definition corresponding to the current distance from preset user vision parameters; Gradually increase the brightness value and/or gray value of each pixel in the original image according to the preset step distance, and calculate the sharpness corresponding to each step distance; When the absolute value of the difference between the sharpness and the best sharpness is smaller than a preset value, stop increasing the brightness value and/or grayscale value of each pixel in the original image. 3. The method according to claim 2, wherein the step of determining that the current distance is outside the clearly visible range according to the user vision parameters comprises: If the user's vision mark in the vision parameters corresponds to the user's myopia, then the current distance is greater than the optimal distance in the vision parameters, and the absolute value of the difference between the current distance and the optimal distance is greater than a preset value, determine said current distance is outside the range of clear visibility; If the user's vision mark in the vision parameters corresponds to the user's hyperopia, then the current distance is less than the optimal distance in the vision parameters, and when the absolute value of the difference between the current distance and the optimal distance is greater than a preset value, determine The current distance is out of clear view. 4. The method according to claim 2, further comprising: Preset user vision parameters are saved, and the user vision parameters at least include a user vision mark, an optimal distance, a set of preset distances, and an optimal definition corresponding to each preset distance. 5. The method according to claim 1, wherein the step of determining the current distance between the user's eyes and the screen according to the human eye image comprises: Acquiring depth information of the human eye image; calculating the current distance between the user's eyes and the screen according to the depth information. 6. A mobile terminal, characterized in that, comprising: The human eye image acquisition module is used to start the front camera to acquire the user's human eye image in real time; A current distance determination module, configured to determine the current distance between the user's eyes and the screen according to the human eye image acquired by the human eye image acquisition module; A sharpness adjustment module, configured to adjust the sharpness of the original image displayed on the screen based on the current distance determined by the current distance determination module and the preset user vision parameters; The image display module is used to replace the original image with the image adjusted by the sharpness adjustment module and display it on the screen. 7. The mobile terminal according to claim 6, wherein the definition adjustment module comprises: The original image acquisition sub-module is used to acquire the original image displayed on the screen if it is determined according to the user vision parameters that the current distance is outside the clear visual range; The optimal sharpness acquisition sub-module is used to obtain the best sharpness corresponding to the current distance from the preset user vision parameters; The pixel adjustment sub-module is used to gradually increase the brightness value and/or gray value of each pixel in the original image acquired by the original image acquisition sub-module according to the preset step distance, and calculate the sharpness corresponding to each step distance; The end adjustment submodule is used to stop increasing the brightness value and sum of each pixel in the original image when the difference between the sharpness calculated by the pixel adjustment submodule and the optimal sharpness is less than a preset value / or grayscale values. 8. The mobile terminal according to claim 7, wherein the original image acquisition submodule comprises: The first visual determination unit is configured to: if the user's vision mark in the vision parameters corresponds to the user's myopia, then the current distance is greater than the optimal distance in the vision parameters, and the difference between the current distance and the optimal distance is When the absolute value is greater than the preset value, it is determined that the current distance is outside the clearly visible range; The second visual determination unit is configured to: if the user's vision mark in the vision parameters corresponds to the user's hyperopia, the current distance is smaller than the optimal distance in the vision parameters, and the difference between the current distance and the optimal distance is When the absolute value is greater than the preset value, it is determined that the current distance is outside the clearly visible range. 9. The mobile terminal according to claim 7, further comprising: The user parameter saving module is used to save preset user vision parameters, and the user vision parameters at least include user vision marks, optimal distances, preset distance sets, and optimal sharpness corresponding to each preset distance. 10. The mobile terminal according to claim 6, wherein the current distance determining module comprises: A depth information acquisition submodule, configured to acquire the depth information of the human eye image; The current distance calculation submodule is configured to calculate the current distance between the user's eyes and the screen according to the depth information acquired by the depth information acquisition submodule. 11. A mobile terminal, characterized by comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor, the The steps of the image display method described in any one of 1 to 5 are required.