CN116052603A - An image processing method, device and system - Google Patents

Abstract

The embodiment of the application discloses an image processing method, device and system. The device comprises: the segmentation module is used for dividing the original image into at least two partitions when the number of the backlight partitions of the backlight module is larger than the number of the partitions which can be processed by the backlight control chip, wherein the number of the partitions of each partition is smaller than or equal to the number of the partitions which can be processed by the backlight control chip; a determining module for determining backlight control data of each partition respectively; the processing module is used for obtaining the backlight control data corresponding to the original image in the backlight module according to the backlight control data of each partition; and the control module is used for controlling the display of the original image by utilizing the backlight control data of the original image.

Description

An image processing method, device and system

technical field

The embodiments of the present application relate to the field of display technology, in particular to an image processing method, device and system.

Background technique

Mini LED is a backlight technology for Liquid Crystal Display (LCD) screens. The backlight of the Mini LED screen is composed of many lamp beads. The part that needs to be bright is turned on, and the part that does not need to be bright is turned off. It can independently control the switch of the LED backlight, thereby improving the contrast of the display module.

With the development of Mini LED backlight technology, the demand for contrast is getting higher and higher, which requires more and more backlight partitions. If the number of backlight partitions that the main control chip needs to process reaches thousands, or even tens of thousands, it will be a huge problem. Increase the calculation amount of the main control chip, and at the same time, a larger memory storage space is required inside the chip to store calculation data, and a higher-performance CPU provides calculation services. However, the market demand for high partition display is indeed increasing, and a low-cost solution is urgently needed to solve the technical problem of high partition display.

Contents of the invention

In order to solve any of the above technical problems, embodiments of the present application provide an image processing method, device, and system.

In order to achieve the purpose of the embodiment of the present application, the embodiment of the present application provides an image processing device, including:

The segmentation module is used to divide the original image into at least two partitions when the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, wherein the number of partitions of each partition is less than or equal to the number of partitions that the backlight control chip can handle the number of partitions;

A determining module, configured to determine the backlight control data of each partition respectively;

A processing module, configured to obtain backlight control data corresponding to the original image in the backlight module according to the backlight control data of each partition;

A control module, configured to use the backlight control data of the original image to control the display of the original image.

An image processing method, comprising:

When the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, divide the original image into at least two partitions, wherein the number of partitions in each partition is less than or equal to the number of partitions that the backlight control chip can handle;

Determine the backlight control data for each partition separately;

Obtain the backlight control data corresponding to the original image in the backlight module according to the backlight control data of each partition;

The display of the original image is controlled by using the backlight control data of the original image.

An image processing system, characterized by comprising the above-mentioned image processing device, a backlight module, and a display panel; wherein both the backlight module and the display panel are connected to the image processing device.

One of the above technical solutions has the following advantages or beneficial effects:

When the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, the original image is divided into at least two partitions, wherein the number of partitions in each partition is less than or equal to the number of partitions that the backlight control chip can handle, so that the backlight The control chip can process all the blocks included in one partition at a time, and then respectively determine the backlight control data of each partition, and obtain the backlight corresponding to the original image in the backlight module according to the backlight control data of each partition. The control data uses the backlight control data of the original image to control the display of the original image, realize backlight control for higher partitions, and reduce the hardware cost of the backlight control chip.

Other features and advantages of the embodiments of the present application will be set forth in the following description, and partly become apparent from the description, or can be understood by implementing the embodiments of the present application. The objectives and other advantages of the embodiments of the present application can be realized and obtained through the structures particularly pointed out in the specification, claims and drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the technical solutions of the embodiments of the present application, and constitute a part of the description, together with the embodiments of the embodiments of the present application, they are used to explain the technical solutions of the embodiments of the present application, and do not constitute a technical solution to the embodiments of the present application limits.

Fig. 1 is the application schematic diagram of image processing method;

FIG. 2 is a schematic structural diagram of an image processing device provided in an embodiment of the present application;

Fig. 3 is the structural representation of control module 24 in the device shown in Fig. 2;

FIG. 4 is a schematic structural diagram of the acquisition unit 241 in the acquisition module 24 shown in FIG. 3;

Fig. 5 is another schematic structural view of the device shown in Fig. 2;

FIG. 6 is a flowchart of an image processing method provided in an embodiment of the present application;

FIG. 7 is a structural diagram of an image processing system provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of the application of the image processing method provided by the embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the embodiments of the present application and the features in the embodiments can be combined arbitrarily with each other.

Figure 1 is a schematic diagram of the application of the image processing method. As shown in Figure 1, the image processing system includes: System on Chip (SOC), Microcontroller Unit (MCU) and timing controller (timing controller, TCON); where:

The SOC is used to process the image to obtain the backlight control data and image compensation data of the image;

The MCU is connected to the SOC, and is used to control the switch of the light group in the backlight area by using the backlight control data of the image;

The TCON is connected to the SOC, and is used to control the display of the panel (Panel) by using the image compensation data of the image.

The SOC has a built-in backlight control strategy. The SOC backlight control strategy supports backlight control of 4*4 partitions. One frame of image is input to the SOC, and the initial backlight information (such as bright and dark data) is obtained after image content analysis. Based on the initial backlight The information can be obtained from the backlight control data of the lamp group in the backlight area (for example, the switch data of the lamp group), output to the external MCU, and then the LED driver (Driver) can control the switch and brightness of the backlight, and at the same time, the two sets of data Combined with the backlight light shape data, the backlight information is compensated accordingly, and then the image information is compensated, output to the TCON, and displayed on the panel (Panel) side synchronously, so as to achieve the information synchronization of the Panel and the backlight, and improve the contrast of the picture.

Since the built-in backlight control strategy of the SOC can only support 4*4 partitions, the corresponding storage space and computing power are limited, and the backlight control of higher partitions cannot be realized. If you continue to adopt the modified solution, you need to replace the SOC chip with a higher specification and import it for verification. The process is cumbersome, and at the same time brings about an increase in chip costs.

In order to solve the above problems, the application provides the following solutions:

FIG. 2 is a schematic structural diagram of an image processing device provided by an embodiment of the present application. As shown in Figure 2, the device includes a segmentation module 21, a determination module 22, a processing module 23 and a control module 24; wherein:

The segmentation module 21 is used to divide the original image into at least two partitions when the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, wherein the number of partitions of each partition is less than or equal to the number of partitions that the backlight control chip can handle. the number of partitions.

Specifically, by dividing the original image into at least two partitions, and the total number of blocks in each partition is less than or equal to the total number of blocks that can be processed by the backlight control chip, so that the backlight control chip can process all the blocks included in one partition at a time. number of blocks.

In an exemplary embodiment, the partition is determined according to the maximum value of the total number of blocks processed by the backlight control chip, so as to realize the maximum utilization of the processing capability of the backlight control chip.

For example, the total number of backlight partitions of the backlight module is 4*8, if the number of partitions that the backlight control chip can handle is 4*4, the original image can be divided into 2 partitions, wherein each partition The total number of blocks is 4*4.

Since the total number of blocks that each backlight control chip can handle is 4*4, and the total number of blocks in each partition is also 4*4, therefore, the backlight control chip can process all blocks in one partition at a time. The total number of blocks included.

The determining module 22 is connected with the switching module 21 and is used for determining the backlight control data of each partition respectively.

In an exemplary embodiment, each partition can be processed one by one, wherein the image processing method of each partition is as follows:

Extract the initial backlight information (such as brightness and darkness data) of the image data in the partition, and then based on the initial backlight information of the partition, the backlight control data of the lamp group in the backlight area of the partition (such as the switch data of the lamp group) can be obtained.

The processing module 23 is connected to the determination module 22, and is used to obtain the backlight control data corresponding to the original image in the backlight module according to the backlight control data of each partition;

A corresponding relationship between each partition and its own backlight control data may be established, and the sum of the backlight control data of all partitions may be used as the backlight control data corresponding to the original image in the backlight area.

For example, the total number of backlight partitions of the backlight module is 4*8, if the total number of blocks that the backlight control chip can handle is 4*4, the original image will be divided into two partitions, which are partition 1 and partition 2. The backlight control data of partition 1 is LED_Data1, and the backlight control data of partition 2 is LED_Data2. Since both LED_Data1 and LED_Data2 include backlight control data of 4*4 blocks, the sum of LED_Data1 and LED_Data2 includes backlight control data of 4*8 blocks, which is used as the backlight control data corresponding to the original image in the backlight module.

A control module 24, connected to the processing module 23, configured to control the display of the original image by using the backlight control data of the original image;

While using the display panel to display images, the control backlight module uses the backlight control data of the original image to perform backlight display.

The device provided by the embodiment of the present application, when the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, divides the original image into at least two partitions, wherein the number of partitions in each partition is less than or equal to the number of backlight control chips The number of partitions that can be processed, so that the backlight control chip can process all the blocks included in a partition at a time, and then respectively determine the backlight control data of each partition, and obtain the original image according to the backlight control data of each partition. The backlight control data corresponding to the backlight module uses the backlight control data of the original image to control the display of the original image, realize backlight control for higher partitions, and reduce the hardware cost of the backlight control chip.

The method provided by the embodiment of the present application is described below:

FIG. 3 is a schematic structural diagram of the control module 24 in the device shown in FIG. 2 . As shown in Figure 3, the control module 24 includes an acquisition unit 241 and a sending unit 242; wherein:

The obtaining unit 241 is configured to obtain image compensation data of the original image;

The sending unit 242 is configured to send a synchronization signal to both the backlight module and the display panel, so as to control the backlight module to use the backlight control data of the original image to perform backlight display; and control the display panel to use the The image compensation data of the original image is displayed on the image.

While obtaining the backlight control data of the original image, the image compensation data of the original image is also obtained, and by sending a synchronization signal to both the backlight module and the display panel, the backlight module uses the The backlight control data is used for backlight display, so that the display panel uses the image compensation data of the original image for image display.

FIG. 4 is a schematic structural diagram of the acquisition unit 241 in the acquisition module 24 shown in FIG. 3 . As shown in Figure 4, the control module 24 includes an acquisition unit 241, and the acquisition unit 241 includes an acquisition subunit 241a and a generation subunit 241b, wherein:

The obtaining subunit 241a is used to obtain the image compensation data of each partition by using the backlight control data of each partition;

The generating subunit 241b is configured to obtain image compensation data corresponding to the original image in the backlight module according to the image compensation data of each partition.

Since the backlight control chip can only process all the blocks included in one partition at a time, the image compensation data of a single partition can be determined according to the backlight control data of a single partition.

After the backlight control data of a subregion is determined, another process of the backlight control chip may be used to obtain image compensation data of the subregion based on the backlight control data, so as to improve data calculation efficiency. Alternatively, after the backlight control data of each subregion is completed, the image compensation data of each subregion is acquired separately.

In an exemplary embodiment, the acquisition subunit 241 is configured to perform background light compensation on the background light shape data corresponding to the partition in the backlight module according to the backlight control data of each partition, and perform background light compensation according to the backlight compensation data of the partition As a result, image compensation is performed on the image data in the partition to obtain image compensation data for the partition.

Among them, the image compensation data of each partition can be obtained through the following methods, including:

Compensate the backlight of the partition by using the initial backlight information and backlight control data of the partition; perform image compensation on the image of the partition based on the backlight compensation result in the partition, and obtain the backlight compensation data of the partition.

In an exemplary embodiment, the backlight control data and image compensation data of each partition are respectively determined in the following manner, including:

Select a partition as the target partition, respectively determine the backlight control data and image compensation data of the target partition, and then select another partition as the target partition, and so on, until the determination of the backlight control data and image compensation data of all partitions is completed until.

Since the total number of blocks in each partition is less than or equal to the total number of blocks that the backlight control chip can handle, the backlight control chip can process all the blocks included in a partition at a time. By processing each partition one by one, we can get The backlight control data and image compensation data of all partitions realize the purpose of processing high partitions by the backlight control chip.

FIG. 5 is another structural schematic diagram of the device shown in FIG. 2 . As shown in Figure 5, the device also includes:

The storage management module 25 is connected to the determination module 22 and is configured to store all partitions except the first one selected as the target partition in the storage space corresponding to the original image.

Since the capacity of the storage unit in the backlight control chip is designed according to the size of the original image that can be supported, the size of the partitions other than the target partition is smaller than the size of the original image, so the capacity of the storage unit does not need to be increased, and the cost will not increase .

FIG. 6 is a flowchart of an image processing method provided by an embodiment of the present application. As shown in Figure 6, the method includes:

Step 601, when the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, divide the original image into at least two partitions, wherein the number of partitions in each partition is less than or equal to the number of partitions that the backlight control chip can handle ;

Step 602, respectively determine the backlight control data of each partition;

Step 603, according to the backlight control data of each partition, obtain the backlight control data corresponding to the original image in the backlight module;

Step 604, using the backlight control data of the original image to control the display of the original image.

In the method provided by the embodiment of the present application, when the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, the original image is divided into at least two partitions, wherein the number of partitions in each partition is less than or equal to the number of backlight control chips The number of partitions that can be processed, so that the backlight control chip can process all the blocks included in a partition at a time, and then respectively determine the backlight control data of each partition, and obtain the original image according to the backlight control data of each partition. The backlight control data corresponding to the backlight module uses the backlight control data of the original image to control the display of the original image, realize backlight control for higher partitions, and reduce the hardware cost of the backlight control chip.

FIG. 7 is a structural diagram of an image processing system provided by an embodiment of the present application. As shown in FIG. 7 , the system includes the above-mentioned image processing device, a backlight module, and a display panel; wherein both the backlight module and the display panel are connected to the image processing device.

Optionally, the system also includes:

The first storage unit is connected to the image processing device and the backlight module respectively, and is used to store the backlight control data of each partition;

The second storage unit is connected to the image processing device and the display panel respectively, and is used for storing the image compensation data of each partition.

The backlight control data and the image compensation data of the original image are respectively stored in different storage units, which is convenient for the backlight module and the display panel to read.

Optionally, the image processing device is further configured to send a synchronization signal to the backlight module and the display panel;

The backlight module is further configured to read out the backlight control data of each partition stored in the first storage unit for backlight display after receiving the synchronization signal;

The display panel is further configured to read out the image compensation data of each partition stored in the second storage unit for image display after receiving the synchronization signal.

The image processing device can trigger the backlight module and the display panel to work simultaneously by sending the synchronous signal, so as to realize the simultaneous output of the backlight display and the image display, and realize the display output of the display screen.

FIG. 8 is a schematic diagram of the application of the image processing method provided by the embodiment of the present application. As shown in FIG. 8 , the above image processing device may be a SOC, and the built-in backlight control strategy of the SOC can only support 4*4 partitions. When image 1 is input to SOC, SOC divides image 1 into image 1A and image 1B on average, and first stores image 1B in the storage unit inside the backlight control chip, because the capacity of the storage unit of the backlight control chip is based on the supported image 1, while the size of image 1B is only half of that of image 1, the capacity of the storage unit does not need to be increased, and the cost will not increase. Prioritize image 1A to be transmitted to subsequent modules to obtain relevant image 1A backlight control data and store them in the external Flash 1, and combine the backlight light shape data to obtain image compensation data of image 1A, and store the image compensation data of image 1A in In the external Flash 2; then image 1B is extracted from the storage unit, and the backlight control data of image 1B is obtained and stored in Flash 1, and combined with the backlight light shape data, the image information compensation of image 1B is obtained, and the image of image 1B is compensated. The compensation data is stored in the external Flash 2. Finally, the SOC backlight control chip sends a synchronous Sync signal to the MCU and TCON. After receiving the signal, the MCU and TCON synchronously extract the information in Flash1 and Flash 2, and send them to the backlight and panel respectively to realize the synchronization of the display information of the backlight and the panel. Realize support for 4*4*2 partition scheme.

In the same way, when the image 2 is input to the SOC, the SOC divides the image 2 into image 2A, image 2B and image 2C on average, and first stores the image 2B and image 2C in the storage unit inside the backlight control chip, because the backlight control chip The capacity of the storage unit is designed according to the size of the image 2 that can be supported, and the size of the image 2B and image 2C is only 2/3 of that of the image 2, the capacity of the storage unit does not need to be increased, and the cost will not increase. First transfer the image 2A to the subsequent module to obtain the relevant image 2A backlight control data and store it in the external Flash 1, and combine the backlight light shape data to obtain the image compensation data of the image 2A, and store the image compensation data of the image 2A in In the external Flash 2; then the image 2B is extracted from the storage unit, and the backlight control data of the image 2B is obtained and stored in Flash 1, and combined with the backlight light shape data, the image information compensation of the image 2B is obtained, and the image of the image 2B is compensated. The compensation data is stored in the external Flash 2; then the image 2C is extracted from the storage unit to obtain the backlight control data of the image 2C and stored in Flash 1, and combined with the backlight light shape data, the image information compensation of the image 2C is obtained. The image compensation data of Image 2C is stored in the external Flash 2. Finally, the SOC backlight control chip sends a synchronous Sync signal to the MCU and TCON. After receiving the signal, the MCU and TCON synchronously extract the information in Flash 1 and Flash 2 and send them to the backlight and panel respectively to realize the synchronization of the display information of the backlight and the panel. Realize support for 4*4*3 partition scheme.

Based on the above processing of image 2, it can be seen that for the application scenario where the image is divided into more than 3 partitions, those skilled in the art can infer that each partition is processed one by one until all the partitions are processed, and then we can get All backlight control data and image compensation data for the image.

It can be seen from the above-mentioned embodiments that in the case of using an SOC backlight control chip that only supports X partitions, backlight control of 2X partitions can be realized. It has a wide range of application scenarios.

Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, the functional modules/units in the system, and the device can be implemented as software, firmware, hardware, and an appropriate combination thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Claims (10)

1. An image processing device, characterized in that, comprising: The segmentation module is used to divide the original image into at least two partitions when the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, wherein the number of partitions of each partition is less than or equal to the number of partitions that the backlight control chip can handle the number of partitions; A determining module, configured to determine the backlight control data of each partition respectively; A processing module, configured to obtain backlight control data corresponding to the original image in the backlight module according to the backlight control data of each partition; A control module, configured to use the backlight control data of the original image to control the display of the original image. 2. The device according to claim 1, wherein the control module comprises: an acquisition unit, configured to acquire image compensation data of the original image; A sending unit, configured to send a synchronization signal to both the backlight module and the display panel, so as to control the backlight module to use the backlight control data of the original image to perform backlight display, and to control the display panel to use the original image The image compensation data of the image is displayed as an image. 3. The device according to claim 2, wherein the acquiring unit comprises: The acquisition subunit is used to acquire the image compensation data of each partition by using the backlight control data of each partition; A generating subunit is used to obtain image compensation data corresponding to the original image in the backlight module according to the image compensation data of each partition. 4. The device according to claim 3, characterized in that: The acquisition subunit is used to perform background light compensation on the background light shape data corresponding to the partition in the backlight module according to the backlight control data of each partition, and perform image data on the image data in the partition according to the background light compensation result of the partition. Compensate to get the image compensation data of the partition. 5. The device according to claim 3, wherein the backlight control data and image compensation data of each partition are respectively determined in the following manner, including: Select a partition as the target partition, respectively determine the backlight control data and image compensation data of the target partition, and then select another partition as the target partition, and so on, until the determination of the backlight control data and image compensation data of all partitions is completed until. 6. The device according to claim 5, further comprising: The storage management module is configured to store all partitions except the first one selected as the target partition in the storage space corresponding to the original image. 7. An image processing method, characterized in that, comprising: When the number of backlight partitions of the backlight module is greater than the number of partitions that the backlight control chip can handle, divide the original image into at least two partitions, wherein the number of partitions in each partition is less than or equal to the number of partitions that the backlight control chip can handle; Determine the backlight control data for each partition separately; Obtain the backlight control data corresponding to the original image in the backlight module according to the backlight control data of each partition; The display of the original image is controlled by using the backlight control data of the original image. 8. An image processing system, characterized in that it comprises the image processing device, a backlight module, and a display panel as claimed in any one of claims 1 to 6; wherein the backlight module and the display panel are all compatible with the connected to the image processing unit. 9. The system according to claim 8, further comprising: The first storage unit is connected to the image processing device and the backlight module respectively, and is used to store the backlight control data of each partition; The second storage unit is connected to the image processing device and the display panel respectively, and is used for storing the image compensation data of each partition. 10. The system of claim 9, wherein: The image processing device is further configured to send a synchronization signal to the backlight module and the display panel; The backlight module is further configured to read out the backlight control data of each partition stored in the first storage unit for backlight display after receiving the synchronization signal; The display panel is configured to read out the image compensation data of each partition stored in the second storage unit for image display after receiving the synchronization signal.

Images