JPH09160527A - Method for displaying image data at corrected tint and density - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display at an optimum tint and density an image involved in merchandise information, without being affected by the characteristics or adjustments of a display device. SOLUTION: A standard image is sampled, and for the standard image, images that slightly differ in tint and density from one another step by step are produced using a sample-producing parameter and displayed in parallel. When either of the images that is supposed to be optimum is selected, corrections at which the tint and density of the image are determined are stored. When the images are displayed thereafter, those corrected for tint and density using the stored corrections are displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device capable of displaying color image data, and more particularly to a display device provided with a mechanism for correcting the color tone and shading of image data.

[0002]

2. Description of the Related Art Conventionally, image data stored in a CD-ROM or the like has been displayed on a display device such as a personal computer (PC). However, due to the characteristics of the display, the color tone and shade of the image data may not be displayed correctly. In a display device such as a PC, the brightness and contrast of the display screen can be adjusted by operating the adjustment knob, but it is not possible to adjust the color tone of each of the three primary colors of red, green, and blue. It is usually not possible. Further, even when a display device capable of adjusting color tones such as a color television receiver is used, it is often necessary to see the displayed image data and adjust to correct colors.

[0003]

Therefore, the conventional display device has the following problems to be solved depending on the form of use. For example, a CD-received from a vendor
2. Description of the Related Art A commodity transaction system in which a consumer displays image data stored in a commodity catalog stored in a ROM on a display device such as a home PC to select a commodity is becoming widespread.

When a product is ordered using such a system, the color and texture differ between the product image displayed on the display device such as a PC when selecting the product and the product actually delivered. It was often felt to be disappointing and often dissatisfied with the ordering consumer.

[0005]

In order to solve the above-mentioned problems, the present invention provides a color tone / shade of image data in a color tone / shade correction display method of image data in a display device capable of color display of image data. For instructing correction, means for calculating information relating to the tone and shade of the image data based on the instructed correction value, and a plurality of image data having different shades and shades are generated from the result of the calculation. A means for displaying, a means for selecting the most suitable image data out of the plurality of displayed image data, and a means for storing information relating to the color tone and shading of the selected image data, When displaying various image data, the color tone and the shading are corrected based on the stored information and displayed. That.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an example of an operation terminal constituting a commodity trading system. Operation terminal 2
Reference numeral 1 denotes a processor (CPU) 1 for performing various processes, and a memory (MEM) for temporarily storing information to be processed.
2, a display device (DSP) 3 for displaying information, a voice output device (SND) 4 for outputting a voice, an external storage device (DS) for storing programs to be executed and information necessary for processing.
K) 5, a controller (CTL) 6 for the user to instruct the operation, a non-volatile memory (NVRAM) 7 that retains the stored contents even when the power is turned off, a clock (TIMER) 8 that manages time, a public Communication device (M
ODEM) 9 and the like.

Here, a display for a computer or a general television is used as the display device 3, a hard disk or a CD-ROM is used as the external storage device 5, and a computer keyboard is used as the control controller 6. A mouse, a control pad of a computer game machine, or the like is used, and the above-described configuration has a hardware configuration equivalent to that of a general personal computer, computer game machine, or the like.

FIG. 2 is a block diagram showing an example of a host computer that constitutes the commodity trading system. The host computer 22 is a processor (CPU) that performs various processes.
11, a memory (MEM) 12 for temporarily storing information to be processed, an external storage device (DSK) 13 for storing a program to be executed and information necessary for processing, a communication device connected to a public network or the like ( MODEM) 14 and the like.

FIG. 3 is a block diagram showing the overall configuration of the commodity trading system. The commodity trading system includes an operation terminal 21 operated by a user, a plurality of operation terminals 21 and a public network 23.
It is composed of a host computer 23 connected via the above. Next, the outline of the transaction in the above-described commodity transaction system will be described. As the product information, information provided by a CD-ROM is used, or information transmitted via a public network is stored in a hard disk and used.

The product information is composed of information such as characters, images, voices, videos, etc., and is stored as a data file in a specific format which is digitized in advance. The file format may be a standard format typified by SGML or the like, or may be a dedicated format that can be processed by an operation terminal that refers to product information.

Here, assuming that the product information is provided on the CD-ROM, the product information is read from the CD-ROM, the information is reproduced according to the format stored by the processor 1, and displayed on the display device 3. Or output as voice to the voice output device 4. Usually, a plurality of items of merchandise information are stored in the CD-ROM, and they are switched and displayed in accordance with the operation of the control controller 6 by the user or a predetermined order.

When the user refers to the product information and finds a product that he / she wants to purchase, he / she operates the control controller 6 to select and purchase the product. The processor 1 creates a message for ordering a product according to the user's selection operation, and the host computer 2 via the communication device 9.
Send to 2. The transmitted electronic message is notified via the communication device 14 on the host computer 22 side, the notified electronic message is processed by the processor 11, and the external storage device 1
It is stored in 3rd place, etc., and the order is completed.

Here, in the image in the product information, the color tone and shade of the actual product may not be displayed correctly due to the characteristics and adjustment of the display device 3. Therefore, the operation terminal described with reference to FIG. 1 is equipped with a color tone / shade correction display function so that the color tone and shade can be adjusted without operating the adjustment knobs and the like of the display device 3.

The first embodiment of the color tone and shading correction display function will be described below. FIG. 4 is an explanatory diagram showing the concept of a color image. Color image is 2
It consists of points arranged in a dimension (this point is called a pixel). Then, each pixel has respective values in the three primary colors of RGB.

The RGB value of each pixel is, for example, 0 to 2
It is represented by a numerical value up to 55, and is set such that the closer it is to 0, the darker it is, and the closer it is to 255, the brighter it is. For example, R
If each value of GB is [255,0,0], it is displayed in red,
If it is [255, 255, 255], it will be displayed in white. Further, when a process of adding 10 to the value of the R component of each pixel forming the image is performed, the entire image becomes reddish than the original image. A similar method can be used to change the tone of the entire image. Also, if the same value is added to each of the RGB components, the entire image becomes bright. Further, not only addition but also multiplication can be used to adjust image contrast and the like.

As described above, by utilizing the fact that the color tone and shade of an image can be adjusted by changing the RGB values of each pixel, the tone and shade can be changed little by little with respect to the standard image. In order to create the image, the processor 1 described with reference to FIG. 1 calculates and changes each value of RGB of each pixel forming the standard image using the sample creation parameter. Then, on the display device 3, the standard image and the image in which the color tone and the gradation are gradually changed step by step are displayed side by side.

FIG. 5 is an explanatory diagram showing an example of a color tone / shade selection image. Note that, in FIG. 5, the RGB values are changed by the same value, that is, an image in which the shade is changed is used, and the shade changes are represented by hatching intervals in the drawing. In addition, it is assumed that the frame drawn with a thick line is a selection frame and the image in this selection frame is the currently selected image.

While viewing this display, the user compares it with a photograph or the like prepared separately as a standard and selects the most appropriate one. The selection is performed using the control controller 6. FIG. 6 is an explanatory diagram showing an example of the function of the control controller 6, and here, the control pad of the game machine will be described as an example.

For example, pressing the "left arrow" button moves the selection frame to the left, and pressing the "right arrow" button moves the selection frame to the right. When the button assigned to "OK" is pressed, the image enclosed by the selection frame is selected at this time. Here, when the "OK" button is pressed in the state shown in FIG. 5, the image of "-1" is selected. The control controller 6
The function of can be realized by a keyboard or mouse of a personal computer.

The processor 1 then selects this selected-
The value of 1 is stored in the non-volatile memory 7. This value is the difference between the display device 3 to be displayed and the image at the time of capturing, and serves as a parameter for correcting the difference. After that, when displaying an image, the processor 1 reads this value from the non-volatile memory 7 and uses this value as a parameter to perform a calculation to correct the color tone and shading of the image to be displayed, and display the color tone on the display device 3. Display the image with the shading corrected. In FIG. 5, the image in which the shade is changed is displayed, but the value for correcting the color tone can be determined by the same function. For adjusting the color tone, for example, by calculating only for red, "reddish"
You can generate an image and make color adjustments for red.

FIG. 7 is an explanatory diagram showing another example of a color tone / shade selection image. As shown in FIG.
Change the parameter calculated on each axis to change the dimension, for example, change the horizontal to change red and the vertical to change blue,
By selecting the most suitable image from the displayed images, it is possible to determine a plurality of parameters at one time.

FIG. 8 shows the color tone of the above-described first embodiment.
It is a logic block diagram of a grayscale correction display function. Assuming that the product information is stored in the CD-ROM, the processor 1 first reads the standard image from the set CD-ROM. With respect to this standard image, the processor 1 performs an operation for correcting the color tone and the lightness and shade using the parameters for sample preparation in the image calculation unit 1a, and the display device 3 gradually adjusts the color tone and the lightness and shade to the standard image. The images that are changed little by little are displayed side by side. The calculation and display here may be either one for obtaining one parameter described in FIG. 5 or one for obtaining a plurality of parameters described in FIG. 7.

The user sees this display and operates the control controller 6 to select an image that he or she thinks is most suitable. Then, the processor 1 stores in the nonvolatile memory 7 a correction value that determines the color tone or shade of the selected image. After that, when displaying the image in this CD-ROM, the CD
-When the image in the product information is read from the ROM, the processor 1 reads the correction value from the non-volatile memory 7,
The image calculation unit 1a uses this correction value as a parameter to perform a calculation for correcting the color tone and shade of the image to be displayed, and displays the image with the corrected tone and shade on the display device 3.

As described above, according to the color tone / shade correction display function of the first embodiment of the present invention, images in which the color tone and shade are gradually different from the standard image are displayed side by side. Then, by selecting the image that seems to be optimal from among these, it was decided to obtain correction values for color tone and shade, so it is not affected by the characteristics and adjustment of the display device,
Product information can be displayed in the correct color and shade.

FIG. 9 is a logical block diagram showing a second embodiment of the color tone / shade correction display function. Product information is CD
Processor 1, if stored in ROM
Captures the first standard image from the set CD-ROM. With respect to the first standard image, the processor 1 performs a calculation for correcting the color tone and shading in the image computing unit 1a by using the parameters for sample creation, and displays the color tone and shading on the display device 3 on the standard image. The images that are gradually changed step by step are displayed side by side. The calculation and display here may be either one for obtaining one parameter described in FIG. 5 or one for obtaining a plurality of parameters described in FIG. 7.

The user sees this display and operates the control controller 6 to select an image that he or she thinks is most suitable. Then, the processor 1 temporarily stores, in the memory 2, a correction value that determines the color tone or shade of the selected image. Next, the processor 1 captures the second standard image from the CD-ROM. For this second standard image, processor 1
Performs a calculation for correcting the color tone and shading by using the parameter for sample preparation in the image calculation unit 1a, and the display device 3
The images in which the color tone and shade are gradually changed step by step with respect to the standard image are displayed side by side. The calculation and display here may be either one for obtaining one parameter described in FIG. 5 or one for obtaining a plurality of parameters described in FIG. 7.

The user sees this display and operates the control controller 6 to select an image that he / she thinks is most suitable. Then, the processor 1 temporarily stores, in the memory 2, a correction value that determines the color tone or shade of the selected image. Then, the processor 1 calculates the average value of the correction values obtained by the two executions by the average calculation unit 1b and stores it in the nonvolatile memory 7 as the correction value.

After that, when the image in the CD-ROM is displayed, when the image in the product information is fetched from the CD-ROM, the processor 1 reads the correction value from the non-volatile memory 7, and the image calculation unit 1a uses the correction value. The correction value is used as a parameter to perform a calculation for correcting the color tone or shade of the image to be displayed, and the image whose color tone or shade is corrected is displayed on the display device 3.

As described above, according to the color tone / shading correction display function of the second embodiment of the present invention, different standard images are used, and the correction values obtained from the respective standard images are averaged for correction. Since the value is used, a more correct correction value can be obtained without being affected by the viewpoint of the displayed object. In the second embodiment, the correction is performed twice, but a correct correction value can be obtained by performing the correction a plurality of times while changing the standard image.

FIG. 10 is a logical block diagram showing a third embodiment of the color tone / shade correction display function. Product information is C
If it is stored in the D-ROM, the processor 1 takes in the standard image from the set CD-ROM. For this standard image, processor 1
The image calculation unit 1a performs a calculation for correcting the color tone and shade using the parameters for sample preparation, and displays the images in which the tone and shade are gradually changed with respect to the standard image side by side on the display device 3. The calculation and display here may be either one for obtaining one parameter described in FIG. 5 or one for obtaining a plurality of parameters described in FIG. 7.

The user looks at this display and operates the control controller 6 to select an image that he or she thinks is most suitable. Then, the processor 1 stores a correction value for determining the color tone or shading of the selected image in the non-volatile memory 7 by adding data associating the correction value with the CD-ROM. When there are a plurality of CD-ROMs, the above-described processing is performed for each CD-ROM to obtain a correction value, and data for associating the correction value with the CD-ROM is added to the correction value and the nonvolatile memory 7 is added. To store.

After that, when displaying the image in the CD-ROM, when the image in the product information is fetched from the CD-ROM, the processor 1 reads the correction value of the corresponding CD-ROM from the non-volatile memory 7, and the image is read. The calculation unit 1a uses this correction value as a parameter to perform a calculation for correcting the color tone and shade of the image to be displayed, and displays the image with the corrected tone and shade on the display device 3.

As described above, according to the color tone / shade correction display function of the third embodiment of the present invention, a plurality of C
Even when the D-ROM is used, it is possible to obtain the correction value of the color tone and the light and shade suitable for each CD-ROM. Here, since the function of each of the above-described embodiments can be realized by the operation terminal described in FIG. 1, these embodiments can be realized by a personal computer or a game machine.

In each of the above-mentioned embodiments, the product information is stored in the CD-ROM and provided, but it may be provided via the public network.
In this case, the standard image data is provided via the public network, and the operation terminal side creates an image in which the tone and shade are gradually changed from the standard image using the parameters for sample creation. Display these side by side,
The correction value is obtained by selecting the image that seems to be optimal from these, and stored in the non-volatile memory to display the image of product information that will be sent via the public network thereafter. In doing so, it is possible to display an image in which the tone and shade have been corrected using the stored correction values as parameters.

[0035]

As described above, according to the present invention, the standard image and the image in which the color tone and the shade are gradually changed step by step are displayed side by side, and the optimum image is selected from these. By obtaining the correction value by selecting the image that seems to be possible and storing this correction value, when the image of the product information is displayed thereafter, the stored correction value is used as a parameter to correct the color tone and shade. The displayed image can be displayed, and the product information can be displayed in the correct color tone and shade without being affected by the characteristics or adjustment of the display device.

Further, it is not necessary to adjust each display,
Operation becomes easy.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an operation terminal that constitutes a commodity trading system.

FIG. 2 is a block diagram showing an example of a host computer that constitutes a commodity trading system.

FIG. 3 is a block diagram showing the overall configuration of a commodity trading system.

FIG. 4 is an explanatory diagram showing the concept of a color image.

FIG. 5 is an explanatory diagram showing an example of a color tone / shade selection image.

FIG. 6 is an explanatory diagram showing an example of functions of a control controller.

FIG. 7 is an explanatory diagram showing another example of a color tone / shade selection image.

FIG. 8 is a logical block diagram of a color tone / shade correction display function according to the first embodiment.

FIG. 9 is a logical block diagram showing a second embodiment of a color tone / shade correction display function.

FIG. 10 is a logical block diagram showing a third embodiment of a color tone / shade correction display function.

[Explanation of symbols]

 1 Processor 1a Image Operation Unit 3 Display Device 5 External Storage Device 6 Control Controller 7 Nonvolatile Memory

Claims (3)

[Claims] 1. In a correction display method of color tone / shade of image data in a display device capable of color display of image data, means for instructing correction of color tone / shade of image data, and the correction value instructed Based on the means for calculating information relating to the color tone and shade of the image data, a means for generating and displaying a plurality of image data having different shades and shades from the result of the calculation, among the plurality of displayed image data Means for selecting the most suitable image data, and means for storing information relating to the color tone and shading of the selected image data, when displaying new image data, the stored information A correction display method of the color tone and shade of image data, which is characterized by correcting the tone and shade based on the display. 2. The color tone of the image data according to claim 1.
In the grayscale correction display method, a plurality of image data having different color tones and grayscales are generated,
Means for repeating the process of selecting the optimum image data a plurality of times out of the displayed plurality of image data, and the average of the information relating to the color tone and shade of each optimum image data obtained by the plurality of processes. And a correction display method of the color tone / shade of the image data, wherein when the new image data is displayed, the color tone and the shading are corrected based on the obtained information. 3. The color tone of the image data according to claim 1.
In the grayscale correction display method, a plurality of image data having different color tones and grayscales are generated,
Of the plurality of displayed image data, a means for storing a plurality of pieces of information relating to the tone and shade of the optimum image data obtained by the process of selecting the optimum image data is provided, and when displaying the image data, A color tone / shade correction display method for image data, wherein color tone and shade are corrected and displayed based on information corresponding to image data to be displayed from the stored information.