JP2008275933A - Image display method and image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display method for suppressing occurrence of jaggies and a color fringe of a character image, etc. while suppressing the change of a color of a natural image in an image display device having pixel arrangement in which arrangement of pixels is shifted between the adjacent lines. <P>SOLUTION: The image display method for combining natural image data with character image data to display an image on the image display device of pixel arrangement in which positions of the pixels are shifted between the adjacent lines, includes: a step of performing luminance correction processing to the character image data; and a step of combining the character image data to which the luminance correction processing is performed with the natural image data. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image display method and an image display apparatus, and more particularly to an image display method for combining and displaying a natural image and a character image on a display panel in which the arrangement of pixels is shifted between adjacent rows. The present invention relates to the image display device used.

  The image display device having a delta arrangement has a configuration in which pixels are shifted by a pitch of 1.5 pixels for each row. Accordingly, any of the R, G, and B pixels is surrounded by pixels of different colors, so that the color mixture becomes natural and is suitable for displaying a natural image. In addition, since the delta color filter can realize a relatively high resolution even under a condition where the number of pixels is small, it is used in a small image display device such as a digital camera or a digital video.

  However, when a character image is displayed in a display device using a color filter with a delta arrangement, jaggedness (jaggy) occurs at the edge of the character due to the pixel arrangement being shifted between adjacent rows. There is a problem. There is also a problem that a color edge occurs along a black character line. Such problems related to jaggies and color fringes are particularly likely to occur in image display devices that display a character image simultaneously with a natural image display, such as a digital camera.

Therefore, in order to improve the display quality of the character image in the delta arrangement, an image processing method for creating suitable delta arrangement image data from the image data corresponding to the pixel electrode in the stripe arrangement has been proposed (for example, Patent Documents). 1).
JP 2006-221125 A

  In the image processing method described in Patent Document 1, gamma processing is uniformly performed on delta array image data created from stripe array image data. For this reason, in the portion where the character image is displayed, jaggy and color fringes that occur at the boundary of the character can be reduced, and the character can be displayed clearly. However, there is a problem that in the portion where the natural image is displayed, the color of the entire image changes due to the influence of the gamma processing.

  The present invention has been made against the background of such circumstances, and an object of the present invention is to provide natural image data and character image data on an image display device having a pixel arrangement in which the pixel arrangement is shifted between adjacent rows. It is to provide an image display method and an image display apparatus capable of suppressing the occurrence of jaggy, color fringe, etc. while suppressing the change in the color of the natural image when the image is displayed by combining the images. .

  An image display method according to a first aspect of the present invention is an image display that displays an image by combining natural image data and character image data on an image display device having a pixel arrangement in which the positions of pixels are shifted in adjacent rows. The method includes a step of performing luminance correction processing on the character image data, and a step of combining character image data subjected to the luminance correction processing with the natural image data. As a result, it is possible to suppress the occurrence of jaggies, color fringes, and the like of the character image while suppressing changes in the color of the natural image.

  The image display method according to the second aspect of the present invention is the image display method described above, wherein a plurality of adjacent subpixel image data corresponding to a plurality of colors are adjacent in the same row before the step of performing the luminance correction process. Of subpixel image data, and averaging processing is performed based on a plurality of adjacent subpixel image data of the same color among the subpixel image data thus held, whereby one pixel data in each of a plurality of colors And generating the natural image data and the character image data, respectively. Thereby, it is possible to suppress the occurrence of jaggy, color fringe, and the like of the character image while suppressing a change in the color of the natural image by a simple method.

The image display method according to a third aspect of the present invention is the image display method described above, wherein the averaging processing is performed by calculating an arithmetic coefficient of ((1-x ₁ ) / 2 x ₁ (1-x ₁ ) / 2). The calculation process which applies the 1st matrix filter which has is included. Thereby, a display characteristic can be improved simply.

The image display method according to the fourth aspect of the present invention is an image display method described above, performs arithmetic processing for x ₁ is applied to the first matrix filter is 0.3 <x 1 _<0.6. Thereby, the display characteristics can be further improved.

  An image display method according to a fifth aspect of the present invention is the image display method described above, wherein the luminance correction process is a gamma process. Thereby, a display characteristic can be improved simply.

  In the image display method according to a sixth aspect of the present invention, in the above image display method, the averaging process is a calculation process different between the adjacent first row and the second row. As a result, a higher quality display can be performed.

The image display method according to a seventh aspect of the present invention is the above image display method, wherein the arithmetic processing performed in the first row is ((1-x ₂ ) / 2 x ₂ (1-x ₂ ) / The second matrix filter having the calculation coefficient of 2) is applied, and the calculation process performed in the second row has the calculation coefficient of (1 / 2−y ₃ y ₃ y ₃ 1 / 2−y ₃ ). A third matrix filter is applied. Thereby, the display characteristics can be further improved.

An image display method according to an eighth aspect of the present invention is the image display method described above, wherein x ₂ is 0.2 <x ₂ <0.6, and y ₃ is 0.2. An arithmetic process for applying the third matrix filter satisfying <y ₃ <0.6 is performed. Thereby, it is possible to further improve the display characteristics.

  An image display method according to a ninth aspect of the present invention is the image display method described above, wherein the arrangement of the display elements is a delta arrangement. The present invention is particularly effective in such a case.

  An image display device according to a tenth aspect of the present invention includes a display element having a pixel arrangement in which pixels are shifted in adjacent rows, a luminance correction processing unit that performs a luminance correction process on the character image data, and the natural image. And a synthesis processing unit that synthesizes the character image data subjected to the luminance correction processing with the data. As a result, it is possible to suppress the occurrence of jaggies, color fringes, and the like of the character image while suppressing changes in the color of the natural image.

  An image display device according to an eleventh aspect of the present invention is the above image display device, wherein a memory for holding a plurality of adjacent image data in the same row among subpixel image data corresponding to a plurality of colors, Arithmetic processing for generating the character image data and the natural image data by generating one pixel data in each of a plurality of colors based on a plurality of adjacent image data of the same color among the held sub-pixel image data It further has a part. Thereby, it is possible to suppress the occurrence of jaggy, color fringe, and the like of the character image while suppressing a change in the color of the natural image by a simple method.

An image display device according to a twelfth aspect of the present invention is the above image display device, wherein the calculation processing unit is a calculation coefficient of ((1-x ₁ ) / 2 x ₁ (1-x ₁ ) / 2). The first matrix filter having Thereby, a display characteristic can be improved simply.

The image display apparatus according to the thirteenth aspect of the present invention is the image display apparatus described above, the first matrix filter are those _{x 1} is _0.3 <x 1 <0.6. Thereby, the display characteristics can be further improved.

  An image display device according to a fourteenth aspect of the present invention is the above image display device, wherein the brightness correction processing unit performs gamma processing. Thereby, a display characteristic can be improved simply.

  An image display device according to a fifteenth aspect of the present invention is the image display device as described above, wherein the arithmetic processing unit performs different arithmetic processing in the first row and the second row adjacent to the display element. It is. As a result, a higher quality display can be performed.

In the image display device according to a sixteenth aspect of the present invention, in the above image display device, the arithmetic processing performed in the first row is ((1-x ₂ ) / 2 x ₂ (1-x ₂ ) / The second matrix filter having the calculation coefficient of 2) is applied, and the calculation process performed in the second row has the calculation coefficient of (1 / 2−y ₃ y ₃ y ₃ 1 / 2−y ₃ ). A third matrix filter is applied. Thereby, the display characteristics can be further improved.

An image display device according to a seventeenth aspect of the present invention is the above image display device, wherein x ₂ is 0.2 <x ₂ <0.6, and y ₃ is 0.2. An arithmetic process for applying the third matrix filter satisfying <y ₃ <0.6 is performed. Thereby, the display characteristics can be further improved.

  An image display device according to an eighteenth aspect of the present invention is the image display device described above, wherein the pixel array in the display element is a delta array. The present invention is particularly effective in such a case.

  According to the present invention, when an image is displayed by synthesizing natural image data and character image data on an image display device having an arrangement in which the arrangement of pixels is shifted between adjacent rows, the change in color of the natural image is displayed. It is possible to provide an image display method and an image display apparatus that can suppress the occurrence of jaggy, color fringes, and the like while suppressing the above.

  Embodiments to which the present invention can be applied will be described below. The following description is to describe the embodiment of the present invention, and the present invention is not limited to the following embodiment.

  An image display apparatus according to an embodiment of the present invention will be described with reference to FIGS. Here, an active matrix liquid crystal display device will be described as an example of the image display device. FIG. 1 is a block diagram of a liquid crystal display device 100 according to the present embodiment. As shown in FIG. 1, the liquid crystal display device 100 according to the present embodiment includes a liquid crystal display element 101, a natural image memory 102, a character image memory 103, an MPU 104, a timing controller 105, and the like. In the present embodiment, an example using a liquid crystal display element 101 having a delta arrangement is shown. In the present invention, luminance correction processing is performed on the image data for delta arrangement of the character image. Here, a case where gamma processing is performed will be described. FIG. 2 is a schematic diagram for explaining the arrangement of RGB color filters, pixel electrodes, and wiring.

  The liquid crystal display element 101 displays an image by combining the character image data and the natural image data. The liquid crystal display element 101 has a display area composed of a plurality of pixels. The liquid crystal display element 101 has a configuration in which liquid crystal is sandwiched between a TFT (Thin Film Transistor) array substrate (not shown) and a counter substrate (not shown) arranged to face each other. On the TFT array substrate, gate lines (scanning lines) are formed in the horizontal (X) direction and source lines (signal lines) are formed in the vertical (Y) direction, and TFTs are located near the intersections of the gate lines and the source lines. Is provided. In addition, a plurality of pixel electrodes are formed in a matrix between the gate line and the source line. The gate of the TFT is connected to the gate line, the source is connected to the source line, and the drain is connected to the pixel electrode. On the other hand, a common electrode and R (red), G (green) and B (blue) color filters are formed on the counter substrate. The common electrode is actually a transparent electrode formed on the substantially entire surface of the counter substrate so as to face the pixel electrode.

  In this embodiment, the color filter formed on the counter substrate is a conventionally known delta array. As shown in FIG. 2, the RGB color filters are arranged in correspondence with the pixel electrodes forming the display area. That is, three color filters of RGB are periodically arranged in this order in the X direction, and the first color filter row L1 (odd color filter row) and the color filter row L1 in the Y direction. A second color filter row (an even-numbered color filter row) is formed in which the RGB color filters are arranged in this order in the X direction in the same manner as the first color filter row L1. ing. Further, the first color filter row L1 and the second color filter row are arranged so as to be shifted in the X direction by 1.5 pixels. For example, B pixels in even rows are arranged between adjacent R and G pixels in odd color filter columns L1. Therefore, any of the R, G, and B pixels is surrounded by pixels of different colors, so that the color mixture is natural.

  On the array substrate, pixel electrodes are formed at positions corresponding to the RGB color filters configured as described above. That is, the first pixel electrode column corresponding to the first color filter column L1 and the second pixel electrode column corresponding to the second color filter column L2 are arranged so as to be shifted in the X direction by 1.5 pixels. Is done. In addition, the third pixel electrode column adjacent to the second pixel electrode column in the −Y direction is arranged so as to be shifted in the −X direction by 1.5 pixels from the second pixel electrode column. That is, the third pixel electrode row is configured such that the first pixel electrode row is translated in the −Y direction. Therefore, the pixel electrodes that form the display region are shifted by 1.5 pixels to the left and right between the odd and even rows.

  Each of the source lines SL1, SL2,... Extends in the Y direction while being bent in a crank shape. Only the pixel electrodes for the color filters of the same color are connected to the same source line. Therefore, each source line is configured to supply a display signal of any one of RGB. In this embodiment, the source line extending in the Y direction while being refracted into a crank shape is used, but the present invention is not limited to this. For example, the one that extends in the Y direction while meandering in a curved shape can be used.

  The natural image memory 102 stores natural image data such as landscapes and portraits. On the other hand, the character image memory 103 stores character image data such as characters and line drawings. Note that the natural image data and the character image data are converted from the stripe arrangement image data into the delta arrangement image data by the method disclosed in Japanese Patent Application Laid-Open No. 2006-221125. For example, the liquid crystal display device 100 according to the present embodiment includes the data conversion processing unit 110 illustrated in FIG.

  FIG. 3 is a block diagram for explaining the data conversion processing unit 110 according to the present embodiment. The data conversion processing unit 110 includes an input processing unit 111 to which image data for stripe arrangement is input, an arithmetic processing unit 112 for performing arithmetic processing for converting the input image data for stripe arrangement into image data for delta arrangement, and for three pixels. A pixel memory 113 for holding the image data, an output processing unit 114 for outputting the image data signal for delta arrangement after the arithmetic processing, and the like.

  The input processing unit 111 transfers the image data for stripe arrangement input to the arithmetic processing unit 112. The image data for stripe arrangement for three adjacent pixels among the transferred image data is held in the pixel memory 113. That is, image data for 9 subpixels is held at a time. Thereafter, the arithmetic processing unit 112 performs arithmetic processing (averaging processing) for each of R (red), G (green), and B (blue) subpixel image data for three subpixels. Thereby, the image data for delta arrangement is generated based on the image data for stripe arrangement. The calculated delta array image data is sequentially transferred to the output processing unit 114. The arithmetically processed natural image and character image delta arrangement image data are stored in the natural image memory 103 and the character image memory 103, respectively. The character image memory 103 stores the display position and size of the character image.

The smoothing filter used in the arithmetic processing unit 112 has a 1 × 3 matrix configuration. As a result, the amount of image data temporarily stored for arithmetic processing is equivalent to 3 pixels, so that the circuit scale can be reduced. Therefore, a circuit for image processing can be mounted even in a small image display device such as a digital camera. In the present embodiment, a 1 × 3 matrix filter having an arithmetic coefficient of ((1-x ₁ ) / 2 x ₁ (1-x ₁ ) / 2) is used as the smoothing filter used in the arithmetic processing unit 112. . In the matrix filter used in the present embodiment, the calculation coefficient x ₁ is preferably in the range of 0.3 <x ₁ <0.6. By setting it as such a range, the jaggy and the color edge which generate | occur | produce in the boundary of a character when displaying a character image can be reduced.

  Note that, as a method of creating the delta arrangement image data from the stripe arrangement image data, different arithmetic processing may be performed in the odd and even lines. That is, arithmetic processing is performed using image data of 3 pixels for odd rows and 4 pixels for even rows. Therefore, the pixel memory 113 holds the image data for stripe arrangement for three or four pixels that are sequentially adjacent. Of the held stripe arrangement image data, averaging processing is performed using stripe image data of the same color, and delta arrangement image data of a natural image and a character image is generated.

  In this case, a 1 × 3 matrix filter and a 1 × 4 matrix filter are used as the smoothing filters used in the arithmetic processing unit 112. For example, when performing the averaging process for odd rows, the pixel memory 113 holds the image data for stripe arrangement for 3 pixels and performs the averaging process using a 1 × 3 matrix filter. On the other hand, when the averaging process for even rows is performed, the pixel memory 113 holds the image data for stripe arrangement for four pixels and performs the averaging process using a 1 × 4 matrix filter.

As a 1 × 3 matrix smoothing filter used in the odd-numbered rows, a filter with an operation coefficient of ((1−x ₂ ) / 2 × ₂ (1−x ₂ ) / 2) is used. In addition, as the 1 × 4 smoothing filter used in the even-numbered rows, a filter having an arithmetic coefficient of (1 / 2−y ₃ y ₃ y ₃ 1 / 2−y ₃ ) can be used. The calculation coefficients of the two smoothing filters are preferably in a range where x ₂ is 0.2 <x ₂ <0.6 and y ₃ is 0.2 <y ₃ <0.6. By setting it as such a range, the problem of the jaggy and the color edge which generate | occur | produce in the boundary of a character when displaying a character image can be further reduced.

  The delta array image data respectively stored in the natural image memory 102 and the character image memory 103 is output to the MPU 104. The MPU 104 transmits the image data for delta arrangement of the natural image and the character image to the timing controller 105. The MPU 104 also outputs to the timing controller 105 an On / Off control signal for controlling On / Off of the character image, a selection signal for selecting the character image, and a character image location setting signal for determining the display position of the character image. . FIG. 5 shows some of various signals output from the MPU. In FIG. 5, DCLK is a clock signal, HD is a horizontal synchronization signal, DENA is an enable signal, and DATA is natural image data. As shown in FIG. 5, a character image On / Off control signal, a selection signal, and a character image location setting signal are embedded in a blanking period unnecessary for displaying natural image data.

  The timing controller 105 performs gamma processing, which is luminance correction processing, only on character image data. Then, the timing controller 105 synthesizes the character image data that has been subjected to gamma processing and the natural image data. Therefore, in the present embodiment, the timing controller 105 is a luminance correction unit that corrects the luminance of character image data, and is a synthesis processing unit that performs synthesis processing of character image data subjected to gamma processing and natural image data. .

As gamma processing,
I _out = 255 (I _in / 255) ^γ
A general gamma curve expressed by the following formula can be applied. Here, I _in indicates the gradation of the input signal, and I _out indicates the gradation of the output signal. FIG. 4 shows an example of a gamma curve with γ = 1.0, γ = 2.0, and γ = 3.0. In the case of a normally black liquid crystal display element 101 that performs black display at gradation 0 and white display at gradation 255, if the value of γ is greater than 1.0, as shown in FIG. An output signal whose overall brightness is lower than the input signal is output. That is, an input signal in a portion with low luminance can be an output signal with lower luminance. When black display is performed with gradation 0 and white display is performed with gradation 255, black characters can be clearly displayed by setting the value of γ to be larger than 1.0. Therefore, deterioration of image quality can be suppressed and better display can be performed. Note that the gamma curve is not limited to that described above, and various shapes can be used. On the other hand, natural image data is not subjected to gamma processing. For this reason, with respect to the natural image display region, it is possible to solve problems such as jaggies and color edges while maintaining a natural color.

  The timing controller 105 outputs, to the liquid crystal display element 101, display data obtained by combining a natural image that has not been subjected to gamma processing and a character image that has been subjected to gamma processing. As a result, the liquid crystal display element 101 can clearly display a character image, and can perform a high-quality display in which a natural image maintains a natural color and solves problems such as jaggies and color edges. .

  Here, an image display method according to the present embodiment will be described with reference to FIGS. FIG. 6 is a flowchart for explaining the display method according to the present embodiment. FIG. 7 is a diagram for explaining a method for synthesizing a natural image and a character image. FIG. 7A is a diagram showing natural image data, FIG. 7B is a diagram showing a character image, and FIG. 7C is a diagram in which a character image is synthesized with the natural image. Here, it is assumed that the natural image has L rows × N columns as shown in FIG. 7A, and the character image has L rows × M columns as shown in FIG. 7B. A case where a character image is synthesized from the a-th column to the a + M-th column of the natural image will be described. Here, a = 3. In FIG. 6, the row is indicated by y and the column is indicated by x.

  As shown in FIG. 6, first, the calculation is started from the line y = 1 (step S1). Then, when the calculation corresponding row y = 1, it is determined whether or not the calculation corresponding column x is a ≦ x ≦ a + M (step S2). If NO in step S2 (x ≦ a, a + M ≦ x), natural image A is selected (step S3). Specifically, natural images A1 and A2 are selected in the first and second columns. On the other hand, if YES in step S2 (a ≦ x ≦ a + M), character image B is selected (step S4). Specifically, the character image B1 is selected in the third column.

  Then, the above-described gamma processing is performed on the selected character image data (step S5). Thereafter, the selected natural image and the character image subjected to the gamma processing are synthesized (step S6). Thereby, the synthesis process of y = 1st line is completed (step S7).

  After that, a line obtained by adding one line to the calculation corresponding line is newly set as the calculation corresponding line y = 1 + 1 = 2 (step S8). Then, it is determined whether or not the new calculation corresponding row y = 2 is smaller than the L row (step S9). If the calculation corresponding row y = 2 is smaller than the L row (YES in step S9), the process returns to step S2 to determine whether the calculation corresponding column x is a ≦ x ≦ a + M. Then, the above steps 2 to 8 are repeated. Thereafter, when the calculation corresponding line y becomes larger than the L line, the calculation for one screen is completed.

  As described above, by performing averaging processing using adjacent subpixel image data for stripe arrangement of the same color for 3 pixels or 4 pixels to generate image data for delta arrangement, jaggies and colors Edge problems can be reduced. On the other hand, in generating the image data for delta arrangement, since the image data of the pixels included in other rows is not referred to, the occurrence of image blur can be suppressed. Further, by performing gamma processing on the character image data, the character image can be sharpened and a higher quality display can be performed. Furthermore, since the natural image is not subjected to gamma processing, changes in the color of the natural image can be suppressed.

  Note that the data conversion processing unit 110 may be provided with an error processing unit in a case where the image data after image processing becomes a negative value. For example, when 256 gradation display is possible, the image data for delta arrangement after image processing must be a value within the range of 0-255. However, there are cases where the output delta array image data has a negative value. In such a case, the error processing section outputs 0 delta array image data. If the output delta array image data exceeds 255, all the image data can be 255.

  In addition, here, a delta-aligned liquid crystal panel is used for explanation, but the present invention is not limited to this. If the pixel positions of the RGB color filters are shifted in two adjacent rows, display performance can be improved by applying the present invention. Further, the amount of deviation in the X direction of the pixel positions in the odd and even rows of the color filter may not be 0.5 pixels. The image processing method according to the present invention can be used for various image display devices such as PDP and organic EL. Furthermore, in the above-described example, the luminance correction processing is performed in the timing controller 105, but the luminance correction processing of character image data can also be performed in the MPU 104.

It is a figure which shows the structure of the image display apparatus which concerns on embodiment. It is a figure which shows the structure of the display element which concerns on embodiment. It is a figure which shows the structure of the data conversion process part which concerns on embodiment. It is a figure which shows the example of the gamma curve which concerns on embodiment. It is a figure which shows a part of display signal which concerns on embodiment. It is a flowchart for demonstrating the image display method which concerns on embodiment. It is a figure for demonstrating the composition method of the image which concerns on embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Liquid crystal display device 101 Liquid crystal display element 102 Natural image memory 103 Character image memory 104 MPU
105 timing controller 110 data conversion processing unit 111 input processing unit 112 arithmetic processing unit 113 pixel memory 114 output processing unit

Claims (18)

An image display method for displaying an image by combining natural image data and character image data on an image display device having a pixel array in which the pixel positions are shifted in adjacent rows,
Performing luminance correction processing on the character image data;
Combining the natural image data with the character image data subjected to the luminance correction processing.   Prior to the step of performing the brightness correction process, a plurality of adjacent subpixel image data in the same row among the subpixel image data corresponding to a plurality of colors is held, and a plurality of the subpixel image data held A step of generating one pixel data for each of a plurality of colors to generate the natural image data and the character image data by performing an averaging process based on adjacent sub-pixel image data of the same color; Item 2. The image display method according to Item 1. The image display according to claim 2, wherein the averaging process includes an arithmetic process that applies a first matrix filter having an arithmetic coefficient of ((1−x ₁ ) / 2 x ₁ (1−x ₁ ) / 2). Method. 4. The image display method according to claim 3, wherein an arithmetic process is performed to apply the first matrix filter in which x ₁ is 0.3 <x ₁ <0.6.   The image display method according to claim 1, wherein the brightness correction process is a gamma process.   The image display method according to claim 2, wherein the averaging process is a calculation process that is different between adjacent first and second rows. The calculation process performed in the first row applies a second matrix filter having a calculation coefficient of ((1-x ₂ ) / 2 x ₂ (1-x ₂ ) / 2),
The image display according to claim 6, wherein the arithmetic processing performed in the second row applies a third matrix filter having an arithmetic coefficient of (1 / 2−y ₃ y ₃ y ₃ 1 / 2−y ₃ ). Method. An arithmetic process that applies the second matrix filter in which x ₂ is 0.2 <x ₂ <0.6 and the _third matrix filter in which y ₃ is 0.2 <y ₃ <0.6 The image display method according to claim 7 to be performed.   The image display method according to claim 1, wherein a pixel array in the display element is a delta array. A display element having a pixel array in which pixels are shifted in adjacent rows;
A luminance correction processing unit for performing luminance correction processing on the character image data;
An image display device comprising: a synthesis processing unit that synthesizes the natural image data with the character image data subjected to the luminance correction processing. A memory for holding a plurality of adjacent image data in the same row among sub-pixel image data corresponding to a plurality of colors;
The character image data and the natural image data are generated by generating one pixel data in each of a plurality of colors based on a plurality of adjacent image data of the same color among the sub-pixel image data held in the memory. The image display apparatus according to claim 10, further comprising an arithmetic processing unit that performs the operation. The image display device according to claim 10, wherein the arithmetic processing unit includes a first matrix filter having an arithmetic coefficient of ((1−x ₁ ) / 2 x ₁ (1−x ₁ ) / 2). The image display device according to claim 12, wherein x _{1 of} the first matrix filter is 0.3 <x ₁ <0.6.   The image display device according to claim 10, wherein the luminance correction processing unit performs gamma processing.   The image display device according to claim 12, wherein the arithmetic processing unit performs different arithmetic processing in the first row and the second row adjacent to each other in the display element. The calculation process performed in the first row applies a second matrix filter having a calculation coefficient of ((1-x ₂ ) / 2 x ₂ (1-x ₂ ) / 2),
The image display according to claim 15, wherein the arithmetic processing performed in the second row applies a third matrix filter having an arithmetic coefficient of (1 / 2−y ₃ y ₃ y ₃ 1 / 2−y ₃ ). apparatus. An arithmetic process that applies the second matrix filter in which x ₂ is 0.2 <x ₂ <0.6 and the _third matrix filter in which y ₃ is 0.2 <y ₃ <0.6 The image display apparatus of Claim 16 to perform.   The image display device according to claim 10, wherein a pixel array in the display element is a delta array.

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