Display method and display device for image

A technology of a display device and a display method, which is applied in the directions of graphics and image conversion, image data processing, static indicators, etc., can solve the problems of difficult process of flat panel display and cannot improve the display image of flat panel display, and achieve the effect of improving image resolution

Active Publication Date: 2014-11-19
BOE TECH GRP CO LTD +1
5 Cites 10 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, as the size of pixels gets smaller and smaller, the process of making flat panel displays becomes more and more difficult
Therefore, the resolution of images displayed on flat ...
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Method used

A kind of image display method and the display device that the embodiment of the present invention provides, owing to according to the required display image resolution of frame to be displayed, each original pixel is divided into a plurality of virtual pixels; According to each virtual pixel The weight of each sub-pixel in the frame, the weight of each sub-pixel in the adjacent virtual pixels of the row and the received original image information of the frame to be displayed determine the virtual image information of each virtual pixel when displaying the image of the frame to be displayed; like this, Each virtual pixel borrows each sub-pixel in the adjacent virtual pixels to display the color it lacks, which can realize the same display function as each original pixel, thereby improving the image resolution of the frame to be displayed; and, because according to the determined According to the rule of minimum difference between the virtual image information and the original image information, the display image information required by each sub-pixel in each original pixel is determined; according to the determined display image information and the required display image resolution display, it can be better accurately restore the image of the frame to be displayed.
[0053] Since the distance between the two points is sufficiently small relative to the viewing angle of the human eye, the two points will be regarded as one point by the human eye. Therefore, the human eye can regard a plurality of adjacent sub-pixels belonging to different pixels as one highlights. Based on this, the above-mentioned image display method provided by th...
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Abstract

The invention discloses a display method and a display device for an image. Each original pixel is divided into a plurality of virtual pixels according to the image resolution required by the frame to be displayed; the virtual image information of each virtual pixel during displaying of the frame to be displayed is determined according to weight of each sub pixel of each virtual pixel, weight of each sub pixel of virtual pixels in adjacent rows, and the original image information of the received frame to be displayed. Therefore, each virtual pixel borrows sub pixel of the virtual pixels in adjacent rows to display lacking color, the display function the same as each original pixel is realized, and the image resolution of the frame to be displayed is increased; moreover, according to the rule that the variance degree between the determined virtual image information and the original image information is minimized, the display image information required by each sub pixel in each original pixel is determined; the image of the frame to be displayed can be better represented according to the determined display image information and the image resolution required for displaying.

Application Domain

Geometric image transformationCathode-ray tube indicators

Technology Topic

Image resolutionVirtual image +2

Image

  • Display method and display device for image
  • Display method and display device for image
  • Display method and display device for image

Examples

  • Experimental program(1)

Example Embodiment

[0046] The specific implementation of the image display method and display device provided by the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0047] An image display method provided by an embodiment of the present invention, such as figure 2 Shown, including:
[0048] S201: Receive original image information of a frame to be displayed;
[0049] S202. Divide each original pixel in the display panel into a plurality of virtual pixels according to the required display image resolution of the frame to be displayed; wherein, each virtual pixel includes a part of sub-pixels in each original pixel;
[0050] S203. According to the weight of each sub-pixel in each virtual pixel, the weight of each sub-pixel as compensation in the virtual pixels adjacent to the row, and the original image information of the frame to be displayed, determine that when displaying the image of the frame to be displayed Virtual image information of virtual pixels;
[0051] S204. According to the determined virtual image information and original image information of each virtual pixel, according to the rule of the smallest difference between the virtual image information of each virtual pixel and the original image information, determine the required amount of each sub-pixel in each original pixel. Display image information;
[0052] S205: Perform display according to the determined display image information required by each sub-pixel in each original pixel and the required display image resolution.
[0053] Since the distance between the two points is small enough relative to the viewing angle of the human eye, the human eye will regard the two points as one point. Therefore, the human eye can regard multiple adjacent sub-pixels belonging to different pixels as a bright spot. Based on this, the above-mentioned image display method provided by the embodiment of the present invention divides each original pixel into a plurality of virtual pixels according to the required image resolution of the frame to be displayed; according to the sub-pixels in each virtual pixel The weight, the weight of each sub-pixel in the virtual pixels adjacent to the row and the received original image information of the frame to be displayed determine the virtual image information of each virtual pixel when displaying the image of the frame to be displayed; in this way, each virtual pixel is borrowed Each sub-pixel in the adjacent virtual pixels displays the missing color, which can achieve the same display function as each original pixel, thereby improving the image resolution of the frame to be displayed; and, according to the determined virtual image information and the original The rule for the smallest degree of difference in image information is to determine the display image information required by each sub-pixel in each original pixel; according to the determined display image information and the required image resolution display, it can also better restore the frame to be displayed Image.
[0054] In specific implementation, each original pixel in the display panel may include three sub-pixels with different color resist colors, such as red (R) sub-pixel, green (G) sub-pixel and blue (B) sub-pixel, or the display panel Each original pixel can also include four sub-pixels with different color resistance colors, such as red (R) sub-pixel, green (G) sub-pixel, blue (B) sub-pixel, and white (W) sub-pixel. Make a limit.
[0055] In specific implementation, step S202 in the above-mentioned display method provided by the embodiment of the present invention divides each original pixel in the display panel into multiple virtual pixels according to the required image resolution of the frame to be displayed. Way to achieve: when the required display image resolution of the frame to be displayed is twice the original image resolution of the frame to be displayed, divide the six sub-pixels arranged in two rows in the display panel (that is, two original pixels) Four virtual pixels are used as a repeating group, and the composition of each virtual pixel in a repeating group is different from each other.
[0056] Specifically, such as image 3 As shown, each original pixel in the display panel includes three sub-pixels ABC with different color resist colors as an example for description. image 3 It shows 4 rows×6 columns of sub-pixels, that is, 8 original pixels. When the required display image resolution of the frame to be displayed is twice the original image resolution of the frame to be displayed, six sub-pixels arranged in two rows in the display panel (such as image 3 The dashed frame shown) means that the two original pixels are divided into four virtual pixels 1, 2, 3, and 4 as a repeating group. The composition of each virtual pixel in a repeating group is different from each other: virtual pixel 1 contains one Sub-pixel A and half of sub-pixel B, virtual pixel 2 contains one sub-pixel C and half sub-pixel B, virtual pixel 3 contains one sub-pixel B and half sub-pixel C, virtual pixel 4 contains one sub-pixel A and half sub-pixel C .
[0057] Of course, the required display image resolution of the frame to be displayed can also be three times the original image resolution of the frame to be displayed. In this case, six sub-pixels arranged in two rows in the display panel (ie, two original pixels) ) Is divided into six virtual pixels as a repeating group, that is, each sub-pixel is used as a virtual pixel, which is not limited here. In specific implementation, each original pixel in the display panel can be divided into multiple virtual pixels according to the required image resolution of the frame to be displayed.
[0058] It should be noted that the above-mentioned display method provided by the embodiment of the present invention is also applicable to other sub-pixel arrangements, and is not limited to image 3 The arrangement of the sub-pixels shown is not limited here.
[0059] In specific implementation, the step S203 in the above-mentioned display method provided by the embodiment of the present invention is based on the weight of each sub-pixel in each virtual pixel, the weight of each sub-pixel as compensation in the adjacent virtual pixels, and the frame to be displayed. To determine the virtual image information of each virtual pixel when displaying the image of the frame to be displayed, it can be implemented through the following steps:
[0060] First, according to the area occupied by each sub-pixel in each virtual pixel, the area occupied by each sub-pixel as compensation in the adjacent virtual pixels, and the distance between each sub-pixel as compensation and the virtual pixel to be compensated, each The weight of each sub-pixel in each virtual pixel and the weight of each sub-pixel as compensation in the virtual pixels adjacent to the row;
[0061] Specifically, such as image 3 As shown, the virtual pixel adjacent to the left side of virtual pixel 1 is defined as virtual pixel 5 to determine the weight of each sub-pixel in virtual pixel 1 and the adjacent virtual pixels 2 and virtual pixels 5 as compensation sub-pixels As an example, the area occupied by sub-pixel A in virtual pixel 1 is 1, and the area occupied by sub-pixel B in virtual pixel 1 is The area occupied by sub-pixel C in virtual pixel 2 and virtual pixel 5 are both 1, and the area occupied by sub-pixel B in virtual pixel 2 and virtual pixel 5 are both Since the distance between each sub-pixel as compensation and the virtual pixel to be compensated is closer, the weight of each sub-pixel as compensation is greater. Therefore, the weight of sub-pixel A and sub-pixel B in virtual pixel 1 are both 1. The weights of sub-pixel B in pixel 2 and sub-pixel C in virtual pixel 5 are both The weights of sub-pixel C in virtual pixel 2 and sub-pixel B in virtual pixel 5 are both 1-α; the product of the area and weight occupied by each sub-pixel is taken as the weight of each sub-pixel. Therefore, in virtual pixel 1 The weights of sub-pixel A and sub-pixel B are 1 and The weights of sub-pixel B and sub-pixel C in virtual pixel 2 are And 1-α, the weights of sub-pixel C and sub-pixel B in virtual pixel 5 are α and
[0062] Then, according to the determined weight of each sub-pixel in each virtual pixel, the weight of each sub-pixel as compensation in the virtual pixels adjacent to the row, and the original image information of the frame to be displayed, it is determined that the image of the frame to be displayed is displayed The virtual image information of each virtual pixel. Specifically, for example: Figure 4 As shown, the original image information of the frame to be displayed received corresponding to each virtual pixel in the row where the virtual pixel 1 is located is... (A 2n-3 ,B 2n-3 ,C 2n-3 ), (A 2n-2 ,B 2n-2 ,C 2n-2 ), (A 2n-1 ,B 2n-1 ,C 2n-1 ), (A 2n ,B 2n ,C 2n )……,Such as Figure 5 As shown, the display image information required by each sub-pixel in the row of virtual pixel 1 is...(a n-1 ,b n-1 ,c n-1 ), (a n ,b n ,c n )..., the a corresponding to the sub-pixel A in the virtual pixel 1 determined according to the above n The weight of 1 and the corresponding b of sub-pixel B n the weight of B corresponding to sub-pixel B in virtual pixel 2 adjacent to the row n the weight of C corresponding to sub-pixel C n The weight of 1-α, the c corresponding to the sub-pixel C in the virtual pixel 5 n-1 The weight of α and the corresponding b of sub-pixel B n-1 the weight of It can be determined that the virtual image information of virtual pixel 1 when displaying the image of the frame to be displayed is In the same way, it can be determined that the virtual image information of virtual pixel 2 is The virtual image information of virtual pixel 5 is
[0063] In specific implementation, the step S204 in the above-mentioned display method provided by the embodiment of the present invention is based on the determined virtual image information and original image information of each virtual pixel, according to the degree of difference between the virtual image information of each virtual pixel and the original image information. The minimum rule to determine the display image information required by each sub-pixel in each original pixel can be implemented through the following steps:
[0064] First, according to the determined virtual image information and original image information of each virtual pixel, determine the virtual image information of each virtual pixel and the mean square error of the original image information; specifically, the virtual pixel of each virtual pixel in the row of virtual pixel 1 The mean square error between the image information and the original image information of the frame to be displayed received can be obtained by calculating the difference between the virtual image information and the original image information, and the difference is obtained by taking the square sum and then averaging. Specifically, it can be obtained by the following formula (1 ) Calculation:
[0065] D = 1 3 X n = 1 N [ A 2 n - 2 - ( ( 1 - α ) a n - 1 + α a n ) ] 2 + [ B 2 n - 2 - ( 1 + α 2 b n - 1 + 1 - α 2 b n ) ] 2 + [ C 2 n - 2 - c n - 1 ] 2 + [ A 2 n - 1 - a n ] 2 + [ B 2 n - 1 - ( 1 - α 2 b n - 1 + 1 + α 2 b n ) ] 2 + [ C 2 n - 1 - ( α c n - 1 + ( 1 - α ) c n ) ] 2 + [ A 2 n - ( ( 1 - α ) a n + α a n + 1 ) ] 2 + [ B 2 n - ( 1 + α 2 b n + 1 - α 2 b n + 1 ) ] 2 + [ C 2 n - c n ] 2 Formula 1);
[0066] Where N is the number of original pixels in the row where the virtual pixel 1 is located;
[0067] Then, when the determined mean square difference between the virtual image information of each virtual pixel and the original image information is the smallest, the display image information required by each sub-pixel in each original pixel is determined. Since the mean square error of the virtual image information and the original image information of each virtual pixel reflects the difference between the virtual image information and the original image information, the smaller the mean square error, the smaller the difference between the virtual image information and the original image information , The higher the restoration degree of the image displayed by the virtual image information.
[0068] Specifically, when the virtual image information of each virtual pixel in the row of virtual pixel 1 and the original image information of the received frame to be displayed are the smallest, in order to simplify the calculation process, only sub-pixel A is considered, and the mean square error D is For component a n Finding the derivative and setting the derivative to zero, the following formula (2) can be obtained:
[0069] α(1-α)a n-1 +(2α 2 +3)a n +α(1-α)a n+1 =αA 2n-2 +A 2n-1 +(1-α)A 2n Formula (2);
[0070] That is, when the display image information required by sub-pixel A satisfies the above formula, the virtual image information of each virtual pixel in the row of virtual pixel 1 and the original image information has the smallest mean square error, and the virtual image of each virtual pixel in the row of virtual pixel 1 The difference between the information and the original image information is the smallest, and the restoration degree of the virtual image information of each virtual pixel in the row where the virtual pixel 1 is located is the highest.
[0071] Let α 1 =1-α; β 1 =αα 1; Γ 1 = 2α 2 +3, formula (2) can be converted into matrix form: Formula (3);
[0072] According to formula (3), it can be deduced that the display image information required by each sub-pixel A in the row of the virtual pixel 1 is:
[0073] Formula (4);
[0074] Among them, the transformation matrix P can be defined as:
[0075] Formula (5).
[0076] In order to simplify the data processing process and reduce the power consumption of the computing chip, you can make Thus, the conversion matrix P is obtained. In the transformation matrix P, you can find a repeating array centered on the maximum value of 0.6708204, and ignoring the values ​​close to zero in the repeating array, you can get as Image 6 The array distribution shown, the display image information required by sub-pixel A n It can be obtained by the repeated array as the weight, namely:
[0077] a n =0.000304A 2n-9 -0.001288A 2n-8 -0.002083A 2n-7 +0.008825A 2n-6 +0.014279A 2n-5 -0.060488A 2n-4 -0.097871A 2n-3 +0.4145898A 2n-2. +0.6708204A 2n-1 +0.1583592A 2n -0.097871A 2n+1 -0.023104A 2n+2 +0.014279A 2n+3 +0.0033709A 2n+4 -0.002083A 2n+5 -0.000492A 2n+6
[0078] Similarly, when the virtual image information of each virtual pixel in the row of virtual pixel 1 and the corresponding received original image information of the frame to be displayed have the smallest mean square error, only sub-pixel B or sub-pixel C can be considered, and the virtual pixel 1 The virtual image information of each virtual pixel in the row and the corresponding received original image information of the frame to be displayed. n Or component c n Find the derivative and set the derivative to zero to obtain the display image information required by each sub-pixel B or each sub-pixel C in the row where the virtual pixel 1 is located. The specific implementation is required to obtain the sub-pixel A in the row where the virtual pixel 1 is located. The embodiment of displaying image information is similar to that of, and will not be repeated here.
[0079] Similarly, the method for obtaining the display image information required by each sub-pixel A, each sub-pixel B, and each sub-pixel C in the row where the virtual pixel 3 and the virtual pixel 4 are located is the same as obtaining the sub-pixel A, each sub-pixel in the row where the virtual pixel 1 is located. The embodiments of displaying image information required by each sub-pixel B and each sub-pixel C are similar, and will not be repeated here.
[0080] And because of image 3 The virtual pixels 1, 2, 3, and 4 are a repeating group. Therefore, the display image information required by each sub-pixel in the other odd rows of the display panel and the display image information required by each sub-pixel in the row where the virtual pixel 1 is located The acquisition method is the same, and the display image information required by each sub-pixel in the other even rows of the display panel is the same as the display image information required by each sub-pixel in the row where the virtual pixel 3 is located, and will not be repeated here.
[0081] In specific implementation, after determining the display image information required by each sub-pixel in each original pixel in step S204 in the foregoing display method provided by the embodiment of the present invention, such as Figure 7 As shown, the following steps can also be included:
[0082] S206: Perform low-pass filtering on the determined display image information required by each sub-pixel in each original pixel by using a low-pass filter. For example: the following filters can be used: 1 9 2 9 3 9 2 9 1 9 Perform low-pass filtering on the determined display image information required by each sub-pixel in each original pixel in the row where the virtual pixel 1 is located, so that the display image required by each sub-pixel in each original pixel in the row where the virtual pixel 1 is located can be reduced. Color aliasing effect.
[0083] Of course, other similar filters can also be used at the same time to jointly improve the quality of the displayed image, which is not limited here.
[0084] Based on the same inventive concept, the embodiment of the present invention also provides an image display device. Since the principle of the device to solve the problem is similar to the foregoing image display method, the implementation of the device can refer to the implementation of the method. No longer.
[0085] The embodiment of the present invention also provides an image display device, such as Figure 8 As shown, it includes: a display panel 81 and a driving device 82; wherein, the driving device 82 includes:
[0086] The information receiving unit 821 is configured to receive the original image information of the frame to be displayed;
[0087] The pixel dividing unit 822 is configured to divide each original pixel in the display panel into a plurality of virtual pixels according to the required display image resolution of the frame to be displayed; wherein, each virtual pixel includes a part of each original pixel. Pixel
[0088] The first determining unit 823 is configured to determine the display to be displayed according to the weight of each sub-pixel in each virtual pixel, the weight of each sub-pixel as compensation in the virtual pixels adjacent to the row, and the original image information of the frame to be displayed The virtual image information of each virtual pixel in the image of the frame;
[0089] The second determining unit 824 is configured to determine the virtual image information of each virtual pixel and the original image information according to the rule of the smallest difference between the virtual image information of each virtual pixel and the original image information, and determine the Display image information required by each sub-pixel;
[0090] The image display unit 825 is configured to display according to the determined display image information required by each sub-pixel in each original pixel and the required display image resolution.
[0091] Since the distance between the two points is small enough relative to the viewing angle of the human eye, the human eye will regard the two points as one point. Therefore, the human eye can regard multiple adjacent sub-pixels belonging to different pixels as a bright spot. Based on this, in the above-mentioned image display device provided by the embodiment of the present invention, the pixel dividing unit divides each original pixel into a plurality of virtual pixels according to the required image resolution of the frame to be displayed; the first determining unit is based on each The weight of each sub-pixel in the virtual pixel, the weight of each sub-pixel in the virtual pixel adjacent to the row, and the received original image information of the frame to be displayed, determine the virtual image information of each virtual pixel when displaying the image of the frame to be displayed; In this way, each virtual pixel borrows the color that is lacking in the sub-pixels in the adjacent virtual pixels, which can achieve the same display function as each original pixel, thereby improving the image resolution of the frame to be displayed; and, the second The determining unit determines the display image information required by each sub-pixel in each original pixel according to the determined rule of the smallest difference between the virtual image information and the original image information; the image display unit determines the displayed image information and the required display according to the determined display image information The image resolution display can also better restore the image of the frame to be displayed.
[0092] In specific implementation, in the above-mentioned display device provided by the embodiment of the present invention, each original pixel in the display panel 81 is composed of a plurality of sub-pixels with different color resistance colors, and the colors of the sub-pixels adjacent to each other in rows and columns are different. The resistance colors are different. Such as image 3 As shown, each original pixel 6 is composed of three sub-pixels ABC with different color resistance colors, and these three sub-pixels can be red (R) sub-pixels, green (G) sub-pixels and blue (B) sub-pixels; or, Each original pixel 6 can also be composed of four or more sub-pixels with different color resist colors, which is not limited here.
[0093] In specific implementation, in the above-mentioned display device provided by the embodiment of the present invention, the pixel dividing unit 822 is specifically used for when the required display image resolution of the frame to be displayed is twice the original image resolution of the frame to be displayed , The six sub-pixels arranged in two rows in the display panel are divided into four virtual pixels as a repeating group, and the composition of each virtual pixel in a repeating group is different from each other. Such as image 3 As shown, when the required display image resolution of the frame to be displayed is twice the original image resolution of the frame to be displayed, six sub-pixels arranged in two rows in the display panel (such as image 3 The dashed frame shown), that is, the two original pixels 6 are divided into four virtual pixels 1, 2, 3, and 4 as a repeating group. The composition of each virtual pixel in a repeating group is different from each other: the virtual pixel 1 contains One sub-pixel A and half sub-pixel B, virtual pixel 2 contains one sub-pixel C and half sub-pixel B, virtual pixel 3 contains one sub-pixel B and half sub-pixel C, virtual pixel 4 contains one sub-pixel A and half sub-pixel C.
[0094] Of course, the required display image resolution of the frame to be displayed can also be three times the original image resolution of the frame to be displayed. In this case, six sub-pixels arranged in two rows in the display panel need to be divided into two original pixels. Six virtual pixels are used as a repeating group, that is, each sub-pixel is used as a virtual pixel, which is not limited here. In specific implementation, each original pixel in the display panel can be divided into multiple virtual pixels according to the required image resolution of the frame to be displayed.
[0095] It should be noted that the above-mentioned display device provided by the embodiment of the present invention is also applicable to other arrangements of sub-pixels, and is not limited to image 3 The arrangement of the sub-pixels shown is not limited here.
[0096] In specific implementation, in the above-mentioned display device provided by the embodiment of the present invention, the first determining unit 823 may specifically include: a first determining sub-unit 8231, which is used to determine the area and line of each sub-pixel in each virtual pixel. The area occupied by each sub-pixel for compensation in adjacent virtual pixels, and the distance from each sub-pixel used as compensation to the virtual pixel to be compensated, determine the weight of each sub-pixel in each virtual pixel and the virtual pixels adjacent to the row The second determining sub-unit 8232 is used to determine the weight of each sub-pixel in each virtual pixel, the weight of each sub-pixel to be compensated in the virtual pixels adjacent to the row, and the second determining sub-unit 8232. As well as the original image information of the frame to be displayed, the virtual image information of each virtual pixel when displaying the image of the frame to be displayed is determined.
[0097] In specific implementation, in the above-mentioned display device provided in the embodiment of the present invention, the second determining unit 824 may specifically include: a third determining subunit 8241 for determining the virtual image information of each virtual pixel and the original Image information, to determine the mean square error of the virtual image information of each virtual pixel and the original image information; the fourth determining subunit 8242 is used to determine the minimum mean square error of the virtual image information and the original image information of each virtual pixel , To determine the display image information required by each sub-pixel in each original pixel.
[0098] In specific implementation, in the above-mentioned display device provided by the embodiment of the present invention, the driving device 82 may further include: a low-pass filter unit 826, configured to use a low-pass filter to determine each sub-pixel in each original pixel The required display image information is low-pass filtered.
[0099] According to the image display method and display device provided by the embodiments of the present invention, each original pixel is divided into a plurality of virtual pixels according to the required display image resolution of the frame to be displayed; The weight of the pixel, the weight of each sub-pixel in the virtual pixels adjacent to the row, and the received original image information of the frame to be displayed determine the virtual image information of each virtual pixel when displaying the image of the frame to be displayed; in this way, each virtual pixel The sub-pixels in the virtual pixels adjacent to the pixel borrowing row display their own missing colors, which can achieve the same display function as each original pixel, thereby improving the image resolution of the frame to be displayed; and, as the virtual image determined according to the The minimum difference between the information and the original image information is to determine the display image information required by each sub-pixel in each original pixel; according to the determined display image information and the required display image resolution display, it can be better restored Display the image of the frame.
[0100] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

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