CN110796997A - Method and device for realizing non-uniform resolution display - Google Patents
Method and device for realizing non-uniform resolution display Download PDFInfo
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- CN110796997A CN110796997A CN201911113471.2A CN201911113471A CN110796997A CN 110796997 A CN110796997 A CN 110796997A CN 201911113471 A CN201911113471 A CN 201911113471A CN 110796997 A CN110796997 A CN 110796997A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/391—Resolution modifying circuits, e.g. variable screen formats
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/38—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory with means for controlling the display position
Abstract
A method and apparatus for implementing non-uniform resolution display is disclosed. The method for realizing the non-uniform resolution display comprises the following steps: uniformly zooming the film source image according to the expected resolution to generate a first image; dividing the first image into a plurality of sub-regions, and acquiring a scaling compensation coefficient of each sub-region; performing scaling compensation on all sub-regions of the first image by using the scaling compensation coefficient to generate a second image; displaying the second image on a display screen with non-uniform resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image. The technical scheme can realize non-uniform resolution display, thereby improving the definition of the local area of the image, improving the visual effect of the image and simultaneously considering the production cost of the display.
Description
Technical Field
The invention relates to the technical field of display, in particular to a method and a device for realizing non-uniform resolution display.
Background
At present, the requirement of users on image quality is higher and higher, and limited by the bandwidth of data transmission, a film source can be low-resolution image data, and then the image data is scaled in a driving circuit of display equipment and then is changed into a high-resolution image for output and display.
However, the increased resolution of the display leads to a significant increase in production costs.
Disclosure of Invention
The embodiment of the invention provides a method and a device for realizing non-uniform resolution display, which can realize the non-uniform resolution display, thereby improving the definition of a local area of an image, improving the visual effect of the image and simultaneously considering the production cost of a display.
According to a first aspect of the present application, an embodiment of the present invention provides a method for implementing non-uniform resolution display, including:
uniformly zooming the film source image according to the expected resolution to generate a first image;
dividing the first image into a plurality of sub-regions, and acquiring a scaling compensation coefficient of each sub-region;
performing scaling compensation on all sub-regions of the first image by using the scaling compensation coefficient to generate a second image;
displaying the second image on a display screen with non-uniform resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image;
according to a second aspect of the present application, an embodiment of the present invention provides an apparatus for implementing non-uniform resolution display, including:
the first image processing module is used for uniformly zooming the film source image according to the expected resolution ratio to generate a first image;
a scaling compensation coefficient acquisition module, configured to divide the first image into a plurality of sub-regions, and acquire a scaling compensation coefficient of each sub-region;
the scaling compensation module is used for carrying out scaling compensation on all sub-regions of the first image by utilizing the scaling compensation coefficient to generate a second image;
the display module is used for displaying the second image on a display screen with non-uniform resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image.
Compared with the related art, the method and the device for realizing non-uniform resolution display provided by the embodiment of the invention have the advantages that the film source image is uniformly zoomed according to the expected resolution to generate the first image, the first image is divided into a plurality of sub-areas, and the zoom compensation coefficient of each sub-area is obtained; performing scaling compensation on all sub-areas of the first image by using the scaling compensation coefficient to generate a second image, and displaying the second image on a display screen with uneven resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image. The technical scheme of the embodiment of the invention can realize non-uniform resolution display, thereby improving the definition of the local area of the image, improving the visual effect of the image and simultaneously considering the production cost of the display.
Drawings
Fig. 1 is a flowchart of a method for implementing non-uniform resolution display according to embodiment 1 of the present invention;
FIG. 2 is a diagram of a grid cell of a reference image according to embodiment 1 of the present invention;
FIG. 3 is a diagram of grid cells of a third image according to embodiment 1 of the present invention;
FIG. 4 is a diagram of grid cells of a second image according to embodiment 1 of the present invention;
fig. 5 is a schematic view of a second image displayed on a display screen with non-uniform resolution according to embodiment 1 of the present invention;
FIG. 6-a is a schematic view of a first image according to embodiment 1 of the present invention;
FIG. 6-b is a schematic diagram of a first image shown in FIG. 6-a directly displayed on a display screen with non-uniform resolution without scaling compensation in embodiment 1 of the present invention;
FIG. 6-c is a schematic diagram of a first image shown in FIG. 6-a after being subjected to zoom compensation and displayed on a display screen with non-uniform resolution in embodiment 1 of the present invention;
fig. 7 is a schematic diagram of an apparatus for implementing non-uniform resolution display according to embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The technical scheme of the embodiment of the invention aims at the local non-uniform resolution display, and the display can allocate more pixels in a watching area (such as a middle attention area) of a user watching screen and allocate less pixels in other areas (such as an edge area) so as to achieve the purpose of reducing the cost of the display. In order to enable the common film source to be displayed normally on such a display, the resolution of the source end and the resolution of the screen need to be matched, and the ratio of the displayed image is ensured to be unchanged by performing image processing on the source end signal in a subarea manner.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a method for implementing non-uniform resolution display, including:
step S110, uniformly zooming the film source image according to the expected resolution to generate a first image;
step S120, dividing the first image into a plurality of sub-regions, and acquiring a scaling compensation coefficient of each sub-region;
step S130, carrying out zoom compensation on all sub-regions of the first image by using the zoom compensation coefficient to generate a second image;
step S140, displaying the second image on a display screen with uneven resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image.
In the above embodiment, the second image is generated by performing scaling compensation on the first image after the film source image is scaled uniformly according to the granularity of the sub-region, so that the display proportion of any one sub-region in the picture displayed by the second image on the display screen with non-uniform resolution to the whole picture is the same as the proportion of the sub-region of the corresponding content on the first image to the first image, thereby ensuring that the display scale of each part of content is not changed when any film source is displayed on the display screen with uneven resolution, the film source can be normally displayed, the definition of the sub-area with high local resolution on the display screen is improved compared with the display screen with uniform resolution, the resolution of the display screen only needs to be locally improved, and does not need to be integrally improved, therefore, the pixel unit of the whole display screen is saved, the display quality of the display screen is improved, and meanwhile, the production cost of the display screen is considered.
In step S110, the film source image is uniformly scaled according to a desired resolution, for example, if the original resolution of the film source image is a × B and the desired resolution is C × D, the film source image is uniformly scaled to generate a first image with the resolution of C × D.
The display screen with non-uniform resolution refers to the display screen having pixel units which are non-uniformly distributed in a display area;
in one embodiment, the resolution distribution of the display screen with non-uniform resolution in the width direction may have the following characteristics: the resolution of the middle area is higher than that of the two side areas; that is, the pixel pitch of the middle region of the display screen is smaller than the pixel pitch of the two side regions. In other embodiments, the arrangement of the pixel units of the display screen may be designed in any distribution manner according to the application requirement, and the pixel arrangement manner is not limited in this application.
In step S120, in an exemplary embodiment, dividing the first image into a plurality of sub-regions, and obtaining a scaling compensation coefficient for each sub-region includes:
dividing the first image into a plurality of sub-regions according to a preset sub-region dividing mode;
acquiring a scaling compensation coefficient of each sub-area of the first image from a scaling compensation coefficient database according to the expected resolution;
the zoom compensation coefficient database stores zoom compensation coefficients of all sub-areas of the image under a preset resolution;
and dividing the first image into a plurality of sub-regions according to a preset sub-region dividing mode, wherein the preset sub-region dividing mode refers to an image sub-region dividing mode adopted when a scaling compensation coefficient database is established.
In an exemplary embodiment, before dividing the first image into a plurality of sub-regions, the method further comprises:
establishing a scaling compensation coefficient database:
acquiring a pixel arrangement array diagram of a display screen with uneven resolution at a preset resolution;
dividing a reference image with a preset resolution into a plurality of sub-areas;
simulating a picture displayed by the reference image on a display screen with uneven resolution, and taking the picture as a third image;
for any sub-region on the reference image, taking the ratio of the width of the sub-region on the reference image to the width of the sub-region on the third image as a horizontal scaling compensation coefficient of the sub-region; taking the ratio of the height of the subregion on the reference image to the height of the subregion on the third image as a vertical scaling compensation coefficient of the subregion;
that is, for the ith sub-region, the following formula (1) is used to calculate the horizontal scaling compensation coefficient a of the sub-regioniCalculating a vertical scaling compensation coefficient b of the sub-region using the following formula (2)i，
ai＝xi/x'i； (1)
bi＝yi/y'i； (2)
Wherein x isiIs the width, x 'of the ith sub-region on the reference picture'iIs the width of the ith sub-region on the third image; y isiIs the height, y 'of the ith sub-region on the reference picture'iIs that the ith sub-region is high on the third image.
Fig. 2 shows a reference image, which is uniformly divided into 8 × 8 grid cells according to a preset subregion dividing manner.
Wherein, fig. 3 shows a third image, assuming that the resolution of the display screen is not uniform in the width direction (the resolution of the middle area is high, and the resolutions of the two side areas are low), after the grid cells of the reference image of fig. 2 are displayed on the display screen, the width of the grid cells of the middle area is narrowed, and the width of the grid cells of the two side areas is widened. In other embodiments, if the resolution of the display screen in the height direction is not uniform, the height of each grid cell of the reference image may also vary accordingly.
In the above embodiment, the scaling compensation coefficient of each sub-region can be obtained in a computational manner by simulating the display screen (third image) when the reference image is displayed on the display screen with uneven resolution and then comparing the third image and the reference image according to the granularity of the sub-region.
In an exemplary embodiment, the dividing the reference image with the preset resolution into a plurality of sub-regions includes:
uniformly dividing a reference image with a preset resolution into M x N grid units; m and N are natural numbers;
in an exemplary embodiment, the dividing the reference image with the preset resolution into a plurality of sub-regions includes:
determining the distance between any two adjacent pixels in the horizontal direction and the vertical direction according to a pixel arrangement array diagram of a display screen with non-uniform resolution at a preset resolution;
dividing a plurality of pixel regions according to a horizontal pitch and a vertical pitch between adjacent pixels; each pixel region corresponds to a resolution;
dividing a reference image with a preset resolution into a plurality of sub-regions according to the dividing mode of a pixel region;
in step S130, in an exemplary embodiment, performing scaling compensation on all sub-regions of the first image by using the scaling compensation coefficient to generate a second image includes:
for any sub-area of the first image, multiplying the width direction of the sub-area by the horizontal scaling compensation coefficient of the sub-area to perform scaling processing, and multiplying the height direction of the sub-area by the vertical scaling compensation coefficient of the sub-area to perform scaling processing;
generating a second image after all the subareas of the first image are zoomed;
wherein, fig. 4 shows a second image, assuming that the resolution of the display screen is not uniform in the width direction (the resolution of the middle area is high, the resolutions of the two side areas are low), the way of dividing the sub-areas of the first image is the same as the way of dividing the sub-areas of the reference image shown in fig. 2 (8 × 8 grids), in order to keep the display ratio of each part of the first image on the display screen unchanged, the first image is scaled by using the horizontal scaling compensation coefficient to generate the second image, the width of the grid cell of the two side areas of the second image is narrower than the width of the corresponding grid cell in the first image, and the width of the grid cell of the middle area of the second image is wider than the width of the corresponding grid cell in the first image.
In step S140, in an exemplary embodiment, displaying the second image on a display screen with non-uniform resolution includes:
and carrying out filtering and smoothing processing on the second image, and displaying the filtered and smoothed second image on a display screen with non-uniform resolution.
As shown in fig. 5, for a display screen with non-uniform resolution in the width direction (the resolution of the middle area is high, and the resolutions of the two side areas are low), a picture displayed on the display screen by the second image is a picture finally displayed after the film source image is compensated and stretched, the widths of all grid units are the same as the widths of the grid units in the first image, that is, the actual display effect of the film source image is that the display scale of each part of the original image is kept unchanged, and the definition of each part is different. Therefore, after the method in embodiment 1 of the present invention is adopted, when any film source is displayed on a display screen with non-uniform resolution, the display scale of each part of the content is not changed, and the display can be performed normally, and the definitions of different display positions are different.
Take the display of an actual picture on a display screen with non-uniform resolution (high resolution in the middle area and low resolution in the two side areas) as an example. Fig. 6-a is an example of a first image, with portions of the picture being of uniform sharpness. Fig. 6-b shows a picture (i.e., a third image) in which the first image is directly displayed on the display screen without compensation, the sharpness of each portion of the picture is different, the sharpness of the middle region is high, the sharpness of the two side regions is low, the proportion of each portion in the picture is changed, the middle region is narrowed, and the two side regions are widened. Fig. 6-c is an example of a picture displayed on the display screen after the first image is compensated, the display scale of each portion of the first image is kept unchanged, the definition of each portion is different, and the middle definition is higher than the two-side definition.
Example 2
As shown in fig. 7, an embodiment of the present invention provides an apparatus for implementing non-uniform resolution display, including:
the first image processing module 10 is configured to perform uniform scaling on the film source image according to a desired resolution to generate a first image;
a scaling compensation coefficient obtaining module 20, configured to divide the first image into a plurality of sub-regions, and obtain a scaling compensation coefficient of each sub-region;
a scaling compensation module 30, configured to perform scaling compensation on all sub-regions of the first image by using the scaling compensation coefficient to generate a second image;
a display module 40, configured to display the second image on a display screen with non-uniform resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image.
In an exemplary embodiment, the scaling compensation factor obtaining module is configured to divide the first image into a plurality of sub-regions, and obtain the scaling compensation factor of each sub-region by:
dividing the first image into a plurality of sub-regions according to a preset sub-region dividing mode;
acquiring a scaling compensation coefficient of each sub-area of the first image from a scaling compensation coefficient database according to the expected resolution;
and the zooming compensation coefficients of all the sub-areas of the image under the preset resolution are stored in the zooming compensation coefficient database.
In an exemplary embodiment, the apparatus further comprises: a scaling compensation factor establishing module 50;
the scaling compensation coefficient establishing module is used for establishing a scaling compensation coefficient database: acquiring a pixel arrangement array diagram of a display screen with uneven resolution at a preset resolution; dividing a reference image with a preset resolution into a plurality of sub-areas; simulating a picture displayed by the reference image on a display screen with uneven resolution, and taking the picture as a third image; for any sub-region on the reference image, taking the ratio of the width of the sub-region on the reference image to the width of the sub-region on the third image as a horizontal scaling compensation coefficient of the sub-region; and taking the ratio of the height of the subregion on the reference image to the height of the subregion on the third image as the vertical scaling compensation coefficient of the subregion.
In an exemplary embodiment, the scaling compensation factor establishing module is configured to divide a reference image with a preset resolution into a plurality of sub-regions in the following manner: uniformly dividing a reference image with a preset resolution into M x N grid units; m and N are natural numbers.
In an exemplary embodiment, the scaling compensation factor establishing module is configured to divide a reference image with a preset resolution into a plurality of sub-regions in the following manner: determining the distance between any two adjacent pixels in the horizontal direction and the vertical direction according to a pixel arrangement array diagram of a display screen with non-uniform resolution at a preset resolution; dividing a plurality of pixel regions according to a horizontal pitch and a vertical pitch between adjacent pixels; each pixel region corresponds to a resolution; dividing the reference image with the preset resolution into a plurality of sub-areas according to the dividing mode of the pixel area.
In an exemplary embodiment, the scaling compensation module is configured to generate the second image by scaling-compensating all sub-regions of the first image by using the scaling compensation coefficient in the following manner: for any sub-area of the first image, multiplying the width direction of the sub-area by the horizontal scaling compensation coefficient of the sub-area to perform scaling processing, and multiplying the height direction of the sub-area by the vertical scaling compensation coefficient of the sub-area to perform scaling processing; and generating a second image after all the sub-regions of the first image are zoomed.
In an exemplary embodiment, the display module is configured to display the second image on a non-uniform resolution display screen by: and carrying out filtering and smoothing processing on the second image, and displaying the filtered and smoothed second image on a display screen with non-uniform resolution.
In an exemplary embodiment, the non-uniform resolution display screen has the following features in the width direction: the resolution of the middle area is higher than the resolution of the two side areas.
It should be noted that the present invention can be embodied in other specific forms, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A method of implementing a non-uniform resolution display, comprising:
uniformly zooming the film source image according to the expected resolution to generate a first image;
dividing the first image into a plurality of sub-regions, and acquiring a scaling compensation coefficient of each sub-region;
performing scaling compensation on all sub-regions of the first image by using the scaling compensation coefficient to generate a second image;
displaying the second image on a display screen with non-uniform resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image.
2. The method of claim 1, wherein:
the dividing the first image into a plurality of sub-regions and obtaining a scaling compensation coefficient of each sub-region includes:
dividing the first image into a plurality of sub-regions according to a preset sub-region dividing mode;
acquiring a scaling compensation coefficient of each sub-area of the first image from a scaling compensation coefficient database according to the expected resolution;
and the zooming compensation coefficients of all the sub-areas of the image under the preset resolution are stored in the zooming compensation coefficient database.
3. The method of claim 1, wherein:
prior to dividing the first image into a plurality of sub-regions, the method further comprises:
establishing a scaling compensation coefficient database:
acquiring a pixel arrangement array diagram of a display screen with uneven resolution at a preset resolution;
dividing a reference image with a preset resolution into a plurality of sub-areas;
simulating a picture displayed by the reference image on a display screen with uneven resolution, and taking the picture as a third image;
for any sub-region on the reference image, taking the ratio of the width of the sub-region on the reference image to the width of the sub-region on the third image as a horizontal scaling compensation coefficient of the sub-region; and taking the ratio of the height of the subregion on the reference image to the height of the subregion on the third image as the vertical scaling compensation coefficient of the subregion.
4. The method of claim 3, wherein:
the dividing of the reference image with the preset resolution into a plurality of sub-regions includes:
uniformly dividing a reference image with a preset resolution into M x N grid units; m and N are natural numbers.
5. The method of claim 3, wherein:
the dividing of the reference image with the preset resolution into a plurality of sub-regions includes:
determining the distance between any two adjacent pixels in the horizontal direction and the vertical direction according to a pixel arrangement array diagram of a display screen with non-uniform resolution at a preset resolution;
dividing a plurality of pixel regions according to a horizontal pitch and a vertical pitch between adjacent pixels; each pixel region corresponds to a resolution;
dividing the reference image with the preset resolution into a plurality of sub-areas according to the dividing mode of the pixel area.
6. The method of claim 3, wherein:
performing scaling compensation on all sub-regions of the first image by using the scaling compensation coefficient to generate a second image, wherein the scaling compensation coefficient comprises:
for any sub-area of the first image, multiplying the width direction of the sub-area by the horizontal scaling compensation coefficient of the sub-area to perform scaling processing, and multiplying the height direction of the sub-area by the vertical scaling compensation coefficient of the sub-area to perform scaling processing;
and generating a second image after all the sub-regions of the first image are zoomed.
7. The method of claim 1, wherein:
the displaying the second image on the display screen with uneven resolution comprises:
and carrying out filtering and smoothing processing on the second image, and displaying the filtered and smoothed second image on a display screen with non-uniform resolution.
8. The method of claim 1, wherein:
the resolution of the display screen with uneven resolution in the width direction has the following characteristics: the resolution of the middle area is higher than the resolution of the two side areas.
9. An apparatus for implementing a non-uniform resolution display, comprising:
the first image processing module is used for uniformly zooming the film source image according to the expected resolution ratio to generate a first image;
a scaling compensation coefficient acquisition module, configured to divide the first image into a plurality of sub-regions, and acquire a scaling compensation coefficient of each sub-region;
the scaling compensation module is used for carrying out scaling compensation on all sub-regions of the first image by utilizing the scaling compensation coefficient to generate a second image;
the display module is used for displaying the second image on a display screen with non-uniform resolution; the display proportion of any one subregion in the picture displayed on the display screen with non-uniform resolution of the second image in the whole picture is the same as the proportion of the subregion of the corresponding content in the first image.
10. The apparatus of claim 9, wherein the apparatus further comprises: a scaling compensation coefficient establishing module;
the scaling compensation coefficient establishing module is used for establishing a scaling compensation coefficient database: acquiring a pixel arrangement array diagram of a display screen with uneven resolution at a preset resolution; dividing a reference image with a preset resolution into a plurality of sub-areas; simulating a picture displayed by the reference image on a display screen with uneven resolution, and taking the picture as a third image; for any sub-region on the reference image, taking the ratio of the width of the sub-region on the reference image to the width of the sub-region on the third image as a horizontal scaling compensation coefficient of the sub-region; and taking the ratio of the height of the subregion on the reference image to the height of the subregion on the third image as the vertical scaling compensation coefficient of the subregion.
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| CN113050999B (en) * | 2021-03-31 | 2024-04-23 | 京东方科技集团股份有限公司 | Image processing method and device, display control method and device, and display device |
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