CN114360443A - Sub-pixel rendering method and device and computer equipment - Google Patents
Sub-pixel rendering method and device and computer equipment Download PDFInfo
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- CN114360443A CN114360443A CN202111443188.3A CN202111443188A CN114360443A CN 114360443 A CN114360443 A CN 114360443A CN 202111443188 A CN202111443188 A CN 202111443188A CN 114360443 A CN114360443 A CN 114360443A
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- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The application relates to a sub-pixel rendering method, a sub-pixel rendering device, a computer device and a storage medium. The method comprises the following steps: dividing an input image into at least two images to be output, wherein the at least two images to be output correspond to each pixel unit of a repeating unit of display equipment one by one; the display device comprises a plurality of repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel; controlling display equipment to sequentially display each image to be output; when each image to be output is displayed, each sub-pixel in the pixel unit corresponding to the displayed image to be output displays the image, and each sub-pixel outside the pixel unit corresponding to the displayed image to be output does not display the image. The method can realize sub-pixel rendering.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a method and an apparatus for subpixel rendering, and a computer device.
Background
Currently, a Sub-Pixel Rendering (SPR) technology is introduced into a Light Emitting Diode (LED) display screen. The core of the SPR technology is that the sub-pixels are multiplexed in a time-sharing way through rearrangement of the physical structure of the lamp beads, and each image generated by sharing the sub-pixels in a short time can be superimposed to form the visual effect of one image by utilizing the persistence characteristic of human eyes, so that the resolution is improved by using a small number of lamp beads.
However, there is no specific implementation.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method, an apparatus and a computer device for rendering sub-pixels, which can achieve sub-pixel rendering.
In a first aspect, the present application provides a method for subpixel rendering. The method comprises the following steps:
dividing an input image into at least two images to be output, wherein the at least two images to be output correspond to each pixel unit of a repeating unit of display equipment one to one; the display device comprises a plurality of the repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel;
controlling the display equipment to sequentially display each image to be output; and when each image to be output is displayed, displaying the image by each sub-pixel in the pixel unit corresponding to the displayed image to be output, and not displaying the image by each sub-pixel outside the pixel unit corresponding to the displayed image to be output.
In one embodiment, the display frequency of the image to be output is equal to the display frequency of the input image multiplied by the number of pixel units in the repeating unit.
In one embodiment, the human eye perception positions of the pixel units of the display device are uniformly distributed.
In one embodiment, the repeating unit comprises a first column of sub-pixels, a second column of sub-pixels and a third column of sub-pixels which are arranged at intervals in a first direction, wherein the first direction is a row direction or a column direction of the array; the second column of sub-pixels comprises one blue sub-pixel and at least one red sub-pixel which are arranged at intervals in a second direction, and the second direction is perpendicular to the first direction; the first column of sub-pixels and the third column of sub-pixels both comprise green sub-pixels which are in one-to-one correspondence with at least one red sub-pixel of the same repeating unit, and the green sub-pixels, the corresponding red sub-pixels and the blue sub-pixels of the same repeating unit form a pixel unit.
In one embodiment, the second column of sub-pixels each includes a blue sub-pixel and a red sub-pixel, and the first column of sub-pixels and the third column of sub-pixels each includes a green sub-pixel; in the same repeating unit, a central connecting line of the blue sub-pixel and the red sub-pixel coincides with a symmetry axis of a green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
In one embodiment, the dividing the input image into at least two images to be output includes:
taking the pixel values of the odd lines in the input image as the pixel values of the odd lines in the image to be output, and taking 0 as the pixel values of the even lines in the image to be output to obtain a first image to be output;
taking the pixel values of the even lines in the input image as the pixel values of the even lines in the image to be output, and taking 0 as the pixel values of the odd lines in the image to be output to obtain a second image to be output;
alternatively, the first and second electrodes may be,
taking the pixel value of the odd column in the input image as the pixel value of the odd column in the image to be output, and taking 0 as the pixel value of the even column in the image to be output to obtain a first image to be output;
and taking the pixel value of the even column in the input image as the pixel value of the even column in the image to be output, and taking 0 as the pixel value of the odd column in the image to be output to obtain a second image to be output.
In one embodiment, the second column of sub-pixels includes one blue sub-pixel and two red sub-pixels alternately arranged in the second direction, and the first column of sub-pixels and the third column of sub-pixels each include two green sub-pixels arranged at intervals in the second direction; in the same repeating unit, a central connecting line of each of the red sub-pixels and the blue sub-pixels coincides with a symmetry axis of a corresponding green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
In one embodiment, the dividing the input image into at least two images to be output includes:
taking the pixel value of the odd-numbered row and the odd-numbered column in the input image as the pixel value of the odd-numbered row and the odd-numbered column in the image to be output, and taking 0 as the pixel value of the even-numbered row and the even-numbered row in the image to be output to obtain a first image to be output;
taking the pixel values of the odd-numbered rows and the even-numbered columns in the input image as the pixel values of the odd-numbered rows and the even-numbered columns in the image to be output, and taking 0 as the pixel values of the odd-numbered rows and the even-numbered rows in the image to be output to obtain a second image to be output;
taking the pixel values of the odd-numbered columns of the even-numbered rows in the input image as the pixel values of the odd-numbered columns of the even-numbered rows in the image to be output, and taking 0 as the pixel values of the odd-numbered rows and the even-numbered columns in the image to be output to obtain a third image to be output;
and taking the pixel values of the even rows and the even columns in the input image as the pixel values of the even rows and the even columns in the image to be output, and taking 0 as the pixel values of the odd rows and the even rows and the odd columns in the image to be output to obtain a fourth image to be output.
In a second aspect, the present application further provides a subpixel rendering apparatus. The device comprises:
the image dividing module is used for dividing an input image into at least two images to be output, wherein the at least two images to be output correspond to each pixel unit of a repeating unit of the display equipment one by one; the display device comprises a plurality of the repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel;
the display control module is used for controlling the display equipment to sequentially display each image to be output; and when each image to be output is displayed, displaying the image by each sub-pixel in the pixel unit corresponding to the displayed image to be output, and not displaying the image by each sub-pixel outside the pixel unit corresponding to the displayed image to be output.
In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor implementing the following steps when executing the computer program:
dividing an input image into at least two images to be output, wherein the at least two images to be output correspond to each pixel unit of a repeating unit of display equipment one to one; the display device comprises a plurality of the repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel;
controlling the display equipment to sequentially display each image to be output; and when each image to be output is displayed, displaying the image by each sub-pixel in the pixel unit corresponding to the displayed image to be output, and not displaying the image by each sub-pixel outside the pixel unit corresponding to the displayed image to be output.
The method, the device and the computer equipment for rendering the sub-pixels divide an input image into at least two images to be output, the at least two images to be output correspond to each pixel unit of a repeating unit of display equipment one by one, the display equipment comprises a plurality of repeating units distributed in an array, the repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, the pixel unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, then the display equipment is controlled to display the images to be output in sequence, when each image to be output is displayed, each sub-pixel in the pixel unit corresponding to the displayed image to be output displays the image, each sub-pixel outside the pixel unit corresponding to the displayed image to be output does not display the image, thereby realizing time-sharing multiplexing of partial sub-pixels. And at least two images to be output, which are divided from the input image, correspond to each pixel unit of the repeating unit of the display device one by one, so that when each image to be output is displayed, only each sub-pixel in the pixel unit corresponding to the image needs to be controlled to display the image, each sub-pixel outside the pixel unit corresponding to the image does not display the image, the sub-pixel for displaying the image and the sub-pixel for not displaying the image do not need to be selected, the control of the sub-pixels is simplified, and the complicated display driving control is avoided.
Drawings
FIG. 1 is a flow diagram illustrating a method for subpixel rendering in one embodiment;
FIG. 2 is a layout diagram of pixels of a display device in one embodiment;
FIG. 3 is a layout of pixels of a display device in another embodiment;
FIG. 4 is a block diagram of an embodiment of a subpixel rendering apparatus;
FIG. 5 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1, a sub-pixel rendering method is provided, and this embodiment is exemplified by applying the method to a display device, and it is understood that the method may also be applied to a terminal, and may also be applied to a system including the terminal and the display device, and is implemented by interaction between the terminal and the display device. In this embodiment, the method includes the steps of:
step S202, dividing the input image into at least two images to be output.
At least two images to be output correspond to each pixel unit of the repeating unit of the display device one by one. The display device comprises a plurality of repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel.
Specifically, the corresponding relationship between the pixels in the input image and the pixel units in the display device is obtained, and each pixel is allocated to the corresponding pixel unit according to the corresponding relationship, and then the pixels corresponding to each pixel unit multiplexing the same sub-pixel are combined into different images to be output.
And step S204, controlling the display equipment to sequentially display each image to be output.
When each image to be output is displayed, each sub-pixel in the pixel unit corresponding to the displayed image to be output displays the image, and each sub-pixel outside the pixel unit corresponding to the displayed image to be output does not display the image.
Specifically, according to the distribution position of the pixel units in the display device, corresponding pixels are displayed in the order from top to bottom and from left to right, and an image to be output is presented.
In the subpixel rendering method, an input image is divided into at least two images to be output, the at least two images to be output correspond to each pixel unit of a repeating unit of a display device one by one, the display device comprises a plurality of repeating units distributed in an array, each repeating unit comprises a blue subpixel, a red subpixel and a green subpixel, at least one of the blue subpixel, the red subpixel and the green subpixel is multiplexed to form at least two pixel units, each pixel unit comprises a blue subpixel, a red subpixel and a green subpixel, then the display device is controlled to display the images to be output in sequence, when each image to be output is displayed, and each sub-pixel in the pixel unit corresponding to the displayed image to be output displays the image, and each sub-pixel outside the pixel unit corresponding to the displayed image to be output does not display the image, so that the time-sharing multiplexing of partial sub-pixels is realized. And at least two images to be output, which are divided from the input image, correspond to each pixel unit of the repeating unit of the display device one by one, so that when each image to be output is displayed, only each sub-pixel in the pixel unit corresponding to the image needs to be controlled to display the image, each sub-pixel outside the pixel unit corresponding to the image does not display the image, the sub-pixel for displaying the image and the sub-pixel for not displaying the image do not need to be selected, the control of the sub-pixels is simplified, and the complicated display driving control is avoided.
In one embodiment, the display frequency of the image to be output is equal to the display frequency of the input image multiplied by the number of pixel cells in the repeating unit.
For example, the display frequency of the input image is 60fps, and the number of pixel units in the repeating unit is two, the display frequency of the image to be output is 120 fps.
In one embodiment, as shown in fig. 2 and 3, the human eye sensing positions of the respective pixel units of the display device are uniformly distributed (the human eye sensing positions of the pixel units are indicated by black dots in fig. 2 and 3).
In one embodiment, as shown in fig. 2 and 3, the repeating unit includes a first column of sub-pixels, a second column of sub-pixels, and a third column of sub-pixels arranged at intervals in a first direction, which is a row direction or a column direction of the array. The second column of sub-pixels comprises one blue sub-pixel and at least one red sub-pixel which are arranged at intervals in a second direction, and the second direction is perpendicular to the first direction. The first column of sub-pixels and the third column of sub-pixels each include a green sub-pixel in one-to-one correspondence with at least one red sub-pixel of the same repeating unit, and the green sub-pixel, the corresponding red sub-pixel, and the blue sub-pixel of the same repeating unit form a pixel unit (in fig. 2 and 3, a circle with a G represents the green sub-pixel, a circle with a R represents the red sub-pixel, and a circle with a B represents the blue sub-pixel).
The human eyes sense the green light most sensitively, the centers of the human eye sensing positions of the pixel units are closest to the green sub-pixels, and the human eye sensing positions of the pixel units of the display device can be uniformly distributed by the green sub-pixels being located at the two sides of the whole body of the blue sub-pixels and the red sub-pixels, so that the imaging of the display device is uniform, and the images with the conditions of 'color edge', uneven color, fuzzy texture and the like are prevented from being presented.
In one implementation, as shown in FIG. 2, the second column of subpixels each include a blue subpixel and a red subpixel, and the first and third columns of subpixels each include a green subpixel. In the same repeating unit, the central connecting line of the blue sub-pixel and the red sub-pixel is coincident with the symmetry axis of the green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
By forming the 2G1R 1B-RB-common pixel structure in the above manner, each pixel structure can form two pixel units. The mode can also rotate 90 degrees to the vertical direction, but only can support the expansion of the visual resolution in a single direction, and is characterized by simple pixel structure.
Specifically, I3+2 × I1 ═ 2 × I4+4 × I2. Wherein I1 is the shortest distance of two sub-pixels in the same repeating unit in the first direction, I2 is the shortest distance of two sub-pixels in the same repeating unit in the second direction, I3 is the shortest distance of two sub-pixels in different repeating units in the first direction, and I4 is the shortest distance of two sub-pixels in different repeating units in the second direction.
With the above definition, human eye perception positions of the respective pixel units of the display device are uniformly distributed.
Exemplarily, the step S202 includes: taking the pixel values of the odd lines in the input image as the pixel values of the odd lines in the image to be output, and taking 0 as the pixel values of the even lines in the image to be output to obtain a first image to be output; and taking the pixel values of the even lines in the input image as the pixel values of the even lines in the image to be output, and taking 0 as the pixel values of the odd lines in the image to be output to obtain a second image to be output.
Exemplarily, the step S202 includes: taking the pixel value of the odd column in the input image as the pixel value of the odd column in the image to be output, and taking 0 as the pixel value of the even column in the image to be output to obtain a first image to be output; and taking the pixel value of the even column in the input image as the pixel value of the even column in the image to be output, and taking 0 as the pixel value of the odd column in the image to be output to obtain a second image to be output.
In the two implementation modes, the other pixel units are controlled not to display by complementing 0, so that the display device only displays the image to be output, and the sub-pixels multiplexed among the pixel units can realize time-sharing multiplexing.
In another implementation, as shown in fig. 3, the second column of sub-pixels includes one blue sub-pixel and two red sub-pixels alternately arranged in the second direction, and the first column of sub-pixels and the third column of sub-pixels each include two green sub-pixels arranged at intervals in the second direction; in the same repeating unit, the central connecting line of each red sub-pixel and each blue sub-pixel coincides with the symmetry axis of the corresponding green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
By forming the 4G2R1B pixel structure in the above manner, each pixel structure can form four pixel units, and the visual resolution can be expanded in both the horizontal (X) and vertical (Y) directions.
Specifically, (I3+2 × I1)/I1 ═ (I4+4 × I2)/(2 × I2). Wherein I1 is the shortest distance of two sub-pixels in the same repeating unit in the first direction, I2 is the shortest distance of two sub-pixels in the same repeating unit in the second direction, I3 is the shortest distance of two sub-pixels in different repeating units in the first direction, and I4 is the shortest distance of two sub-pixels in different repeating units in the second direction.
With the above definition, human eye perception positions of the respective pixel units of the display device are uniformly distributed.
Exemplarily, the step S202 includes: taking the pixel value of the odd-numbered row and the odd-numbered column in the input image as the pixel value of the odd-numbered row and the odd-numbered column in the image to be output, and taking 0 as the pixel value of the even-numbered row and the even-numbered row in the image to be output to obtain a first image to be output; taking the pixel values of the odd-numbered rows and the even-numbered columns in the input image as the pixel values of the odd-numbered rows and the even-numbered columns in the image to be output, and taking 0 as the pixel values of the odd-numbered rows and the even-numbered rows in the image to be output to obtain a second image to be output; taking the pixel values of odd columns and even rows in the input image as the pixel values of odd columns and even rows in the image to be output, and taking 0 as the pixel values of odd columns and even rows in the image to be output to obtain a third image to be output; and taking the pixel values of the even rows and the even columns in the input image as the pixel values of the even rows and the even columns in the image to be output, and taking 0 as the pixel values of the odd rows and the even rows and the odd columns in the image to be output to obtain a fourth image to be output.
And controlling other pixel units not to display by complementing 0, so that the display device only displays the image to be output, and the sub-pixels multiplexed among the pixel units can realize time-sharing multiplexing.
Taking 7680 × 4320@60fps as a video source input, the display device is required to support 3840 × 4320@120fps, and taking the display of a 2G1R1B pixel structure as an example, each pixel structure is composed of two G data, one R data and one B data, the data structure is in the form of GRBG, and each pixel structure controls the display of 4 lamp beads.
Firstly, an RGB image of each frame 7680X 4320 of a video is split into two frames 3840X 4320 of RGB images, the split rule is that all odd columns are merged into a first RGB image, all even columns are merged into a second RGB image, and the split converts the resolution from 7680X 4320 to 3840X 4320. Then the GRBG data required by each pixel structure of the display device is converted, the conversion rule is that G is adjusted to the head and is supplemented with 0 at the tail for the first RGB image, and G is adjusted to the tail for the second RGB image which is supplemented with 0 at the head. And finally, transmitting the converted GRBG images of the first frame and the second frame to a display control module, wherein the display control module controls the display device to display the first frame and then the second frame, and the display control converts the frame rate from 60fps to 120 fps.
It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the present application further provides a sub-pixel rendering apparatus for implementing the above sub-pixel rendering method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more embodiments of the subpixel rendering device provided below may refer to the limitations on the subpixel rendering method in the above description, and details are not repeated here.
In one embodiment, as shown in fig. 4, there is provided a sub-pixel rendering apparatus 400, comprising: an image division module 401 and a display control module 402, wherein:
an image dividing module 401, configured to divide an input image into at least two images to be output, where the at least two images to be output correspond to each pixel unit of a repeating unit of a display device one to one; the display device comprises a plurality of repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel.
A display control module 402, configured to control a display device to sequentially display each image to be output; when each image to be output is displayed, each sub-pixel in the pixel unit corresponding to the displayed image to be output displays the image, and each sub-pixel outside the pixel unit corresponding to the displayed image to be output does not display the image.
In some embodiments, the display frequency of the image to be output is equal to the display frequency of the input image multiplied by the number of pixel cells in the repeating unit.
In some embodiments, the human eye perception locations of the individual pixel cells of the display device are evenly distributed.
In some embodiments, the repeating unit includes a first column of sub-pixels, a second column of sub-pixels, and a third column of sub-pixels arranged at intervals in a first direction, the first direction being a row direction or a column direction of the array; the second column of sub-pixels comprises one blue sub-pixel and at least one red sub-pixel which are arranged at intervals in a second direction, and the second direction is perpendicular to the first direction; the first column of sub-pixels and the third column of sub-pixels respectively comprise green sub-pixels which are in one-to-one correspondence with at least one red sub-pixel of the same repeating unit, and the green sub-pixels, the corresponding red sub-pixels and the blue sub-pixels of the same repeating unit form a pixel unit.
In one implementation, the second column of subpixels each include a blue subpixel and a red subpixel, and the first column of subpixels and the third column of subpixels include a green subpixel; in the same repeating unit, the central connecting line of the blue sub-pixel and the red sub-pixel is coincident with the symmetry axis of the green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
Illustratively, the image dividing module 401 is configured to obtain a first image to be output by taking pixel values of odd lines in the input image as pixel values of odd lines in the image to be output and taking 0 as pixel value of even lines in the image to be output; and taking the pixel values of the even lines in the input image as the pixel values of the even lines in the image to be output, and taking 0 as the pixel values of the odd lines in the image to be output to obtain a second image to be output.
Illustratively, the image dividing module 401 is configured to obtain a first image to be output by taking a pixel value of an odd column in an input image as a pixel value of an odd column in the image to be output and taking 0 as a pixel value of an even column in the image to be output; and taking the pixel value of the even column in the input image as the pixel value of the even column in the image to be output, and taking 0 as the pixel value of the odd column in the image to be output to obtain a second image to be output.
In another implementation, the second column of sub-pixels includes one blue sub-pixel and two red sub-pixels alternately arranged in the second direction, and the first column of sub-pixels and the third column of sub-pixels each include two green sub-pixels arranged at intervals in the second direction; in the same repeating unit, the central connecting line of each red sub-pixel and each blue sub-pixel coincides with the symmetry axis of the corresponding green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
Exemplarily, the image dividing module 401 is configured to obtain a first image to be output by taking a pixel value of an odd-numbered row and an odd-numbered column in an input image as a pixel value of an odd-numbered row and an odd-numbered column in an image to be output and taking 0 as a pixel value of an odd-numbered row and an even-numbered row in an image to be output; taking the pixel values of the odd-numbered rows and the even-numbered columns in the input image as the pixel values of the odd-numbered rows and the even-numbered columns in the image to be output, and taking 0 as the pixel values of the odd-numbered rows and the even-numbered rows in the image to be output to obtain a second image to be output; taking the pixel values of odd columns and even rows in the input image as the pixel values of odd columns and even rows in the image to be output, and taking 0 as the pixel values of odd columns and even rows in the image to be output to obtain a third image to be output; and taking the pixel values of the even rows and the even columns in the input image as the pixel values of the even rows and the even columns in the image to be output, and taking 0 as the pixel values of the odd rows and the even rows and the odd columns in the image to be output to obtain a fourth image to be output.
The modules in the subpixel rendering apparatus may be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 5. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of subpixel rendering. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is further provided, which includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
In an embodiment, a computer program product is provided, comprising a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), Magnetic Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A method of subpixel rendering, said method comprising:
dividing an input image into at least two images to be output, wherein the at least two images to be output correspond to each pixel unit of a repeating unit of display equipment one to one; the display device comprises a plurality of the repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel;
controlling the display equipment to sequentially display each image to be output; and when each image to be output is displayed, displaying the image by each sub-pixel in the pixel unit corresponding to the displayed image to be output, and not displaying the image by each sub-pixel outside the pixel unit corresponding to the displayed image to be output.
2. The method of claim 1, wherein the display frequency of the image to be output is equal to the display frequency of the input image multiplied by the number of pixel cells in the repeating unit.
3. The method according to claim 1 or 2, wherein the human eye perception positions of the individual pixel units of the display device are evenly distributed.
4. The method of claim 3, wherein the repeating unit comprises a first column of sub-pixels, a second column of sub-pixels, and a third column of sub-pixels arranged at intervals in a first direction, the first direction being a row direction or a column direction of the array; the second column of sub-pixels comprises one blue sub-pixel and at least one red sub-pixel which are arranged at intervals in a second direction, and the second direction is perpendicular to the first direction; the first column of sub-pixels and the third column of sub-pixels both comprise green sub-pixels which are in one-to-one correspondence with at least one red sub-pixel of the same repeating unit, and the green sub-pixels, the corresponding red sub-pixels and the blue sub-pixels of the same repeating unit form a pixel unit.
5. The method of claim 4, wherein the second column of subpixels each include a blue subpixel and a red subpixel, and wherein the first column of subpixels and the third column of subpixels include a green subpixel; in the same repeating unit, a central connecting line of the blue sub-pixel and the red sub-pixel coincides with a symmetry axis of a green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
6. The method of claim 5, wherein the dividing the input image into at least two images to be output comprises:
taking the pixel values of the odd lines in the input image as the pixel values of the odd lines in the image to be output, and taking 0 as the pixel values of the even lines in the image to be output to obtain a first image to be output;
taking the pixel values of the even lines in the input image as the pixel values of the even lines in the image to be output, and taking 0 as the pixel values of the odd lines in the image to be output to obtain a second image to be output;
alternatively, the first and second electrodes may be,
taking the pixel value of the odd column in the input image as the pixel value of the odd column in the image to be output, and taking 0 as the pixel value of the even column in the image to be output to obtain a first image to be output;
and taking the pixel value of the even column in the input image as the pixel value of the even column in the image to be output, and taking 0 as the pixel value of the odd column in the image to be output to obtain a second image to be output.
7. The method of claim 4, wherein the second column of sub-pixels comprises one blue sub-pixel and two red sub-pixels alternately arranged in the second direction, and the first column of sub-pixels and the third column of sub-pixels each comprise two green sub-pixels arranged at intervals in the second direction; in the same repeating unit, a central connecting line of each of the red sub-pixels and the blue sub-pixels coincides with a symmetry axis of a corresponding green sub-pixel in the first column of sub-pixels and the third column of sub-pixels.
8. The method of claim 7, wherein the dividing the input image into at least two images to be output comprises:
taking the pixel value of the odd-numbered row and the odd-numbered column in the input image as the pixel value of the odd-numbered row and the odd-numbered column in the image to be output, and taking 0 as the pixel value of the even-numbered row and the even-numbered row in the image to be output to obtain a first image to be output;
taking the pixel values of the odd-numbered rows and the even-numbered columns in the input image as the pixel values of the odd-numbered rows and the even-numbered columns in the image to be output, and taking 0 as the pixel values of the odd-numbered rows and the even-numbered rows in the image to be output to obtain a second image to be output;
taking the pixel values of the odd-numbered columns of the even-numbered rows in the input image as the pixel values of the odd-numbered columns of the even-numbered rows in the image to be output, and taking 0 as the pixel values of the odd-numbered rows and the even-numbered columns in the image to be output to obtain a third image to be output;
and taking the pixel values of the even rows and the even columns in the input image as the pixel values of the even rows and the even columns in the image to be output, and taking 0 as the pixel values of the odd rows and the even rows and the odd columns in the image to be output to obtain a fourth image to be output.
9. A sub-pixel rendering apparatus, the apparatus comprising:
the image dividing module is used for dividing an input image into at least two images to be output, wherein the at least two images to be output correspond to each pixel unit of a repeating unit of the display equipment one by one; the display device comprises a plurality of the repeating units distributed in an array, wherein each repeating unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, at least one of the blue sub-pixel, the red sub-pixel and the green sub-pixel is multiplexed to form at least two pixel units, and each pixel unit comprises one blue sub-pixel, one red sub-pixel and one green sub-pixel;
the display control module is used for controlling the display equipment to sequentially display each image to be output; and when each image to be output is displayed, displaying the image by each sub-pixel in the pixel unit corresponding to the displayed image to be output, and not displaying the image by each sub-pixel outside the pixel unit corresponding to the displayed image to be output.
10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 8.
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