CN114360443B - 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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- CN114360443B CN114360443B CN202111443188.3A CN202111443188A CN114360443B CN 114360443 B CN114360443 B CN 114360443B CN 202111443188 A CN202111443188 A CN 202111443188A CN 114360443 B CN114360443 B CN 114360443B
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- 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]
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Abstract
The application relates to a sub-pixel rendering method, a sub-pixel rendering device, computer equipment 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 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 a blue sub-pixel, a red sub-pixel and a green sub-pixel; controlling 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. By adopting the method, sub-pixel rendering can be realized.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a sub-pixel rendering method, apparatus, and computer device.
Background
Sub-Pixel Rendering (SPR) technology is currently introduced in LED (Light Emitting Diode ) display screens. The SPR technology is characterized in that the sub-pixels are multiplexed in a time-sharing manner through rearrangement of the physical structures of the lamp beads, and the vision effect of an image can be overlapped by each image generated by sharing the sub-pixels in a short time by utilizing the temporary characteristic of human eyes, so that the resolution is improved by 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 subpixel rendering method, apparatus, and computer device capable of implementing subpixel rendering.
In a first aspect, the present application provides a sub-pixel rendering method. 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 are in one-to-one correspondence with each pixel unit of a repeating unit of display equipment; 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 the display equipment to sequentially display the images to be output; 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 displaying no 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 perceived locations of the respective pixel units of the display device are evenly distributed.
In one embodiment, 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 a 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 comprise a green sub-pixel which corresponds to at least one red sub-pixel of the same repeating unit one by one, 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 one embodiment, the second column of subpixels each comprise a blue subpixel and a red subpixel, and the first column of subpixels and the third column of subpixels comprise a green subpixel; in the same repeating unit, the central 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 sub-pixel and the third column sub-pixel.
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;
or alternatively, the process may be performed,
taking the pixel values of odd columns in the input image as the pixel values of odd columns in the image to be output, and taking 0 as the pixel values of even columns in the image to be output to obtain a first image to be output;
and taking the pixel values of the even columns in the input image as the pixel values of the even columns in the image to be output, and taking 0 as the pixel values of the odd columns 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 alternately arranged in the second direction; in the same repeating unit, the central line of each of the red sub-pixel and the blue sub-pixel coincides with the symmetry axis of the corresponding green sub-pixel in the first column sub-pixel and the third column sub-pixel.
In one embodiment, the dividing the input image into at least two images to be output includes:
taking pixel values of odd columns and odd columns in an input image as pixel values of odd columns and odd columns in an image to be output, and taking 0 as pixel values of even columns and even columns in the image to be output to obtain a first image to be output;
taking pixel values of even columns of odd rows in the input image as pixel values of even columns of odd rows in the image to be output, and taking 0 as pixel values of odd columns and even rows in the image to be output to obtain a second image to be output;
taking pixel values of even lines and odd columns in the input image as pixel values of even lines and odd columns in the image to be output, and taking 0 as pixel values of odd lines and even columns in the image to be output to obtain a third image to be output;
and taking the pixel values of even lines and even columns in the input image as the pixel values of even lines and even columns in the image to be output, and taking 0 as the pixel values of odd lines and 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 sub-pixel rendering apparatus. The device comprises:
the image dividing module is used for dividing an input image into at least two images to be output, and the at least two images to be output are in one-to-one correspondence with each pixel unit of the repeating unit of the display equipment; 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;
the display control module is used for controlling the display equipment to sequentially display the images to be output; 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 displaying no 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 which when executing the computer program performs the steps of:
dividing an input image into at least two images to be output, wherein the at least two images to be output are in one-to-one correspondence with each pixel unit of a repeating unit of display equipment; 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 the display equipment to sequentially display the images to be output; 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 displaying no image by each sub-pixel outside the pixel unit corresponding to the displayed image to be output.
According to the sub-pixel rendering method, the device and the computer equipment, the input image is divided into at least two images to be output, the at least two images to be output are in one-to-one correspondence with each pixel unit of the repeating units of the display equipment, the display equipment comprises a plurality of repeating units distributed in an array, 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, each pixel unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, the display equipment is controlled to sequentially display each image to be output, when each image to be output is displayed, each sub-pixel in the pixel units corresponding to the displayed image to be output displays the image, and each sub-pixel outside the pixel units corresponding to the displayed image to be output does not display the image, so that time division multiplexing of part of sub-pixels is realized. And the at least two images to be output which are divided into the input images are in one-to-one correspondence with each pixel unit of the repeating unit of the display device, so that when each image to be output is displayed, only each sub-pixel in the pixel unit corresponding to the image is required to be controlled to display the image, and each sub-pixel outside the pixel unit corresponding to the image is not required to display the image, and the sub-pixel for displaying the image and the sub-pixel for not displaying the image are not required to be selected, thereby simplifying the control of the sub-pixels and avoiding complex display driving control.
Drawings
FIG. 1 is a flow chart of a subpixel rendering method according to one embodiment;
FIG. 2 is a pixel layout diagram of a display device in one embodiment;
FIG. 3 is a pixel layout diagram of a display device in another embodiment;
FIG. 4 is a block diagram of a sub-pixel rendering device in one embodiment;
fig. 5 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only 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 illustrated 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 implemented through 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.
Wherein at least two images to be output are in one-to-one correspondence with each pixel unit of the repeating unit of the display device. 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 a blue sub-pixel, a red sub-pixel and a green sub-pixel.
Specifically, the corresponding relation between the pixels in the input image and the pixel units in the display device is obtained, each pixel is allocated to the corresponding pixel unit according to the corresponding relation, and then the pixels corresponding to each pixel unit multiplexing the same sub-pixel form different images to be output.
In step S204, the display device is controlled 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 positions of the pixel units in the display device, corresponding pixels are displayed in the sequence from top to bottom and from left to right, and an image to be output is displayed.
In the sub-pixel rendering method, an input image is divided into at least two images to be output, the at least two images to be output are in one-to-one correspondence with each pixel unit of a repeating unit of a display device, the display device comprises a plurality of repeating units distributed in an array, 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, each pixel unit comprises a blue sub-pixel, a red sub-pixel and a green sub-pixel, the display device is controlled to sequentially display each image to be output, when each image to be output is displayed, each sub-pixel in the pixel units corresponding to the displayed image to be output displays the image, and each sub-pixel outside the pixel units corresponding to the displayed image to be output does not display the image, so that time division multiplexing of part of sub-pixels is realized. And the at least two images to be output which are divided into the input images are in one-to-one correspondence with each pixel unit of the repeating unit of the display device, so that when each image to be output is displayed, only each sub-pixel in the pixel unit corresponding to the image is required to be controlled to display the image, and each sub-pixel outside the pixel unit corresponding to the image is not required to display the image, and the sub-pixel for displaying the image and the sub-pixel for not displaying the image are not required to be selected, thereby simplifying the control of the sub-pixels and avoiding complex display driving control.
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 an input image is 60fps, the number of pixel units in a repeating unit is two, and the display frequency of an image to be output is 120fps.
In one embodiment, as shown in fig. 2 and 3, the human eye perceived positions of the respective pixel units of the display device are uniformly distributed (the human eye perceived 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 subpixels, a second column of subpixels, and a third column of subpixels 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 includes one blue sub-pixel and at least one red sub-pixel arranged at intervals in a second direction, which 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 corresponding to at least one red sub-pixel of the same repeating unit one by one, 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 where G is located represents the green sub-pixel, a circle where R is located represents the red sub-pixel, and a circle where B is located represents the blue sub-pixel).
The human eyes are most sensitive to the perception of green light, the center of the human eye perception position of each pixel unit is closest to the green sub-pixel, and the human eye perception positions of each pixel unit of the display device can be uniformly distributed by the green sub-pixel positioned on two sides of the whole blue sub-pixel and the red sub-pixel, so that the imaging of the display device is uniform, and the situation of color edges, uneven colors, blurred textures and the like is avoided.
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 column of subpixels and the third column of subpixels include a green subpixel. In the same repeating unit, the central connection line of the blue sub-pixel and the red sub-pixel is overlapped with the symmetry axis of the green sub-pixel in the first column sub-pixel and the third column sub-pixel.
In the above manner, the pixel structures of the 2G1R1B common RB are formed, and each pixel structure can form two pixel units. The mode can be rotated by 90 degrees to form a vertical direction, but only can support the single direction to expand the visual resolution, and the pixel structure is simple.
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.
By the above definition, the human eye perception positions of the pixel units of the display device are evenly distributed.
Illustratively, this 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.
Illustratively, this step S202 includes: taking the pixel values of odd columns in the input image as the pixel values of odd columns in the image to be output, and taking 0 as the pixel values of even columns in the image to be output to obtain a first image to be output; and taking the pixel values of even columns in the input image as the pixel values of even columns in the image to be output, and taking 0 as the pixel values of odd columns in the image to be output to obtain a second image to be output.
In the two implementations, the other pixel units are controlled to be not displayed by supplementing 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 division 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 alternately arranged in the second direction; in the same repeating unit, the center 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 sub-pixel and the third column sub-pixel.
By forming the 4G2R1B pixel structures in the above manner, each pixel structure can form four pixel units, and the visual resolution can be extended 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.
By the above definition, the human eye perception positions of the pixel units of the display device are evenly distributed.
Illustratively, this step S202 includes: taking pixel values of odd columns and odd columns in an input image as pixel values of odd columns and odd columns in an image to be output, and taking 0 as pixel values of even columns and even columns in the image to be output to obtain a first image to be output; taking pixel values of even columns of odd lines in the input image as pixel values of even columns of odd lines in the image to be output, and taking 0 as pixel values of odd columns and even lines in the image to be output to obtain a second image to be output; taking pixel values of even lines and odd columns in the input image as pixel values of even lines and odd columns in the image to be output, and taking 0 as pixel values of odd lines and even columns in the image to be output to obtain a third image to be output; and taking pixel values of even columns and even columns in the input image as pixel values of even columns and even columns in the image to be output, and taking 0 as pixel values of odd columns and odd columns in the image to be output to obtain a fourth image to be output.
The other pixel units are controlled to be not displayed through the 0 compensation, so that the display device only displays the image to be output, and the sub-pixels multiplexed among the pixel units can realize time division multiplexing.
Taking 7680x4320@60fps as video source input, the display device is required to support 3840 x 4320@120fps, and taking the display of 2G1R1B pixel structures as an example, each pixel structure consists 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 4 lamp beads to display.
Firstly, each frame 7680x4320 RGB image of the video is split into two frames 3840 x4320 RGB images, the splitting rule is that all odd columns are combined into a first RGB image, all even columns are combined into a second RGB image, and resolution is converted into 3840 x4320 from 7680x4320. Then converting the GRBG data required by each pixel structure of the display device, wherein the conversion rule is that the first RGB image adjusts G to the first position and 0 is complemented at the end, and the second RGB image adjusts G to the end by 0 is complemented at the first position. And finally, transmitting the converted first frame and second frame GRBG images to a display control module, wherein the display control module firstly controls the display equipment to display the first frame and then display the second frame, and the display control converts the frame rate from 60fps to 120fps.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a sub-pixel rendering device for implementing the sub-pixel rendering method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of one or more sub-pixel rendering devices provided below may be referred to the limitation of the sub-pixel rendering method hereinabove, and will not be repeated here.
In one embodiment, as shown in fig. 4, there is provided a sub-pixel rendering apparatus 400 including: an image dividing 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 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 a blue sub-pixel, a red sub-pixel and a 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 perceived locations of the individual pixel cells of the display device are evenly distributed.
In some embodiments, the repeating unit includes a first column of subpixels, a second column of subpixels, and a third column of subpixels 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 a 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 comprise a green sub-pixel corresponding to at least one red sub-pixel of the same repeating unit one by one, and the green sub-pixel and the corresponding red sub-pixel as well as the blue sub-pixel 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 connection line of the blue sub-pixel and the red sub-pixel is overlapped with the symmetry axis of the green sub-pixel in the first column sub-pixel and the third column sub-pixel.
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 0 as pixel values 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.
The image dividing module 401 is configured to obtain a first image to be output by taking pixel values of odd columns in the input image as pixel values of odd columns in the image to be output and 0 as pixel values of even columns in the image to be output; and taking the pixel values of even columns in the input image as the pixel values of even columns in the image to be output, and taking 0 as the pixel values of odd columns in the image to be output to obtain a second image to be output.
In another implementation, the second column of subpixels includes one blue subpixel and two red subpixels alternately arranged in the second direction, and the first column of subpixels and the third column of subpixels each include two green subpixels alternately arranged in the second direction; in the same repeating unit, the center 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 sub-pixel and the third column sub-pixel.
The image dividing module 401 is configured to take pixel values of odd columns and odd columns in the input image as pixel values of odd columns and odd columns in the image to be output, and 0 as pixel values of even columns and even columns in the image to be output, so as to obtain a first image to be output; taking pixel values of even columns of odd lines in the input image as pixel values of even columns of odd lines in the image to be output, and taking 0 as pixel values of odd columns and even lines in the image to be output to obtain a second image to be output; taking pixel values of even lines and odd columns in the input image as pixel values of even lines and odd columns in the image to be output, and taking 0 as pixel values of odd lines and even columns in the image to be output to obtain a third image to be output; and taking pixel values of even columns and even columns in the input image as pixel values of even columns and even columns in the image to be output, and taking 0 as pixel values of odd columns and odd columns in the image to be output to obtain a fourth image to be output.
The respective modules in the sub-pixel rendering apparatus described above may be implemented in whole or in part by software, hardware, and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which 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 includes a non-volatile 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 the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode 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 sub-pixel rendering method. 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, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, there is also provided a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various 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 (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-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 units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (5)
1. A sub-pixel rendering method, the method comprising:
dividing an input image into at least two images to be output, wherein the at least two images to be output are in one-to-one correspondence with each pixel unit of a repeating unit of display equipment; 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 the display equipment to sequentially display the images to be output; 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, wherein each sub-pixel outside the pixel unit corresponding to the displayed image to be output does not display the image;
the human eye perception positions of the pixel units of the display equipment are uniformly distributed;
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 a 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 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;
the second column of sub-pixels comprises one blue sub-pixel and two red sub-pixels which are 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 which are alternately arranged in the second direction; in the same repeating unit, the central connecting line of each red sub-pixel and each blue sub-pixel is overlapped with the symmetry axis of the corresponding green sub-pixel in the first column sub-pixel and the third column sub-pixel;
the dividing the input image into at least two images to be output includes:
taking pixel values of odd columns and odd columns in an input image as pixel values of odd columns and odd columns in an image to be output, and taking 0 as pixel values of even columns and even columns in the image to be output to obtain a first image to be output;
taking pixel values of even columns of odd rows in the input image as pixel values of even columns of odd rows in the image to be output, and taking 0 as pixel values of odd columns and even rows in the image to be output to obtain a second image to be output;
taking pixel values of even lines and odd columns in the input image as pixel values of even lines and odd columns in the image to be output, and taking 0 as pixel values of odd lines and even columns in the image to be output to obtain a third image to be output;
and taking the pixel values of even lines and even columns in the input image as the pixel values of even lines and even columns in the image to be output, and taking 0 as the pixel values of odd lines and odd columns in the image to be output to obtain a fourth image to be output.
2. The method of claim 1, wherein the frequency of display of the image to be output is equal to the frequency of display of the input image multiplied by the number of pixel cells in the repeating unit.
3. 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, and the at least two images to be output are in one-to-one correspondence with each pixel unit of the repeating unit of the display equipment; 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;
the display control module is used for controlling the display equipment to sequentially display the images to be output; 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, wherein each sub-pixel outside the pixel unit corresponding to the displayed image to be output does not display the image;
the human eye perception positions of the pixel units of the display equipment are uniformly distributed;
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 a 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 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;
the second column of sub-pixels comprises one blue sub-pixel and two red sub-pixels which are 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 which are alternately arranged in the second direction; in the same repeating unit, the central connecting line of each red sub-pixel and each blue sub-pixel is overlapped with the symmetry axis of the corresponding green sub-pixel in the first column sub-pixel and the third column sub-pixel;
the image dividing module is used for taking pixel values of odd columns and odd columns in an input image as pixel values of odd columns and odd columns in an image to be output, and taking 0 as pixel values of even columns and even columns in the image to be output to obtain a first image to be output; taking pixel values of even columns of odd rows in the input image as pixel values of even columns of odd rows in the image to be output, and taking 0 as pixel values of odd columns and even rows in the image to be output to obtain a second image to be output; taking pixel values of even lines and odd columns in the input image as pixel values of even lines and odd columns in the image to be output, and taking 0 as pixel values of odd lines and even columns in the image to be output to obtain a third image to be output; and taking the pixel values of even lines and even columns in the input image as the pixel values of even lines and even columns in the image to be output, and taking 0 as the pixel values of odd lines and odd columns in the image to be output to obtain a fourth image to be output.
4. A device according to claim 3, 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 units in the repeating unit.
5. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of claim 1 or 2 when executing the computer program.
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