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Sub-pixel rendering method and device for rgb to rgbw image conversion

A sub-pixel rendering and image conversion technology, which is applied in the field of display devices, can solve the problems of low accuracy of sub-pixel rendering results, abnormal color points and jagged images, etc., and achieve the effects of high accuracy, increased correlation, and reduced degree of mutation

Active Publication Date: 2022-02-08
HISENSE VISUAL TECH CO LTD
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Problems solved by technology

[0006] The present invention provides a sub-pixel rendering method and device for RGB to RGBW image conversion, in order to solve the existing RGB to RGBW image conversion, the accuracy of the sub-pixel rendering result is low, using the rendering result, still will Issues that make the final displayed image appear unusually colored dots and jagged

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  • Sub-pixel rendering method and device for rgb to rgbw image conversion

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Embodiment Construction

[0021]In combination with the background technology, it can be seen that in the prior art, in the process of image conversion from RGB to RGBW, the rendering of sub-pixels in the RGBW color gamut of each pixel is performed to reduce the sub-pixels of each pixel in the RGBW color gamut. After sampling, the degree of color mutation between adjacent pixels. However, in practical applications, it is found that the accuracy of sub-pixel rendering in this method is low, resulting in abnormal color dots and aliasing in the final image displayed on the RGBW LCD panel after down-sampling processing. In order to solve this problem, the present invention provides a sub-pixel rendering method and device for RGB to RGBW image conversion.

[0022] The sub-pixel rendering method and device for RGB to RGBW image conversion provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0023] see figure 1 , figure 1 Shown is a schematic fl...

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Abstract

The invention discloses a sub-pixel rendering method and device for RGB to RGBW image conversion. The sub-pixel rendering method includes: according to the R, G and B values ​​of each pixel in an input image, generating the pixel in the RGBW color gamut The color value of each sub-pixel in the sub-pixel; determine the most similar sub-pixel of each sub-pixel; according to the color value of each sub-pixel, the color value of the most similar sub-pixel of the sub-pixel and the previous sub-pixel of the sub-pixel The color value of the sub-pixel is rendered, and the rendered color value of the sub-pixel is generated. The rendered color value of each sub-pixel generated by this method takes into account the color value of the previous sub-pixel and the color value of the most similar sub-pixel in its neighborhood, which increases the color correlation of each sub-pixel and reduces the sudden change of color. The accuracy of the rendering result is higher. Using the rendered color value for subsequent downsampling processing, there will be no abnormal color points and aliasing problems in the final displayed image.

Description

technical field [0001] The present invention relates to the technical field of display devices, in particular to a sub-pixel rendering method and device for RGB to RGBW image conversion. Background technique [0002] In the image display of the RGB type liquid crystal panel, each pixel in the image is composed of red sub-pixel, green sub-pixel and blue sub-pixel, wherein the red sub-pixel, green sub-pixel and blue sub-pixel are respectively composed of white backlight through red filter film, green filter film and blue filter film. In this way, only one-third of the white light passes through each sub-pixel unit of the RGB-type liquid crystal panel, and two-thirds of the white light is lost. As a result, a larger power is required to ensure the brightness of the RGB-type liquid crystal panel. Bright enough. [0003] In order to reduce power consumption while satisfying sufficient brightness of the RGB type liquid crystal panel, an RGBW type liquid crystal panel is usually ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
CPCG09G3/2003
Inventor 刘丽丽田广
Owner HISENSE VISUAL TECH CO LTD
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