Image format conversion method, device and video processing apparatus

By determining the target encoding mode and chromaticity component output values ​​of pixel blocks, the image display quality problem in YUV format conversion is solved, realizing an efficient image format conversion method and reducing hardware resource consumption.

CN115914637BActive Publication Date: 2026-06-26XIAN NOVASTAR TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN NOVASTAR TECH
Filing Date
2021-09-30
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies, when converting YUV422 format images to YUV444 format, naturally result in color bleeding, color cast, and jagged edges at the image edges, causing blurred and broken lines in the computer screen content, leading to a decrease in image display quality.

Method used

By determining multiple pixel blocks and various encoding modes, the target encoding mode is determined by calculating the luminance component deviation value, and the chrominance component is encoded to generate the chrominance component output value. At the same time, the target mode index value, luminance component and chrominance component are output, reducing the transmission bandwidth and ensuring image quality.

Benefits of technology

It effectively improves image display quality, reduces transmission bandwidth, lowers hardware resource consumption, and avoids the process of repeatedly calculating the target encoding mode.

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Abstract

The embodiment of the present application provides a kind of image format conversion method, device and video processing equipment.The method comprises the steps of: obtaining the image to be converted;Determine a plurality of pixel blocks and a plurality of encoding modes based on the image to be converted, wherein the plurality of encoding modes correspond to a plurality of mode index values;According to the luminance component deviation value of the pixel block under the plurality of encoding modes respectively, determine the target encoding mode of the pixel block, wherein the target encoding mode is one of the plurality of encoding modes;Based on the target encoding mode, a plurality of chrominance components of the pixel block are encoded to obtain a plurality of chrominance component output values of the pixel block;According to the target encoding mode, determine the target mode index value from the plurality of mode index values;Based on the target mode index value, a plurality of luminance components and the plurality of chrominance component output values, obtain target data and output.
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