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Color Residual Prediction for Video Coding

A technology of residual prediction and video decoder, applied in the field of video decoding

Active Publication Date: 2018-11-23
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Spatial or temporal prediction leads to a predictive block of the block to be decoded

Method used

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  • Color Residual Prediction for Video Coding
  • Color Residual Prediction for Video Coding
  • Color Residual Prediction for Video Coding

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0025] The present invention is related to the fields of video coding and compression. In particular, the invention described can be used to color residual video blocks using chroma sub-sampling formats other than 4:4:4, such as 4:2:2 or 4:2:0 chroma sub-sampling formats. predictive technology.

[0026] Color residual prediction is a video encoding technique that involves predicting chroma residual values ​​(eg, both Cr and Cb chroma values ​​in a YCrCb video block) from reconstructed luma (Y) residual values. Since the luma residual values ​​of a video data block are often correlated with the chroma residual values, further prediction of the chroma residual values ​​will result in greater compression and increased coding efficiency.

[0027] To perform color residual prediction, the chrominance of a block can first be predicted from the chrominance values ​​of another block within the same picture (e.g. intra prediction) or from another block in another picture (e.g. inter p...

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Abstract

A method of decoding video data includes decoding a first block of video data to produce a block of reconstructed luma residual values and a block of predicted chroma residual values, wherein the block of video data has one of a 4:2:0 or a 4:2:2 chroma sub-sampling format. The method further includes performing a color residual prediction process to reconstruct a block of chroma residual values for the first block of video data using a subset of the reconstructed luma residual values as luma predictors for the block of predicted chroma residual values.

Description

[0001] This application claims the benefit of US Provisional Application No. 61 / 899,038, filed November 1, 2013, which is incorporated herein by reference in its entirety. technical field [0002] The present invention relates to video coding. Background technique [0003] Digital video capabilities can be incorporated into a wide variety of devices, including digital television, digital broadcast systems, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, tablet computers, e-book readers, Digital cameras, digital recording devices, digital media players, video game devices, video game consoles, cellular or satellite radiotelephones (so-called "smart phones"), video teleconferencing devices, video streaming devices, etc. Digital video devices implement video compression techniques such as those defined in MPEG-2, MPEG-4, ITU-T H.263, ITU-T H.264 / MPEG-4 Part 10 Advanced Video Coding (AVC) , the video compression techniques described ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/105H04N19/50H04N19/186
CPCH04N19/105H04N19/186H04N19/50H04N19/61H04N19/103H04N19/136H04N19/176H04N19/59
Inventor 金佑植濮伟陈建乐霍埃尔·索赖 罗哈斯郭立威马尔塔·卡切维奇
Owner QUALCOMM INC