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A method and device for inter-frame and intra-frame joint prediction encoding and decoding with configurable weights

An intra-frame prediction and predictive coding technology, applied in image communication, digital video signal modification, electrical components, etc., can solve problems affecting coding efficiency, reduce temporal correlation and spatial correlation, etc., to achieve efficient coding and improve compression. performance, the effect of improving compression efficiency

Active Publication Date: 2021-10-01
ZHEJIANG SMART VIDEO SECURITY INNOVATION CENT CO LTD
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Problems solved by technology

[0007] The selection of weights in the above scheme is very limited, and is limited by whether the upper or left adjacent blocks are available, and does not fully reduce the temporal correlation and spatial correlation at the same time, which affects the coding efficiency

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  • A method and device for inter-frame and intra-frame joint prediction encoding and decoding with configurable weights
  • A method and device for inter-frame and intra-frame joint prediction encoding and decoding with configurable weights
  • A method and device for inter-frame and intra-frame joint prediction encoding and decoding with configurable weights

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specific Embodiment 1

[0049] Specific embodiment 1, a coding sequence-intra-frame-inter-frame joint technology weight calculation method correspondence table is preset:

[0050]

[0051] The above examples are improved based on the existing encoding order and weight calculation methods of the VCC standard. It can be expected that new scanning methods, such as horizontal scanning from right to left, vertical scanning from bottom to top, and diagonal scanning from bottom right to top left, may also be adopted. It can be expected that corresponding to different coding sequences- The weight calculation method of the joint intra-frame and inter-frame technology can also be adjusted accordingly.

[0052] Further, in a preferred embodiment of a weight configurable coding method of the present invention, the candidate intra-frame coding order includes but is not limited to raster and Z-scan order.

[0053] Existing technology: In the international video coding standard High Efficiency Video Coding (HEV...

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Abstract

The present invention relates to a method and device for inter-frame and intra-frame joint prediction encoding and decoding with configurable weights, which performs inter-frame and intra-frame joint prediction on a coding unit or block unit, and determines at least one candidate intra-frame coding sequence; selects at least A candidate intra-frame encoding order is used as a reference encoding order, and weight data is determined according to the reference encoding order and the encoding order of the current prediction unit; and the weight data of the current prediction unit is encoded and / or transmitted. The present invention enables coding blocks to use the reference pixels on the lower side and the right side, which can adapt to images with different spatial correlations, and the newly designed interpolation / extrapolation prediction technology can make full use of the surrounding reference pixels to further improve the accuracy of prediction , it is no longer limited to whether the upper or left adjacent blocks are available, thereby improving the overall compression performance, realizing high-efficiency coding, and further improving the compression efficiency of video data.

Description

technical field [0001] The present invention relates to the technical field of multimedia processing, in particular to a method and device for inter-frame and intra-frame joint prediction encoding and decoding with configurable weights. Background technique [0002] Intra-frame prediction and inter-frame prediction technologies are commonly used in most current video coding and decoding technologies. Among them, inter-frame prediction uses the correlation between the current frame and its reference frame to reduce temporal redundancy, while intra-frame prediction uses the similarity between spatially adjacent pixels to eliminate spatial redundancy. [0003] However, in all video codec standards before the H266 / VCC standard, only one of intra-frame prediction and inter-frame prediction can be selected for a coding block. The H266 / VCC standard has improved this and introduced CIIP, which is the joint intra-frame and inter-frame technology. In the CIIP technology, the intra p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/503H04N19/593H04N19/129H04N19/96
CPCH04N19/503H04N19/593H04N19/129H04N19/96
Inventor 洪一帆向国庆滕波葛强杨光芒周东东吴亮王琪
Owner ZHEJIANG SMART VIDEO SECURITY INNOVATION CENT CO LTD
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