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A depth image intra-frame encoding and decoding method, device and codec

A technology of depth image and intra-frame coding, applied in the field of video coding and decoding, can solve the problems of coding or decoding depth block occupancy rate, improving the quality of synthetic viewpoints, etc. Effect

Inactive Publication Date: 2017-07-07
LG ELECTRONICS (CHINA) R&D CENT CO LTD
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Problems solved by technology

[0004] To sum up, in the above two cases, the residual error of encoding or decoding the depth block needs to occupy the code rate but cannot bring about the improvement of the quality of the synthetic view

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  • A depth image intra-frame encoding and decoding method, device and codec
  • A depth image intra-frame encoding and decoding method, device and codec
  • A depth image intra-frame encoding and decoding method, device and codec

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] In order to solve the problems existing in the prior art, the embodiment of the present invention proposes that in the depth image intra-frame coding mode, an intra-frame skip coding mode is introduced, in which the residual of the depth image is not coded.

[0051] Such as figure 1 As shown, it is a flowchart of a depth image intra-frame coding method according to an embodiment of the present invention. The depth image intra-frame coding method is appl...

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Abstract

The present invention provides a depth image intra-frame encoding and decoding method, device, and codec. The encoding method is applied to three-dimensional video encoding or multi-view video encoding, including: when performing intra-frame encoding on a prediction unit of a depth image, Judging whether to adopt the intra-frame skip coding mode; if it is determined to adopt the intra-frame skip coding mode, setting the residual data of the prediction unit to zero, and not encoding the residual data. The decoding method is applied to three-dimensional video decoding or multi-view video decoding, including: when performing intra-frame decoding on a prediction unit of a depth image, judging whether the encoder side adopts the intra-frame skip coding mode; If the encoding mode is skipped in the frame, the residual data of the prediction unit is set to zero, and the residual data is not decoded. The invention reduces the code rate required for coding the depth image, improves the coding and decoding efficiency without destroying the structure of the existing image unit, and is beneficial to the realization of hardware.

Description

technical field [0001] The present invention relates to the technical field of video encoding and decoding, in particular to a depth image intra-frame encoding and decoding method, device and codec. Background technique [0002] In 3D video coding or multi-view applications, depth images can be used to provide more flexible views. Depth information is different from texture information, it is not used for direct display, but first converted into disparity information (disparity vector), and then used together with texture information to generate a synthetic viewpoint. [0003] In the process of generating a synthetic view, the distortion of the depth block has little effect on the distortion of the synthetic view in the following two cases: 1. The distortion of the depth value does not cause the distortion of the disparity information, 2. The area near the texture value corresponding to the current depth value Very smooth. [0004] It can be seen from the above that in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N13/00
Inventor 贾杰刘鸿彬
Owner LG ELECTRONICS (CHINA) R&D CENT CO LTD
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