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Depth image encoding and decoding method and encoding and decoding device

An encoding method and a depth image technology are applied in the field of depth image encoding and decoding methods and encoding and decoding devices, and can solve the problem of low efficiency and high

Active Publication Date: 2016-12-28
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] However, the efficiency of encoding and decoding the depth image of the 3D video image by the method of the prior art is not high

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Embodiment Construction

[0120] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0121] In a three-dimensional video system, the depth image contains the depth information of the visual image, such as contour information. The depth image is characterized by smooth texture in most areas, and usually only contains Rayleigh boundary information at the object boundary. Therefore, when using frame When the intra-predic...

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Abstract

Embodiments of the present invention provide an encoding and decoding method and an encoding and decoding device for a depth image. The encoding method includes: acquiring an intra-frame prediction mode of a current image block of a depth image; determining whether the intra-frame prediction mode belongs to a preset intra-frame prediction mode set ; If it belongs, the preset intra-frame prediction method is used to encode the current image block, and the residual of the current image block is obtained. The preset intra-frame prediction method includes the first intra-frame prediction method, and the pixels of the current image block are The difference between the mean value and the pixel mean value of the prediction data of the current image block is to obtain the residual of the current image block. Therefore, the preset intra-frame prediction method is used to encode the current image block, that is, only one residual needs to be encoded. , correspondingly, the decoding end only needs to perform decoding processing on the residual, so the efficiency of encoding and decoding processing can be improved.

Description

Technical field [0001] The embodiments of the present invention relate to image processing technology, and in particular to a coding and decoding method and a coding and decoding device for depth images. Background technique [0002] The three-dimensional video image system includes two types of images: visual image and depth image. The visual image contains the information of the image itself, such as color information, and the depth image contains the depth information of the visual image, such as contour information. In the transmission of 3D video images, in order to reduce the bandwidth occupied by the video transmission, it is necessary to encode the video image, including the encoding processing of the visual image and the depth image, to reduce the size of the 3D video image data. [0003] In the prior art, the intra-frame prediction method is adopted for the encoding process of the depth image in the three-dimensional video image system. First, the encoding end divides th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597H04N19/107H04N19/176H04N19/147H04N19/587H04N19/182H04N19/593
CPCH04N19/597H04N19/11H04N13/161H04N19/593H04N19/182H04N19/105H04N19/159
Inventor 郑萧桢
Owner HUAWEI TECH CO LTD
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