Encoding and decoding methods and encoding and decoding device of range image

An encoding method and depth image technology, which 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: 2013-04-24
HUAWEI TECH CO LTD
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[0004] However, the efficiency of encoding and decoding the depth...

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  • Encoding and decoding methods and encoding and decoding device of range image
  • Encoding and decoding methods and encoding and decoding device of range image
  • Encoding and decoding methods and encoding and decoding device of range image

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Embodiment Construction

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

[0121] In a 3D video system, the depth image contains the depth information of the view image, such as contour information. The depth image is characterized by relatively smooth texture in most areas, and usually only contains Rayleigh boundary information at the object boundary. Therefore, when using the frame When the intra-prediction method enc...

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Abstract

The invention provides encoding and decoding methods and an encoding and decoding device of a range image. The encoding method comprises: an intra-frame prediction mode of a current image block of the range image is got; whether the intra-frame prediction mode belongs to the presupposed intra-frame prediction mode assembly or not is confirmed; and if the intra-frame prediction mode belongs to the presupposed intra-frame prediction mode assembly, a presupposed intra-frame prediction method is adopted to encode the current image block to get a residual error of the current image block. The presupposed intra-frame prediction method comprises a first intra-frame prediction method, the difference of a pixel mean value of the current image block and a pixel mean value of predicted data is calculated to get the residual error of the current image block. Consequently, by the adoption of the presupposed intra-frame prediction method for encoding the current image block, only one residual error is needed to be encoded, accordingly, a decoding end only needs to decode the residual error, and so that the efficiency of encoding and decoding can be improved.

Description

technical field [0001] Embodiments of the present invention relate to image processing technologies, and in particular, to a codec method and a codec device for a depth image. Background technique [0002] In the 3D video image system, there are two types of images, the view image and the depth image. The view image contains the information of the image itself, such as color information, and the depth image contains the depth information of the view image, such as contour information. In the transmission of 3D video images, in order to reduce the bandwidth occupied by video transmission, it is necessary to perform coding processing on video images, including coding processing of view images and depth images, so as to reduce the size of 3D video image data. [0003] In the prior art, an intra-frame prediction method is used for encoding processing of a depth image in a 3D video image system. First, the encoding end divides the image block to be encoded into one or more sub-i...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/46H04N19/147H04N19/182H04N19/593
CPCH04N13/00H04N19/00042H04N19/00769H04N19/597H04N19/11H04N13/161H04N19/593H04N19/182H04N19/105H04N19/159
Inventor 郑萧桢
Owner HUAWEI TECH CO LTD
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