Method and device for decoding based on intra prediction

A technology of intra-frame prediction and decoding method, which is applied in the direction of TV, electrical components, pulse modulation TV signal transmission, etc., can solve the problem of low compression efficiency and achieve the effect of improving compression efficiency

Active Publication Date: 2013-01-02
HUAWEI TECH CO LTD
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  • Method and device for decoding based on intra prediction
  • Method and device for decoding based on intra prediction
  • Method and device for decoding based on intra prediction

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Embodiment Construction

[0018] 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 some of the embodiments of the present invention, but not all of them. 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.

[0019] Video encoders or decoders are widely used in various electronic devices, such as mobile phones, laptops, MP3 / MP4, handheld computers, cameras, and video surveillance equipment. The video encoder or decoder can be realized by a digital processing circuit, such as a DSP chip, or can be realized by calling software codes by a processor (such as a CPU).

[0020] In the new generation of video coding and decoding technology, a rectangular block intr...

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Abstract

An embodiment of the invention provides a method and a device for decoding based on intra prediction. The method includes: acquiring one or more segmentation marks, a segmentation shape mark and a segmentation direction mark for a current prediction unit from a compressed code flow of video images; finally segmenting the current prediction unit into a plurality of square transformation units or a plurality of rectangular transformation units according to the acquired one or more segmentation marks, the segmentation shape mark and the segmentation direction mark; and subjecting each square transformation unit in the multiple square transformation units obtained in final segmentation or each rectangular transformation unit in the multiple rectangular transformation units obtained in final segmentation to decoding procedures. According to the method and the device for decoding based on intra prediction, video image compression efficiency can be improved by segmenting the same prediction unit into the square transformation units or rectangular transformation units.

Description

technical field [0001] Embodiments of the present invention relate to the field of image processing, and more specifically, relate to a decoding method and a decoding device based on intra-frame prediction. Background technique [0002] In order to save the bandwidth of network transmission, usually the video image is compressed and encoded by the encoder at the sending end, and then transmitted to the receiving end through the network, and the receiving end recovers the video image after decompressing through the decoder. The sending end or receiving end can be a mobile phone, a portable computer, a handheld computer, a video camera, a video surveillance device, and the like. [0003] In the decoding scheme of the video image compression code stream, a prediction module and a transformation module for the image block signal are usually included. The prediction module predicts the current image block signal according to the decoded information to obtain a prediction signal....

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Application Information

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IPC IPC(8): H04N7/34H04N7/32H04N7/26H04N19/593
CPCH04N19/00278H04N7/26H04N7/34H04N7/32H04N19/00763H04N19/00545H04N19/00072H04N19/119H04N19/176H04N19/46H04N19/593
Inventor 杨海涛赖昌材
Owner HUAWEI TECH CO LTD
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