Method for modeling coding information of video signal for compressing/decompressing coding information

A technology for encoding information and video signals, which is applied in the field of encoding information for modeling video signals to compress/decompress encoding information, and can solve problems such as inability to provide modeling of encoding information, low image quality, and image quality degradation at bit rates

Inactive Publication Date: 2008-07-09
LG ELECTRONICS INC
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Problems solved by technology

[0003] Although low image quality video can be represented by receiving and processing a portion of a sequence of pictures encoded according to a scalable scheme, there is still a problem: the image quality drops significantly when the bit rate is reduced
[0007] However, CABAC has not yet defined a standard for modeling encoded information using multiple layers of information
Thus, when using SVC provided with multiple layers, CABAC cannot provide proper modeling for encoding information with inter-layer dependencies

Method used

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  • Method for modeling coding information of video signal for compressing/decompressing coding information
  • Method for modeling coding information of video signal for compressing/decompressing coding information
  • Method for modeling coding information of video signal for compressing/decompressing coding information

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Embodiment Construction

[0026] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] FIG. 1 is a block diagram of a CABAC executor of an enhancement layer encoder according to a preferred embodiment of the present invention. The CABAC executor shown in FIG. 1 includes a binarizer 101 , a context modeler 102 , and an arithmetic coder 110 . The binarizer 101 binarizes input non-binary value encoded information according to a specified scheme. Specifically, the binarizer 101 converts non-binary-valued syntax elements into binary strings, as shown in FIG. 1 . The context modeler 102 models the binary value based not only on the coding information within adjacent blocks in the same layer (enhancement layer in this example), but also on the base layer coding information or inter-layer relationship information 10 related to the binary value coding information. Encodes every bit of information. The arithmetic coder 110 performs...

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Abstract

The present invention provides a method for context modeling of coding information of a video signal for compressing or decompressing the coding information is provided. An initial value of a function for probability coding of coding information of a video signal of an enhanced layer is determined based on coding information of a corresponding video signal of a base layer.

Description

technical field [0001] The invention relates to a method for modeling encoded information of a video signal to compress the encoded information or to decompress compressed information. Background technique [0002] A scalable video codec (SVC) encodes video as a sequence of pictures with the highest image quality while ensuring that parts of the sequence of encoded pictures (specifically, a portion of the sequence of frames intermittently selected from the entire sequence of frames) can be decoded and used to Low image quality indicates the video. [0003] Although low image quality video can be represented by receiving and processing a part of a sequence of pictures encoded according to a scalable scheme, there remains a problem that the image quality drops significantly when the bit rate is reduced. One solution to this problem is to provide auxiliary picture sequences for low bitrates, for example picture sequences with small screen sizes and / or low frame rates. [0004...

Claims

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Application Information

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IPC IPC(8): H04N7/24
Inventor 全柄文尹度铉朴志皓朴胜煜
Owner LG ELECTRONICS INC
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