Method, device and system for inter-frame predicting encoding and decoding

A technology of inter-frame prediction and coding method, which is applied in the field of communication, can solve problems such as complex implementation, and achieve the effect of improving prediction performance and improving codec efficiency

Inactive Publication Date: 2009-10-14
SNAPTRACK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the calculation of the arithmetic mean is a floating-point calculation, a large number of decimal calculations will complicate the implementation of software and hardware

Method used

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  • Method, device and system for inter-frame predicting encoding and decoding
  • Method, device and system for inter-frame predicting encoding and decoding
  • Method, device and system for inter-frame predicting encoding and decoding

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Embodiment Construction

[0033] In the embodiment of the present invention, a template matching algorithm is used to generate a hypothetical prediction value for a square area of ​​R×R pixels. like figure 1 As shown, a template is defined in the codec block adjacent to the current codec block, figure 1 Among them, the area indicated by 1 is the template area, the area indicated by 2 is the current codec block, the area indicated by 3 is the coded block, that is, the reconstructed area, and the area indicated by 4 is the block to be encoded and decoded.

[0034] like figure 2 As shown, it is a flow chart of the inter-frame predictive encoding method according to the embodiment of the present invention, which specifically includes the following steps:

[0035] Step S201, calculating distortions between a template area of ​​a current encoding block and multiple matching templates in multiple reference frames through a cost function to determine multiple offset vectors. Among them, multiple matching t...

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Abstract

The embodiment of the invention discloses a method, a device and a system for inter-frame predicting encoding and decoding. The method for inter-frame encoding and decoding comprises the following steps: the distortion of the template area of current encoding and decoding modules and a plurality of matched templates of a plurality of reference frames is calculated by the cost function to determine a plurality of offset vectors; a plurality of hypothetical predicting values of the encoding and decoding modules which correspond to the matched templates are acquired according to the determined offset vectors, the template matching predicting values of the current encoding and decoding modules are calculated according to the hypothetical predicting values, and the template matching predicting values are the predicting values of the current encoding and decoding modules acquired by using the template matching technology. The embodiment of the invention improves the predicting performance of the video encoding and decoding system, and increases the encoding and decoding efficiency.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to an inter-frame predictive encoding and decoding method, device, and system. Background technique [0002] In video coding, inter-frame prediction motion compensation plays an important role in improving compression performance. The inter-frame prediction motion compensation technology mainly searches for the most accurate motion vector information of the current codec block in the reference frame, and the motion of the current codec block Vector information occupies a considerable proportion in the code stream of inter-frame coded images. Usually, the motion vector information is generated at the encoding end and encoded into the code stream, and the decoding end performs motion compensation prediction on the current codec block according to the decoded motion vector information. At present, major international video codec standards, such as H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/36H04N7/50
CPCH04N7/26335H04N19/00278H04N7/26244H04N19/00587H04N19/00024H04N19/00175H04N19/00715H04N7/26015H04N19/00533H04N7/366H04N7/26154H04N7/2676H04N19/105H04N19/147H04N19/176H04N19/44H04N19/51H04N19/573H04N19/521
Inventor 斯特芬·坎普马沙斯·维恩熊联欢刘盈嘉
Owner SNAPTRACK
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