Method and apparatus for estimating video distortion in AVS video encode

A technology of video distortion and video coding, applied in the field of video coding and decoding, which can solve the problems of long RDO time-consuming and many hardware resources, etc.
CN101409845AInactive Publication Date: 2009-04-15江苏民乐惠商务科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
江苏民乐惠商务科技有限公司
Publication Date
2009-04-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a video distortion estimation method in AVS video coding and a device thereof and belongs to the field of video coding and decoding. The method is as follows: carrying out integer transform on the data of an inputted residue difference value and carrying out zooming on the conversion coefficients; then carrying out quantification on the data after the zooming and simultaneously memorizing the data after the zooming, carrying out inverse quantization on the data after the quantification and comparing the outputted inverse quantization data and the memorized data after the zooming to obtain a distortion value the pixel of which is quantified and inversely quantified. The device comprises a residue difference module, a conversion module, a pre-zooming module, an FIFO module, a quantization module, an inverse quantization module, a post zooming module and a distortion adding module. Compared with the prior art, the invention greatly improves the decision time and reduces the depth of a production line. Simultaneously the arithmetic of the invention is closer to the real distortion and improves the video quality.
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Description

technical field

[0001] The invention relates to a video distortion estimation method in AVS video coding and a device thereof. The method is mainly used in the field of information source processing, especially in the field of video coding and decoding. Background technique

[0002] In video coding and decoding, there are trade-offs between different modes of video in both motion estimation and mode decision-making. The second-generation audio and video standard proposes a cost function C=D+λR based on RDO (Rate-Distortion Optimization). Among them, D represents the degree of distortion of the video, R represents the number of bits required to encode the video, and λ represents the weight factor of D and R, which is the Lagrange daily number.

[0003] The AVS standard is a new video coding technology with independent property rights and independent innovation technology. At present, the video part (AVS-P2) has officially become a national standard. AVS video coding adopts ...

Claims

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