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Image sequence encoding method and device and image sequence decoding method and device

An image and encoding technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of encoding and decoding complexity, and achieve the effect of reducing complexity and quantity

Active Publication Date: 2017-06-09
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0054] The drawback of this process is that the current motion vector predictor derivation for merge mode can reach 11 cycles in the most complex case and at least 5 cycles in the least complex case
Motion vector derivation thus has a significant impact on encoding and decoding complexity

Method used

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  • Image sequence encoding method and device and image sequence decoding method and device
  • Image sequence encoding method and device and image sequence decoding method and device
  • Image sequence encoding method and device and image sequence decoding method and device

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Embodiment Construction

[0153] image 3 A processing device 200 configured to implement at least one embodiment of the invention is schematically shown. The processing device 200 may be a device such as a microcomputer, a workstation, or a thin and light portable device. The device 200 includes a communication bus 213, wherein preferably the communication bus 213 is connected with the following components:

[0154] - a central processing unit 211, denoted CPU, such as a microprocessor;

[0155] - a read-only memory 207, denoted ROM, for storing the computer program used to implement the invention;

[0156] - random access memory 212, denoted as RAM, for storing the executable code of the method of the embodiment of the invention and the following registers, wherein these registers are configured to record and realize the encoding of the sequence of digital images according to the embodiment of the invention variables and parameters required by the methods and / or methods that decode the bitstream; ...

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Abstract

A method and apparatus for deriving at least one motion information predictor for encoding a portion of an image by motion compensation. At least two different first and second subsets of motion information predictors within the first set of motion information predictors are provided. The processing of the first subset of motion information predictors and the processing of the second subset of motion information predictors are performed to obtain a final set of motion information predictors usable for predicting said image portion from the reference image portion. The processing of the second subset may comprise removing duplicate values ​​from the motion information predictors of said second subset, and may be performed to exclude temporal predictors. At least part of the processing of the second subset of motion information predictors may occur concurrently with at least part of the processing of the first subset of motion information predictors.

Description

technical field [0001] The invention relates to a method and a device for encoding a sequence of digital images as well as a method and a device for decoding a corresponding bit stream. The invention also relates to a method and a device for deriving motion information comprising at least one motion information predictor for predicting an image portion of an image predicted by motion compensation relative to at least one reference image portion . [0002] The invention can be applied in the field of digital signal processing, especially in the field of video compression using motion compensation to reduce spatial redundancy and temporal redundancy in video streams. Background technique [0003] Many video compression formats such as H.263, H.264, MPEG-1, MPEG-2, MPEG-4, SVC, etc. use block-based discrete cosine transform (DCT) and motion compensation to remove spatial and temporal redundancy . These formats may be referred to as predictive video formats. Each frame or im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/52H04N19/436H04N19/43H04N19/593H04N19/503
CPCH04N19/107H04N19/43H04N19/436H04N19/44H04N19/503H04N19/52H04N19/593H04N19/105H04N19/127H04N19/139H04N19/176H04N19/50H04N19/513H04N19/109H04N19/117H04N19/122
Inventor G·拉罗彻
Owner CANON KK