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Multi-view image encoding and decoding method and encoder and decoder

A coding and decoding method and coding technology, which are applied in television, image communication, digital video signal modification, etc., can solve the problems of large coding and decoding delays, unfavorable parallel processing of visual images, etc., so as to reduce delay and facilitate The effect of system realization and elimination of dependencies

Active Publication Date: 2008-04-30
HUAWEI TECH CO LTD +1
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Problems solved by technology

[0019] This coding structure uses a large number of inter-frame references, which greatly improves the coding efficiency compared with the direct combination of single-view images. However, due to the coding and decoding dependencies of each viewing image at the same time, the coding and decoding delays Relatively large, and not conducive to parallel processing of each view image

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Embodiment Construction

[0052] The present invention mainly provides a multi-view image encoding and decoding method and an encoding and decoding device to reduce the encoding and decoding delay of encoding different images and improve the parallelism of encoding and decoding different images. Wherein, the parallelism refers to that the encoding (decoding) operation of an image in the current view can be independently completed in the current view without depending on the images in other views at the same time.

[0053] The present invention mainly reduces the encoding delay and improves the parallelism of encoding and decoding by limiting the reference relationship of each viewing image at the same time. Specifically, it can be: directly limit the reference relationship between views at the same time, and only allow encoded reconstructed images at other times as reference images; or, to a certain extent, perform reference between views at the same time The relative limitation of the relationship is ...

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Abstract

The invention relates to a multi-view image coding / decoding method and a coder / decoder thereof. During the coding process of multi-view image, in order to increase the coding efficiency, the image between views is used as reference to utilize the correlation between images of different views, thus other images should be used as reference at this moment, which affects the concurrence of individualview codes and increases the time delay of coding / decoding operation. The invention limits the selection of reference images at the same moment, so as to realize the low time-delay and concurrent processing during the multi-view coding procedure; and simultaneously allows selecting other references between different views at other moments to ensure the coding efficiency. Furthermore, the invention also provides a conception of view group so as to enable the setting of the coding / decoding concurrence more flexible.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a multi-view coding technology. Background technique [0002] Current video coding standards such as the H.261, H.263, H.263+, and H.264 standards formulated by the International Telecommunication Union (ITU, International Telecommunication Union), and the Moving Picture Experts Group (MPEG, Moving Picture Experts Group) The established MPEG-1, MPEG-2, MPEG-3, MPEG-4 and other image coding standards are all based on the hybrid coding (Hybrid Coding) framework. [0003] The hybrid coding framework is a video image coding method that mixes time and space, specifically: when coding, first perform intra-image and inter-image prediction to obtain predicted values ​​to eliminate the correlation in the time domain; Then, according to the difference between the predicted value and the actual value of the original image, the residual image is obtained, and the discrete cosin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/105H04N19/597
Inventor 杨平何芸朱刚许晓中孟新建史舒娟郑建铧郑萧桢
Owner HUAWEI TECH CO LTD