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Multi-video encoding and decoding method and device

A video encoding and encoding technology, applied in the field of encoding and decoding, to achieve the effect of improving the efficiency of multi-view video encoding and decoding

Inactive Publication Date: 2008-07-16
HUAWEI TECH CO LTD +1
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  • Description
  • Claims
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Problems solved by technology

However, at present, in the buffer corresponding to multi-view video coding, there is no processing mechanism to ensure that the images in the buffer satisfy the principle of sorting according to the optimal prediction effect

Method used

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  • Multi-video encoding and decoding method and device
  • Multi-video encoding and decoding method and device

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Embodiment Construction

[0041] Since the prediction structure of multi-view video codec is various, that is, there are predictions between different views in multi-view video codec, therefore, in the case of multi-view video codec, it is necessary to use a new algorithm to construct the current image reference A frame list, so as to effectively use the reference frame list to perform image encoding and decoding operations, and improve multi-view video encoding and decoding efficiency.

[0042] That is to say, in the process of encoding and decoding multi-view images, in order to improve the encoding efficiency, images of multiple views need to be used as reference images (ie, reference frames) for the predictive encoding process. Since images of different views have different prediction effects on the current image, when encoding the current image, it is necessary to effectively arrange the sequence of the reference images according to the prediction effect to greatly improve the encoding efficiency. ...

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Abstract

The invention relates to a multi-video coding and decoding method and a device. The method mainly comprises the following steps that: firstly, the reference distance between a reference image and a current image is determined according to the time distance and the space distance between the reference image and the current image; a reference image with at least one frame adopted by the current image is chosen and determined according to a reference distance of each candidate reference image and the reference image is adopted to code and decode the current image. Therefore, the invention can realize the optimal predicting effect by adopting the image in a current reference cache under the circumstance that an additional reference cache is not necessary, thereby raising the multi-video coding and decoding efficiency.

Description

technical field [0001] The present invention relates to the field of codec technology, in particular to a video codec technology. Background technique [0002] At present, image coding standards such as MPEG-1 (MPEG, i.e. Moving Picture Experts Group, Moving Picture E×perts Group), MPEG-2, MPEG-3, MPEG-4 that the video coding standard formulates are all based on hybrid On top of the Hybrid Coding framework. [0003] The hybrid coding framework is a video image coding method of a hybrid time and space, which specifically includes in the coding process: [0004] (1) Predict the image to be encoded in the image and between the images to obtain the predicted value, so as to eliminate the time-domain correlation between the images in the encoding process; [0005] (2) According to the difference between the predicted value and the actual value of the original image, the residual image is obtained, and the discrete cosine transform method or other transformation methods are used...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N7/26H04N19/593
CPCH04N19/43H04N19/51H04N19/58H04N19/597
Inventor 杨平朱刚许晓中何芸郑萧桢郑建铧孟新建史舒娟
Owner HUAWEI TECH CO LTD
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