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Object and fractal-based binocular three-dimensional video compression coding and decoding method

A binocular stereo, video compression technology, applied in stereo system, digital video signal modification, TV, etc.

Inactive Publication Date: 2011-02-23
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But compared with monocular video, binocular stereoscopic video system must transmit and store twice the amount of data, so it must be effectively compressed

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  • Object and fractal-based binocular three-dimensional video compression coding and decoding method
  • Object and fractal-based binocular three-dimensional video compression coding and decoding method
  • Object and fractal-based binocular three-dimensional video compression coding and decoding method

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Embodiment Construction

[0077] The method of the present invention will be further described in detail below in conjunction with the accompanying drawings. Only the brightness component Y is taken as an example, and the compression steps of the color difference components U and V are the same as the brightness components.

[0078] The present invention proposes a binocular stereoscopic video compression and decompression method based on objects and fractals. In the binocular stereoscopic video coding, the left channel is used as the basic layer, the right channel is the enhancement layer, and the left channel adopts a separate motion compensation prediction method. (MCP) for encoding. Firstly, the video object segmentation plane, Alpha plane, is obtained by using the video segmentation method, and the block DCT transform coding is used for the left target frame, and the block motion estimation / compensation coding is performed for the left target non-I frame. Then utilize the Alpha plane to distinguis...

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Abstract

The invention provides an object and fractal-based binocular three-dimensional video compression and decompression method. In binocular three-dimensional video coding, a left channel is used as a basic layer, a right channel is used as an enhancement layer, and the left channel is encoded by an independent motion compensation prediction (MCP) mode. The object and fractal-based binocular three-dimensional video compression coding method comprises the following steps of: firstly, acquiring a video object partition plane, namely an Alpha plane by a video partition method, encoding the initial frame of a left eye through block discrete cosine transformation (DCT), and performing block motion estimation / compensation coding on a non-I frame of the left eye; secondly, determining the area attribute of an image block by utilizing the Alpha plane, and if the block is not within a video object area of the current code, not processing an external block, and if the block is within the video object area of the current code completely, searching the most similar matching block by a full-searching method in a previous frame of an internal block, namely a reference frame searching window of a left eye video; and finally, compressing coefficients of an iterated function system by a Huffman coding method, and if part of pixels of the block are within the video object area of the current code, and the other part of pixels are not within the video object area of the current code, processing a boundary block independently. The right channel is encoded by a MCP mode and a disparity compensation prediction (DCP) mode, the MCP is similar to the processing of the left eye, and the block with the minimum error is used as a prediction result. When the DCP coding mode is performed, the polarization and directionality in a three-dimensional parallel camera structure are utilized fully.

Description

Technical field: [0001] The invention belongs to the field of video compression coding, relates to compression coding of binocular stereoscopic video, in particular to a video compression coding method based on objects and fractals. On the premise of ensuring the image quality, the compression ratio is increased to a certain extent, and the speed of fractal binocular stereo video encoding is greatly accelerated, and the encoding time is shortened. Background technique: [0002] The concept of Object-Based (OB) coding was first proposed by the MPEG-4 standard. Using the object-based video compression coding method enables the foreground objects and background objects of each frame of video to be independently coded, which can further improve compression. At the same time, some new functions can be realized at the decoding end, such as independent transmission and decoding for each video object, object and background replacement, object-based video retrieval, especially compar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00H04N7/50H04N7/26H04N19/176H04N19/20H04N19/625
Inventor 祝世平侯仰拴陈菊嫱王再阔
Owner BEIHANG UNIV
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