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

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...

AI Technical Summary

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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