Novel multi-view video fractal coding, compressing and decompressing method

A multi-viewpoint video and fractal coding technology, which is applied in the direction of digital video signal modification, TV, electrical components, etc., can solve the problems of slow coding speed and large amount of calculation, achieve good center bias, improve visual quality, and improve video quality. The Effect of Compression Ratio and Coding Efficiency

Active Publication Date: 2013-01-30
海宁经开产业园区开发建设有限公司
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Problems solved by technology

At present, the typical fractal image and video compression method has a large amount of calculation, the encoding speed is slow, and the quality of decoding needs to be improved, so that the fractal image and video compression method needs further improvement and improvement

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  • Novel multi-view video fractal coding, compressing and decompressing method
  • Novel multi-view video fractal coding, compressing and decompressing method
  • Novel multi-view video fractal coding, compressing and decompressing method

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Embodiment Construction

[0128] The method of the present invention will be further described in detail below with reference to the accompanying drawings, only taking the luminance component Y as an example, the compression steps of the color difference components U and V are the same as those of the luminance component.

[0129] The present invention proposes a new multi-view video fractal coding compression and decompression method. The middle viewpoint is selected as the reference viewpoint, and the video compression method based on center offset pentagonal motion estimation and prediction combined with fractal coding is used. When compressing other viewpoints Fast disparity estimation is added; pre-matching conditions are used to obtain block matching that meets the conditions, and the accuracy of block matching is increased to half-image, which improves the video compression ratio and coding efficiency; taking five-view video as an example, K, L, C, R and S represent a viewpoint video in turn, and...

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Abstract

The invention belongs to the field of three-dimensional (3D) video coding technologies and provides a novel multi-view video fractal coding, compressing and decompressing method. According to the method, mass data of a multi-view 3D video is efficiently compressed so as to be stored and transmitted; in a coding process, the time and space combined prediction is realized, and a video compressing method in which quick disparity estimation and center-biased pentagonal motion estimation/prediction are combined with fractal coding is provided, so that the data redundancy is effectively reduced; a five-view video is taken as an example, K, L, C, R and S sequentially represent a video view point respectively, a prediction structure of C to L to K and C to R to S is provided, namely that both the view point R and the view point L are predicted by using the view point C and the view point S and the view point K are respectively predicted by using the view point R and the view point L, and start frames of the five view points are all frames I; and view point decoding sequences are same, and the blocking effect is removed by adopting a loop filter. The method has the advantages that under the conditions that better video decoding quality is obtained, the coding rate and compression ratio are greatly increased, the operational complexity is reduced, and a foundation for real-time application of multi-view video coding is laid.

Description

Technical field: [0001] The invention belongs to the field of three-dimensional video compression coding, relates to compression coding of multi-viewpoint video, lays a foundation for the real-time application of three-dimensional stereoscopic video coding, and further improves the performance of fractal-based multi-viewpoint stereoscopic video compression coding. Background technique: [0002] Fractal theory was first applied to image compression, and affine transformation was used for compression coding, which greatly improved the coding efficiency and became the mainstream method in fractal image coding. In recent years, some scholars and researchers have applied the method of fractal image compression to the compression of video sequences. The most classic and influential ones refer to (C.S.Kim, R.C.Kim, S.U.Lee. Fractal coding of video sequence using circular prediction mapping and noncontractive interframe mapping[J].IEEE Transactions on Image Processing,1998,7(4):601 ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00H04N7/26H04N19/176H04N19/51H04N19/61
Inventor 祝世平李丽芸张玲
Owner 海宁经开产业园区开发建设有限公司
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