Decode method and apparatus for de-block effect filtering based on boundary strength factor

A technology of boundary strength and deblocking effect, applied in the field of video encoding and decoding, can solve the problems of large storage space, long delay of reading and storage operations, etc., and achieve the effect of improving system efficiency, reducing size requirements, and reducing delay

Inactive Publication Date: 2009-07-01
CHIPNUTS TECH INC
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Problems solved by technology

[0011] In the decoding process of the prior art, it is necessary to separately save the macroblock information required for the acquisition of the boundary strength factor and obtain the boundary strength factor after obtaining the reconstructed value of the predicted macroblock data and the residual block data The solution may have the problems of large required storage space and long delay in reading and storing operations. The present invention uses the method of extracting the required macroblock information for processing before obtaining the reconstructed value of the predicted macroblock data and residual block data. Control method and device for obtaining boundary strength factor

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  • Decode method and apparatus for de-block effect filtering based on boundary strength factor
  • Decode method and apparatus for de-block effect filtering based on boundary strength factor
  • Decode method and apparatus for de-block effect filtering based on boundary strength factor

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[0028] In order to better understand the present invention, the following will be further described in conjunction with specific embodiments of the present invention, and the technical background details related to the technical solution of the present invention will be explained first.

[0029] Codec scheme of video decoding chip:

[0030] Existing video chips generally perform prediction based on previously coded data to generate predicted macroblock data of the current macroblock. The predicted macroblock data is subtracted from the current macroblock data to obtain residual block data of the current macroblock. The residual block data is compressed and transmitted to a video decoder. At the same time, the information transmitted to the video decoder also includes all the information necessary for the video decoder to repeat the prediction process (such as motion vector, prediction mode, etc.). The video decoder generates the same predicted macroblock data, processes it w...

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Abstract

The invention provides a decoding method based on edge intensity factors for conducting the de-blocking filter in the video compression processing, wherein, the acquisition of edge intensity factors is finished before the acquisition of the predication macro-block data and the residual block data. The method has the advantages that the current macro-block information can be released from a memory area in advance, and the needed information for the reference to macro blocks share the information existed in other storage area, so that the on-chip memory space in the decoding device is not exclusively occupied, and the memory space is in no need of being externally connected. Therefore, the demand on the memory device is reduced, the problems, such as the delay caused by the repeated memory, and the like are reduced, and the system efficiency is improved.

Description

technical field [0001] The present invention relates to video coding and decoding technology, in particular to a method and a corresponding device for determining a boundary strength factor and using it in a deblocking filter in video coding and decoding. Background technique [0002] In many important video coding standards, such as H.264, VC-1, and AVS standards, block-based motion estimation and compensation are widely used to reduce the temporal redundancy of video sequences to obtain higher coding efficiency. The scheme provides an efficient temporal model for many video streams. In the block-based hybrid coding scheme, the image after inverse transformation and quantization at the decoding end will appear blockiness caused by DCT transformation and motion compensation prediction of block-based intra-frame and inter-frame prediction residuals. This blocking artifact is a common artifact of compression algorithms based on block coding. [0003] Therefore, a deblocking ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/186H04N19/423H04N19/55H04N19/86H04N19/88
Inventor 罗忠祥
Owner CHIPNUTS TECH INC
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