De-block effect filter capable of supporting multi-video standard

A filter device and deblocking technology, applied in the multimedia field, can solve problems such as increased system cost and complex out-of-loop filter circuits, and achieve the effects of reducing hardware costs, improving visual quality, and good deblocking performance

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

Therefore, in a system that supports multiple video standards, such as a system that supports both the H.264 video standard and the MPEG-4 video standard, in order to improve the visual effect of the decoded image, at least two sets of filter circuits are necessa

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  • De-block effect filter capable of supporting multi-video standard
  • De-block effect filter capable of supporting multi-video standard
  • De-block effect filter capable of supporting multi-video standard

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0017] According to the present invention, there is provided a filtering device 1 that can be used to perform deblocking filtering on in-loop decoded images and deblocking filtering on out-loop decoded images in a video codec system, figure 1 is a block diagram of the filtering device 1 . Through the filtering device 1, not only support for in-loop filtering of H.264 video images, but also support for out-of-loop filtering of video images such as MPEG-4, AVS and VC-1 video images are realized. As shown in the figure, the filtering device 1 includes: an in-loop judging device 11, which is used to judge the degree of block effect of the decoded image in the loop in the video codec system, and generate in-loop filtering instruction information; a filtering...

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Abstract

The invention provides a device for realizing the in-loop de-blocking filter and out-loop de-blocking filter of the video-decoding image by adopting a loop filter in an H.264 video coding and decoding system. The invention further provides a set of control methods used for choosing the filters which execute relevant strength according to the out-loop video image information. Through the adoption of the loop filter circuit of the H.264 video decoding system, the invention realizes the support for the in-loop de-blocking filter function and the out-loop de-blocking filter function in a multi-video standard system, reduces the cost of the circuit hardware, and provides the good de-blocking performance so as to improve the visual quality of a user.

Description

technical field [0001] The invention relates to a video image deblocking effect filtering technology in the multimedia field, in particular to a filtering device for video image deblocking effect capable of supporting multiple video standards. Background technique [0002] In the process of compressing and encoding video images, in order to eliminate the spatial correlation of video image data frames, the pixels of each frame are usually divided into several N×N pixel blocks, called macroblocks. Generally, N is 16 . Wherein, each macroblock can be further divided into several sub-blocks of 16×8, 8×16, 8×8 or 4×4, and in the encoding process of the video image, the divided sub-blocks are divided into The basic unit of video image coding and motion estimation. The above-mentioned method for encoding video images in blocks can reduce the information redundancy in the space of video image data frames, and realize the compression of the amount of transmitted video image data. ...

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Application Information

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IPC IPC(8): H04N7/26H04N19/86
Inventor 罗忠祥汪承炜
Owner CHIPNUTS TECH INC
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