Transformation & quantification and inverse quantization & inverse transformation processing method and system for H.264 coding

Abstract

The invention provides a transformation & quantification and inverse quantization & inverse transformation processing method and system for H.264 coding. The system comprises an arbitration module, a transformation and quantification module, an inverse quantization and inverse transformation module, and a post processing module. The transformation and quantification module is connected to the arbitration module and the inverse quantization and inverse transformation module. The inverse quantization and inverse transformation module is connected to the post processing module. The transformation and quantification module and the inverse quantization and inverse transformation module each include three sub-modules for parallel processing. The invention also provides the transformation & quantification and inverse quantization & inverse transformation processing method for H.264 coding. Through three sets of transformation & quantification and inverse quantization & inverse transformation mechanisms for parallel processing, the calculating processing capability of an encoder is improved, and complexities of a data feedback link and a sequential link are minimized.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a method and system for transform quantization, inverse quantization and inverse transform processing of H.264 coding. Background technique [0002] The H.264 standard is a high-performance digital video codec standard proposed by the Joint Video Team (JVT, JointVideoTeam). Its biggest advantage lies in its high compression rate. Under the same image quality, the H.264 compression rate can It is twice as high as MPEG-4. The reason why it can have such a high compression ratio is mainly because H.264 contains a series of new features, such as multi-frame reference, variable block size motion compensation, and high-precision sub-pixel Motion compensation, deblocking filter, etc., but the traditional H.264 encoder still has problems such as low throughput rate and slow calculation speed in design. Since only 4×4 block processing is considered, it cannot be compatible wi...

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Problems solved by technology

[0002] The H.264 standard is a high-performance digital video codec standard proposed by the Joint Video Team (JVT, JointVideoTeam). Its biggest advantage lies in its high compression rate. Under the same image quality, the H.264 compression rate can 2 times of MPEG-4, the reason why it can have such a high compression ratio is mainly because H.264 contains a series of new features, such as multi-frame reference, variable block size motion compensation, and high-precision sub-pixel Motion compensation, deblocking filter, etc., but the traditional H.264 encoder still has problems such as low throughput rate and slow calculation speed in design. Since only 4×4 block processing is considered, it is not compatible with 8×8 Transformation, and the entire process including DCT transformation, quantization and image reconstruction cannot be realized as a whole, and there is a waste of resources

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