High-performance macroblock coding implementation method

Abstract

The invention discloses a high-performance macroblock coding implementation method, which mainly solves the problems of low processing speed, complexity in implementation, and a large number of occupied resources of the conventional method for implementing macroblock coding based on hardware. The method is implemented by the following steps of: (1) caching initial data and inter prediction data; (2) performing two-path parallel intra prediction on the current macroblock; (3), selecting the optimal mode of the intra prediction and cost thereof according to the intra prediction result; (4), acquiring the optimal mode of the inter prediction and cost thereof; (5), comparing the cost of the optimal modes of the inter prediction and the intra prediction to obtain the optimal prediction modes of the current macroblock; and (6) quantizing discrete cosine transformation (DCT) results of the optimal prediction modes and performing entropy coding and reestablishing respectively and depositing and outputting the reestablished results simultaneously. The method has the advantages that coding speed is high, a field programmable gate array (FPGA) is easy to implement and resources are fully reused, and can be used for a video coding system, particularly the video coding system with high resolution.

Description

Technical field [0001] The present invention relates to the field of video image processing, and in particular to a method for implementing video coding, which can be used for video compression processing of an H.264 video coding system. Background technique [0002] The future society is an information society. Digital information, especially digitized video and audio information, has a series of advantages, such as intuitiveness, accuracy, efficiency, and versatility, but the amount of information is too large for the storage of information And transmission caused great difficulties and became one of the bottlenecks that hindered humans from obtaining and using effective information. In order for video information to be effectively used, the problems of encoding compression rate and decoding image quality must be solved. Therefore, research and development of new and effective multimedia data compression coding methods, storing and transmitting these data in a compressed form ...

AI Technical Summary

Problems solved by technology

For macroblock coding, many fast algorithms based on mode selection have been proposed to improve the processing speed of the system. The main ideas of these algorithms are: based on boundary detection, classification of prediction modes, application of histograms and early termination, etc., relatively Compared with the standard rate-distortion algorithm, the calculation amount of these algorithms has been greatly reduced, but they are all implemented based on software, and have a certain degree of impact on image quality. When implemented in hardware, these algorithms are too complicated and The parallel processing capability of the hardware and the multiplexing of resources are not fully considered, and the real-time requirements cannot be met.

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