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Study and Implementation of Parallel Algorithm in H.26L Video Encoder

Author: ZhaoYuLin
Tutor: PengQiang
School: Southwest Jiaotong University
Course: Applied Computer Technology
Keywords: H. 26L Video Coding Parallel computing Parallel Video Processing
CLC: TN762
Type: Master's thesis
Year: 2003
Downloads: 136
Quote: 1
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Abstract


Multimedia video coding technology is one of the many computer research areas in the development of the most active areas, and its prospects are very good. In many video coding standard, H.26L is the latest version of the jointly developed by the ITU and ISO / IEC for wireless communication and low bit rate video transmission standard multicast. High compression ratio, the standard applicable to a wide range of advantages. To achieve the desired data compression rate, the encoder of the H.26L uses a lot of new coding algorithm, these algorithms greatly increases the amount of computation of the encoder. In practical applications, the H.26L, in many cases need to be real-time video compression coding, and this to the high requirements of the computing performance of the encoder. In order to achieve real-time encoding and transmission of H.26L single processor is still difficult to meet the requirements. Video coding has a great potential for the development of high-performance parallel computer, the application prospect is very broad. Based on research in this area is increasingly attracted attention, but also with a certain amount of research. In view of the the H.26L the broad applicability and its excellent performance characteristics, research parallel encoding algorithm has a very important significance. H.26L test model TML8.0 experimental platform, detailed analysis and performance testing of its parallel encoder resources, and on this basis to achieve the encoded parallel computing. The thesis contains the following: (1) briefly describes the main features of video coding method and H.26L coding standard and the introduction of new algorithms; parallel computing basic theory and accelerate performance evaluation method. This part of knowledge is the basis of the thesis. (2), starting from the basic principles of the parallel design, combined with the characteristics of H.26L Video Encoder for the test model TML8.0 proposed several possible parallel implementation. And performance analysis and testing them according to the general acceleration performance assessment methods. (3), according to the above proposed several parallel implementation and performance test results, choose one of two methods, with MPI parallel implementation, and the dawn -2000 simulation test results are analyzed and compared. The analysis and test results show, by way of the parallel processing can be largely improved H.26L video coding processing speed, so that the standard can be better suited to a variety of different video applications environment.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Modulation technique and the modulator,demodulator and the demodulator > Encoder
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