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H.264 coding algorithm and FPGA-based design

Author: ZhuSongChao
Tutor: ZhangZuo
School: Northwestern Polytechnical University
Course: Communication and Information System
Keywords: H.264/AVC Intraframe prediction Transform and quantization FPGA Video encoder chip
CLC: TN919.81
Type: Master's thesis
Year: 2006
Downloads: 583
Quote: 9
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Abstract


H.264/AVC is a new generation video coding standard jointly developed by the International Telecommunication Union ( ITU ) and the International Organization for Standardization ( ISO ) . Firstly, brief introduction to the the H.264/AVC coding strategy and improve the coding efficiency of the technical characteristics , and then focus on one of the two key technologies: the intra prediction and transform and quantization . Standard , H.264/AVC , if the prediction block using the intra prediction mode for the luminance component , a 4 × 4 block 9, the prediction mode , the 16 × 16 macro block has 4 kinds of prediction modes ; chrominance component , there are 4 kinds of prediction modes , these prediction mode greatly improve the prediction accuracy of the intra-frame prediction , and out of the stream . The same as the previous image encoding standard , H.264/AVC is based transform coding of video standards , the type of the H.264/AVC standard using a 4 × 4 block -based integer transform , and other video coding standards based compared to the 8 × 8 block of DCT transform , the transform simply use a 16-bit adder and a shift operation can be achieved without the use of multiplication , and greatly reduces the computational complexity , and avoid the inverse transform process in error . Firstly, systematic study of the intra prediction algorithm of prediction mode and mode decision algorithm and compare a variety of prediction mode predictive coding performance test JM platform ; followed H.264/AVC integer transform algorithm and the quantization process carried out a systematic derivation and demonstration . On the basis of theoretical analysis paper proposes a FPGA-based I-frame encoder design , the program uses the basic modules in the H.264/AVC encoder , including intra prediction , transform quantization and entropy coding ; paper first analyzes the system architecture design of the program , then the encoder intra prediction , transform and quantization of key technologies such design were discussed in detail , and finally verify the design on an FPGA platform and verification results ; verification results show that the program can achieve Profile encoding H.264/AVCBaseline , fewer hardware resources , high -definition encoded image . The program has been designed for H.264/AVC codec chip development done a very good study and exploration work , have a good reference value .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication > Image coding
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