DSP-based MPEG-4 Video Encoder

Present numerical ages, the video MPEG-4 compression standard with low-bitrate,high compressibility to satisfy numeral multi-media information to deliver nicely. It isapplied in numerical television, visible telephone, real-time multimedia supervision,motionmultimedia correspondence, the network video server etc. mutual multi-media systemextensively.In this thesis, Firstly, an introduction to video compression principal, methods andcentral international video coding standards is done, analyzing the core techniques ofMPEG-4 and proposing a scheme of MPEG-4 SP encoder, giving a flowchart, and in theVC++ environment MPEG-4 SP video compress function with the C language procedureis carried out,adopting standard testing sequence coding and decoding as a verification,afterwards,studying DCT/Quantation/Motion Estimation/MotionCompensation algorithmin detail; Secondly,combine the instruction structure and the hardware characteristics ofthe C6711, do a system hardware project frame diagram on this foundation, andtransplant this code successfully CCS, carry on software to imitate really, verify theusefulness of the coder. The complement explained parts of algorithm of excellent turn aproject, and aim at the algorithm transplantation with imitated the problem in the trueprocess to carry on elucidation to reach agreement definitely; Thirdly, Motion Estimationrelatively consumed time in the algorithm, then to study further various search algorithm,and do a kind of better than diamond search algorithm, it is a high-efficieny seach algori-thm,emluating and compareing its function in the MATLAB.In the end, the summarization about what has learned and arisen problems is given;meanwhile, the future research point and development about video coding is prospected.