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Implementation of XVID Encoding Technology on Platform of DM642

Author: YeHaiTao
Tutor: YanGuoPing
School: Huazhong University of Science and Technology
Course: Circuits and Systems
Keywords: DM642 MPEG-4 XVID Transplant Optimization
CLC: TN919.81
Type: Master's thesis
Year: 2007
Downloads: 96
Quote: 1
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Abstract


With the increasingly wide application of digital video compression technology , high - quality video compression algorithm practical demand more and more urgent . Ensure a certain quality of the premise , it is desirable to the least number of bits of said video images, in order to reduce the bandwidth requirements when a video image transmission . Currently using a dedicated or general-purpose DSP flexible way , fully able to meet the demand for special video formats and processing , has good scalability , scalability and maintainability . XVID encoding technology is based on an efficient encoding of MPEG-4 video standard , the use of mature algorithm , the structure of the program is clear and simple, and has good portability , the work of this article is to expand on the basis of research XVID code 's . This study is the use of the TMS320DM642 DSP hardware platform , porting and optimization of MPEG-4 simple video encoder 's basic real-time requirements . This paper analyzes the core algorithm and procedural framework XVID source transformation algorithm and program framework , combined with the hardware features of the DM642 module DCT , quantization module , matching module is optimized and linear assembly language compare consuming module rewrite . Through the standard sequence , the overall performance of the encoder , optimize performance , rate control performance test , the last topic summary and outlook .

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