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|Title:||AN EFFICIENT CODING METHOD FOR TELECONFERENCING AND MEDICAL IMAGE SEQUENCES|
|Keywords:||ELECTRONICS AND COMPUTER ENGINEERING;ELECTRONICS AND COMPUTER ENGINEERING;ELECTRONICS AND COMPUTER ENGINEERING;ELECTRONICS AND COMPUTER ENGINEERING|
|Abstract:||The high bit rates that result from the various types of digital video make their transmission and processing very difficult. It either requires high bandwidth for high quality video transmission, or the transmitted video be blurred at low bit rate. Processing high bit rate video requires high processing computing machine. Although significant advancement in storage, transmission, and processor technology has been achieved in recent years, it is primarily the 'reduction of the amount of data that needs to be stored, transmitted, and processed that has made widespread use of digital video a possibility. Thus, efficient compression technology is required. An efficient video coding based on Three-Dimensional vector quantization system has been proposed with the following contribution. First, the proposed system use a pyramidal code book based model instead of conventional single level code book. According to this model, if a specific motion cannot be matched accurately in higher level code book according to coarse partitioning of the frame, a more refined code book description is used. Proposed system also use adaptive vector quantization algorithm to train code book for optimal performance with varying time. Second, the proposed system use a potential based codebook post processing technique which enables the vector quantizer to possess higher correlation preservation property. The proposed post-processing technique leads to a much higher inter index correlation. Third, based on the special pattern of the codebook imposed by post-processing technique, a fast search algorithm is proposed. The algorithm not only accelerates the vector quantization processing, but also results in better rate-distortion performance|
|Research Supervisor/ Guide:||Joshi, R. C.|
|Appears in Collections:||MASTERS' DISSERTATIONS (E & C)|
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