| Author | Dinusha, R. G. |
| Call Number | AIT Thesis no.ICT-08-10 |
| Subject(s) | Coding theory
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Information and Communications Technologies, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ICT-08-10 |
| Abstract | Slepian- Wolf (1973) and Wyner-Ziv (1976) laid the basic foundation of Dis¬tributed Video Coding (DVC) around 1970's. Only handful of researchers were in¬terested in their work at that time. However this gained its popularity within the recent past with the emergence of new applications where the main requirement is low complexity encoding. This is essential for the applications, which need low cost, and low power encoding without losing the compression efficiency, these include sen¬sor networks, video conferencing, mobile document scanners, wireless video, low power surveillance cameras, wireless capsule endoscopy for medical applications, and etc. This thesis work consists of several portions; the first section proposes a new DVC model which incorporates key frame transmissions into the current DVC model so that key frame and VVZ frame transmissions can be addressed as a single DVC model. The second section addresses the DVC encoder in Discrete Cosine Transform (DCT) domain where the frames are more efficiently encoded achieving a higher compression ratio comparable with the conventional codes. Both of these models fulfill the basic requirement of DVC by employing comparably low complexity encoders where the temporal and spatial correlations of the video stream are exploited at the decoder. At the final section the performance of the transform domain DVC is further enhanced by incorporating it with Run-Length Amplitude/Variable length coder, 81 noise estimation by the motion compensation at the receiver and Nonbinary LDPC codes. The performance of these DVC models are analyzed over AWGN and Nakagami¬m wireless fading channels for different Group of Picture (GOP) values, thus bringing DVC one step closer to the practical implementation |
| Year | 2008 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ICT-08-10 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Information and Communication Technology (ICT) |
| Chairperson(s) | Rajatheva, R.M.A.P; |
| Examination Committee(s) | Teerapat Sanguankotchakorn;Poompat Saengudomlert; |
| Scholarship Donor(s) | Finland;Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |