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Hybrid Video Coding at High Bit-Rates
Ron Gatenio, Roy Shchory
Supervised by Yehuda Dar
In this project we explore the prevalent hybrid video-coding concept that joins transform-coding and motion-compensation. Specifically, we study the necessity of transforming the motion-compensation prediction residuals for their coding at high bit-rates.
Our research relies on empirical statistics from a simplified motion-compensation procedure implemented in Matlab, and also from the reference software of the state-of-the-art HEVC standard. Our results show that the correlation among the motion-compensation residuals gets lower as the bit-rate increases, supporting the marginal use of transform coding at high bit-rates (i.e., the residuals are directly quantized).
We also developed a research tool that provides data from intermediate stages of the HEVC. The data mainly include motion-compensation residuals, motion vector data, block and frame types, and bit-budget of components. It is formatted in a structure suitable for easy usage in Matlab for future research projects.
Please, see project report.
Please, see final presentation.