Computation-performance control for DCT-based video coding

TitleComputation-performance control for DCT-based video coding
Publication TypeConference Paper
Year of Publication2000
AuthorsIsmaeil, I., A. Docef, F. Kossentini, and R. Ward
Conference NameAcoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Pagination1911 -1914 vol.4
Keywordscomputation control mechanism, computation performance tradeoffs, computational complexity, DCT-based video coding, discrete cosine transforms, encoding algorithm, H.263 encoding, motion estimation, MPEG-2 encoding, optimum parameter sets, rate distortion theory, reproduction quality, speed-performance tradeoffs, transform coding, video coding

In this paper, we propose a flexible framework for DCT-based video encoding that yields very good computation performance tradeoffs. Each of the encoding components features a set of parameters that can be used to control its computational complexity and performance. A sequence of optimum parameter sets have been designed to obtain encoders with varying degrees of computational complexity. A computation control mechanism is proposed within the encoding framework to allow the encoding algorithm to adapt to the available computational resources. This will allow the encoder to run in real time on machines with different computing power levels, while also achieving the best possible reproduction quality. The proposed framework was applied to MPEG-2 and H.263 encoding. Our experimental results show that excellent speed-performance tradeoffs as well as accurate computation control can be obtained using the proposed method


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