Complexity Reduction Techniques For Long-Term Memory Motion Compensated Prediction Based On Spectral Distortion Analysis

Waqar Zia, Faisal Shafait

In: Proceedings 26th Picture Coding Symposium. Picture Coding Symposium IEEE 4/2006.


Long-term memory motion compensated prediction and up to ¼-pel accurate motion compensation contribute a considerable portion of the compression gain provided by H.264/AVC over its predecessors. This paper investigates the factors contributing to the spectral distortions introduced in the digitized video signal. A quantitative analysis shows that fractional-pel interpolation is the main source of these spectral distortions. Using these results, two techniques are proposed for reducing computational complexity with negligible effects on the quality of the video. Simulation of the proposed techniques show up to 56% complexity reduction compared to the reference scheme without any significant decrease in signal-to-noise ratio.


Zia-LTM-MCP-PCS06.pdf (pdf, 329 KB )

Deutsches Forschungszentrum für Künstliche Intelligenz
German Research Center for Artificial Intelligence