Novel algorithm to reduce the complexity of quarter-pixel motion estimation

P. S.S.B.K. Gupta; Ramkishor Korada

doi:10.1117/12.532336

18 January 2004 Novel algorithm to reduce the complexity of quarter-pixel motion estimation

P. S.S.B.K. Gupta, Ramkishor Korada

Proceedings Volume 5308, Visual Communications and Image Processing 2004; (2004) https://doi.org/10.1117/12.532336
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

Quarter pixel precision motion compensation became a common tool in advanced video compression standards such as MPEG-4 Advanced Simple Profile (ASP), H.264 because of its ability to represent motion more accurately than half pixel precision. MPEG-4 ASP uses 8-tap symmetric filter in finding interpolated sample values at half pixel resolution in quarter pixel precision motion compensation. This new tool increases the computational complexity of the fractional pixel motion estimation on the encoder side compared to the integer pixel motion estimation, in terms of computation of interpolated sample values as well as number of fractional pixel search points. This paper presents a way to reduce the complexity of quarter pixel motion estimation by reducing the filter tap length. Reduction in computation complexity and variation in PSNR values with different filters are presented.

Citation Download Citation

P. S.S.B.K. Gupta and Ramkishor Korada "Novel algorithm to reduce the complexity of quarter-pixel motion estimation", Proc. SPIE 5308, Visual Communications and Image Processing 2004, (18 January 2004); https://doi.org/10.1117/12.532336

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