Title :
A perceptually-based motion compensated video encoder
Author_Institution :
Center for Comput. Aids for Ind. Productivity, Rutgers Univ., Piscataway, NJ, USA
fDate :
30 Aug-3 Sep 1992
Abstract :
A perceptually based video encoder for monochrome image sequences is presented. It incorporates characteristics of the human visual system to detect, track, and encode image blocks (of 8×8 pixels) perceived to be in apparent motion. The Weber relation in the spatio-temporal domain is used for motion detection. A decimation-interpolation scheme is developed to produce good quality video at very low-bit-rates. An efficient technique based on the discrete cosine transform and vector quantization is developed to encode image blocks which have changed beyond a perceptual threshold. The new encoder is demonstrated to yield competitive quality video at low-bit-rates
Keywords :
discrete cosine transforms; image coding; image sequences; vector quantisation; video signals; 64 pixels; 64 to 128 kbit/s; 8 pixels; Weber relation; apparent motion; decimation-interpolation scheme; discrete cosine transform; image coding; monochrome image sequences; motion detection; perceptually-based motion compensated video encoder; spatio-temporal domain; vector quantization; very low-bit-rates; Computed tomography; Computer industry; Discrete cosine transforms; Humans; Image coding; Image sequences; Image storage; Motion detection; Productivity; Visual system;
Conference_Titel :
Pattern Recognition, 1992. Vol.III. Conference C: Image, Speech and Signal Analysis, Proceedings., 11th IAPR International Conference on
Conference_Location :
The Hague
Print_ISBN :
0-8186-2920-7
DOI :
10.1109/ICPR.1992.201919
