High-quality subband image coding of TV signals at 5 Mbit/s with motion compensation interpolation and visually optimized scalar quantization

Jose Hanen; Dominique Barba

doi:10.1117/12.157907

22 October 1993 High-quality subband image coding of TV signals at 5 Mbit/s with motion compensation interpolation and visually optimized scalar quantization

Jose Hanen, Dominique Barba

Author Affiliations +

Proceedings Volume 2094, Visual Communications and Image Processing '93; (1993) https://doi.org/10.1117/12.157907
Event: Visual Communications and Image Processing '93, 1993, Cambridge, MA, United States

Abstract

To obtain a high level of quality when coding a TV color video signal with a high compression rate, the spatial subband decomposition and the differential coding with motion compensation and psychovisual quantization have been previously successfully used for coding a color television sequence at a rate of 10 Mbit/s. However these techniques are not sufficiently efficient to achieve the objective of a rate of 5 Mbit/s without any significant reduction of the spatial resolution and of the quantification quality. We present a subband coding method which allows the user to simultaneously maintain the full spatial resolution and the quantization quality. This method is based on a frame skipping algorithm; it primarily uses motion compensation techniques for the interpolation of non coded frames and the prediction of coded frames and secondarily a spatial subband decomposition of the prediction error before a coding step which uses a set of visually optimized scalar quantizers -- the quantization in the spatial frequency domain is adapted to the visual perception by incorporating some important aspects of the human visual system (frequency dependence and masking).

Citation Download Citation

Jose Hanen and Dominique Barba "High-quality subband image coding of TV signals at 5 Mbit/s with motion compensation interpolation and visually optimized scalar quantization", Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); https://doi.org/10.1117/12.157907

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