1 November 1991 Motion-compensated subsampling of HDTV
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For an economical introduction of HDTV a substantial datareduction is necessary, while maintaining the high image quality. To this end Sub-Nyquist techniques can be used (MUSE, HD-MAC) for stationary parts of the image, spreading the sampling of one complete frame over several frames and combining these different frames at the receiver. Without special precautions Sub-Nyquist sampling is not possible for moving areas of the image, in this paper a new algorithm will be described for the subsampling of moving parts of a video sequence. The advantage of this new method is that the full spatial resolution can be preserved, while also maintaining the full temporal resolution. To prevent aliasing at certain velocities ( critical velocities ), the image is divided into a high-pass and a low-pass part prior to subsampling. At the receiver a motion compensated interpolation filter is used to reconstruct the original image.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ricardo A. F. Belfor, Ricardo A. F. Belfor, Reginald L. Lagendijk, Reginald L. Lagendijk, Jan Biemond, Jan Biemond, "Motion-compensated subsampling of HDTV", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); doi: 10.1117/12.50226; https://doi.org/10.1117/12.50226


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