1 May 1994 Space domain coding method, suitable for coding motion-compensated difference images
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Abstract
For a long time, most codes for moving images have been of the hybrid DCT type. However, the use of DCT as a method to code notion compensated difference images is largely based on tradition rather than proof. DCT proved to be nearly optimal for a certain kind of statistics that matches the real statistics of images rather well. But motion compensated difference images do not fail under this category, as their local spatial correlation is much lower. Therefore, there is no solid reason to use DCT for coding them, other than the fact that DCT is well known and that hardware for it is readily available. In this paper, we propose a straightforward spatial domain way of coding images, here called optimal level allocation. It proves to be suitable for both intra and inter images.
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Albert A. Deknuydt, Stefaan Desmet, Luc Van Eycken, Andre J. Oosterlinck, "Space domain coding method, suitable for coding motion-compensated difference images", Proc. SPIE 2186, Image and Video Compression, (1 May 1994); doi: 10.1117/12.173922; https://doi.org/10.1117/12.173922
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