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1 November 1991 High-speed two-dimensional pyramid image coding method and its implementation
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A non-separable pyramid scheme is developed for coding of images to achieve a high compression rate. The method allows a very efficient algorithmic implementation, using only 2 additions and a shift (division by 2) for each image pixel during coding or decoding. Since the operations needed are mostly independent of each other and have a high degree of regularity, it is also possible to design VLSI hardware to perform this operation using an array of simple basic cells. At the same time high coding efficiency results: for a typical 513x513 image we can achieve a peak signal-to-noise ratio of 30 dB with an encoding whose entropy is 0.133 bits per pixel. This information can be encoded using a method as simple as PCM, while still requiring only 0.385 bits per pixel, giving a very simple overall coding system.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Haralambos Sahinoglou and Sergio D. Cabrera "High-speed two-dimensional pyramid image coding method and its implementation", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991);

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