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A Low-Complexity, Fixed-Rate Compression Scheme for Color Images and Documents
Based on one-dimensional differential pulse code modulation, the coder is multiplication-free, codes each pixel as soon as it is available, and outputs a fixed number of bits for each pixel. Hence, there is no need for any buffering of the input image or coder output bitstream. The compression scheme is visually lossless and yields a modest compression ratio of 3 to 4. Because of its simplicity, it is useful when hardware is limited and coding delays cannot be tolerated.
by Nader Moayeri
 Article 7 - nov98a7.pdf
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