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Definition of "block truncation coding (BTC)" |
technique whereby an image is segmented into n × n nonoverlaping blocks of pixels, and a two-level quantizer is designed for each block. Encoding is essentially a local binarization process consisting of a n × n bit map indicating the reconstruction level associated with each pixel. Decoding is a simple process of associating the reconstructed value at each pixel as per the bit map. |
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