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Improving Image Compression Saturday, February 07, 2009 - Anuradha Menon Home >> Headlines >> Computer Technology
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Many image processing applications, including JPEG2000 and fingerprint compression, use wavelets. By redistributing an image's energy into a set of lower-resolution trend subimages, discrete wavelet transforms (DWTs) can significantly reduce the number of bits required for representation. Quantization (approximating a signal with a smaller number of bits) and thresholding (setting all but the largest transform values to zero) may achieve additional compression. (source: spie.org)
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