HP Labs Technical Reports

Perceptually Lossy Compression of Documents

Beretta, Giordano; Konstantinides, Konstantines; Bhaskaran, Vasudev; Natarajan, Balas

HPL-97-23

Keyword(s): facsimile; document compression; image transmission; reading performance; JPEG; CIELAB

Abstract: We present a method for designing JPEG quantization tables that are tailored for color facsimile transmission. The proposed technique combines results on visual acuity and peak contrast sensitivity of the human visual system with results from rate distortion theory. The new tables yield higher compression ratios for a given visual quality, resulting in shorter transmission times.

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