Title :
A technique for lossy compression of error-diffused halftones
Author :
Cheung, Sin-Ming ; Chan, Yuk-Hee
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ.
Abstract :
In this paper, a new technique for lossy compression of halftone images is proposed based on the vector quantization technique. A conventional vector quantization encoder is modified such that it embeds a block-based error diffusion process and takes a HVS model into account during the compression. This modification significantly improves the visual performance of encoded images while the compression ratio achieved is identical to that of vector quantization
Keywords :
data encapsulation; image coding; vector quantisation; HVS model; block-based error diffusion process; compression ratio; embedding; encoded images; error-diffused halftones; halftone images; lossy compression; vector quantization encoder; visual performance; Convolution; Frequency; Image coding; Image generation; Image reconstruction; Noise reduction; Noise shaping; Signal processing; Spatial resolution; Vector quantization;
Conference_Titel :
Multimedia and Expo, 2004. ICME '04. 2004 IEEE International Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7803-8603-5
DOI :
10.1109/ICME.2004.1394397
