Colour quantization by three-dimensional frequency diffusion

Authors:
K. C. Lo;Y. H. Chan;M. P. Yu
Affiliations:
Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Venue:
Pattern Recognition Letters
Year:
2003

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Abstract

This paper presents a novel algorithm for colour quantization based on frequency diffusion in the histogram of an image. By manipulating a diffusion filter, a cross-space operation is achieved, obtaining quantization effect in a colour space without transforming the image to that space. Results show that the algorithm is effective.