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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4366

Title: Contextual algorithm for color quantization
Authors: Yu, M. P.
Lo, K. C.
Subjects: Image coding
Image colour analysis
Quantisation (signal)
Issue Date: Jul-2003
Publisher: SPIE and IS&T
Citation: Journal of electronic imaging, July 2003, v. 12, no. 3, p. 442-447.
Abstract: We propose a heuristic approach to color quantize images with contextual information taken into consideration. The idea is to locate the regions of an image having the greatest need for colors, and allocate more quantization levels to them. We achieve this by scanning the elements of the input image in a way determined by their local intensity and selecting the color representatives that comprise the color map according to their local popularity. The overall performance of the color quantization algorithm is evaluated on a representative set of artificial and real images. The experimental results indicate good performance of our proposed algorithm with the capability to focus on the regions of an image having important color information.
Description: DOI: 10.1117/1.1586285
Rights: Copyright 2003 Society of Photo-Optical Instrumentation Engineers and IS&T. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/4366
ISSN: 1017-9909
Appears in Collections:EIE Journal/Magazine Articles

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