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Progressive transmission of color-mapped images

[+] Author Affiliations
Wai-Yin Ng

The Chinese University of Hong Kong, Department of Information Engineering, Shatin, Hong Kong, China

Tsz-Yam Lau

The Chinese University of Hong Kong, Department of Information Engineering, Shatin, Hong Kong, China

Lap-Ming Kwong

The Chinese University of Hong Kong, Department of Information Engineering, Shatin, Hong Kong, China

J. Electron. Imaging. 14(3), 033013 (July 15, 2005). doi:10.1117/1.1994874
History: Received March 08, 2004; Revised February 03, 2005; Accepted March 11, 2005; Published July 15, 2005; Online July 15, 2005
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Coded as conventional color-map addresses, a color-mapped image can be decoded only when a full color map address is available. We present the first known scheme that adds progression capability in spatial resolution as well as color resolution, enabling more flexible progression of color-mapped images. During coding, approximate pixel colors are keyed with truncated versions of the original color-map addresses. Subsequently, the coded image is transmitted by interleaving the per pixel address bit order for color resolution refinement, and a spatial pixel order for spatial resolution refinement. The interleaving is subject to user control through spatial-color progression rate control (SCPRC), a novel means for biasing the progression to accelerate either spatial resolution or color resolution for more informative early views of the image being transmitted.

© 2005 SPIE and IS&T

Citation

Wai-Yin Ng ; Tsz-Yam Lau and Lap-Ming Kwong
"Progressive transmission of color-mapped images", J. Electron. Imaging. 14(3), 033013 (July 15, 2005). ; http://dx.doi.org/10.1117/1.1994874


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