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Weighted modulated secret image sharing method

[+] Author Affiliations
Chien-Chang Chen

Hsuan Chuang University, Department of Information Management, Hsinchu 300, Taiwan

Chaur-Chin Chen

National Tsing Hua University, Department of Computer Science, Hsinchu 300, Taiwan

Yun-Cheng Lin

Hsuan Chuang University, Department of Information Management, Hsinchu 300, Taiwan

J. Electron. Imaging. 18(4), 043011 (December 03, 2009). doi:10.1117/1.3268362
History: Received February 17, 2009; Revised October 01, 2009; Accepted October 12, 2009; Published December 03, 2009; Online December 03, 2009
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We present a novel hybrid method that includes a modulated scheme for reducing the distortion of the reconstructed image and a two-layered structure for grouping participants with different weights in a secret image sharing problem. Conventional secret image sharing methods suffer from truncation distortion, which is the difference between a pixel value and its truncated result. We first present a histogram modulation scheme to modulate the truncated pixels to prevent the truncation distortion. A two-layer secret image sharing scheme groups the participants in the first layer and weights them differently in the second layer. The proposed modulated secret image sharing method merges these two schemes. Experimental results reveal that the proposed method efficiently reduces the truncation distortion and groups the participants with different possessing weights.

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Citation

Chien-Chang Chen ; Chaur-Chin Chen and Yun-Cheng Lin
"Weighted modulated secret image sharing method", J. Electron. Imaging. 18(4), 043011 (December 03, 2009). ; http://dx.doi.org/10.1117/1.3268362


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