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Optical Engineering

Friendly progressive visual secret sharing using generalized random grids
Author(s): Shang Kuan Chen
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Paper Abstract

A random grid is a two-dimensional binary array in which entries, 0 or 1, are determined in 50% to 50%. A generalized random grid is also a 2-D binary array in which entries are determined but not necessarily 50% to 50%. Using generalized random grids for visual secret sharing, friendly meaningful transparencies, also called shares, can be generated, and the size of each share is the same with the secret image size. In the decoding phase, stacking at least two friendly meaningful shares together, the content of the secret image can be revealed without any computation, and the more shares stacked, the clearer the result. The proposed method can also be implemented for gray and color images.

Paper Details

Date Published: 1 November 2009
PDF: 7 pages
Opt. Eng. 48(11) 117001 doi: 10.1117/1.3262345
Published in: Optical Engineering Volume 48, Issue 11
Show Author Affiliations
Shang Kuan Chen, Yuanpei Univ. (Taiwan)

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