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.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.