Multiple-image hiding by information prechoosing.
The information inevitably lost in multiple-image hiding is discarded in advance by the operation of prechoosing information before the hiding process; thus both fidelity and multiplexing capacity can be improved significantly. Various characters of each image provide a great many possibilities for information prechoosing. The ideal low-pass filter presented with the matched encoding and hiding procedure may be one of the simplest examples of information prechoosing for generally used images. Computer simulations demonstrate its good performance, and the security is analyzed as well.
Shi
Yishi
Y
College of Physical Sciences, Graduate University of the Chinese Academy of Sciences, Beijing 100049, China. optsys@gmail.com
Situ
Guohai
G
Zhang
Jingjuan
J