  The recently introduced approach for Encrypted Image Folding is generalized
to make it Self Contained. The goal is achieved by enlarging the folded image
so as to embed all the necessary information for the image recovery. The need
for extra size is somewhat compensated by considering a transformation with
higher folding capacity. Numerical examples show that the size of the resulting
cipher image may be significantly smaller than the plain text one. The
implementation of the approach is further extended to deal also with color
images.
