Lossless image cryptography algorithm based on discrete cosine transform.

Sara Tedmori Nijad Al-Najdawi

Published in: Int. Arab J. Inf. Technol. (2012)

Keyphrases

discrete cosine transform
similarity measure
test images
discrete fourier transform
image data
image compression
multiscale
computational complexity
image blocks
gray level images
compressed images
image interpolation
projection onto convex sets
multiresolution
denoising