A Partial Image Cryptosystem Based on Discrete Cosine Transform and Arnold Transform.
Kshiramani NaikArup Kumar PalPublished in: RAIT (2014)
Keyphrases
- discrete cosine transform
- discrete fourier transform
- image blocks
- blocking artifacts
- image data
- jpeg images
- coded images
- image compression
- transform domain
- image segmentation
- multiscale
- hartley transform
- projections onto convex sets
- pixel values
- projection onto convex sets
- post processing
- fast fourier transform
- dct coefficients
- lapped transforms
- fourier transform
- filter bank
- similarity measure
- compressed images