Multi-image compression-encryption scheme based on quaternion discrete fractional Hartley transform and improved pixel adaptive diffusion.
Huo-Sheng YeNan-Run ZhouLi-Hua GongPublished in: Signal Process. (2020)
Keyphrases
- hartley transform
- image compression
- discrete cosine transform
- encryption scheme
- fourier transform
- lossless compression
- wavelet transform
- standard model
- public key
- compression ratio
- compression algorithm
- subband
- frequency domain
- data sharing
- fast fourier transform
- ciphertext
- signal processing
- reconstructed image
- discrete fourier transform
- high quality
- feature extraction
- row column
- multiscale
- pattern recognition
- multiresolution
- image features
- transform domain
- image processing