Compression-unimpaired batch-image encryption combining vector quantization and index compression.
Tzungher ChenChang-Sian WuPublished in: Inf. Sci. (2010)
Keyphrases
- vector quantization
- image compression
- image encryption
- vector quantizer
- compression ratio
- compression algorithm
- authentication scheme
- codebook design
- wavelet transform
- transform coding
- reconstructed image
- image processing
- reduced complexity
- distortion measure
- security analysis
- wireless communication
- discrete cosine transform
- subband
- lossless compression
- bit allocation
- image coding
- low bit rate
- secret key
- frequency domain
- wireless networks
- image reconstruction
- progressive transmission
- smart card
- finite state vector quantization