A VQ-Based Image Steganographic Scheme with High Visual Quality of Images.
Shih-Chieh ShieLong-Tai ChenPublished in: IPCV (2009)
Keyphrases
- visual quality
- higher psnr
- high compression ratio
- image quality
- image compression
- reconstructed image
- compressed images
- secret image
- decoded image
- enhanced image
- contrast enhancement
- image data
- jpeg compressed images
- input image
- perceptual quality
- pixel values
- bit rate
- secret data
- jpeg images
- embedding capacity
- human visual system
- high frequency
- peak signal to noise ratio
- image fidelity
- cover image
- compression rate
- compression ratio
- blocking effect
- image features
- block boundaries
- image retrieval
- dct domain
- spatial domain
- signal noise ratio
- vector quantization
- error concealment
- test images
- lossless compression
- image classification
- lossy compression
- human observers
- low bit rate
- image blocks
- compression algorithm
- reversible data hiding
- image reconstruction
- visual information
- digital images
- multiscale
- blocking artifacts
- image quality assessment
- data hiding
- discrete cosine transform
- image enhancement
- wavelet transform
- computational complexity
- distortion measure
- multiresolution
- dynamic range compression
- image processing
- color restoration