Block Pyramid Based Adaptive Quantization Watermarking for Multimodal Biometric Authentication.
Bin MaChunLei LiYunhong WangZhaoxiang ZhangYiding WangPublished in: ICPR (2010)
Keyphrases
- biometric authentication
- adaptive quantization
- low bit rate
- shape coding
- rate distortion
- coded images
- user authentication
- biometric systems
- multiresolution
- image compression
- blocking artifacts
- subband
- bit rate
- input image
- multiscale
- subband coding
- watermarking algorithm
- video compression
- watermarking scheme
- dct coefficients
- coarse to fine
- sparse representation
- post processing
- image quality
- transform coefficients
- visual quality
- video coding
- similarity measure