Embedded color image coding with context adaptive wavelet difference reduction
- Resource Type
- Conference
- Authors
- Lamsrichan, Poonlap; Sanguankotchakorn, Teerapat
- Source
- 2009 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Intelligent Signal Processing and Communication Systems, 2009. ISPACS 2009. International Symposium on. :347-350 Dec, 2009
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Signal Processing and Analysis
Color
Image coding
Wavelet transforms
Arithmetic
Streaming media
Quantization
Adaptive signal processing
Context
PSNR
Transform coding
Color image coding
wavelet difference reduction
embedded coding
context adaptive
- Language
A new color image coding technique is proposed in this paper. The technique is based on the efficient grey-scaled wavelet-based image coding, the context adaptive wavelet difference reduction - CAWDR. The coder exploits not only compactness and self-similarities of wavelet transform in each color component, but also the dependency between the color components. The context adaptive arithmetic coder is implemented to the encoded bit stream. The significant coefficient quantizations for all color components are performed before the refinement pass in each bit-plane. This single bit stream of encoded image has embedded property and exact rate control without explicit information. The performance comparison is also presented in the paper. The proposed coder typically has 0.3 – 1 dB higher average PSNR than that of JPEG2000.