Ç. Dikici,R. Guermazi, K. Idrissi, A. Baskurt

• Ç. Dikici,R. Guermazi, K. Idrissi, A.Baskurt

Distributed Coding

• Distributed Coding

• System Architecture

• Encoding and Decoding of Images

• Experiments

• Conclusion

• Coding of multiple sources which can not communicate at the encoder

• Ultra-low encoding complexity
• Reduce power consumption

• Ex: Image and Video coding, sensor networks

Slepian&Wolf[1973], Wyner&Ziv[1976]

• Slepian&Wolf[1973], Wyner&Ziv[1976]

• Video Coding: Ramchandran et al.[99], Girod et al.[99]

• Image coding: ?

• Contribution

• A new still image coding based on Distributed Source Coding using the wavelet domain

Proposition of DSC based image coding scheme

• Proposition of DSC based image coding scheme

• Low-pass wavelet coefficients and modulo binning of the image are encoded parallel, decoded jointly
• Edge features of the image recovered

• Very first rate&distortion results are not satisfactory

• Reduction of the computational complexity of the coder

• LDPC or Turbo Codes for coset creation

• Definition of the side information

• A map of ROI
• Global and local features (color, texture, shape, contour,..)