Blind source separation using mixtures scatter plot properties

Authors:
D. Carasso;E. Vizel;Y. Y. Zeevi
Affiliations:
Electrical Engineering Department, Technion - Israel Institute of Technology, Haifa, Israel;Electrical Engineering Department, Technion - Israel Institute of Technology, Haifa, Israel;Electrical Engineering Department, Technion - Israel Institute of Technology, Haifa, Israel
Venue:
DSP'09 Proceedings of the 16th international conference on Digital Signal Processing
Year:
2009

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Abstract

The scatter plot of two image mixtures, generated by mixing two positive sources, is bounded by a parallelogram, the orientations of which are defined by the two ratios of the four mixing coefficients. The existence of inter-source dependencies creates a distribution bounded by a different rectilinear shape, bounded by the original parallelogram. Based on this observations a robust graphical method for Blind Source Separation (BSS) is presented with reference to the scatter plot of the mixtures. The error analysis in presence of inter source dependencies is presented.