... for mixture of three512 × 512 image signals, where sj and x1jstand for the j-thoriginal images and mixed images, respectively, and y1the image extracted by the extraction processing unit ... sensor signals bya bank of sub-band filters, (b) typical frequency characteristics of bandpass filters. 1524.6 Comparison of performance of various algorithms as afunction of the signal to noise ... simulation results for mixture of threenon-i.i.d. signals and two i.i.d. random sequences, where sj,x1j, and yjstand for the j-th source signals, mixed signals, and extracted signals, respectively....