Yet Rapid ICA: Applications to un-indexed image-to-image retrieval

A faster algorithm of ICA is devised. This method utilizes multi-step past information with the existing fixed-point method. The use of past information comes from the idea of surrogate optimization. The speed and implemented software are checked for both simulated and read data. The presented ICA, named Rapid ICA, is applied to image-to-image retrieval without indices. Images judged to be similar reflected user's opinion well.