Fig. 12From: Combining multi-scale composite windows with hierarchical smoothing strategy for fingerprint orientation field computationThe comparison of OF construction and smoothing II: a original fingerprint image, OF estimated b by the enhanced gradient based method [23], c by the gradient based voting method [22], d by the proposed weighted multi-scale composite window (WMCW), e by EG + hierarchical smoothing, f by GV + hierarchical smoothing, g by the proposed WMCW + hierarchical smoothingBack to article page