SIFT Saliency Analysis for Matching Repetitive Structures

Figure 3

The area coverage and the spatial distribution of seed features. Circle and × marks indicate seed features and repetitive features, respectively. The areas bounded by bold and thin solid lines represent and , respectively. The triangle region with dotted lines illustrates a ROI for multiple features.

(a) Ideal area coverage of the seed features

(b) Area coverage smaller than 1.0

(c) The same area coverage but different spatial distribution with (b)