A hybrid representation of imbalanced points for two-layer matching

Authors:
Qi Li
Affiliations:
Department of Mathematics and Computer Science, Western Kentucky University
Venue:
ICIAR'11 Proceedings of the 8th international conference on Image analysis and recognition - Volume Part I
Year:
2011

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Abstract

A characteristics of imbalanced points is their localities--an imbalanced point may be contiguous to some other imbalanced points in terms of 8-connectivity. A two-layer scheme was recently proposed for matching imbalanced points based on localities, where the first layer aims to build locality correspondence, and the second layer aims to build point correspondence within corresponding localities. Under the framework of the two-layer matching, we propose a hybrid representation of imbalanced points. Specifically, an imbalanced point in the first layer is represented by a discriminant SIFT-type descriptor, and in the second layer, the imbalanced point is simply represented by a patch-type descriptor (the intensities of its neighborhood). We will justify the rationale of the proposed hybrid representation scheme and show its superiority over nonhybrid representation with experiments.