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Shape Matching of Two-Dimensional Objects
February 1984 (vol. 6 no. 2)
pp. 137-156
Bir Bhanu, Aeronutronic Division, Ford Aerospace and Communications Corporation, Newport Beach, CA 92660.
Olivier D. Faugeras, INRIA, Rocquencourt, France; University of Paris XI, Paris, France.
In this paper we present results in the areas of shape matching of nonoccluded and occluded two-dimensional objects. Shape matching is viewed as a ``segment matching'' problem. Unlike the previous work, the technique is based on a stochastic labeling procedure which explicitly maximizes a criterion function based on the ambiguity and inconsistency of classification. To reduce the computation time, the technique is hierarchical and uses results obtained at low levels to speed up and improve the accuracy of results at higher levels. This basic technique has been extended to the situation where various objects partially occlude each other to form an apparent object and our interest is to find all the objects participating in the occlusion. In such a case several hierarchical processes are executed in parallel for every object participating in the occlusion and are coordinated in such a way that the same segment of the apparent object is not matched to the segments of different actual objects. These techniques have been applied to two-dimensional simple closed curves represented by polygons and the power of the techniques is demonstrated by the examples taken from synthetic, aerial, industrial and biological images where the matching is done after using the actual segmentation methods.
Citation:
Bir Bhanu, Olivier D. Faugeras, "Shape Matching of Two-Dimensional Objects," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 6, no. 2, pp. 137-156, Feb. 1984, doi:10.1109/TPAMI.1984.4767499
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