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Boundary location from range data using Hough transform
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DOI：10.1016/S0031-3203(00)00118-7.png)
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Abstract
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Sonar offers a convenient and economic means of obtaining range data. However, noise in such range data can seriously affect the detection of nearby boundaries, using the conventional circular back projection method. In this paper, we present a new formulation of the problem whereby the boundary to be detected is identified with the envelop curve of the ellipses defined by the range data. Hough transform is then applied to extract the local tangents to the boundary. The method was tested on both simulated and real data from polygonal boundaries with very promising results. (C) 2001 Pattern Recognition Society. Published by Elsevier Science Ltd. All rights reserved.
Keywords:
data fusion
boundary location
sonar
range data
circular back projection
Hough transform
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