Planar Object Detection under Scaled Orthographic Projection

Authors:
Julián Ramos Cózar;Nicolás Guil Mata;Emilio L. Zapata
Affiliations:
-;-;-
Venue:
DGCI '00 Proceedings of the 9th International Conference on Discrete Geometry for Computer Imagery
Year:
2000

Citing 14
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Abstract

In this work a new method to detect objects under scaled orthographic projections is shown. It also calculates the parameters of the transformations the object has suffered. The method is based on the use of the Generalized Hough Transform (GHT) that compares a template with a projected image. The computational requirements of the algorithm are reduced by restricting the transformation to the template edge points and using invariant information during the comparison process. This information is obtained from a precomputed table of the template that is directly transformed and compared with the image table. Moreover, a multiresolution design of the algorithm speeds-up the parameters calculation.