A New Approach to Obtain Subpixel Corner Point Coordinates Based on Position from Cornerness Map Refinement
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چکیده
This paper deals with a proposing a new approach to specify corner points coordinates in subpixel accuracy. The describing algorithm uses the regular cornerness map obtained from the usual corner detectors as initial step. The main idea is to consider the cornerness values from a neighboring area around found corner point as a 3D profile object and to find the coordinates of its centroid. The part of an article is dedicated to the comparisons of this method with the traditional pixel detector and two other subpixel detectors, which refine the coordinates using the overlaying of cornerness map with curve and 2D quadratic function. The all results were statistically analyzed and are listed in the tables and turned into corresponding findings and conclusions. Keywords— corner detection; subpixel detectors; Harris detector; homography
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