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A Corner Detector based on Global and Local Curvature Properties

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CORNER works by the following step:
1. Apply the Canny edge detector to the grey level image and obtain a binary edge-map.
2. Extract the edge contours from the edge-map, fill the gaps in the contours.
3. Compute curvature at a low scale for each contour to retain all true corners.All of the curvature local maxima are considered as initial corner candidates.
4. Initial corner candidates are compared using an adaptive local threshold to remove the round corners.
5. The angles of corner candidates are evaluated to eliminate any false corners due to quantization noise and trivial details. The above evaluation is based on a dynamic region of support, which changes according to its adjacent corner candidates.
6. End points of contours are considered with an additional criterion.

Algorithm is derived from:
X.C. He and N.H.C. Yung, "Curvature Scale Space Corner Detector with Adaptive Threshold and Dynamic Region of Support", Proceedings of the 17th International Conference on Pattern Recognition, 2:791-794, August 2004.

Improved algorithm of above has been published in:
X.C. He and N.H.C. Yung, 'Corner detector based on global and local curvature properties', Optical Engineering, 47(5), pp: 057008, 2008. (This paper is included in corner.rar for reference)

Free download from Shareware Connection - Apply the Canny edge detector to the grey level image and obtain a binary edge-map

Publisher: Xiaochen He | License: Shareware
Version: 1.0 | Size: 2816 KB | Platform: Matlab, Scripts
Released Date: 26-06-2013 | Rating: 0 | Title: A Corner Detector based on Global and Local Curvature Properties

Author Url: http://www.mathworks.com
Program Info Url: http://www.mathworks.com
Download Url: http://www.mathworks.com/matlabcentral/fx_files/7652/2/Corner.zip

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