Name
Abstract | ||
|---|---|---|
In this study, we present a new contour-based corner detection method based on the turning angle curvature computed from the contour gradients of the image. In general, curvature is computed with the pixel locations of the extracted image contours. In most contour extraction methods, the image gradient information is already computed. The proposed algorithm makes use of this available information to compute the curvature function and takes local extremums as potential corner candidates. Afterwards, the candidates are validated by a novel validation algorithm which tries to approximate the local geometric structure of the contour with an iterative least squares estimation algorithm. Thus, we not only eliminate the false detected corners; but also estimate the corner strength precisely in terms of degrees. The experiments show that the detected corners with gradient-based turning angle curvature are more durable to affine transformations according to the ACU and LE criterions. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/ICASSP.2013.6637890 | Acoustics, Speech and Signal Processing |
Keywords | Field | DocType |
affine transforms,curve fitting,edge detection,feature extraction,image colour analysis,iterative methods,least squares approximations,ACU criterions,LE criterions,affine transformations,contour-based corner detection method,corner strength,curvature function,false detected corners,gradient-based turning angle curvature,image contour gradients,image contours extraction,image gradient information,iterative least squares estimation algorithm,local extremums,local geometric structure,pixel locations,robust CSS corner detector,validation algorithm,Corner detection,corner validation,curvature scale space (CSS),turning angle curvature | Affine transformation,Image gradient,Mathematical optimization,Curvature,Curve fitting,Corner detection,Feature detection (computer vision),Edge detection,Computer science,Feature extraction | Conference |
ISSN | Citations | PageRank |
1520-6149 | 3 | 0.39 |
References | Authors | |
15 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Cihan Topal | 1 | 238 | 22.30 |
| Kemal Özkan | 2 | 11 | 4.28 |
| Burak Benligiray | 3 | 16 | 6.71 |
| cuneyt akinlar | 4 | 315 | 29.92 |