[ VIGRA Homepage | Function Index | Class Index | Namespaces | File List | Main Page ]
|   | Symmetry Detection |  | 
| Functions | |
| template<... > | |
| void | radialSymmetryTransform (...) | 
| Find centers of radial symmetry in an image.  More... | |
Measure the local symmetry at each pixel.
| void vigra::radialSymmetryTransform | ( | ... | ) | 
Find centers of radial symmetry in an image.
This algorithm implements the Fast Radial Symmetry Transform according to [G. Loy, A. Zelinsky:  "A Fast Radial Symmetry Transform for Detecting
Points of Interest", in: A. Heyden et al. (Eds.): Proc. of 7th European Conf. on Computer Vision, Part 1, pp. 358-368, Springer LNCS 2350, 2002]. Minima of the algorithm response mark dark blobs, maxima correspond to light blobs. The "radial strictness parameter" is fixed at alpha = 2.0, the spatial spreading of the raw response is done by a Gaussian convolution at 0.25*scale (these values are recommendations from the paper). Loy and Zelinsky additionally propose to add the operator response from several scales (see usage example below).
Declarations:
pass 2D array views:
Usage:
#include <vigra/symmetry.hxx>
 Namespace: vigra
| 
© Ullrich Köthe     (ullrich.koethe@iwr.uni-heidelberg.de)  | 
html generated using doxygen and Python
 |