Speeded up robust feature(SURF) ?
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Hi,
SURF uses scale-space created by applying kernels of increasing size to the original image, to make it scale invariant.
Now since each level of the space has, image with their own feature point. I'm wandering how SURF determine which level of scale it has to take to determine the dominant orientation of the feature point to be rotation invariant?
0 comentarios
Respuestas (1)
David Young
el 2 de Ag. de 2011
Not really a MATLAB question - but anyway, the scale at which the feature was detected is used to determine its dominant orientation. See the second sentence of section 4.1 of the paper by Bay et al.
6 comentarios
David Young
el 15 de Ag. de 2011
The descriptor has information about the pattern of light and dark in the pixels around the feature point - but this information is independent (to a good approximation) of the scale or orientation of the pattern.
Ver también
Categorías
Más información sobre Feature Detection and Extraction en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!