As far as I understand, both SURF and SIFT are patent protected.
Are there any alternative methods that can be used in a commercial application freely?
For more info on the patent check out:
I am trying to extract features from an image, but I have failed to get the points that I want to extract, and hence my image fails to match with the template.
Are there any checkpoints that I have ...
I'm trying to recreate a gassuain pyramid using the following scales:
There seems to be two concepts used here:
1) When an image is halved, applying a gaussian kernel of σ will apply as 2σ.
2) When ...