The openMVG licence is MPL2 but some code used to provide interesting functionnalities have different licences or are subject to patent.
Such code takes place in the patented directory.
In order to compute corresponding points between images pairs, openMVG uses natively SIFT keypoints and their associated descriptors. The used code is a subset of the [VLFEAT] library.
You can replace this keypoints and descriptors provided by any version of your choice to use openMVG in a non-research context. Suggestions for features points:
- CORNERS: HARRIS, FAST,
- REGIONS: MSER,
- BLOBS: AKAZE.
- BINARY: M-LDB (see AKAZE paper), BRIEF, Nested shape descriptor,
- FLOATING POINT: DAISY, LIOP descriptors.