StructureFromMotion may fail when there is not enough features
extracted from the image dataset (weakly textured dataset like indoor
environment). In this case, you can try to augment the amount of
Using more features will reduce performances on large datasets. Another problem is that adding too much features (less reliable) may also reduce the amount of matches by creating more ambiguities and conflicts during features matching.
Guided Matchingparameter on
FeatureMatchingis useful to reduce conflicts during feature matching but is costly in performance. So it is very useful when you have few images (like a cameras rig from a scan studio).