Given a small training set of images (say, around 6 max) of the same object, how to measure how likely is another query image to contain the given object?
The training images are "clean", i.e. only the original object is present. On the other hand, the query images normally contain only an object of the same class (i.e. if the training images contain a mango, the query images will be definitely fruits, although maybe not mangoes). The query images have varied backgrounds, though.
I tried SURF and FLANN (from OpenCV), with various values of Hessian, but it's not very accurate: it works for certain images but not for others. Maybe it's because of the nature of the objects I'm training to detect? Any pointers would be appreciated. Thanks!