Recognizing an image from a list with OpenCV SIFT using the FLANN matching

Question

The point of the application is to recognize an image from an already set list of images. The list of images have had their SIFT descriptors extracted and saved in files. Nothin

Answer 1

You can try to test if when matching, the lines between the source image and the target image are relatively parallel. If it's not a correct match, then you'd have a lot of noise and the lines won't be parallel.

See the attached image which shows a correct match (using SURF and BF) - all the lines are mostly parallel (though I should point out that this is an easy example).