scale and rotation Template matching

Question

I\'m using the method of match template with CV_TM_CCORR_NORMED to compare two images ... I want to make to make this rotation and scale invariant .. any ideas?

Answer 1

Rotation invariant

For each key points:

1. Take area around key point.
2. Calculate orientation angle of this area with gradient or another method.
3. Rotate pattern and request area on this angle to 0.
4. Calculate descriptors for this rotated areas and match them.

Scale invariant

See BRISK method