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?
I tried to use the same method on the fourier transform of the image and the template , but still the result after rotation is different
Template matching with matchTemplate
is not good when your object is rotated or scaled in scene.
You should try openCV function from Features2D
Framework. For example SIFT
or SURF
descriptors, and FLANN
matcher. Also, you will need findHomography
method.
Here is a good example of finding rotated object in scene.
Update:
In short, algorithm is this:
Finding keypoints of your object image 1.1. Extracting descriptors from those keypoints
Finding keypoints of your scene image 2.1 Extracting descriptors from keypoints
Match descriptors by matcher
Analyze your matches
There are different classes of FeatureDetectors, DescriptorExtractors, and DescriptorMatches, you may read about them and choose those, that fit good for your tasks.