matchTemplate with non-rectangular templ

Question

Is there some way for matchTemplate to work with a non-rectangular templ? For example to use the alpha channel, etc to ignore certain pixels when calculating the score?

The various formulas for scores SHOULD generalize to non-rectangular templates.

Answer 1

If you are using openCV 3 you can use mask to do template match on non-rectangular regions.

But in case you are using openCV 2, you have to write your own function to mask your template and then do template match on the source image.