This work began last week for a recognizing task, for which I have to calculate the accuracy of template matching and prefer sub-pixel accuracy if it is possible. The 1st thing I have to consider is the speed of existing approaches I can use in the project. The ones implemented via OpenCV were used for test and it seems acceptable while running on my laptop. Then, I come to the 2nd work, i.e. the accuracy.
Any suggestion would be appreciated.