Based on analyzing the traditional template matching algorithm, this paper identified the key factors restricting the speed
of matching and put forward a brand new fast matching algorithm based on projection. Projecting the grayscale image,
this algorithm converts the two-dimensional information of the image into one-dimensional one, and then matches and
identifies through one-dimensional correlation, meanwhile, because of normalization has been done, when the image
brightness or signal amplitude increasing in proportion, it could also perform correct matching. Experimental results
show that the projection characteristics based image registration method proposed in this article could greatly improve
the matching speed, which ensuring the matching accuracy as well.
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