A fast template matching algorithm based on geometric features of image edges is presented in this paper. Algorithm using edge The similarity calculation of the position and the gradient direction is used as the matching information. Can be very good to avoid because of the image The effects of dark changes, illumination and rotation are not uniform. To a good matching result. In order to obtain the coordinates of the edge points and the gradient direction, this paper is based on the surface fitting principle, A fast algorithm for accurate gradient orientation and sub pixel edge coordinates is derived by using the translation transformation. Not only speed up The processing speed of the algorithm is also the premise guarantee of the high precision of the matching algorithm. In order to satisfy the matching algorithm in real time The search strategy of the threshold judgment and the image Pyramid algorithm is mainly used in the performance requirements. In the threshold judgment,

fast template matching.pdf

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