Mint image registration is an important step of the authenticity identification and defect detection of valued coins based on image recognition. On account of the specific of mint image, the texture image formed by edges is proposed to substitute the grayscale as the characteristic for image registration. The proposed registration algorithm utilizes various integral projection methods including polar coordinates projection. The translation, rotation and scale parameters are obtained by calculating the cross-correlation functions and its maximum parameters of the projection profiles of the sample image and template image. This process is iterated multiple times to achieve accurate registration. The proposed registration algorithm lays a sound foundation for further identification of authenticity and defect detection of valued coins.