关键词: 图像配准，Radon变换，功率谱估计，边缘检测

Abstract: An image registration algorithm based on Radon transform and power spectrum was presented for Cardiac magnetic resonance(MR) serial section images. At the first step, a morphological edge detection method as MR image preprocessing was used to extract the edge features of MR images which are as the inputs of registration operation.Then registration parameters of scale, rotation and translation were obtained by the registration method based on Radon transform and power spectrum. At last, the registration result was obtained by the registration parameters. The algorithm has solved the problem that the registration result is sensitive to the spatial noise of MR images, improved the accuracy of registration and reduced the computational cost With the algorithm, a hundred of MR images were used to registration tests. hhc results show that this algorithm can gain a good performance.

Key words: Image registration, Radon transform, Power spectrum, Edge detection