Image registration based on mutual information using steerable pyramid
利用方向可控金字塔进行基于互信息的图像配准

Using steerablity of the steerable pyramid, the orientation of the image could be obtained to search the best rotation transform, meanwhile the amount of translation could be searched together so that the method could deal with registration of both rotation and translation. Mutual information was used for similarity metric. Experiment results show that this approach performs well.