Abstract: This paper proposes a multi-sensor image registration algorithm based on line features and sift points.Firstly,line features from reference image and image to be rectified are matched,and virtual corners are constructed on the basis of matched lines.Next,for the lack of traditional sift algorithm in multi-sensor image registration,sift control points are extracted by line constraining primitive matched sift points.Finally,virtual corners and SIFT control points are combined to construct TIN for tiny facet primitive rectifying.Experimental results show that the proposed algorithm has high registration accuracy.