LSGP: Line-SIFT Geometric Pattern for wide-baseline image matching

In this paper, a novel descriptor - Line-SIFT Geometric Pattern (LSGP) is proposed for wide-baseline image matching. In this descriptor, the geometry relationship between a line segment and its neighboring SIFT features is used to describe the line segments. By measuring the similarities between line segments, we could find line correspondences between multiple images which embed more intuitive information for further application such as 3D reconstruction. The experiment results have proved that our LSGP descriptor has good performance under various conditions.