Fig. 3From: Robustly building keypoint mappings with global information on multispectral imagesKeypoint mappings on a Landsat multispectral image pair. The characteristic of the visible image is close to that of the infrared image. From this aspect, the two images can be partly viewed as single-mode, and so the SIFT, ISS, ORB, and FREAK perform better. a The proposed method, b SIFT descriptors [33], c ISS descriptors [27], d ORB descriptors [29], and e FREAK descriptors [14]Back to article page