Image matching is one of the most important tasks in Unmanned Arial Vehicles (UAV) photogrammetry applications. The number and distribution of extracted keypoints play an essential role in the reliability and accuracy of image matching and orientation results. Conventional detectors generally produce too many redundant keypoints. https://www.diegojavierfares.com/mega-grab-Victorian-Green-and-Gold-Masquerade-Mask-huge-savings/