Digital photogrammetry system based on unmanned airship and aerial image sequence stitching

The constitution of the digital photogrammetry system based on unmanned airship,the aerial image acquisition,and the aerial image sequence stitching were emphasized at first.Then,for solving the problem in data procestang such as the large amount of data as well as a lot of time and work consumed,the methods were proposed from computer vision theory as follows: pre-procestang such as cutting and sampling before image sequence stitching can greatly improve the speed and quality of image sequences procestang;Aerial image sequence rapidly stitching based on the sift feature points to minimize manual intervention and stitch automatically can meet the need in the special situation such as minimizing disaster and emergency response.Finally,the case of aerial image sequence stitching acquired from Ye Ya lake in Yan Qing County states the robustness and efficiency of aerial image sequence stitching based on the sift feature points.