Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6949195 | ISPRS Journal of Photogrammetry and Remote Sensing | 2018 | 17 Pages |
Abstract
The implementation and evaluation of a weighted Aâ algorithm for orthoimage mosaic with UAV (Unmanned Aircraft Vehicle) imagery is proposed. The initial seam-line network is firstly generated by standard Voronoi Diagram algorithm; an edge diagram is generated based on DSM (Digital Surface Model) data; the vertices (conjunction nodes of seam-lines) of the initial network are relocated if they are on high objects (buildings, trees and other artificial structures); and the initial seam-lines are refined using the weighted Aâ algorithm based on the edge diagram and the relocated vertices. Our method was tested with three real UAV datasets. Two quantitative terms are introduced to evaluate the results of the proposed method. Preliminary results show that the method is suitable for regular and irregular aligned UAV images for most terrain types (flat or mountainous areas), and is better than the state-of-the-art method in both quality and efficiency based on the test datasets.
Keywords
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Physical Sciences and Engineering
Computer Science
Information Systems
Authors
Zheng Maoteng, Xiong Xiaodong, Zhu Junfeng,