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Extraction of Image Topological Graph for Recovering the Scene Geometry from Uav Collections : Volume Xl-4, Issue 1 (23/04/2014)

By Xu, Z.

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Book Id: WPLBN0004015024
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: Extraction of Image Topological Graph for Recovering the Scene Geometry from Uav Collections : Volume Xl-4, Issue 1 (23/04/2014)  
Author: Xu, Z.
Volume: Vol. XL-4, Issue 1
Language: English
Subject: Science, Isprs, International
Collections: Periodicals: Journal and Magazine Collection, Copernicus Publications
Historic
Publication Date:
2014
Publisher: Copernicus Publications, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Chen, S., Wang, R., Wang, Q., Li, F., Xu, Z., & Wu, L. (2014). Extraction of Image Topological Graph for Recovering the Scene Geometry from Uav Collections : Volume Xl-4, Issue 1 (23/04/2014). Retrieved from http://worldlibrary.in/


Description
Description: Key Laboratory of Environmental Change & Natural Disaster of MOE, Beijing Normal University, Beijing 100875, China. This study was performed aiming to construct the scene geometry with a large set of unmanned aerial vertical (UAV) collections. By improving the popular structure from motion (SfM) algorithm, we focus on the efficiency improvement on procedures of both feature detection and image matching. Distinctive features are firstly detected with a CUDA based GPU accelerate technology under the basic of SIFT algorithm (CUDA-SIFT). And then, the image topological graph is computed by finding the conjunction relationship between UAV collections with the help of flight control data acquired by the UAV platform. Image matching will be guided by the computed image topological graph to solve the traversal matching problem. Experimental results show that CUDASIFT performs much better than the original SIFT algorithm on both efficiency and feature amount. Also, the topological graph of computed image limits the searching range for feature similarity computation, resulting in dramatic speed up. A final bundler adjustment is implemented in the procedure of scene geometry reconstruction, and the structural geometry as well as the coverage completeness is far more comparable to the SfM method.

Summary
Extraction of Image Topological Graph for Recovering the Scene Geometry from UAV Collections

 

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