NDLI: Model-free dense stereo reconstruction for creating realistic 3D city models

Content Provider	IEEE Xplore Digital Library
Author	Kuschk, G.
Copyright Year	2013
Description	Author affiliation: Remote Sensing Inst., German Aerosp. Center (DLR), Wessling, Germany (Kuschk, G.)
Abstract	In this paper we describe a framework for fully automatic and model-free generation of accurate and realistic 3D city models using multiple overlapping aerial images. The underlying DSM is computed by dense image matching, using a robustified Census transform as cost function. To further reduce the noise of mismatches, we afterwards minimize a global energy functional incorporating local smoothness constraints using variational methods. Due to the convexity of the framed problem, the solution is guaranteed to converge towards the global energy minimum and can be efficiently implemented on GPU using primal-dual algorithms. The resulting point cloud is then being triangulated, local planarity constraints are exploited to reduce the number of vertices and finally a multi-view texturing is applied. The quality of the DSM and the 3D Model is evaluated on a complex urban environment, using reference data generated by laser scanning (LiDAR).
Starting Page	202
Ending Page	205
File Size	1190376
Page Count	4
File Format	PDF
ISBN	9781479902132
e-ISBN	9781479902118
e-ISBN	9781479902125
DOI	10.1109/JURSE.2013.6550700
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-21
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid modeling Three-dimensional displays Computational modeling Transforms Cities and towns Cost function Equations
Content Type	Text
Resource Type	Article

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