3D image geo-registration using vision-based modeling

Karl Ni, Zachary Sun, Nadya Bliss

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Image geo-registration is the process of relating a photograph and its pose to referenced world coordinates. The application is relevant, especially to the social networking, photo-sharing, and intelligence communities, where the locations of objects of interest are to be determined. This paper proposes an algorithm that identifies and geo-registers query photographs in the absence of any meta-data that are spatially co-located with training sets of user-collected images. Training images construct a 3D model using inherent structure from motion between images. Using SIFT features, the 3D model fuses co-located points and generates an averaged SIFT comparison feature. This paper also advises on training set augmentation to mitigate deleterious illumination, seasonal, and weather effects by introducing methods of merging separate point clouds. As such, probability of detection (and therefore, registration performance) is enhanced. After the 3D model is generated, each test photograph is matched to the 3D point cloud and registered using similar camera refinement and positional optimization techniques. The results provide accuracy to within a few meters of the absolute geo-coordinates.

Original languageEnglish (US)
Title of host publication2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Proceedings
Pages1573-1576
Number of pages4
DOIs
StatePublished - Aug 18 2011
Externally publishedYes
Event36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Prague, Czech Republic
Duration: May 22 2011May 27 2011

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Other

Other36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011
CountryCzech Republic
CityPrague
Period5/22/115/27/11

Keywords

  • Image Registration
  • Structure from Motion

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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