Evaluating the Viability of Pictometry® Imagery for Creating Models of the Built Environment

  • Authors:

  • Astrid Jurisch;David Mountain

  • Affiliations:

  • BLOM Aerofilms Ltd., Cheddar, UK;Department Information Science, City University, London, UK

  • Venue:
  • ICCSA '08 Proceeding sof the international conference on Computational Science and Its Applications, Part I
  • Year:
  • 2008

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Abstract

In order to escape the `flat-land' paradigm, still dominant within Geographic Information Systems (GIS), three-dimensional (3D) models are required which can represent both natural and manmade environments. This study investigates the viability of using Pictometry® imagery for creating city models, with particular focus upon the benefits that georeferenced oblique imagery can offer for both geometric modelling and texturing. An approach is presented for the manual creation of a geometric and textured model based on ortho and oblique Pictometry® imagery for a study area in Helsinki. The intended usage is personal orientation and navigation, a Tourist Information System is provided as an use case scenario. Qualitative and quantitative methods were used to evaluate the textured block model. Expert interviews indicate that the textured city model is suitable for the intended purpose. A review of automated 3D modelling techniques identifies the potential for future work combining Pictometry® imagery and LiDAR data.