The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Download
Publications Copernicus
Download
Citation
Articles | Volume XL-3/W2
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W2, 135–140, 2015
https://doi.org/10.5194/isprsarchives-XL-3-W2-135-2015
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W2, 135–140, 2015
https://doi.org/10.5194/isprsarchives-XL-3-W2-135-2015

  10 Mar 2015

10 Mar 2015

TOWARDS UNDERSTANDING URBAN PATTERNS AND STRUCTURES

E. Michaelsen, R. Gabler, and N. Scherer-Negenborn E. Michaelsen et al.
  • Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB, Gutleuthausstrasse 1, 76275 Ettlingen, Germany

Keywords: Gestalt algebra, perceptual grouping, remotely sensed images, intelligent urban design

Abstract. Intelligent urban design is a set of principles for desirable future urban structures. Existing urban structures can be analysed using remotely sensed images. In order to foster this analysis both in speed and objectivity automation is proposed in this work. Automatic Gestalt perception is distinguished from automatic knowledge-based analysis. Both will be required. For the Gestalt side an algebraic approach is utilized. This Gestalt algebra operates on a 6-D domain containing position, orientation, frequency, scale and assessment. It defines how to form aggregates from parts. Any Gestalt can be combined with arbitrary others, but good assessments are only achieved, if the parts are mutually in Gestalt-arrangements. There are operations for mirror-symmetry, good continuation in rows and rotational-symmetry. In this paper experiments are made only with mirror-symmetry and row-continuation. Example images of Thimphu, Bhutan and Phoenix, Arizona are obtained by use of Google Earth. The results are to a large degree in accordance with human perceptual grouping. Some illusory groupings not in accordance with human perception, as well as examples salient to humans which are not instantiated by the system, are discussed as well.