Monoscopic method for the automatic determination of height of buildings in air photos

Authors

  • Edgar Nogueira Demarqui
  • Júlio Kiyoshi Hasegawa
  • Mauricio Galo

DOI:

https://doi.org/10.5380/bcg.v14i2.11820

Keywords:

Height of Buildings, Relief Displacement, Shadows Detection, Altura de Edifícios, Deslocamento Devido ao Relevo, Detecção de Sombras

Abstract

This paper proposes a monoscopic method for automatic determination of
building’s heights in digital photographs areas, based on radial displacement of
points in the plan image and geometry at the time the photo is obtained.
Determination of the buildings’ heights can be used to model the surface in urban
areas, urban planning and management, among others. The proposed methodology
employs a set of steps to detect arranged radially from the system of
photogrammetric coordinates, which characterizes the lateral edges of buildings
present in the photo. In a first stage is performed the reduction of the searching area
through detection of shadows projected by buildings, generating sub-images of the
areas around each of the detected shadow. Then, for each sub-image, the edges are
automatically extracted, and tests of consistency are applied for it in order to be
characterized as segments of straight arranged radially. Next, with the lateral edges
selected and the knowledge of the flight height, the buildings’ heights can be
calculated. The experimental results obtained with real images showed that the
proposed approach is suitable to perform the automatic identification of the
buildings height in digital images.

Downloads

Published

2008-07-18

How to Cite

Demarqui, E. N., Hasegawa, J. K., & Galo, M. (2008). Monoscopic method for the automatic determination of height of buildings in air photos. Bulletin of Geodetic Sciences, 14(2). https://doi.org/10.5380/bcg.v14i2.11820

Issue

Vol. 14 No. 2 (2008)

Section

Article

License

Submission of an original manuscript to the Journal will be taken to mean that it represents original work  not previously published, that is not being considered elsewhere for publication.

The BCG allows the author(s) to hold the copyright without restrictions  and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

The BCG also allows the authors  to retain publishing rights without restrictions.