ORIENTATION BASED BUILDING OUTLINE EXTRACTION in AERIAL IMAGES

Andrea Kovacs, T. Szirányi

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

The goal of this paper is to extract automatically the building contours regardless of shape. By extracting these contours, detection results will be more accurate, giving useful information about urban area, which is important for many tasks, like map updating and disaster management. First, we extract local feature points from the image, based on a modification of Harris detector's saliency function, which can represent urban area and building effectively. This point set is then used to define the main orientation of the buildings, which characterizes well an urban region and helps to define directions, where object contours have to be searched. Second, we applied shearlet approach to extract edges in the defined directions. This results in an edge map, which helps us to determine point subsets belonging to the same building. Convex hulls of the point subsets is used for contour initialization, then region based Chan-Vese Active Contour method is applied to extract the accurate building outlines.

Original languageEnglish
Pages (from-to)141-146
Number of pages6
JournalISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Volume1
DOIs
Publication statusPublished - Jul 16 2012
Event22nd Congress of the International Society for Photogrammetry and Remote Sensing: Imaging a Sustainable Future, ISPRS 2012 - Melbourne, Australia
Duration: Aug 25 2012Sep 1 2012

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urban area
disaster management
urban region
hull
Disasters
set theory
Detectors
disasters
detectors
detection
detector
method

Keywords

  • Aerial Image Detection
  • Building Detection
  • Feature Extraction
  • Orientation Estimation
  • Urban

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Environmental Science (miscellaneous)
  • Instrumentation

Cite this

ORIENTATION BASED BUILDING OUTLINE EXTRACTION in AERIAL IMAGES. / Kovacs, Andrea; Szirányi, T.

In: ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. 1, 16.07.2012, p. 141-146.

Research output: Contribution to journalConference article

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