Sub-pixel edge localization based on laser waveform analysis

B. Jutzi, J. Neulist, U. Stilla

Research output: Contribution to journalConference articlepeer-review

14 Scopus citations

Abstract

Laser range data is of high interest in photogrammetry. However, compared to passive imagery, it usually has a lower image resolution, making geometry extraction and modeling challenging. A method to overcome this handicap using a laser scanner capable of full waveform analysis is proposed. The recorded pulse waveform is analyzed to find range and intensity values for all of the surfaces in the beam footprint. Sub-pixel edge localization is implemented and tested for straight edges of man-made objects, allowing a much higher precision of geometry extraction in urban areas. The results show that it is possible to find edges with an accuracy of at least one tenth of a pixel.

Original languageEnglish
Pages (from-to)109-114
Number of pages6
JournalInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
Volume36
StatePublished - 2005
Event2005 ISPRS Workshop Laser Scanning 2005 - Enschede, Netherlands
Duration: 12 Sep 200514 Sep 2005

Keywords

  • Analysis
  • Edge
  • LIDAR
  • Laser scanning
  • Sub-pixel precision
  • Urban

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