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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 10 — May. 15, 2013
  • pp: 1676–1678

Influence of shadow removal on image classification in riverine environments

Anthony M. Filippi and İnci Güneralp  »View Author Affiliations


Optics Letters, Vol. 38, Issue 10, pp. 1676-1678 (2013)
http://dx.doi.org/10.1364/OL.38.001676


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Abstract

Shadows in remote-sensor images can yield marked errors in classification of riverine environments. We propose use of a modified shadow-removal algorithm as a preprocessing step for remote-sensing image classification of riverine landscapes. To accommodate characterization of spatially complex river features in the image, we investigate an illumination suppression-based shadow-removal algorithm, modified to include a user-defined tiling approach. We quantitatively evaluate the influence of shadow removal from aerial photography on classification accuracy as such studies are currently lacking. Experimental results demonstrate that this modified shadow-removal method significantly increases classification accuracy and improves detection of small river channels partially obscured by shadow.

© 2013 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.2960) Image processing : Image analysis
(100.5010) Image processing : Pattern recognition
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: April 1, 2013
Manuscript Accepted: April 3, 2013
Published: May 10, 2013

Citation
Anthony M. Filippi and İnci Güneralp, "Influence of shadow removal on image classification in riverine environments," Opt. Lett. 38, 1676-1678 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-10-1676


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