The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XL-4
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-4, 65–70, 2014
https://doi.org/10.5194/isprsarchives-XL-4-65-2014
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-4, 65–70, 2014
https://doi.org/10.5194/isprsarchives-XL-4-65-2014

  23 Apr 2014

23 Apr 2014

Reducing false alarm rates during change detection by modeling relief, shade and shadow of multi-temporal imagery.

B. Gorte and C. van der Sande B. Gorte and C. van der Sande
  • Delft University of Technology Geoscience & Remote Sensing Stevinweg 1, 2629 HS Delft, the Netherlands

Keywords: Change detection, Orthorectification, Rendering, Radiometry, Geometry

Abstract. Change detection on the basis of multi-temporal imagery may lead to false alarms when the image has changed, whereas the scene has not. Geometric image differerences in an unchanged scene may be due to relief displacement, caused by diferent camera positions. Radiometric differences may be caused by changes in illumimation and shadow between the images, caused by a different position of the sun. The effects may be predicted, and after that compensated, if a 3d model of the scene is available. The paper presents an integrated approach to prediction of and compensation for relief displacement, shading and shadow.