Title :
Some criteria to assess the reconstructability of shadow areas
Author :
Lorenzi, Luca ; Melgani, Farid ; Mercier, Grégoire
Author_Institution :
Dept. of Inf. Eng. & Comput. Sci., Univ. of Trento, Trento, Italy
Abstract :
A typical issue encountered in very high resolution (VHR) optical imagery is the undesired presence of shadows. Their compensation by means of appropriate techniques is however not always successful. In this work, we present different criteria, which aim at understanding a priori if it is possible or not to reconstruct a specific shadow area. They are based on a quantitative comparison between the histograms characterizing the shadow and non-shadow areas of the same typology of ground cover. A thorough experimental analysis performed on three different images is reported and discussed.
Keywords :
geophysical image processing; geophysical techniques; image reconstruction; image resolution; ground cover typology; histogram characterization; nonshadow areas; shadow area reconstructability; very high resolution optical imagery; Asphalt; Histograms; Image reconstruction; Image resolution; Image restoration; Quantization; Vegetation mapping; Shadow removal; VHR images; shadow reconstruction; shadow recovering;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350408
