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

fYear

2012

fDate

22-27 July 2012

Firstpage

4359

Lastpage

4362

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6350408

Filename

6350408