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|Title:||IMAGE-2006 Mosaic: SPOT-4 HRVIR, SPOT-5 HRG, and IRS-LISS III Cloud Detection|
|Publisher:||Publications Office of the European Union|
|Other Identifiers:||EUR 23636 EN|
|Type:||EUR - Scientific and Technical Research Reports|
|Abstract:||This report details the methodology adopted for detecting clouds from the IMAGE-2006 SPOT-4~HRVIR, SPOT-5~HRG, and IRS-LISS~III imagery. This detection is necessary for creating a mosaic minimising cloud cover. Indeed, when clouds appear in a region where two or more images overlap, an image with no clouds in this region must be selected to cover this region. The availability of cloud masks enables an automatic selection during mosaicing. The proposed methodology is based on a modified cloud detection algorithm originally developed for Landsat sensors. The modifications address the lack of a thermal channel for the IMAGE-2006 imagery. Spatial context is also exploited in a second stage thanks to a series of morphological transformations. Overall, the produced cloud masks are satisfactory for automatically minimising cloud cover while mosaicing.|
|JRC Institute:||Institute for Environment and Sustainability|
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