Peter Pehani

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Kibera (edge region within the Nairobi) is the biggest informal settlement in Kenya, and one of the biggest in Africa. The population estimates vary between 170,000 and 1 million and are highly debatable. What is certain is that the area is large (roughly 2.5 km2), host at least hundreds of thousands people, is informal and self-organized, stricken by(More)
In response to the increasing need for automatic and fast satellite image processing SPACE-SI has developed and implemented a fully automatic image processing chain STORM that performs all processing steps from sensor-corrected optical images (level 1) to web-delivered map-ready images and products without operator's intervention. Initial development was(More)
In response to the increasing need for fast satellite image processing SPACE-SI developed STORM—a fully automatic image processing chain that performs all processing steps from the input optical images to web-delivered map-ready products for various sensors. This paper focuses on the automatic geometric corrections module and its adaptation to very high(More)
In September 2010 the International Charter Space and Major Disasters was activated to record extensive floods in Slovenia. A time series of medium resolution radar images (ENVISAT, RADARSAT-2) was obtained and three techniques of flood area detection were employed: pixel-based water delineation, object-based classification and machine learning procedure.(More)
When object-based analysis is applied to very high-resolution imagery, pixels within the segments reveal large spectral inhomogeneity; their distribution can be considered complex rather than normal. When normality is violated, the classification methods that rely on the assumption of normally distributed data are not as successful or accurate. It is hard(More)
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