June 27, 2015
by chris
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This is not going to be a philosophical text on the merits of ground surveys in contrast to remote mapping, with accuracy i am referring just to the plain positional accuracy of the pixels in images, not the semantics. A … Continue reading
June 23, 2015
by chris
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While reviewing and processing satellite data i frequently come across images that would be useful for mapping in OpenStreetMap – either because the imagery available in the normal sources like the Bing and Mapbox satellite layers contains no images at … Continue reading
June 23, 2015
by chris
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Earlier today ESA with much fanfare launched a new earth observation satellite. Something like this is always good news but the hyperbole used in marketing materials and press releases proclaiming how this will start a new era in earth observation … Continue reading
June 20, 2015
by chris
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Digital elevation data is an important basis of map production and geodata processing these days. I have written about elevation data sources and use of such data previously on several occasions. SRTM data is the most widely used elevation data … Continue reading
June 14, 2015
by chris
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After introducing the Landsat mosaic of Germany and the Alps recently i am happy to announce the availability of a similar image from the other side of the globe, the Antarctic peninsula. Compared to the parts of the Antarctic where … Continue reading