Cartosat-1 Euro-Maps 3D

A large number of European cities are covered by this dataset; for each city you can find one or more Cartosat-1 ortho image products and one or more Euro-Maps 3D DSM tiles clipped to the extent of the ortho coverage.

The Euro-Maps 3D DSM is a homogeneous, 5 m spaced Digital Surface Model semi-automatically derived from 2.5 m Cartosat-1 in-flight stereo data with a vertical accuracy of 10 m. The very detailed and accurate representation of the surface is achieved by using a sophisticated and well adapted algorithm implemented on the basis of the Semi-Global Matching approach. The final product includes several pixel-based quality and traceability layers:

The dsm layer (*_dsm.tif) contains the elevation heights as a geocoded raster file
The source layer (*_src.tif) contains information about the data source for each height value/pixel
The number layer (*_num.tif) contains for each height value/pixel the number of IRS-P5 Cartosat-1 stereo pairs used for the generation of the DEM
The quality layer (*_qc.tif) is set to 1 for each height/pixel value derived from IRS-P5 Cartosat-1 data and which meets or exceeds the product specifications
The accuracy vertical layer (*_acv.tif) contains the absolute vertical accuracy for each quality controlled height value/pixel.
The ortho image is a Panchromatic image at 2.5 m resolution. The following table defines the offered product types.

EO-SIP product type Description
PAN_PAM_3O IRS-P5 Cartosat-1 ortho image
DSM_DEM_3D IRS-P5 Cartosat-1 DSM