ATCOR Workflow for IMAGINE - FAQ

On request, we give out a free trial version that is limited to 15 days of usage.

ATCOR is available either directly from GEOSYSTEMS GmbH or your local Hexagon Geospatial distributor. Please see the ATCOR Workflow for IMAGINE Purchase Website for details.

Currently ATCOR Workflow for IMAGINE cannot be licensed for a hardware key/dongle.

ALI-Advanced LI
ALOS AVNIR-2
ASTER VNIR (3 Bands)
ASTER VNIR+SWIR (9 Bands)
ASTER VNIR+SWIR+TIR (14 Bands)
Cartosat PAN
Deimos-2
DMC
Formosat-2
Formosat-2 PAN
Gaofen1
Gaofen1 PAN
Gaofen2
Gaofen2 PAN
GEOEYE-1
IKONOS Multispectral
IKONOS Panchromatic
IRS-1A/B LISS-2
IRS-1C/D LISS-3
IRS-1C/D PAN
IRS-P6 AWiFS
IRS-P6 LISS-3
IRS-P6 LISS-4
KOMPSAT-2
KOMPSAT-2 PAN
KOMPSAT-3
KOMPSAT-3 PAN
Landsat-4/5 MSS
Landsat-4/5 TM
Landsat-7 Multispectral
Landsat-7 Panchromatic
Landsat-8 MS (8 Bands)
Landsat-8 MS+TIRS (10 Bands)
Landsat-8 Panchromatic
NAOMI-1
NAOMI-1 PAN
OrbView-3 Multispectral
OrbView-3 Panchromatic
Pleiades Multispectral
PlanetScope Multispectral SD
QuickBird Multispectral
QuickBird Panchromatic
RapidEye
Resourc2-AWiFS
Resourc2-LISS-3
Resourc2-LISS-4
SAC-C / MMRS
Sentinel-2 10m BGRN
Sentinel-2 13 Bands
SPOT-1/2/3 Multispectral
SPOT-1/2/3 Panchromatic
SPOT-4 Multispectral
SPOT-5 Multispectral
SPOT-5 Panchromatic
SPOT-6 Multispectral
SPOT-6 Panchromatic
SPOT-7 Multispectral
SPOT-7 Panchromatic
Superview-1 Multispectral
Superview-1 Panchromatic
THEOS Multispectral
THEOS Panchromatic
TripleSat Multispectral
Venus
WorldView-2 4-Band MS
WorldView-2 8-Band MS
WorldView-2 Panchromatic
WorldView-3 16-Band MS
WorldView-3 4-Band MS
WorldView-3 8-Band MS
WorldView-3 Panchromatic
WorldView-3 SWIR
WorldView-4 4-Band MS
ZY-3 MS
ZY-3 PAN

In case a sensor does not show up in the list, any other sensor can be selected instead, provided it has the same (or very similar) spectral bands. A similar spatial resolution is not required. For sensors with pointing capabilities the options also should be similar.

On request, it is possible to integrate sensors into ATCOR Workflow for IMAGINE. The sensor specifications need to be known or being provided by the customer. Please contact us at info(at)geosystems.de.

For ATCOR Workflow für IMAGINE the system requirements for ERDAS IMAGINE are valid. ATCOR Workflow for IMAGINE needs a running ERDAS IMAGINE license (Minimum: IMAGINE Essentials) and is available for PC systems only. In order to use the spatial model operators for customized image analysis process chains, an IMAGINE Professional is needed. For using ATCOR Workflow for IMAGINE as unattended batch process, an extra commercial IDL license is needed.

ATCOR Workflow for IMAGINE includes both ATCOR-2 and ATCOR-3. According to the type of region and available data sets, you choose the appropriate module. ATCOR-2 is the version of choice if the terrain covered by the imagery to be calibrated is almost flat or if a proper Digital Elevation Model (DEM) is not available. ATCOR-2 can also be used for fast checks and preliminary testing. For non-flat areas ATCOR-3 is recommended. For ATCOR-3 a DEM is required.

Users of the old ATCOR for IMAGINE with a valid software maintenance contract can migrate to the new ATCOR Workflow for IMAGINE at attractive special conditions.

Old website ATCOR for IMAGINE

The pixel size of the DEM should be at least the pixel size of the image you want to process. The more rugged the terrain, the higher the spatial resolution of the DEM should be.

No, ATCOR requires the original spectral information as collected by the sensor. Pan-Sharpening is an irreversible process. The original information, i.e. at-sensor radiance, cannot be restored. So the retrieval of surface reflectance would fail. The same applies to image data that were modified by Dynamic Range Adjustment (DRA). Only linear spectral transformations are allowed provided that the transformation parameters are known. These transformation parameters have to be considered via the calibration file used as input for ATCOR.

Currently, you can atmospherically correct images of panchromatic and multispectral sensors with ATCOR Workflow for IMAGINE.