How is atmospheric correction performed in Geomatica 2013?
Geomatica’s 2013 Atmospheric Correction Wizard now automatically performs all of the necessary DEM preparations. The wizard is will compare the resolution of the DEM to the input image and automatically determine the optimal resampling technique. Page | 6 18. Click Next to proceed to the Visibility and ground reflectance step
How does IAR correction work for geospatial data?
Use IAR Reflectance Correction (Internal Average Relative Reflectance) to normalize images to a scene-average spectrum. This is particularly effective for reducing hyperspectral data to relative reflectance in an area where no ground measurements exist and little is known about the scene. It works best for arid areas with no vegetation.
What do you need to know about the atmosphere in Geomatica?
Three pieces of information are required: 1) Aerosol type (molecular and particulate makeup of atmosphere) a. This parameter must be defined by the user 2) Condition (Water vapor content of atmosphere) a. This parameter is automatically estimated based on the scene’s latitude and acquisition date/time
How to do focus on Pleiades in Geomatica?
In Focus simply click on Help General. In the Contents tab navigate to Focus Atmospheric Correction Preparing data for atmospheric correction. If you are using Pleiades imagery, use the FIMPORT algorithm found in the Algorithm Librarian.
Which is more stable haze removal or ground reflectance?
The haze removal is more stable and settings have been defined that are sensor specific The haze removal algorithm can be operated as standalone, which will generate haze free images in the DN domain. However, in this workflow (ATCOR – Ground Reflectance) the haze removed results will be converted to reflectance values.
How does PCI Geomatics help with haze removal?
PCI Geomatics has developed enhanced haze removal and cloud masking algorithms that can significantly improve results of the haze removal and cloud masking operations.