I have calculated at sensor reflectance for a multispectral image and performed atmospheric correction. The reflectance values for the visible and NIR bands are between 0.2 to 0.01 for surfaces, ...
I have encountered a, to me, strange behaviour in the histogram function of QGIS (2.2.0 Valmiera on Windows 7). Basically the same image produces totally different histograms. I might have missed ...
I'm busy working on a project and I have orthorectified and atmospherically corrected SPOT5 images. We now need to create a point shapefile and then extract the spectral value of the cell at that ...
I'm using Grass 6.4.3 in Linuxmint 16. I don't have a very big problem but I'm trying to understand what is Grass doing, if I'm applying the process correctly and if there is something wrong with my ...
All, I'm working on a project using satellite imagery of a large braided river. I've been provide lots of SPOT5 images (that overlap). I've created a geodatabase, created a mosaic dataset, added the ...
Using the SPOT equation ρ = π L/[E cos (θs) d-²] to calculate TOA reflectance from Radiance. L was calculated using this equation [L = (X/A) + B] d was calculated by converting date to julian day ...