Geographic Information Systems

Questions tagged [flaash]

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Fast Line-of-sight Atmospheric Analysis of Hypercubes

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Planetscope images atmospheric correction

I have downloaded an image which is level 3B processed (so I already have surface reflectance), but my assignment is to compare the data values of the SR file with my results. At first I applied ...
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1answer
95 views

Pleiades atmospheric correction

I have phr1a and phr1b images (Pleiades) and I need to make atmospheric correction. First, I tried to do this by using Envi FLAASH. by the way, I tried also ERDAS atcor but there was also same ...
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503 views

ENVI Error running FLAASH Atmosphere Correction

I've made a Radiometric calibration on a Landsat-8 image. Next, I've tried to make a FLAASH Atmosphere Correction from the Toolbox but I get a warning message and the process stops with errors. The ...
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252 views

ENVI FLAASH Error

I try to run FLAASH on a Landsat 8 image. I radiometrically corrected the image using FLAASH output parameters using ENVI 5.4. It gives me the error message: ACC error: modrd5:reading archive file ...
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Improving FLAASH atmospheric correction to accurately represent subtle features in a target's spectral profile?

I am attempting to use ERDAS target detection models to detect/differentiate a specific type of soil from a general background. We have gathered spectral signatures of the target soil in the field ...
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335 views

Atmospheric correction using FLAASH

I want to run atmospheric correction on my Landsat TM5 picture using FLAASH (ENVI 4.8) but when I input radiance image (BIL format) into it, then this message is shown: "Enter ASCII filename ...
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1answer
138 views

Atmospheric correction and difference(s) between ATCOR and FLAASH [closed]

Talking about atmospheric correction, I'm interested in knowing the difference between ATCOR and FLAASH given that both are based on MODTRAN. Anyone happened to know this or have a recommended text?
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1answer
655 views

Atmospheric correction with FLAASH

I see that people have suggested this post correction equation ((b1 le 0)*0+(b1 ge 10000)*1+(b1 gt 0 and b1 lt 10000)*float(b1)/10000) for atmospheric correction using FLAASH (where surface ...
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0answers
50 views

Issues with using FLAASH on GeoEye data

I am trying to carry out a FLAASH atmospheric correction on radiometricaly corrected GeoEye-1 spatial image (working within ENVI). I am getting the wrong results from my FLAASH correction and believe ...
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2answers
2k views

Using MODIS Data after FLAASH

I need to convert modis MOD021km data to reflectance and Brightness temperature. I know that some plugins for Envi is doing this with modis data but I want to run an atmospheric correction on my data ...