I have WV 3 image with very low pixel values in the shaded areas. Image covers a very large area and it is very clear. I am trying to do radiometric and atmospheric correction (ENVI FLAASH and QUAC). There are some 'No data' pixels after the radiometric correction and so many 0 value pixels after the atmospheric correction in the shaded areas and water. I greatly appreciate any help on this problem. Thank you!
You may do topograph correction on the images. I think that you solve this problem!
Thank you so much for all the answers! I really appreciate all suggestions.
I am not sure whether my image have any effect from topography as my study site is pretty much flat (long point, ON, Canada). Currently I do not have ATCOR, but I'll try to get it and do the atmospheric correction.
I tried to follow the S6 model with the link. I got an output file but I do not know how to interpret it and what to do next with it. I am attaching the file, can you please have a look at it? Honestly, I am not sure whether I selected the correct options,but I tried to select the most applicable options as far as possible.. I think L(target ) of shadows in my image is very low though.
I also tried something in the meantime, I think it is not very technical though. I multiplied the whole image with 100 and applied radiometric correction. I did not get any 'no data' pixels in the output. I tried to apply QUAC (ENNVI), spectral signatures looks good in the output. I know this is crazy, but just wondering whether this method is acceptable? Or can I use Dark object subtraction for my image?
Thank you so much!
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