Dear all
I hope you can assist me on this matter.
Currently, I am working to generate a land cover map of my study site at
the north-east end of the Venezuelan Andes. For this I am planning to
use 3 Spot 2 images and 2 Spot 5 images. I need your advice regarding
radiometric correction, before joining all this images in a mosaic for
the supervised classification.
The 3 Spot 2 images are from the same date and contiguous sites, so in
principle I don't think I need to run the correction for this ones. Am I
right??.
Then, I need to correct the 2 Spot 5 images based one of the Spot 2
images, but when I try to do this process using the ENVI 4.5 software,
the colour of each image changes completely. Is this caused by the
sensor difference?? How can I then match the radiance of all this images
so I can run the supervised classification??
Finally, should I first correct the base image on its own and then
correct the remaining 4 images based on the product of this process??
Thank you very much in advance!
S
Shaenandhoa García Rangel
PhD candidate
Wildlife Research Group
University of Cambridge
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