-
-
Notifications
You must be signed in to change notification settings - Fork 246
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Why are TOA images used instead of L2 images (Surface reflectance)? #349
Comments
hi @fmartinp , are you referring to Sentinel-2? |
Hi @kvos, Actually, I was referring for Landsat and Sentinel-2. I see your point about the temporal depth. Even Sentinel-2 L2 products start in 2017 instead of 2015 as for TOA products. From your answer, I understand that you took the decision of using TOA products in order to maximise the time span. Is that correct? Best regards. |
yes that's correct! |
Thanks for the clarification! I believe that it would be interesting to compare the coastline results between TOA and Surface Reflectance (SR) in order to see if there is a significant benefit in using SR. Probably, I will try it for a small area, although my results will not be very relevant since I am not familiar with the classification algorithms. So, I will use the trained neural network as provided in your repository. Since the NN is trained with the TOA images, perhaps does not work as good as it could be if trained with SR. I will post some results if I get the time for that test. Regards. |
thanks @fmartinp for looking into this, should be interesting. |
Congratulations for the toolbox.
I would like to ask you why you decided to use Top of Atmosphere images instead of the atmosphere corrected images (L2 products - surface reflectance).
Thanks in advance.
The text was updated successfully, but these errors were encountered: