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atmospheric correction - output
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Hi again!

I have tried to use the C2R processor on a level 1 MERIS image, using the default parameters.
However, the result looks very strange. I also tried to use the SMAC processor with default parameters
on the same image, but the result then looked like colorful noise. Am I missing something?

I attach the original image, and the results of the two processings (all with colors set to bands 13, 5, 1).

Thanks again for the help!

Øystein
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Attachments: ladoga_0404.png (870.8k), ladoga_C2R_0404.png (186.3k), ladoga_SMAC_0404.png (256.5k)
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RE: atmospheric correction - output
8/31/11 10:02 AM as a reply to Øystein Rudjord.
Do the individual bands also look strange? May be you have to readjust the colourings.
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RE: atmospheric correction - output
8/31/11 11:53 AM as a reply to Ralf Quast.
Thanks for the reply!

The individual bands look pretty much the same. For the SMAC image it seems as if the
lake surface is completely homogeneous (just a sharp spike in the histogram), containing no information
about the ice. This is unfortunate, since I am interested in the state of the lake surface (whether it is ice
free or covered by ice/snow). Does SMAC mask out lakes?

Thanks again!

Øystein
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RE: atmospheric correction - output
Answer Answer (Unmark)
9/1/11 10:23 AM as a reply to Øystein Rudjord.
I think i found the problem. The default bitmask excludes the lake and
a lot of the image in general. I removed the "and not l1_flags.BRIGHT", and added some
"or water" and such, and now the output looks better.

Thanks a lot for your help!

Øystein
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RE: atmospheric correction - output
9/1/11 10:56 AM as a reply to Øystein Rudjord.
You're welcome!
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