Color correction in 6S processing?

[Panji Brotoisworo]

Hi,

I noticed in the RSGISLib that the colors are slights different compared to my 6S output. Like it is more vibrant compared to my output and the reference Landsat 8 data.

Is there additional processing when processing BOA data with RSGISLib?

Thanks,

Panji

[Peter Bunting]

Hi Panji, 

ARCSI does not allow for negative reflectance values, it sets the values at 1 (assuming a gain of 1000 or 10000; i.e., 0.01% or 0.001% reflectance). Your histogram has some negative values and therefore this will impact the stretch of the statistics hence the difference in how the images appear. If you define the same stretch statistics for your result and the ARCSI result they will probably look quite similar. 

Depending on what options you have used when you ran ARCSI you may have also applied a topographic correction as well but the image you have included doesn’t look like it has much relieve. 

Best wishes, 

Pete 

--
You received this message because you are subscribed to the Google Groups "RSGISLib Support" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rsgislib-suppo...@googlegroups.com.
To view this discussion on the web, visit https://groups.google.com/d/msgid/rsgislib-support/45dfb410-1e31-47dc-9ba7-c5201b0eadf5n%40googlegroups.com.
<index.png>

[Panji Brotoisworo]

Hi Pete,

Thank you for the quick clarification. Yes I think the presence of water might be affecting the BOA values. This is a relatively flat coastal region.

Thanks,

Panji