RGB to IHS

[Elbruno]

You can use Edit>Colors>Levels and fix the histogram min max to 0 to 255.

[Haowyr]

Ok thanks, I just missed the last step!

[Elbruno]

Did you get a get a good result?

[Haowyr]

Nothing as great as yours for now, probably cause the scans I use are already well colored enough. But I might be running a new test this afternoon on a cloud with darker parts. Will post if the results are interesting.

Question for Daniel: in order to automate the process, is there a way to get the max and min value of a SF with the command line version? And export the rgb values as SF? I cannot find anything in the wiki for now :)

[daniel]

Nope ;)

[Haowyr]

Ok, you couldn't make it any clearer xD Thanks

[Haowyr]

Here is the result of the project I was talking about



As you can see, some points have "funny" color because Cyclone couldn't give it a true color, so it gives a "pastel" color which is higly enhanced by your method. But for the main part of the cloud, it worked pretty well on this project.

[daniel]

Can you show us the cloud before applying the filter?

[Haowyr]

You're right Daniel, I made a quick report yesterday cause I was kinda in a hurry. Now some more detailed images







First about the condition those scans were made: very changing sun exposition, some stations are cloudy, others pretty bright, and as the scans were full (360°) there are some part that were made against the sun light. All those parameters created some bad exposition/coloring, as we can notice in the first image but the method smoothen them, the only thing is that it made the crops at the bottom part quite darker than expected.

On the 2 others we can see the 2 parts I exposed yesterday:
- Very dark parts at the beginning and way clearer thanks to this method
- The "uncolored" points have very unnatural colors

[Elbruno]

Nice, so you are getting some good results.

Daniel maybe this method could be implemented in CC, couldnt it? XD