rawtherapee.com

[Fer]

Me, I don't like the output from enfuse.
Too much halos, just look at the white truck.

[DrSlony]

I forgot to mention one thing with that digiKam's enfuse preview: in the original result the clouds were less bright and more saturated with blue, so I decided to only use the enfused part of the buildings and keep the original clouds. Sorry for not mentioning this earlier, but I don't think it makes a big difference regarding the topic being discussed: your algorithm. The point is that this image is a great test image (I believe I specifically had you in mind, Ben, when I shot it) and digiKam's enfuse did a great job overall, better than what I could come up with using command-line vanilla enfuse.

Someone named Mickey sent me his version of my photo, and the results are very impressive, no halos at all! You can post them here and explain what you did, whether it was in RT or outside.

[mmickey]

Here are the two versions, a natural one and an "enhanced" one...





It is done outside of rawtherapee in my development version of dlRaw-preview... the workflow to get such results is developed by myself. The plan is to publish it as a complete program, once it is "final".

greets mike

[ben_pcc]

Not working very hard due to being busy with other things, but I'm happy with this so far:

Without:

http://web.cecs.pdx.edu/~ben_s/Linked/RTTest01/0072-1.jpg

With (takes extra 20 s):

http://web.cecs.pdx.edu/~ben_s/Linked/RTTest01/0072.jpg


My favorite part is how you can actually see the car tires as more then flat blackness. This is a great test image, thanks for thinking of me :->

The math framework is solid but there's so many ways to apply it. Sadly, I had to tweak more then one parameter to make it work nice on this image. Though those settings work good on most images I tried it on.

I slowed it down a little with my newer additions but there's still one more trick to speed it up (preconditioning) I haven't properly done yet.

[paul.matthijsse]

Here's my version. In RT I made five versions, going from dark to very light (16-bit tif). Then i ran enfuse. The resulting photo (still way too dark) was corrected in Digikam (autoexp, curves, vivid colors). Then I did Digikams local contrast (yep, 2nd time that enfuse works here!), some sharpening and downsizing, saved as 8-bit jpg.

[eduperez]

[paul.matthijsse]

Thanks! Actually quite close to DrSlony's photo, but without the halos (as far as I can see).

[ben_pcc]

Ok. I did some more work on it over last weekend.

As usual, I'm not applying a tone curve exposure adjustment, or anything else like that so that you see only the effect of the processing I'm working on. The output can be made more visually appealing by adding a curve after it which starts steep.

This processed with RT without anything unusual

This processed with RT with dynamic range compression

Full size you don't see much, except more contrast in the clouds and less contrast elsewhere. Some 100% crops (left, without; right, with) show more items of interest:







I recast the code as standard C when I realized it was almost already that way.

[mmickey]

[paul.matthijsse]

Hello Mike, is this supposed to work on Gimp 2.7.1 as well?

I compiled the source and copied the resulting drc program and your Python script to the plug-ins folder of Gimp, but your script does not show up under the Filter menu. Same when I copy the two files to the scripts folder.

The command line version works, but it returns a b&w image. Comments in the source code indicate that this is intended. Now what am I supposed to do with this, merge it in Gimp with the original tiff, or what?

Thanks for reading (and for writing your wrapper of course!).

Regards, Paul.

[mmickey]

[paul.matthijsse]

Hello Mike,

No it doesn't work. It is supposed to be under Filters - MM-Filters, isn't it? I don't have this entry.

I copied the two files to /home/user/.gimp-2.7/plug-ins. No luck. Also copied them to /usr/lib/gimp/2.0/plug-ins, no luck again...

Btw. Ubuntu 9.10 32-bit, libtiff and libtiff-dev installed.

[mmickey]

[paul.matthijsse]

yes, both are executable. perhaps I screwed up my gimp...

[mmickey]