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Archive 2009 · HDR Halo Removal -- How?
  
 
Ianlacy
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p.1 #1 · p.1 #1 · HDR Halo Removal -- How?


Hey all,

I'm getting ready to enter this into an art show at work and I really want to get rid of the blasted halo surrounding the train. If someone knows how, that'd be fantastic.


Image 320377 not found





Mar 24, 2009 at 11:21 PM
Nchakos
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p.1 #2 · p.1 #2 · HDR Halo Removal -- How?


duplicate the file...isolate the train and select it.. increase the train size by10% and paste it into the original file this will cover up the halo.
..i would also clone the green tinge of the side window out.. it just dosent match



Mar 25, 2009 at 07:40 PM
Ianlacy
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p.1 #3 · p.1 #3 · HDR Halo Removal -- How?


Hey man, thanks for the tips. I'll give that a try when I get home!


Mar 25, 2009 at 07:42 PM
Dan Jurak
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p.1 #4 · p.1 #4 · HDR Halo Removal -- How?


Ian, it's easier to prevent the halo rather than remove it.

The halo is the result of exaggerating what HDR programs do best, separate the tones.

It is best to go back to the originals, recombine them and then when you do the tonemapping, pull the sliders over until you start getting the halos, then pull them back.

Then process the image. The result won't be as dramatic but you can't have the tonal separation to that great an extent and not have halos. One or the other.

I hope that helps.

Dan



Apr 04, 2009 at 03:30 PM
SJMD
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p.1 #5 · p.1 #5 · HDR Halo Removal -- How?


would love for you to read pulses photograph with the halo removed.

God bless

steve



Apr 05, 2009 at 01:13 AM
fredharris
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p.1 #6 · p.1 #6 · HDR Halo Removal -- How?


Personally, I'd leave the halo in; I think it adds to the effect.



Apr 10, 2009 at 07:58 AM
 

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web52
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p.1 #7 · p.1 #7 · HDR Halo Removal -- How?


One trick I've used in similar situations is to clone from nearby using "darker color". That way it won't clone over the darker train body.
You might bring in one of the original pictures that had some details in those clouds and clone from that onto a separate layer and dial back on the opacity of that layer.
This picture _is_ worthy of entry into a contest. Wish you best.
Bill



Apr 11, 2009 at 07:10 PM
bowfool
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p.1 #8 · p.1 #8 · HDR Halo Removal -- How?


I agree that although we know the halo is an artifact of the processing, sometimes it adds to the image, as in this case.


Feb 21, 2010 at 06:38 PM
Bifurcator
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p.1 #9 · p.1 #9 · HDR Halo Removal -- How?


Dan Jurak wrote:
Ian, it's easier to prevent the halo rather than remove it.

The halo is the result of exaggerating what HDR programs do best, separate the tones.

It is best to go back to the originals, recombine them and then when you do the tonemapping, pull the sliders over until you start getting the halos, then pull them back.

Then process the image. The result won't be as dramatic but you can't have the tonal separation to that great an extent and not have halos. One or the other.

I hope that helps.

Dan



Yup! That's right! Process for tones in the software that tone maps the interim HDR file - NORMALLY without the exaggerations and then for that freak-out "HD-Art" effect use Photoshop's "Shadows/Highlights" plugin which will allow you do to the same thing (even to a common single exposure JPEG) without the halos by setting the Radius appropriately.

Good tip Dan!


Done correctly though I have to add that the result will be just as dramatic - only without the halos.




Feb 23, 2010 at 05:18 PM
Ianlacy
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p.1 #10 · p.1 #10 · HDR Halo Removal -- How?


Haha wow, talk about a resurrected thread. Thanks for the tips!


Feb 23, 2010 at 06:37 PM
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p.1 #11 · p.1 #11 · HDR Halo Removal -- How?





Feb 23, 2010 at 11:27 PM





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