Tactus 360
Posts: 1228
Location: Tynset, Norway
Registered: 2 Sep 2010
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Re: HDR for Dummies
Posted: 3 May 2010 at 14:07 GMT
updated: 2 Sep 2010 at 20:27 GMT
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Not quite sure what you mean, Hans.
I have flattened the psd layers, if that is what you are getting at, and saved it as a tiff file before doing anything editorial. Am I missing something along the way.
It is not just a line, but a difference between light and shade that is so prevelant.
Jon
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Tactus 360
Posts: 1228
Location: Tynset, Norway
Registered: 2 Sep 2010
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Re: HDR for Dummies
Posted: 4 May 2010 at 5:43 GMT
updated: 2 Sep 2010 at 20:27 GMT
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Bump
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Tactus 360
Posts: 1228
Location: Tynset, Norway
Registered: 2 Sep 2010
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Re: HDR for Dummies
Posted: 4 May 2010 at 8:20 GMT
updated: 2 Sep 2010 at 20:27 GMT
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It seems to me that the problem occurs with the gaussian blur stage.
I have bumped this and had only one reply. Perhaps there are only a few who have used this technique . . .
Perhaps people just can't be bothered to answer.
Jon
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Guest
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Re: HDR for Dummies
Posted: 4 May 2010 at 8:36 GMT
updated: 14 Mar 2011 at 16:13 GMT
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Don't you look at me like that!
I have no experience whatsoever with HDR!
I read you, but can't offer an answer.
If I could, I would. Good luck.
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Tactus 360
Posts: 1228
Location: Tynset, Norway
Registered: 2 Sep 2010
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Re: HDR for Dummies
Posted: 4 May 2010 at 8:41 GMT
updated: 2 Sep 2010 at 20:27 GMT
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I'm not looking any anyone like anything!
It is just that I am certain I am not the only one who wants to benefit from this technique and I am certain that I am not the only one who is using it.
What I do need to know is if anyone has found similar problems and managed to get around them. I am certain that they are out there . . .
And I am certain that they have read this thread!
Jon
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Re: HDR for Dummies
Posted: 4 May 2010 at 9:07 GMT
updated: 14 Mar 2011 at 16:13 GMT
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Mathrafal said: I'm not looking any anyone like anything!
I know... just my way of showing support for your request to be answered. I try to learn by reading through everything that I find time to read... (and then I have a beer and forget it all again ... I guess)...
It can be frustrating not having a response to questions one simply knows that are common knowledge by others....
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Hans Nyberg
Posts: 2760
Location: Denmark
Registered: 28 Aug 2005
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Re: HDR for Dummies
Posted: 4 May 2010 at 9:25 GMT
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Jon
You better provide an example.
If I understand what you get it is an over the 360 wrap problem.
This normally happens if you do some hard optimizing like Shadow-highlight on a full 360 panorama which has not been flattened.
Its a long time since I used Jooks action but as far as I remember it copies your original layer first and at last flattens it all.
If you have used a panorama directly from PTGui it is as default a layer (not flattened) and this will give you the problem as adjustments like this does not work over the 360 wrap.
Hans
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: HDR for Dummies
Posted: 4 May 2010 at 14:02 GMT
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Jon
The example in the Jook Leung's (spelling?) HDR for Dummies show it being applied to an Equirectangular Projection.
So I would assume you can apply it to one without getting the line at the wrap around.
I may have time to try it on a tour I'm doing today and let you know.
Doug Aurand
Albuquerque, NM
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Tactus 360
Posts: 1228
Location: Tynset, Norway
Registered: 2 Sep 2010
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Re: HDR for Dummies
Posted: 4 May 2010 at 14:16 GMT
updated: 2 Sep 2010 at 20:27 GMT
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It seems to occur often, using a flattened psd generated in PTG.
I have found that if I offset the image and then use Leung's method, then the problem doesn't occur, although I can think of no reason why this should be the problem!
Doug, please let me know how you get on with that.
Jon
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: HDR for Dummies
Posted: 4 May 2010 at 15:52 GMT
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Jon
I got a very subtle shift in brightness at the wrap around
I haven't been using the HDR for Dummies much for virtual images, mostly stills and then only occasionaly.
I'm getting good results using both blending functions in Photomatix and then combining those 2 images.
But I tried the HDR for Dummies method on a source image and got a much better view out the windows, more detail & more color
What I used was a source image made by blending 7-8 photos with the Exposure Fusion function. This gives me really great natural colors and better sharpness than the HDR/Tone Mapping function, but the views out bright windows are pretty blown out, though not as bad as a single shot.
I took that image and the 9th bracketed image (-6 EV) and followed the HDR for Dummies process, making some slight variations in the blending percentages
The view out the windows really improved.
When I use the Exposure Fusion function I set the Shadow, Saturation and Midtone sliders all at +2.5 for a set of bracketed image from +2 to -5 or -6EV
Hope that helps
Doug Aurand
Albuquerque, NM
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Tim Eastman
Posts: 126
Location:
Registered: 13 Nov 2006
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Re: HDR for Dummies
Posted: 4 May 2010 at 16:27 GMT
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More relating to Doug's observation about blown out windows with fusion, I have tried taking the fused image with blown out windows and using a luminosity mask with the shot for outside light ( darker ) as the top layer. Pretty quick and seems to work pretty well. Others have better luck fusing:
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: HDR for Dummies
Posted: 4 May 2010 at 16:37 GMT
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Tim
That looks really good
I'm not quite getting your process, would you elaborate?
Doug Aurand
Albuquerque, NM
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Tim Eastman
Posts: 126
Location:
Registered: 13 Nov 2006
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Doug Aurand
Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
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Re: HDR for Dummies
Posted: 4 May 2010 at 17:43 GMT
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Tim
Your's looks pretty nice.
All that brite glass and the dark floor and window frames must have been a challenge
Doug Aurand
Albuquerque, NM
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