[HDRI] Photosphere 1.6 available

[Gregory J. Ward]

Hi Kirk,

Nice panos!  The color strangeness is just the usual problem related  
to a global tone-mapper like the one in Photosphere.  To preserve  
local color and contrast, you need to use a local tone-mapping  
algorithm.  Unfortunately, I don't have any to offer at the moment.

Erik Reinhard has implemented a bunch (including his own) and put the  
source code on the HDR Imaging book's DVD-ROM if you want to give  
those a try.

-Greg

> From: Kirk Thibault <kthibault at biomechanicsinc.com>
> Date: May 27, 2006 8:14:21 PM PDT
>
> A couple of quick HDR panorama tests, reduced to LDR JPEG:
>
> http://kirkt.smugmug.com/photos/71901716-L.jpg
>
> http://kirkt.smugmug.com/photos/71891370-L.jpg
>
> I didn;t have much time to shoot, so they are little rough, but  
> pretty cool to be able to stitch HDR together.  Greg, how come  
> there is so much color wackiness in the higher dynamic range areas  
> - the colors get way over-saturated and the contrast goes south  
> pretty quickly - I'm guessing that multiple exposures of the HDR  
> with some layer masking and compositing may give better results.  I  
> tried messing with the tone map curve in PShop CS2, but that will  
> take some getting used to.
>
> neat-o!
>
> kirk