Integrating 3D models with photography
Interested in integrating your 3D work with the real world? This might help
#
1
04-10-2008
, 02:51 AM
Registered User
Join Date: Oct 2007
Join Date: Oct 2007
Location: IL
Posts: 738
More Rendering Questions
*What do I use Gamma for? What is Gamma correction?
Thanks in advance,
Benny
When in doubt, delete history and freeze transformations.
My latest snake game
(Requires DirectX9 SDK and Framework)
#
2
04-10-2008
, 04:17 AM
Moderator
Join Date: May 2003
Join Date: May 2003
Location: London
Posts: 1,001
. Gamma correction is used to convert rgb linier space into an digital video signal. The gamma helps keep the color space as expected.
Practically though in CG it can be used as a function that will increace or decrece brightness in the midrange values of an image while leaving darks dark and lights light.
A gamma correction node will convert hsv color space to rgb space.
Gamma has associations with HDRI as well, since hdri is in linier space and not made for viewing a tone mapper can basically be used to bring the range into viewable space, using gamma correction as a controlling function.
Mental ray supports a per pixel and lens or sample based tone mapper.
Hope that helps.
#
3
04-10-2008
, 04:23 AM
Registered User
Join Date: Oct 2007
Join Date: Oct 2007
Location: IL
Posts: 738
Benny
When in doubt, delete history and freeze transformations.
My latest snake game
(Requires DirectX9 SDK and Framework)
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