Forum: Poser - OFFICIAL


Subject: HDRI Light Studio

postapulcino opened this issue on Mar 06, 2003 ยท 25 posts


audity posted Thu, 06 March 2003 at 3:40 PM

Hi postalpucino !

it sounds interesting...but I don't understand why you call this application "HDRI light studio".

HDRI (High Dynamic Range Imaging) is an image format that encodes proportionaly the amount of light as floating point number instead of "colors". This is a more accurate physical model as you can have an "infinite" light intensity (from a very weak light source to a bright sunshine). With normal 8 bit low dynamic range image (jpg, bmp, etc...) you're limited to 255 shades for 3 channels (RGB).

Poser's illumination model use low-dynamic range (8 bit) value. Even if you use an HDRI light probe to set the intensity of lights, it will be limited by Poser's 8 bit format. Whatever you'll do, it's impossible to create or use HDR image in Poser.

What you are proposing here is "image based" lighting. This method - used mostly with radiosity rendering engine - has nothing to do HDRI. It's only a global illumination method...

But, hey, image based lighting in Poser is already great !

:) Eric