Objects, HDR and perception
Posted: 09.01.2007, 12:44
Hi !
There were some discuss on the glow of "non emissives" objects. Some said that it come from the HDR rendering to simulate the light saturation.
I have noticed the fact that the "magnitude amplifier" (the thing that permit to limit the drawing of star according to the magnitude) work only for very far objects (stars and very far non emissives objects) but not for the near objects.
Take any photo of the earth and search for the stars. You won't find any because the earth is very bright in fact. Far more that stars if you are near (and in front off the lighted side of course !). For example, the background of this forum should not be observed as it ^^.
I think something should be done with the computation of the radiance (as it is this light value we render in image simulation). It seem to be well done with far stars, but not with near (non punctual) objects. They shoud saturate a lot (and glow a lot).
PS : I'm sorry for my weird language. English is not my native one.
There were some discuss on the glow of "non emissives" objects. Some said that it come from the HDR rendering to simulate the light saturation.
I have noticed the fact that the "magnitude amplifier" (the thing that permit to limit the drawing of star according to the magnitude) work only for very far objects (stars and very far non emissives objects) but not for the near objects.
Take any photo of the earth and search for the stars. You won't find any because the earth is very bright in fact. Far more that stars if you are near (and in front off the lighted side of course !). For example, the background of this forum should not be observed as it ^^.
I think something should be done with the computation of the radiance (as it is this light value we render in image simulation). It seem to be well done with far stars, but not with near (non punctual) objects. They shoud saturate a lot (and glow a lot).
PS : I'm sorry for my weird language. English is not my native one.
when Chris will work on HDR; actually HDR is not enable in Celestia...