Trevor Quayle wrote:
>
> as an equally illuminated object gets further from
> the camera, it does not fade (which in reality, it should if direct light
> gets attenuated

No, this is not what happens in reality. The energy arriving
from an object when viewed through a constant space angle stays
the same because the observed area (and energy) on the object
increases when viewed from greater distance. The 1/r^2 attenuation
and increase of observed area cancel each other out. The brightness
(pixel values) of surfaces is not a function of distance.


_____________
Kari Kivisalo

Post a reply to this message