I have a question that perhaps originates from my wrong understanding of Radiance rendered images. I would be grateful, if you take time to read the following and share your ideas with me:
While generating rpict images of a scene without any light source other than sky, I realised that even if the external radiation is very low (for example with a global horizontal radiation of 4 W/m2 at an early morning hour), my scene still looks quite bright.
So, I used wxflasecolor application to make sure that the luminance values were rightly very low. And in fact the application allows me to change the luminance range to make the scene darker or brighter.
Well, this finding surprised me, because I expected that Radiance rendered images resemble the “actual perception” of the space in terms of brightness. But apparently, the rendered images are smilar to a false color mapping, whose range (and brightness) can be changed to get the desirable/informative appearance. Do I understand this correctly? If so, do you have any recommendations as to how one can get closer to the “actual perception” of the space? For example, with which range of luminace? Or is it altogether a wrong expectation from Radiance?