[Radiance-general] image filtering

[Jack de Valpine]

Hey Jelle,

Just a few thoughts here. Explaining rendering systems to clients is 
always difficult. I think that unfortunately clients typically just want 
good looking images and do not neccessarily care how the images is 
"made." However, I think that you are probably on a good track to 
consider the results of a Radiance simulation as a virtual prototype, 
which means something more than just a "rendering." But in order for 
this to hold true, the underlying data, (lighting levels, materials, 
geometry and other fundamental assumptions in the scene) used to 
generate the simulations needs to be "accurate" to some standard 
suitable for the given objective. Filtering an image with tone mapping 
offers one way to view the scene in the image.

-Jack

Jelle Feringa / EZCT Architecture & Design Research wrote:

> Hi all,
>
>  
>
> Currently I'm working on a booklet showing my Radiance work.
>
> Also some of the technicalities of Radiance are discussed.
>
> I have to agree with what 'Rendering with Radiance' states on this 
> topic; its hard to explain precisely what makes Radiance fundamentally 
> different from other rendering solutions. Call me a pretentious prick, 
> but I find it effective in communicating Radiance' value to consider 
> an image a virtual prototype rather than just a rendering. To get this 
> point across, its important to show a potential client the different 
> levels of significance a Radiance rendering has. It all comes down to 
> filtering in the end.
>
> I think its important to explain how a pcond -h image differs from a 
> non-filtered image (well, pfilt)
>
>  
>
> I'm trying to sum up the different levels of information one can 
> extract from a single Radiance image using:
>
>  
>
> Pcond,
>
> Glare,
>
> Falsecolor (nits, Dayfact, lux)
>
>  
>
> Which is basically what one can expect from someone who has reasonable 
> control over Radiance.
>
> Of course, there's lots of more ways of extracting different levels of 
> information from Radiance / a Radiance image.
>
> Speaking for myself, I have been messing around piping rtrace 
> intersections to a .dxf file, showing a beautiful diagram of the way 
> Radiance is computing its light interactions. But I'm not that funky 
> with image filtering.
>
>  
>
> Any suggestions of interesting / original ways of extracting 
> information of a Radiance image?
>
>  
>
>  
>
> Cheers,
>
>  
>
> Jelle.
>
>  
>
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>
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