This is a WIP scene that has remained in limbo for up to a year. In the mean 
time, I had discussions about radiosity with Hildur Kolbrun, and now 
recently through the work of Clipka the radiosity issue is alive again.

I decided to rerender the scene with what I had learned. This is the result. 
I am rather satisfied, especially when compared with older renders. Lighting 
is provided by an area_light and the ambient setting of the diffuser screen 
below the ceiling. WinXP with MegaPov.

The radiosity settings used:
    radiosity {
      #if (MPov)
        adaptive 1
      #end
      brightness       1.0
      count            100
      error_bound      0.15
      gray_threshold   0.0
      low_error_factor 0.2
      minimum_reuse    0.015
      nearest_count    10
      recursion_limit  1
      adc_bailout      0.005
      max_sample       0.5
      media            off
      normal           off
      always_sample    1

      pretrace_start   0.08
      pretrace_end     0.005
    }

Thomas

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