[Radiance-general] Getting number of pixels for fisheye view

[Thomas Bleicher]

On 28 Jan 2009, at 13:03, Lars O. Grobe wrote:

> This is very similar to what I did with grep, removing all values  
> that have zero luminance, and counting the lines than. I was just  
> not sure if it is really safe to rely on that pixels with zero  
> luminance must be out of the view... But most probably they are, if  
> I do not have a perfect absorber in my scene.

Dump question: can't you work out which pixels are
outside the view area by calculating the vv and vh
of the pixel and comparing that with the value stored
in the image header?

Regards,
Thomas