is there a way to extract image information in text format?

If you have rendered images you can use pvalue to extract pixel data. Make
sure you use rpict -i if you what illuminance instead of luminance values.
Or you can use rtrace -I to generate illuminance data for a grid of points.


On Mon, Jul 1, 2013 at 5:33 AM, Chien Si Harriman <>wrote:

Hi there-

I work in the architecture field and I'm interested in just processing the
raw data that radiance generates instead of looking at images that might be
generated. I want to build my own spatial mapping of illuminance values in
another visualization tool. Sorry for the newbie question!

How would I do that? Can anyone lend some hints of where I would look to
see this, files, etc?


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