[Radiance-general] How to get extreme values from a falsecolor image

Guglielmetti, Robert Robert.Guglielmetti at nrel.gov
Wed Feb 5 08:50:35 PST 2014


Hi Vaib,

A couple of things:

Thing One: there is an –a option, which “autoscales” the max value for the scale to peak at the max value found in the image.
Thing Two: yes, you can use pextrem to get the min and max values (in Rr,Rg,Rb) printed to the command line.

- Rob

From: Vaib [mailto:vaibhavjain.co at gmail.com]
Sent: Wednesday, February 05, 2014 9:39 AM
To: Radiance general discussion
Subject: [Radiance-general] How to get extreme values from a falsecolor image

Hello everyone,

Falsecolor's documentation states that "The −e option causes extrema points to be printed on the brightest and darkest pixels of the input picture."

Is there any way to output (not print on image) the extrema values? This could be helpful in appropriately scaling the "scale".

Thank you!

Best regards,
Vaib
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