measure the illumination

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Andre Asfar
Andre Asfar 2011-8-21
is there a way to measure the illumination of pixels seeing the pixel information?
http://i53.tinypic.com/9r698o.png this image information is from a gray scale picture
units as LUMEN or LUX?
Thanks in advance

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David Young
David Young 2011-8-21
No, the camera would need to be calibrated if you want absolute values of the illumination. Even relative values depend on the camera's response curve.

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