[vtkusers] Intelligent Thresholding

[Alejandro Escobar Castano]

I have a question about threshold.  I´m processing a series of images of
people wearing 3d glases, but the light and background changes from image
to image.  I´m using a thershold in the channels to get only the lens of
the glasses.  The question is if there is a way to calculate the threshold
criterion so that it works for every picture and not only in one.  Getting
information from the picture to calculate the number for the
ThresholdByUpper.
thanks
Alejandro Escobar
al-escob at uniandes.edu.co
alejandroescobar at cable.net.co