Can anyone give me an example how to apply a threshold value to an image? (everything above a certain brightness level becomes white, and everything below the level becomes black.)
I was told I should use 256-item mapping table and pass it to the "point" method. But how should the 256-item mapping table look like, if the threshold is 18( found from the histogram) Thank you for any hint. L. > [EMAIL PROTECTED] wrote: > > > I would need to apply a threshold value to the image, where everything > > above a certain brightness level becomes white, and everything below the > > level becomes black. > > How can I do that with PIL? > > create a 256-item mapping table and pass it to the "point" method. > > </F> > > _______________________________________________ > Image-SIG maillist - Image-SIG@python.org > http://mail.python.org/mailman/listinfo/image-sig _______________________________________________ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig