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Re: Curve Fitting Question [message #82001 is a reply to message #1309]

Tue, 13 November 2012 15:24

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Mark Piper writes:

> Coincidentally, we're adding an IMAGE_THRESHOLD function in 8.2.2 that implements Otsu's method among other automatic thresholding techniques.

Yes, this Otsu's thresholding function works great. It
didn't have quite as many features as I would have liked,
so I stole the main ideas and wrote up a similar program
that is working very, very well with the data sets I
am working with today. It even picks reasonable
thresholds when the dividing line between pixel
populations is not totally straightforward. Thanks
for bringing it to my attention.

You can find my version of the program here:

http://www.idlcoyote.com/programs/cgotsu_threshold.pro

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Curve Fitting Question By: ftdwh on Tue, 14 September 1993 11:01
		Re: Curve Fitting Question By: David Fanning on Tue, 13 November 2012 15:24
		Re: Curve Fitting Question By: cgguido on Wed, 14 November 2012 06:22
		Re: Curve Fitting Question By: David Fanning on Tue, 20 November 2012 06:22
		Re: Curve Fitting Question By: Mark Piper on Tue, 13 November 2012 08:31
		Re: Curve Fitting Question By: David Fanning on Mon, 12 November 2012 19:40
		Re: Curve Fitting Question By: ben.bighair on Mon, 12 November 2012 18:47
		Re: Curve Fitting Question By: David Fanning on Mon, 12 November 2012 17:23
		Re: Curve Fitting Question By: David Fanning on Mon, 12 November 2012 17:18
		Re: Curve Fitting Question By: Craig Markwardt on Mon, 12 November 2012 15:51
		Re: Curve Fitting Question By: David Fanning on Tue, 20 November 2012 06:58

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