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Re: thresholding image [message #91463 is a reply to message #91458]

Thu, 16 July 2015 16:47

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Craig Markwardt writes:

> It's probably best to start with an internet search for image thresholding. There are lots of good resources on-line already.
>
> As for how to choose the threshold value... well that depends on what you are trying to achieve. It's not always an easy choice. You may have to do statistical analysis on the image, or have other information from different sources which informs your decision.

cgStretch from the Coyote Library will allow you to see a histogram of
your image and apply the threshold interactively. It is a good way to
explore your image data and see the results of various threshold values.

Cheers,

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

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[Message index]

		thresholding image By: Shaktivel Pillai on Thu, 16 July 2015 04:09
		Re: thresholding image By: Craig Markwardt on Thu, 16 July 2015 11:58
		Re: thresholding image By: David Fanning on Thu, 16 July 2015 16:47

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