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Erosion/Dilation Operators [message #8225]

Mon, 17 February 1997 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Hi,

Does anyone have any practical experience using the erosion
and dilation operators in IDL? I can't make much sense of the
documentation. In particular, I can't figure out what a good
structuring element would be.

I am working with ice flow data. I want to calculate the
size of the ice flows, but first I have to pick them out.
I've fooled around with thresholding, edge operators, etc.,
but in the end the data is still "messy", without clearly
defined boundaries, or with small "artifact" ice flows
inside the larger, definate ice flows. I thought erosion
and dilation would be a good way to clean up the data,
but I can't see how it works exactly.

I would appreciate any and all suggestions.

Thanks,

David

-----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
2642 Bradbury Court, Fort Collins, CO 80521
Phone: 970-221-0438 Fax: 970-221-4762
E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com
-----------------------------------------------------------

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		Erosion/Dilation Operators By: davidf on Mon, 17 February 1997 00:00
		Re: Erosion/Dilation Operators By: Achim Hein on Thu, 20 February 1997 00:00

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