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Re: Classification of objects in 2D image [message #22992 is a reply to message #22764]

Mon, 18 December 2000 17:46

Ben Tupper
Messages: 186
Registered: August 1999

Senior Member

Hello,

Yes, Sobel filters and a lengthy list of other techniques are used. Which tool to use depends upon the
quality of you image (signal/noise) and what you hope to pull out of the image. I have been astounded
by the number of different techniques used (most of which sail right over me.) In this case, it sounds
to me like Nobert has the image filtered to the point where features of interest stand out from the
background. Now what is needed is a routine to make pretty much standard measurements of features size,
orientation relative to horizontal, etc. Of course, I could have missed the boat and misread Nobert's
needs.

Ben

Paul van Delst wrote:

>
>
> I thought that's what Sobel filters were for? Finding edges of features in images and such. An image
> consisting of crystals or crystal aggregates/clumps on a uniform background should show up well
> under edge enhancement.
>
> paulv
>
> --
> Paul van Delst Ph: (301) 763-8000 x7274
> CIMSS @ NOAA/NCEP Fax: (301) 763-8545
> Rm.207, 5200 Auth Rd. Email: pvandelst@ncep.noaa.gov
> Camp Springs MD 20746

--
Ben Tupper
248 Lower Round Pond Road
POB 106
Bristol, ME 04539

Tel: (207) 563-1048
Email: PemaquidRiver@tidewater.net

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[Message index]

		Classification of objects in 2D image By: hahn on Fri, 01 December 2000 00:00
		Re: Classification of objects in 2D image By: Ben Tupper on Mon, 18 December 2000 17:46
		Re: Classification of objects in 2D image By: Paul van Delst on Mon, 18 December 2000 09:04
		Re: Classification of objects in 2D image By: Ben Tupper on Mon, 18 December 2000 06:33
		Re: Classification of objects in 2D image By: hahn on Fri, 15 December 2000 06:24

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