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Segmentation [message #2250]

Tue, 14 June 1994 14:17

jun
Messages: 9
Registered: June 1994

Junior Member

Does anyone know if there is some kind of segmentation program written in IDL?
Eg. Bayes test, Quadtree, and etc.

Thanks.

jun@eureka.columbia.edu

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Re: segmentation [message #13899 is a reply to message #2250]

Wed, 06 January 1999 00:00

Jens Gayko
Messages: 2
Registered: June 1998

Junior Member

Hi Jonas

"Jonas" <jonas_2@hotmail.com> writes:
>
> Hi y'all
> I'd like to perform some segmetation in an image. Have someone written a
> nice procedure (I know you have) for segmentation of a structure
> superimposed on a backgruond with varying intensity.

This is a hard problem in computer-vision sciences. This is perhaps
the reason why nobody can give you an satisfying answer.
If you have an unstructured backround you can use threshold-operations
on the (maybe filtered) image. If you have structured background you
have to use additional information (e.g. texture-based features,
motion, colour-features,... ).

greetings - Jens

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Re: segmentation [message #14049 is a reply to message #2250]

Mon, 18 January 1999 00:00

L. Charles Burgwardt is currently offline

L. Charles Burgwardt
Messages: 4
Registered: January 1999

Junior Member

I just used the LABEL_REGION function included in IDL with good success. My
background had some variation in brightness but was distinctly differenct in
the image histogram, so thresholding was easy. If you can get good
thresholding, label_region may work for you. Read the help page on the
function.

Charlie Burgwardt

Jonas wrote:

> Hi y'all
> I'd like to perform some segmetation in an image. Have someone written a
> nice procedure (I know you have) for segmentation of a structure
> superimposed on a backgruond with varying intensity.
>
> greetings
> Jonas

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