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Re: Help with counting irregular shapes on a Black-White Image [message #31913]

Fri, 23 August 2002 15:38

btupper
Messages: 55
Registered: January 2002

Member

On Fri, 23 Aug 2002 12:12:05 -0700, "Huayi Dong" <huayidon@usc.edu>
wrote:

> I have a black-white image (only color available is black and white), and on
> the image there are a number of dots and irregular shapes, what's an
> efficient way for me to calculate the number of dots or irregular shapes?
> Thanks!
>

Hello,

Try using the LABEL_REGION function.

Result = LABEL_REGION( Data [, /ALL_NEIGHBORS] [, /ULONG] )

Be advised that features along the edge of the image will lose the
edge pixels in the returned image.

Ben

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