| Re: ROI application... [message #32332 is a reply to message #32329] |
Wed, 02 October 2002 13:11  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Richard Tyc (richt@sbrc.ca) writes:
> Which tools, functions objects etc could be used to the following image
> processing task:
>
> Highlight a region within an image with a solid color based on a signal
> value range and then create a boundary line around this region (ROI). We
> hope to use IDL to perform what an existing medical workstation does for one
> specific task - highlight a region within a greyscale MRI image (eg. a
> tumour) to generate a boundary curve based on the relative intensity of the
> pixels associated with the ROI.
> Lets say the tumor represented pixel intensity levels of 155-200. If we set
> all pixels in this range to be red, we then need to generate a boundary
> curve outlining this 'red' region.
>
> Could IDLgrROI and LABEL_REGION do this ?
Probably, but it might be slow. If your region is
contiguous, and you want to have a boundary line
around it, then this Find_Boundary program on my
web page works nicely for me. (The Contour command
is another alternative.)
http://ftp.dfanning.com/pub/dfanning/outgoing/misc/find_boun dary.pro
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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