comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » Re: Image filtering

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Image filtering [message #16096 is a reply to message #16059]

Mon, 28 June 1999 00:00

David Foster
Messages: 341
Registered: January 1996

Senior Member

Robert B. Bohn wrote:
>
> Dear Folks,
>
> I'm trying to do some blob filtering on an 8 bit B&W image (TIFF
> file). The range of the bits is 0-255.
>
> I am trying to clean up the image and remove extraneous black
> spots from white fields and vice-versa. In terms of BLOB filtering,
> I am trying to perform a "close" operation.
>
> Any suggestions how to do this with IDL?
>
> Sincerely,
>
> Bob Bohn

Bob -

Look at the ERODE() and DILATE() functions. You might also have a
look at CONVOL() for more general purpose convolutions.

Dave
--

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~
David S. Foster Univ. of California, San Diego
Programmer/Analyst Brain Image Analysis Laboratory
foster@bial1.ucsd.edu Department of Psychiatry
(619) 622-5892 8950 Via La Jolla Drive, Suite 2240
La Jolla, CA 92037
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~

Report message to a moderator

[Message index]

		Re: Image filtering By: gabriel rodriguez ibe on Wed, 30 June 1999 00:00
		Re: Image filtering By: David Foster on Mon, 28 June 1999 00:00

Previous Topic:	Re: Activating the text window.
Next Topic:	Histogram (was: Mad MAX)

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Oct 09 16:13:23 PDT 2025

Total time taken to generate the page: 1.11828 seconds