| Re: Extracting ROI without IDL objects is it possible [message #37719] |
Thu, 22 January 2004 11:20  |
Bruce Bowler
Messages: 128
Registered: September 1998
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Senior Member |
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On Thu, 22 Jan 2004 09:33:32 -0700, David Fanning put fingers to keyboard
and said:
> If you HAD to use CW_DEFROI for some reason (your Internet
> connect to my web page was broken, for example) you could
> use Find_Boundary to recover the points on the boundary of
> your ROI:
>
> http://www.dfanning.com/programs/find_boundary.pro
>
But if his internet connection to your page is down, he can't get to
find_boundary, because it's on your page, which is down...
How's the search for a sabbatical coming :-)
--
+-------------------+--------------------------------------- ------------+
Bruce Bowler | There are more pleasant things to do than beat up
1.207.633.9600 | people. - Muhammad Ali
bbowler@bigelow.org |
+-------------------+--------------------------------------- ------------+
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| Re: Extracting ROI without IDL objects is it possible [message #37727 is a reply to message #37719] |
Thu, 22 January 2004 09:12  |
Nuno Oliveira
Messages: 75
Registered: October 2003
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Member |
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Thanks, there's a lot of stuff for me to read. The question about cw-defroi
is that I don't know if I have time to make my own ROI tool (despite the
fact that I didn't see your tips about it yet)
I'm going to take a look.
Cheers,
Nuno.
"David Fanning" <david@dfanning.com> wrote in message
news:MPG.1a79a946edfa3dc49897ad@news.frii.com...
> Nuno Oliveira writes:
>
>> I'm having a little trouble with extracting ROI with IDL. I'm trying to
make
>> a little application for temporary use while I don't learn how to manage
>> IDLanROI objects.
>
> You will be MILES ahead if you give up on CW_DEFROI and learn
> to write your own ROI tool:
>
> http://www.dfanning.com/widget_tips/line_on_image.html
>
> What you want are the points that describe the ROI polygon,
> not the pixel indices of the pixels inside the ROI.
>
> If you HAD to use CW_DEFROI for some reason (your Internet
> connect to my web page was broken, for example) you could
> use Find_Boundary to recover the points on the boundary of
> your ROI:
>
> http://www.dfanning.com/programs/find_boundary.pro
>
> Then, you could just plot these boundary points with PLOTS
> right on top of your image.
>
> 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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| Re: Extracting ROI without IDL objects is it possible [message #37818 is a reply to message #37719] |
Thu, 22 January 2004 12:17 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Bruce Bowler writes:
> But if his internet connection to your page is down, he can't get to
> find_boundary, because it's on your page, which is down...
Oh, right. I find it's best if I don't write newsgroup
articles while I am right in the middle of a big programming
project. I like the break, but I find the ol' brain slow to
disengage. :-(
> How's the search for a sabbatical coming :-)
Leads are coming in! Let's see, the first one here is
from ... oh, oh, Cleveland!
Well ... that's exotic, all right. :^)
Cheers,
David
P.S. Let's just say if you were looking for a place
to research the loss of manufacturing jobs in the US,
you could do worse than Cleveland. :-)
--
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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