comp.lang.idl-pvwave archive - RDF feed
type: channel
description: Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
items: Image contours and thresholding
items: Re: Image contours and thresholding

Image contours and thresholding
type: item
description: I'm about to embark on writing a little program that puts up an image, alows the user to outline a section of it, and do some calculations for the pixels in the selected section (e.g. calculate what fraction of the pixels are greater than some threshold) This is obviously a program that someone like David (Fanning) could write in his sleep but I've been away from widgetizing for a few months (how soon they forget !). It probably wouldn't be the worst thing for me to have to do this from scratch but since I'm in a bit of a hurry I thought I'd ask if anybody knows of any programs in any of the available libraries that sound like they do something like this and that I could modify. (David, I checked your web site and nothing seemed all that close to what I need) Thanks for any tips, advice,... -- KY ------------------------------------------------------------ ------- Karl Young Phone: (415) 750-2158 lab UCSF (415) 750-9463 home VA Medical Center, MRS Unit (114M) FAX: (415) 668-2864 4150 Clement Street Email:kyoung@itsa.ucsf.edu San Francisco, CA 94121 ------------------------------------------------------------ -------
creator: Karl Young
date: 1997-10-22T07:00:00-00:00

Re: Image contours and thresholding
type: item
description: Karl Young (kyoung@itsa.ucsf.edu) writes: > I'm about to embark on writing a little program that puts up > an image, alows the user to outline a section of it, and do > some calculations for the pixels in the selected section (e.g. > calculate what fraction of the pixels are greater than some threshold) > This is obviously a program that someone like David (Fanning) > could write in his sleep but I've been away from widgetizing for > a few months (how soon they forget !). It probably wouldn't be > the worst thing for me to have to do this from scratch but since > I'm in a bit of a hurry I thought I'd ask if anybody knows of > any programs in any of the available libraries that sound like > they do something like this and that I could modify. (David, I > checked your web site and nothing seemed all that close to what > I need) Thanks for any tips, advice,... You are not the only one who has accused me of writing programs in my sleep, believe me! :-) In fact some of the nonsense I have had on my web page lately would have been greatly improved if I HAD written it in my sleep. But that's another story... I will tell you that if *I* needed a neat ROI-like tool for medical images I would hot-foot it over to Phil Williams site and have a look at his XDISPLAY program. I think Phil is is the process of updating it from handles to pointers, but it is a very nice tool. I think it will probably do all you need and much more. Here is the URL: http://www.irc.chmcc.org/idl/philsIDL.html Cheers, David ----------------------------------------------------------- David Fanning, Ph.D. Fanning Software Consulting E-Mail: davidf@dfanning.com Phone: 970-221-0438 Coyote's Guide to IDL Programming: http://www.dfanning.com/
creator: davidf
date: 1997-10-22T07:00:00-00:00