Posted by
Fleur Longuetaud on
Aug 22, 2005; 10:04am
URL: http://imagej.273.s1.nabble.com/linear-Hough-transform-tp3690661p3690665.html
Dear Dimiter,
I'm also interested in the linear Hough Transform.
By example, if I have four lines to detect in an image and I want their
parameters (r, thêta), the Hough tranform gives me these parameters, no ?
Is it possible with a Sobel operator to easily estimate the line
parameters ?
Best regards,
Fleur
Prodanov, D. (FYS) a écrit :
>Dear Martha,
>
>Why don't you try conventional edge-detection with liner filters ( say Sobel)? It
>is already implemented in ImageJ. I am not sure how the Hough transform handles images with
>degraded geometric forms (e.g. noisy images). The other thing you can try is to
>threshold the images and then skeletonize them.
>
>best regards
>
>Dimiter
>
>Date: Fri, 19 Aug 2005 12:44:48 -0700
>From: Martha Narro <
[hidden email]>
>Subject: linear Hough transform
>
>Hello All,
>
>I need to detect faint linear signal (fine processes on neurons) in images.
>I wanted to try using a linear Hough transform. In the listserv archives a
>"Linear_Hough_Transform_.class plugin" is mentioned, but I can not find it.
>Can someone tell me where it is (the source code)? If the source code for
>this plugin is not available, I wondered if someone could tell me if it
>would be relatively easy to convert the Hough Circles plugin to detect
>lines or if that would be a bad way to go about things.
>
>Thanks,
>Martha Narro
>
>
>
>
--
Fleur LONGUETAUD
Centre INRA de Nancy
EQUIPE QUALITE DES BOIS
Laboratoire d'Etude des Ressources Forêt-Bois
UMR INRA-ENGREF
F-54280 CHAMPENOUX (France)
http://www.nancy.inra.fr/lerfob/