Talk:Hough transform
PNG Image
I have a small png file available (320x240)to use with this task, created with Inkscape, but I don't know how to upload it to the site. --Rldrenth 21:01, 21 January 2010 (UTC)
- Choose “Upload file” in the “toolbox” sidebar, or by any other means go to Special:Upload. —Kevin Reid 21:25, 21 January 2010 (UTC)
- Thanks. --Rldrenth 22:20, 21 January 2010 (UTC)
- I had to replace that image; it was done with a transparent background rather than a white one, which is highly unhelpful for this task. –Donal Fellows 00:02, 22 January 2010 (UTC)
Expand To Print Peaks
Should we expand the scope so the program to determine the location of peaks in the transformed image and then print then r & theta that correspond to the lines? --Rldrenth 21:01, 21 January 2010 (UTC)
- Probably better done as another task that builds on top of this one as locating the peaks is not part of the Hough transform itself. –Donal Fellows 00:02, 22 January 2010 (UTC)
I think I am missing something
How is this useful? If I try and implement this, how can I tell if I have implemented it correctly? I look at the description of the task, and then I look at that result image and I look at the references and I feel like I am missing something. --Rdm 15:37, 19 May 2010 (UTC)
- Being a type of transform, I suppose I'd try to use it as part of image fingerprinting. Just a rough idea, one could run the transform, find the median value M, max everything there and above M, drop everything below M, find center points and store their relative positions. (I'd probably go back and adjust M until I had a certain fixed number of center points, or as close to it as possible.) --Michael Mol 18:22, 19 May 2010 (UTC)
I must be missing something. Is there a reason the tcl implementation (the only one at this time) is looping theta through two complete circles? --Coderjoe 17:04, 22 July 2010 (UTC)
Semantic MediaWiki
I'm going to use this task as a guinea pig for the new Semantic MediaWiki features. --Michael Mol 10:07, 27 July 2010 (UTC)