[chbot] Vision processing side project.

Andrew Errington chchrobotics@lists.linuxnut.co.nz
Wed, 23 May 2007 13:33:09 +1200

Hmm.  Robert Moran "The Dracula Diary".  Interesting.

So, is the indicator line in the top right derived from the Hough 
Transform?  Does your demo run in real time (i.e. can you rotate the 
barcode and have the yellow line rotate accordingly)?

The next meeting will be 20 June, and I'd like to see this if it's not too 
much trouble to set up.  Thanks, Carl.

Oh, and I'd recommend including the full URL in your messages, just in case 
one day tinyURL disappears, and to satisfy future archive searches.  I 
think it's fine to use tinyurl (especially since tinyurls generally don't 
get split by line breaks), but I think we should have full URL or full + 
tiny URL, but not tinyurl on its own.

Best wishes,


On Tue, 22 May 2007 23:55, you wrote:
> Hi Team.
> I've been doing a lot of study on computer vision and one of the things
> I've been reading up on is a bit of maths called "the hough transform".
> Basically it can be used to detect the position and orientation of lines
> in an image.
> As an example, I'm working on some code for barcodes via a webcam.
> The image here: http://tinyurl.com/32k75t shows the work in progress app
> for doing this.
> The top right shows the barcode position and angle detected from the
> webcam input.
> The bottom right picture is the "hough space". Bright points correspond
> to the stronger sets of lines.
> I'd be happy to demo this stuff at the next meeting if people are
> interested.
> Cheers
> CR
> _______________________________________________
> Chchrobotics mailing list
> Chchrobotics@lists.linuxnut.co.nz
> http://lists.ourshack.com/mailman/listinfo/chchrobotics