AFAIK, Canny processes all-directional gradients. To catch the horz edges
you'd need to modify it to take into consideration only Y-direction
gradients.
Rgds,
Andrew
> Horizontal Edge detection using Canny
> Posted by: "Arijit Biswas" arijit17@... arijit17
> Date: Wed Oct 14, 2009 4:35 am ((PDT))
>
> Hi all:
>
> I want to use the Canny edge detector for detecting horizontal edges/lines
only.
> Is it possible to do that?
> Which are the most important tuning parameters to make it work best for this
purpose?
> I want it to work consistently well for all the images.
>
> My questions may sound too easy, but I'm an audio/speech processing guy
:-)
>
> Best Regards,
> ~Arijit
>