Re: [SIP-devel] edge detection

[Ricardo F. <rf...@if...>]

On Thu, 5 Dec 2002, Vasileios Zografos wrote:

> :) Well maybe mine will turn out to be faster. I will see....
>
> By the way...in general would you rather SIP has its own functions or
> that it uses other from other progs? Like ImageMagick and Gimp?
> Let me know
>

I prefer the most convenient.  A good external library is generally
preferred.  Then we developers don't need to maintain too much code.  But no
problem if you implement it.  Sometimes it is more convenient to implement
things ourselves.  What is MOST important is to provide a good interface to
the end-user. This way the implementation may change later with minimal
headaches.

But to be sincere, I would use the Canny edge detector from the Gandalf library:
	gandalf-library.sf.net

This way we learn to use that powerful library for many other functions too.
That library is way better than ImageMagick or Gimp for computer vision. In the
future I'd like to reshape SIP's C core to use Gandalf's framework (image
struct, error treatment, etc.).

But you may do what you desire. As long as you come up with a working Canny
edge detector, that will already be great.

Ricardo.

--
  Ricardo Fabbri
  Cybernetic Vision Research Group - USP
  http://cyvision.if.sc.usp.br/~rfabbri