hough ellipse fit inaccurate?

Tue Mar 10 15:20:05 EDT 2015

@Stefan, good idea! I am curious to know whether this solves your problem.

> On Mar 10, 2015, at 2:49 PM, Stéfan van der Walt <stefanv at berkeley.edu> wrote:
> 
> It may be a good idea to upsample your image before doing canny,
> because edges lie in between pixels, and can only be accurately marked
> with enough resolution.
> 
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