How to get an ordered list of coordinates of a curve?

[Chris Colbert]

Read the opencv docs for the scikits.image opencv bindings to see what is
available:
http://stefanv.github.com/scikits.image/api/scikits.image.opencv.html

They bindings for opencv in the scikit do not cover the entirety of the
opencv library. For that, you would need to build and use the Python
bindings developed by the OpenCV group (which are not necessarily compatible
with scikits.image).

To answer your question, what you need to do is write a simple chain coding
algorithm, the details of which can be found in G & W or Jain & Kasturi
Machine Vision.


On Wed, Apr 20, 2011 at 12:12 PM, jip <jeanpatrick.pommier at gmail.com> wrote:

> Hi,
> Given a 2D image of a closed or open curve, as the outline of a binary
> particle or a skeleton,I am wondering how to get an order list of the pixels
> coordinates (I found something in the opencv documentation
> <http://opencv.willowgarage.com/documentation/python/imgproc_structural_analysis_and_shape_descriptors.html?highlight=findcontours#FindContours>,
> but I am unable to call fincontours from python. For som reasons, I write
> import opencv then if I try opencv.findcontour, findcontour is not available
> in the  list of my python ide<https://picasaweb.google.com/100950875858888510591/Spyder#5591405906862620322>(
> spyder <http://packages.python.org/spyder/>); I hope I am clear )
>
> Thanks for your advice.
>
> Jean-Patrick
>
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