Compute and draw a contour

Hi Thierry,

In what format would you need that contour? A box, an oval, a set of lines?

Mattijs

Quote: thierry@thierryfourni wrote on Sat, 09 February 2008 16:04
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> Hello,
>
> A new (?) topic and question. Does anybody know if there is an
> existing method to compute the single curve / contour containing all
> the objects of a binary image ? I've searched the Examples patches
> and forum, also the cv.jit helps, but I didn't find it.
>
> I put an example image on :
> http://picasaweb.google.com/thierryfournierparis/Jitter
>
> Best,
>
> Thierry
>
> ----------------------------------------
> Thierry Fournier
> http://www.thierryfournier.net
>
>
>
>
>
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So yea.. implementing Graham's algorithm with Jitter objects doesn't seem like a good idea and I don't think someone already wrote an external. You'd have to code your own. Since there are many code examples out there, that looks doable.

Mattijs

many moons ago we used this.built from scratch by Roman K. a talented coder i met.
the idea was based on a remark by Nesa about the possibility of checking collision using alpha masks.
this gives the benefit of working with organic shapes of all forms and shapes, and is very responsive.
the code is java. check it out... and now on youtube (http://www.youtube.com/watch?v=GbMRvKMyNfE).
expand, clean, rinse, use and share.

you need to compile the java, its only source.

the key3.jxf is part of the [ketstone2] subpatch, you can reset it by sending a bang to [send resetKeyst2] or just delete the whole subpatch if you dont need to correct the projection.

attached is key3 and the compiled source

here it is