ola,

detecting an edge is depending a little bit of the form of the edge,
you can try to compare it to a pattern of a contour
( have a look at hu_compare or pgh_compare ),
or look at the 'fruit detector' example,
based on these :
http://91.121.134.23/dmmdb//contents/4226380025092009008-dl.ogg

( can detect special shapes you are looking for )

saludos,
sevy

Adityo Pratomo wrote:
ola yves,

ookay, i'll try that, even though i did try to go back to pd-extended 0.41-4, and yeah your opencv works :) but i'll try your suggestion anyway :D

Anyway, i Was wondering, what is the best way to implement blob detection on pd? or if I want to detect and track an edge of an object from a camera, what is the best way to do it?

Thank you

Regards,

didit

On Mon, Oct 4, 2010 at 2:23 PM, [email protected] <mailto:[email protected]> <[email protected] <mailto:[email protected]>> wrote:

    ola,

    hum, get sure you've got something here:
    /Library/Frameworks/OpenCV.framework/Headers/

    and that you installed the target pd-extended too in :
    /Applications/Pd-extended.app/Contents/Resources/include/

    it should work then

    saludos,
    sevy


    Adityo Pratomo wrote:

        hi there,

        i was compiling puredata_opencv this morning for a school
        project. however, i got this error while trying to compile it:

        configure: error: you need to install opencv library (libcv)

        i already followed all the sequence of compiling it. I'm on a
        Mac, so I already put the opencv framework on
        /Library/Frameworks folder, and I already downloaded the pd
        0.42.5 and Gem 0.92.3, because i'm using the latest pd-extended.

        any suggestion why is this happening? Or should I just use the
        previous pd-extended so that I can use the available packages
        of puredata_opencv?

        Thank you very much for any help :)

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