regionprops Very slow on centroid identification

[jeff witz]

Hi,

Thank you all for your answers. finally I use OpenCV to perform the 
real-time computation and still use skimage for the initialisation on my 
real code. 

I've joined a file that allows one to compare the computation we need to 
make. 

There is a basic numpy method, the OpenCV one and the Skimage regionprops 
one. I don't find relevant to include a naive python implementation.

Please note that the values computed for visualization are for illustration 
only and doesn't represent a real experiment.

I Hope it can help to benchmark the future improvement of regionprops.

Best regards  
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