Find faces in the image.
faces = detectfaces(im)
The function finds faces in an image.
"Rapid Object Detection using a Boosted Cascade of Simple Features", Paul Viola and Michael J. Jones, IEEE CVPR, 2001.
"An Extended Set of Haar-like Features for Rapid Object Detection", Rainer Lienhart and Jochen Maydt, IEEE ICIP 2002, Vol. 1, pp. 900-903, Sep. 2002.
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