A Contrario Detection of Faces with a Short Cascade of Classifiers
Jose-Luis Lisani, Silvia Ramis
Jose-Luis Lisani, and Silvia Ramis, A Contrario Detection of Faces with a Short Cascade of Classifiers, Image Processing On Line, 9 (2019), pp. 269–290. https://doi.org/10.5201/ipol.2019.272

Communicated by Gregory Randall
Demo edited by Jose-Luis Lisani

This IPOL article is related to a companion publication in the SIAM Journal on Imaging Sciences:
Jose-Luis Lisani, Silvia Ramis, and Francisco J. Perales “A Contrario Detection of Faces: A Case Example” SIAM Journal on Imaging Sciences, vol. 10, no. 4, pp. 2091-2118, 2017.


The a contrario framework has been successfully used for the detection of lines, contours and other meaningful structures in digital images. In this paper we describe the implementation of an algorithm for face detection published in 2017 by Lisani et al. which applies the a contrario approach to the computation of the detection thresholds of a classical cascade of classifiers. The result is a very short cascade which obtains similar detection rates than a classical (and longer) one at a much lower computational cost.