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Journal of Electronic Imaging

Robust smile detection using convolutional neural networks
Author(s): Simone Bianco; Luigi Celona; Raimondo Schettini
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Paper Abstract

We present a fully automated approach for smile detection. Faces are detected using a multiview face detector and aligned and scaled using automatically detected eye locations. Then, we use a convolutional neural network (CNN) to determine whether it is a smiling face or not. To this end, we investigate different shallow CNN architectures that can be trained even when the amount of learning data is limited. We evaluate our complete processing pipeline on the largest publicly available image database for smile detection in an uncontrolled scenario. We investigate the robustness of the method to different kinds of geometric transformations (rotation, translation, and scaling) due to imprecise face localization, and to several kinds of distortions (compression, noise, and blur). To the best of our knowledge, this is the first time that this type of investigation has been performed for smile detection. Experimental results show that our proposal outperforms state-of-the-art methods on both high- and low-quality images.

Paper Details

Date Published: 14 November 2016
PDF: 4 pages
J. Electron. Imag. 25(6) 063002 doi: 10.1117/1.JEI.25.6.063002
Published in: Journal of Electronic Imaging Volume 25, Issue 6
Show Author Affiliations
Simone Bianco, Univ. degli Studi di Milano-Bicocca (Italy)
Luigi Celona, Univ. degli Studi di Milano-Bicocca (Italy)
Raimondo Schettini, Univ. degli Studi di Milano-Bicocca (Italy)

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