Fig. 5
From: Eye-blink detection system for human–computer interaction

Result of face detection using Haar-like masks and cascade of boosted tree classifiers [photo taken by Adam Kozłowski, Medical Electronics Division, 2006]
From: Eye-blink detection system for human–computer interaction

Result of face detection using Haar-like masks and cascade of boosted tree classifiers [photo taken by Adam Kozłowski, Medical Electronics Division, 2006]