An efficient approach to smile detection
Author:
- 1 March 2011
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 759-764
Abstract
Smile detection in real-life face images is an interesting problem with many potential applications. This paper presents an efficient approach to smile detection for face images captured in real-world unconstrained scenarios. In our approach, the pixel intensities in the gray-scale face image are compared, and the intensity differences are used as features. We adopt Adaboost to choose and combine intensity differences (based weak classifiers) to form a strong classifier for smile detection. With the simple features, the detection could be very fast. Our approach achieves 85% accuracy in smile detection by examining 20 pairs of pixel difference and 88% accuracy with 100 pairs of pixel comparison. We match the accuracy of Gabor features based SVM by examining as few as 350 pairs of pixel difference.Keywords
This publication has 25 references indexed in Scilit:
- Toward Practical Smile DetectionIEEE Transactions on Pattern Analysis and Machine Intelligence, 2009
- Machine Analysis of Facial Expressions2007
- Dynamics of facial expression extracted automatically from videoImage and Vision Computing, 2006
- Illumination compensation and normalization for robust face recognition using discrete cosine transform in logarithm domainIEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics), 2006
- Rapid object detection using a boosted cascade of simple features2005
- Automatic analysis and recognition of brow actions and head motion in spontaneous facial behavior2005
- Smile and laughter recognition using speech processing and face recognition from conversation video2005
- Facial expression recognition using fisher weight maps2004
- Automatic classification of single facial imagesIEEE Transactions on Pattern Analysis and Machine Intelligence, 1999
- Properties and performance of a center/surround retinexIEEE Transactions on Image Processing, 1997