Avatar CAPTCHA: Telling computers and humans apart via face classification.
Darryl D'SouzaPhani C. PolinaRoman V. YampolskiyPublished in: EIT (2012)
Keyphrases
- pattern recognition
- feature space
- support vector machine svm
- text classification
- image classification
- gender recognition
- classification systems
- automatic classification
- feature selection
- support vector machine
- supervised learning
- decision trees
- benchmark datasets
- support vector
- preprocessing
- neural network
- machine learning methods
- pattern classification
- classification method
- classification algorithm
- classification models
- feature extraction
- face images
- classification accuracy
- feature vectors
- human behavior
- machine learning algorithms
- turing test
- learning algorithm
- human faces
- class labels
- computer systems
- feature set
- knn
- active learning
- training set