Breaking Visual CAPTCHAs with Naive Pattern Recognition Algorithms.
Jeff YanAhmad Salah El AhmadPublished in: ACSAC (2007)
Keyphrases
- pattern recognition
- learning algorithm
- orders of magnitude
- computational cost
- machine learning algorithms
- computer vision
- image processing
- neural network
- significant improvement
- image analysis
- computer vision algorithms
- visual perception
- recently developed
- theoretical analysis
- computationally efficient
- query processing
- computational complexity
- data structure
- objective function
- high level
- case study
- machine learning