Algorithm to Break Visual CAPTCHA.
Anjali Avinash ChandavaleAshok M. SapkalRajesh M. JalnekarPublished in: ICETET (2009)
Keyphrases
- improved algorithm
- preprocessing
- experimental evaluation
- recognition algorithm
- dynamic programming
- detection algorithm
- computational cost
- cost function
- times faster
- significant improvement
- computationally efficient
- experimental study
- k means
- selection algorithm
- single pass
- learning algorithm
- similarity measure
- matching algorithm
- estimation algorithm
- expectation maximization
- np hard
- computational complexity
- optimal solution
- input data
- theoretical analysis
- linear programming
- clustering method
- high accuracy
- mobile robot
- artificial neural networks
- objective function
- bayesian networks