CAPTCHA Recognition Method Based on CNN with Focal Loss.
Zhong WangPeibei ShiPublished in: Complex. (2021)
Keyphrases
- high precision
- pattern recognition
- recognition rate
- high accuracy
- detection method
- cost function
- clustering method
- dynamic programming
- genetic algorithm
- high recognition accuracy
- recognition process
- mutual information
- probabilistic model
- computational cost
- experimental evaluation
- significant improvement
- medical images
- pairwise
- action recognition
- object recognition
- recognition accuracy
- similarity measure
- cellular neural networks
- data sets
- convolutional neural network