Solving substitution ciphers for OCR with a semi-supervised hidden Markov model.
Erik ScharwächterStephan VogelPublished in: ICDAR (2015)
Keyphrases
- hidden markov models
- semi supervised
- text recognition
- markov models
- speech recognition
- semi supervised learning
- markov model
- optical character recognition
- viterbi algorithm
- conditional random fields
- discriminative training
- sequential data
- hidden states
- gesture recognition
- handwritten word recognition
- labeled data
- unsupervised learning
- co training
- automatic speech recognition
- document images
- hidden state
- supervised learning
- kernel density
- machine learning
- unlabeled data
- pairwise