Computer Processing of Line-Drawing Images
ACM Computing Surveys (CSUR)
Neural Networks for Pattern Recognition
Neural Networks for Pattern Recognition
IEEE Transactions on Pattern Analysis and Machine Intelligence
Bit Plane Decomposition and the Scanning n-tuple Classifier
IWFHR '02 Proceedings of the Eighth International Workshop on Frontiers in Handwriting Recognition (IWFHR'02)
ICDAR '03 Proceedings of the Seventh International Conference on Document Analysis and Recognition - Volume 2
Robust Real-Time Face Detection
International Journal of Computer Vision
Sequence Recognition with Scanning N-Tuple Ensembles
ICPR '04 Proceedings of the Pattern Recognition, 17th International Conference on (ICPR'04) Volume 3 - Volume 03
Modified high-order neural network for invariant pattern recognition
Pattern Recognition Letters
Fast Convolutional OCR with the Scanning N-Tuple Grid
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
Discriminative training of the scanning N-tuple classifier
IWANN'03 Proceedings of the Artificial and natural neural networks 7th international conference on Computational methods in neural modeling - Volume 1
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The Scanning N-Tuple Grid (SNT-Grid) has been demonstrated to be a fast classifier for 2-dimensional images. The high speed is accomplished by scanning separately along rows and columns to extract features and can process thousands of pre-segmented characters per second in training and recognition. This paper proposes the use of orientational features within the SNT-Grid and makes a comparison in performance with features previously reported in literature. In terms of training the classifier, it explores cross entropy training and concludes that it outperforms more conventional maximum likelihood training. Finally, zoned orientational features offer a better implementation with an additional cost in computational time for training and recognition. The best accuracy reported has reduced the error rate of the system by 70% on the same dataset.