Tag: Handwriting

Handwriting Rec. – Connectionist Temporal Classification

Connectionist Temporal Classification After reading the paper from  Farès Menasri et al. “The A2iA French handwriting recognition system at the Rimes-ICDAR2011 competition”, we looked for inquiries about Connectionist Temporal Classification (CTC) as it is a really interesting method to label unsegmented sequences directly. In their article  Alex Graves, Santiago Fernández, Faustino...

Handwriting Rec. – Page segmentation

Page segmentation With tilt and orientation corrections done, we can segment the page to extract lines, then words. To carry out the separation of the letters, we will have to detect the inclination of the handwriting. The document may present deformations, however we will postpone this correction to later,...

Handwriting Rec. – CNN make predictions

Make predictions with a neural network. After building and evaluating neural network models let’s see how they behave to make predictions. We will evaluate model-by-model predictions and then use several training results and models with the bagging and voting method. Bagging and voting are popular methods for combining the...

Handwriting Rec. – CNN Testing

Old French document
Convolutional Neural Network Testing Now, we have some trained models and need to know how well they perform on unseen data. As, Dr.Jason Brownee wrote : “Why can’t you prepare your machine learning algorithm on your training dataset and use predictions from this same dataset to evaluate performance? The...

Handwriting Rec. – Dataset generation

Dataset generation As we wrote in the first article, there are multiple databases available for working on the field of optical or handwritten character recognition. But, why not create your own database that meets your criteria. After implementing and exploring some of your ideas, you can always adapt the...

Handwriting Rec. – Orientation detection

Orientation detection After detecting and correcting the skew of the scanned document, a question arises. Is it in the right direction? Is it right side up or upside down? In 2010, in their article “Combined orientation and skew detection using geometric text-line modeling”, Joost van Beusekom, Faisal Shafait and...

Navigation

Social Media