Tag: opencv

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 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...

Handwriting Rec. – Skew detection

Skew detection n°1 In the previous article, we have started talking about handwriting recognition in the framework of transcribing civil registers. In this paper we discuss some aspects of image preprocessing and page segmentation. Before segmenting a digitized page, we must check and correct its skew, as well as its...

Handwriting Rec. – Overview

Overview In the paper “Handwriting recognition using Cohort of LSTM and lexicon verification with extremely large lexicon” Bruno STUNER, Clément CHATELAIN and Thierry PAQUET define what handwriting recognition is. “Handwriting recognition is the numeric process of translating handwritten text images into strings of characters. The handwriting recognition process...

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