Handwritten Urdu Character Recognition using 1-Dimensional BLSTM Classifier

TL;DR

This paper introduces a new Urdu handwritten dataset and demonstrates the effectiveness of a 1-D BLSTM classifier for recognizing cursive Urdu characters with high accuracy.

Contribution

The paper presents the first comprehensive Urdu handwritten dataset and applies a 1-D BLSTM classifier for improved recognition accuracy.

Findings

Created the Urdu-Nastaliq Handwritten Dataset (UNHD) with 500 writers.

Achieved significant accuracy in recognizing handwritten Urdu characters.

Demonstrated the effectiveness of 1-D BLSTM in cursive script recognition.

Abstract

The recognition of cursive script is regarded as a subtle task in optical character recognition due to its varied representation. Every cursive script has different nature and associated challenges. As Urdu is one of cursive language that is derived from Arabic script, thats why it nearly shares the same challenges and difficulties even more harder. We can categorized Urdu and Arabic language on basis of its script they use. Urdu is mostly written in Nastaliq style whereas, Arabic follows Naskh style of writing. This paper presents new and comprehensive Urdu handwritten offline database name Urdu-Nastaliq Handwritten Dataset (UNHD). Currently, there is no standard and comprehensive Urdu handwritten dataset available publicly for researchers. The acquired dataset covers commonly used ligatures that were written by 500 writers with their natural handwriting on A4 size paper. We performed experiments using recurrent neural networks and reported a significant accuracy for handwritten Urdu character recognition.