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A Lexicon Reduction Method Based on Clustering Word Images in Offline Farsi Handwritten Word Recognition Systems

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3 Author(s)
Bayesteh, E. ; Dept. Electr., Electron. & Robotic Eng., Shahrood Univ. of Technol., Shahrood, Iran ; Ahmadifard, A. ; Khosravi, Hossein

In this paper a novel approach for lexicon reduction of Farsi words is proposed. For this purpose we extract upper and lower profiles, vertical projection profile and black/white transition from word images. Using DTW similarity between words in the database is measured. The Isoclus algorithm is used to cluster handwritten word images of training dataset. The initial center of clusters is determined from agglomerative hierarchical clustering algorithm. Experimental results on IRANSHAHR dataset show a promising result. It yields a lexicon reduction of 77% with accuracy of 94%. We also evaluate the proposed system when combination of statistical features and different type of distance measures are used.

Published in:

Machine Vision and Image Processing (MVIP), 2011 7th Iranian

Date of Conference:

16-17 Nov. 2011