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The Extended-Average Common Submatrix Similarity Measure with Application to Handwritten Character Images
Volume 29, Issue 3 (2018), pp. 399–420
Pub. online: 1 January 2018      Type: Research Article      Open accessOpen Access
Received
1 December 2017
Accepted
1 June 2018
Published
1 January 2018

Abstract

This paper introduces a new similarity measure derived from the Common Submatrix-based measures for comparing square matrices. The novelty is that the similarity between two matrices is computed as the average area of the largest sub-matrices exactly matching and being located at the same position in the two matrices. By contrast, in the original similarity measures, the largest sub-matrices can exactly or approximately match and be located at different positions. An experiment conducted on a subset of the MNIST and NIST datasets shows that the new similarity measure is very promising in retrieving relevant handwritten character images.

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Biographies

Amelio Alessia
aamelio@dimes.unical.it

A. Amelio was awarded the candidate of computer science engineering degree at University of Calabria in 2009 (Faculty of Engineering), doctor of the computer science and systems engineering sciences in 2013. She has served as a contract professor and a research fellow at DIMES University of Calabria. Her research interests have included pattern recognition, artificial intelligence and machine learning algorithms for image processing, document analysis, and social networks.

Brodić Darko
dbrodic@tfbor.bg.ac.rs

D. Brodić was awarded the candidate of electrical engineering degree at University of Sarajevo in 1990, doctor of electrical engineering sciences at University of Banja Luka in 2011. He has served as an associate professor at the Technical Faculty in Bor, University of Belgrade. His research interests have included document analysis, artificial intelligence and machine learning algorithms for image processing and pattern recognition.

Janković Radmila
rjankovic@mi.sanu.ac.rs

R. Janković received her BSc and MSc from the Technical Faculty in Bor, University of Belgrade in 2015 and 2016, respectively. Currently, she is a PhD student at the Technical Faculty in Bor, University of Belgrade. Her current research interests include different aspects of statistical analysis and e-business implementation.


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© 2018 Vilnius University
Open access article under the CC BY license.

Keywords
pattern matching 2d array similarity image processing characters recognition

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