Use of Spherical and Cartesian Features for Learning and Recognition of the Static Mexican Sign Language Alphabet

Homero V. Rios-Figueroa (), Angel J. Sánchez-García, Candy Obdulia Sosa-Jiménez and Ana Luisa Solís-González-Cosío
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Homero V. Rios-Figueroa: Research Institute in Artificial Intelligence, University of Veracruz, Veracruz 91097, Mexico
Angel J. Sánchez-García: School of Statistics and Informatics, University of Veracruz, Veracruz 91020, Mexico
Candy Obdulia Sosa-Jiménez: School of Statistics and Informatics, University of Veracruz, Veracruz 91020, Mexico
Ana Luisa Solís-González-Cosío: School of Sciences, National Autonomous University of Mexico (UNAM), Coyoacán 04510, Mexico

Mathematics, 2022, vol. 10, issue 16, 1-25

Abstract: The automatic recognition of sign language is very important to allow for communication by hearing impaired people. The purpose of this study is to develop a method of recognizing the static Mexican Sign Language (MSL) alphabet. In contrast to other MSL recognition methods, which require a controlled background and permit changes only in 2D space, our method only requires indoor conditions and allows for variations in the 3D pose. We present an innovative method that can learn the shape of each of the 21 letters from examples. Before learning, each example in the training set is normalized in the 3D pose using principal component analysis. The input data are created with a 3D sensor. Our method generates three types of features to represent each shape. When applied to a dataset acquired in our laboratory, an accuracy of 100% was obtained. The features used by our method have a clear, intuitive geometric interpretation.

Keywords: sign language; learning; recognition; geometric features; classification (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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