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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Homero V. Rios-Figueroa & Angel J. Sánchez-García & Candy Obdulia Sosa-Jiménez & Ana Luisa Solís-González-Cosío, 2022. "Use of Spherical and Cartesian Features for Learning and Recognition of the Static Mexican Sign Language Alphabet," Mathematics, MDPI, vol. 10(16), pages 1-25, August.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:16:p:2904-:d:886933
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    References listed on IDEAS

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    1. Raquel Pérez-delHoyo & María Dolores Andújar-Montoya & Higinio Mora & Virgilio Gilart-Iglesias & Rafael Alejandro Mollá-Sirvent, 2021. "Participatory Management to Improve Accessibility in Consolidated Urban Environments," Sustainability, MDPI, vol. 13(15), pages 1-22, July.
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    Cited by:

    1. Luke T. Woods & Zeeshan A. Rana, 2023. "Modelling Sign Language with Encoder-Only Transformers and Human Pose Estimation Keypoint Data," Mathematics, MDPI, vol. 11(9), pages 1-28, May.

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