On the development of conjunctival hyperemia computer-assisted diagnosis tools: Influence of feature selection and class imbalance in automatic gradings.

Journal: Artificial intelligence in medicine
Published Date: Jul 1, 2016

Abstract

OBJECTIVE: The sudden increase of blood flow in the bulbar conjunctiva, known as hyperemia, is associated to a red hue of variable intensity. Experts measure hyperemia using levels in a grading scale, a procedure that is subjective, non-repeatable and time consuming, thus creating a need for its automatisation. However, the task is far from straightforward due to data issues such as class imbalance or correlated features. In this paper, we study the specific features of hyperemia and propose various approaches to address these problems in the context of an automatic framework for hyperemia grading.

Authors

  • María Luisa Sánchez Brea
    VARPA Group, Department of Computer Science, University of A Coruna, Campus de Elviña s/n, 15071 A Coruña, Spain. Electronic address: luisa.brea@udc.es.
  • Noelia Barreira Rodríguez
    VARPA Group, Department of Computer Science, University of A Coruna, Campus de Elviña s/n, 15071 A Coruña, Spain. Electronic address: nbarreira@udc.es.
  • Noelia Sánchez Maroño
    LIDIA, Department of Computer Science, University of A Coruna, Campus de Elviña s/n, 15071 A Coruña, Spain. Electronic address: nsanchez@udc.es.
  • Antonio Mosquera González
    Artificial Vision Group, Department of Electronics and Computer Science, University of Santiago de Compostela, C/ Joaquín Díaz de Rábago s/n (Campus Sur), 15782 Santiago de Compostela, Spain. Electronic address: antonio.mosquera@usc.es.
  • Carlos García-Resúa
    Optometry Group, Department of Applied Physics, University of Santiago de Compostela, Edificio Monte da Condesa s/n (Campus Sur), 15782 Santiago de Compostela, Spain. Electronic address: carlos.garcia.resua@usc.es.
  • María Jesús Giráldez Fernández
    Optometry Group, Department of Applied Physics, University of Santiago de Compostela, Edificio Monte da Condesa s/n (Campus Sur), 15782 Santiago de Compostela, Spain. Electronic address: mjesus.giraldez@usc.es.

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