Identifying pathological facial weakness using fuzzy inference

Victoria Porter, Eliza Przewozniak, Richard Gault, Mark McDonald, Omar Uribe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Stroke is the second largest cause of death and disability-adjusted life-years in the world. Minimising the time to treatment for patients is extremely important. Facial weakness is a core symptom that medical professionals consider when identifying cases of stroke. This is a subjective assessment of asymmetry in the face. Due to this subjectivity, it is challenging to articulate the decision making process of a neurologist. This work presents novel computational approaches to accurately model the detection of pathological facial weakness from images of people with and without pathological facial weakness. Instance segmentation is first used to isolate key facial features that inform the decision making of a fuzzy inference system. This proof of concept study shows the feasibility of automated feature extraction and the effectiveness of fuzzy inference systems in identifying facial weakness. Furthermore, the transparent nature of the instance segmentation model and the fuzzy rule base has enabled the model to be compared against the real-world decision-making process of a neurologist. The findings motivate future investigations to develop fuzzy inference systems to detect other common deficits of stroke including limb weakness and drift as well as dysarthria.

Original languageEnglish
Title of host publicationProceedings of the Irish Machine Vision and Image Processing Conference 2021
PublisherIrish Pattern Recognition & Classification Society
ISBN (Print)9780993420764
Publication statusPublished - 02 Sept 2021
EventIrish Machine Vision and Image Processing Conference - Virtual (Dublin City University), Ireland
Duration: 01 Sept 202103 Sept 2021
Conference number: 2021


ConferenceIrish Machine Vision and Image Processing Conference
Abbreviated titleIMVIP
Internet address


  • Machine learning
  • image segmentation
  • Deep Learning
  • fuzzy systems

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Artificial Intelligence
  • Neurology


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