Unobtrusive Pain Monitoring in Older Adults with Dementia using Pairwise
and Contrastive Training
- URL: http://arxiv.org/abs/2101.03251v1
- Date: Fri, 8 Jan 2021 23:28:30 GMT
- Title: Unobtrusive Pain Monitoring in Older Adults with Dementia using Pairwise
and Contrastive Training
- Authors: Siavash Rezaei, Abhishek Moturu, Shun Zhao, Kenneth M. Prkachin,
Thomas Hadjistavropoulos, and Babak Taati
- Abstract summary: Although pain is frequent in old age, older adults are often undertreated for pain.
This is especially the case for long-term care residents with moderate to severe dementia who cannot report their pain because of cognitive impairments that accompany dementia.
We present the first fully automated vision-based technique validated on a dementia cohort.
- Score: 3.7775543603998907
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- Abstract: Although pain is frequent in old age, older adults are often undertreated for
pain. This is especially the case for long-term care residents with moderate to
severe dementia who cannot report their pain because of cognitive impairments
that accompany dementia. Nursing staff acknowledge the challenges of
effectively recognizing and managing pain in long-term care facilities due to
lack of human resources and, sometimes, expertise to use validated pain
assessment approaches on a regular basis. Vision-based ambient monitoring will
allow for frequent automated assessments so care staff could be automatically
notified when signs of pain are displayed. However, existing computer vision
techniques for pain detection are not validated on faces of older adults or
people with dementia, and this population is not represented in existing facial
expression datasets of pain. We present the first fully automated vision-based
technique validated on a dementia cohort. Our contributions are threefold.
First, we develop a deep learning-based computer vision system for detecting
painful facial expressions on a video dataset that is collected unobtrusively
from older adult participants with and without dementia. Second, we introduce a
pairwise comparative inference method that calibrates to each person and is
sensitive to changes in facial expression while using training data more
efficiently than sequence models. Third, we introduce a fast contrastive
training method that improves cross-dataset performance. Our pain estimation
model outperforms baselines by a wide margin, especially when evaluated on
faces of people with dementia. Pre-trained model and demo code available at
https://github.com/TaatiTeam/pain_detection_demo
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