Automatic fall risk detection based on imbalanced data

In recent years, the declining birthrate and ageing population have gradually brought countries into an ageing society. In regards to the accidents that occur amongst the elderly, falls are an important problem that quickly causes indirect physical loss. In this thesis, we propose a pose estimation-based fall detection algorithm to detect fall risks. Since fall data is rare in real-world situations, we train and evaluate our approach in a highly imbalanced data setting. We assess not only different imbalanced data handling methods, but also different machine learning algorithms. After oversampling on our training data, the K-Nearest Neighbors (KNN) algorithm achieves the best performance. This experiment provides evidence that our approach is more interpretable, with key features from skeleton information, and workable in multi-people scenarios.

Name thesis:degree_name

Master of Science (MSc)

Discipline thesis:degree_discipline

Computer Science

Grantor

University of Ontario Institute of Technology

Year dc:date.issued

2021

Author dc:creator

• Liu, Yen-Hung (Kevin)

Advisor dc:contributor.advisor

• Hung, Patrick

• Fall detection
• Pose estimation
• Machine learning
• Data sampling
• Anomaly detection

Language dc:language.iso

en

Handle dc:identifier.uri

https://hdl.handle.net/10155/1350

OAI identifier oai:identifier

oai:ontariotechu.scholaris.ca:10155/1350