GIST Research Team Develops AI-Based Contactless Gait Analysis System

[Asia Economy Honam Reporting Headquarters Reporter Lee Gwan-woo] Gwangju Institute of Science and Technology (GIST) announced on the 17th that the research team led by Professor Kim Moon-sang (Department of Convergence Technology) at the Healthcare Robot Center has succeeded in developing an AI-based gait analysis system.

The research team's gait analysis system is a practical system that uses an RGB-D sensor capable of acquiring depth information of the subject by measuring the time it takes for infrared beams to be emitted and reflected back, significantly overcoming the drawbacks of existing shoe sensors, floor pressure sensors, or motion capture systems in terms of cost and accuracy.

The developed AI technology can accurately predict the classification of disease causes and the long-term progression of diseases, and it is an innovative system that can especially predict the risk of falls, which is a major concern for the elderly and vulnerable.

The research team achieved over 95% classification accuracy for six types of pathological gait through deep learning-based big data analysis by inputting the acquired 3D skeletal information into a Recurrent Neural Networks (RNN) algorithm.

In particular, the system was developed as a cutting-edge solution that can be attached not only as a standalone sensor system but also to intelligent robots, enabling autonomous services by robots.

The research team's gait analysis system precisely measures the movements of all body parts while the subject naturally walks along a predetermined path using the RGB-D sensor.

Through this research, the team succeeded in ultimately replacing the system that used six RGB-D sensors, previously developed and installed at the Gwangju Senior-Friendly Center, with a single sensor, achieving practical application.

Starting this month, the research team will install the gait analysis system at Busan Kosin University Hospital and analyze empirical data collected over the next three months from more than 200 patients with vestibular disorders and orthopedic patients. After completion, the technology will be transferred to related companies.

Professor Kim Moon-sang said, “We want to contribute to the healthcare R&D sector within the AI industrial complex construction project promoted by Gwangju City by additionally installing the gait analysis system in related hospitals in the region and other areas.”

This content was produced with the assistance of AI translation services.