Home // International Journal On Advances in Life Sciences, volume 17, numbers 1 and 2, 2025 // View article


Detection of Changes in Lateral Weight Shift During Gait Improvement of Patients via Image Analysis of Frontal-Direction Imaging Using MediaPipe

Authors:
Yasutaka Uchida
Tomoko Funayama
Eiichi Ohkubo
Daisuke Souma
Yasunori Fujimori
Yoshiaki Kogure

Keywords: MediaPipe; rehabilitation evaluation; digital health; frontal-direction image; gait analysis; lateral weight shift.

Abstract:
Obtaining numerical skeletal data is important for objectively assessing a patient’s gait status. Using MediaPipe on images captured from the frontal plane—a method not limited by the imaging-facility size—we use skeletal data to evaluate walking changes caused by the rehabilitation of three patients over a period of approximately one month. To reduce errors due to differences in participant picture size, two methods are examined: one based on waist width and the other on shoulder width. Using standardized data, we examine the changes in the nose position, left and right ankle heights, and left and right shoulder slopes, as well as the differences between toes and heels, and between the left and right elbow widths. Additionally, the appearance of each part of the body during walking is examined via spectrograms. Despite the few participants, the findings suggest that not only the stride length and foot speed but also the blurring of the nose position, left and right elbow positions, and ankle and knee can be used as indicators to assess whether weight is being shifted smoothly during walking as well as to evaluate the degree of recovery from rehabilitation.

Pages: 19 to 30

Copyright: Copyright (c) to authors, 2025. Used with permission.

Publication date: June 30, 2025

Published in: journal

ISSN: 1942-2660