MACHINE VISION-BASED METHOD AND SYSTEM FOR DETERMINING A RANGE OF MOTION OF A JOINT OF A HAND OF A SUBJECT

• Main Authors: XU, Yan Wen, WANG, Ying, CHAN, Che Hin Chetwyn, FU, Hong, WANG, Jun, HOU, Beibei
• Format: Patent
• Language: English
• Published: 03.07.2025
• Subjects: CALCULATING; COMPUTING; COUNTING; DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY

The present disclosure provides a machine vision-based method for determining a range of motion of a joint of a hand of a subject and a system for implementing the same. The provided method comprises: facilitating the subject to perform a hand movement at a preset position; capturing at least two prior-movement images of the hand when the hand is in a neutral posture before performing the hand movement; capturing at least two post-movement images of the hand when the hand is in an assessment posture after performing the hand movement; processing the captured prior-movement images to obtain a plurality of prior-movement key point positions; processing the captured post-movement images to obtain a plurality of post-movement key point positions; and calculating the range of motion of the joint based on the plurality of prior-movement key point positions and the plurality of post-movement key point positions.