Sensors, Vol. 22, Pages 2060: Hand Measurement System Based on Haptic and Vision Devices towards Post-Stroke Patients

Sensors, Vol. 22, Pages 2060: Hand Measurement System Based on Haptic and Vision Devices towards Post-Stroke Patients Sensors doi: 10.3390/s22052060 Authors: Katarzyna Koter Martyna Samowicz Justyna Redlicka Igor Zubrycki Diagnostics of a hand requires measurements of kinematics and joint limits. The standard tools for this purpose are manual devices such as goniometers which allow measuring only one joint simultaneously, making the diagnostics time-consuming. The paper presents a system for automatic measurement and computer presentation of essential parameters of a hand. Constructed software uses an integrated vision system, a haptic device for measurement, and has a web-based user interface. The system provides a simplified way to obtain hand parameters, such as hand size, wrist, and finger range of motions, using the homogeneous-matrix-based notation. The haptic device allows for active measurement of the wrist’s range of motion and additional force measurement. A study was conducted to determine the accuracy and repeatability of measurements compared to the gold standard. The system functionality was confirmed on five healthy participants, with results showing comparable results to manual measurements regarding fingers’ lengths. The study showed that the finger’s basic kinematic structure could be measured by a vision system with a mean difference to caliper measurement of 4.5 mm and repeatability with the Standard ...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research