Hand measurement based on integrated vision system – Leap Motion

Samowicz, Martyna; Wieteska, Anna; Redlicka, Justyna; Koter, Katarzyna; Zubrycki, Igor

doi:10.1109/spsympo51155.2020.9593489

Cited by 1 publication

(4 citation statements)

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“…Standard deviations for measurements by Leap Motion, Goniometer and Caliper and the difference of means between average measurements are shown in Table 3. Additionally, the obtained values of standard deviation and Difference of Means were compared with the previous results of measurements carried out with the use of the older version of Leap Motion, goniometer, and calipers [39]. In length measurements, the current version of Leap Motion allowed for higher repeatability of measurements than the older one.…”

Section: Length and Angle Measurementsmentioning

confidence: 97%

“…Additional functionality is the ability to view the history of measurements for a selected patient, thanks to which the therapist can control the progress of rehabilitation. The first version of the interface was dedicated to therapists performing the hand measurements with the Leap Motion vision system [39]. We performed a survey for neuro-rehabilitation students (9 respondents) and practitioners (1 respondent) to evaluate the doctor's interface.…”

Section: User Interfacementioning

confidence: 99%

“…Confirmation of the applicability of the proposed measuring system will allow for further work aimed at creating a complete measurement system for the disabled hand. The proposed system is an improved version of the system based on Leap Motion, which we presented on SPSympo 2011 [39].…”

Section: Introductionmentioning

confidence: 99%

“…Standard deviations (SD) and Difference of Means of measurements by Leap Motion, Caliper, and Goniometer[39].…”

mentioning

confidence: 99%

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Hand Measurement System Based on Haptic and Vision Devices towards Post-Stroke Patients

Koter

Samowicz

Redlicka

et al. 2022

Sensors

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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 Deviations up to 0.7 mm. Joint angle limits measurement achieved poorer results with a mean difference to goniometer of 23.6º. Force measurements taken by the haptic device showed the repeatability with a Standard Deviation of 0.7 N. The presented system allows for a unified measurement and a collection of important parameters of a human hand with therapist interface visualization and control with potential use for post-stroke patients’ precise rehabilitation.

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Section: Length and Angle Measurementsmentioning

confidence: 97%

Section: User Interfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Standard deviations (SD) and Difference of Means of measurements by Leap Motion, Caliper, and Goniometer[39].…”

mentioning

confidence: 99%

See 2 more Smart Citations