Prospects for diagnosis of movement disorders using computer vision methods based on a mobile device

The research work investigated markerless video analysis technologies based on the analysis of the relative position of heterogeneous parts of object images in successive frames. Modern video motion capture systems are ready-made clusters of points in the form of plates with four markers for long limb segments, a ‘cap’ with markers for the head, etc. The main models used in mobile devices to estimate the movements of the upper limbs and the biomechanics of joint movement in real time were studied, namely PoseNet, MoveNet Thunder, MoveNet Lightning, and BlazePose in Light, Full, and Heavy versions. The models were evaluated for key characteristics such as speed, device impact, and support for hardware acceleration.