Real-time free-viewpoint 3D video for wheelchair seating assessment: preliminary assessment for local and remote applications

Using video-conference-based telerehabilitation technology to provide valid wheelchair assessment results can be a difficult task for occupational therapists (OT) due to the necessity of working on a 3D task within a 2D video-based screen. New virtual reality (VR) technology could improve this process by providing a real-time, 3D representation of the client and their wheelchair that can be remotely manipulated by the rehabilitation specialist. This pilot study examined the potential of combining the Zaxel Virtual Viewpoint™ System (ZaxelVV) with the TightVNC application sharing software as a mean to improve visualization during an online wheelchair assessment. Following evaluation by two OT´s, the current system was found to be appropriate for assessing overall posture in the wheelchair and wheeling hand position while a series of recommendations were also made before such a system could be used clinically. We also discuss the advantages and potential of the 3D approach including the possibilities for 3D measurements as well as automated assessments by a virtual therapist.