Quantification of the quality of image formation in virtual reality

The article outlines an approach to quantify the change in human perception of virtual reality (VR). VR systems have made significant progress, reducing the impact of their errors. Changes in postural characteristics are particularly distinct in tests where visual information is used more actively, such as when a person balances on a compliant surface. A series of tests were conducted where subjects maintained a vertical posture while standing on a hard force plate. During the tests, the subjects stood on both a regular hard surface (the force plate) and a compliant surface made of polyurethane foam. Maintaining balance on the compliant surface complicates the control task and requires the mobilization of human sensory systems, leading to an increased reliance on visual information. While maintaining posture, the subjects either looked at an image placed on the wall at eye level on a plain background or viewed the same image using virtual reality hemlet. During the examination with VR hemlet, the VR software used coordinates data, orientation and information from the VR helmet inertial sensors to reproduce a stationary environmentimage. For the current sample of volunteers tested on a compliant surface, stabilometric parameters with a stable tendency to change were identified: the average speed of the centre of pressure, an indicator of the quality of the equilibrium function, and the normalised area of the vectorogram. No noticeable changesrelated in the type of support in oculographic data were observed. Noticeable changes in oculographic data were also noted, however, the errors in their determination associated with the discrepancy between the frequencies of oculographic measurements allow us to draw only a preliminary conclusion on this issue.