Fidelity Problems of Virtual Reality in the Proximity of the Viewer

Современные информационные технологии и IT-образование

Ivan Chernyakov¹  Andrey Gagarin¹ 

[1] Moscow Aviation Institute (National Research University) (Moscow, Russia);

关键词: virtual reality;    hmd;    camera;    viewer;   

DOI  :  10.25559/SITITO.15.201903.721-732

来源: DOAJ

【 摘 要 】

The degree of reliability that modern virtual reality technologies provide when reproducing spatial relationships - distances and shapes of objects - in the range of 0.1 to 2 m from the observer is investigated. These estimates are intended to clarify the prospects for the use of virtual reality in areas such as software engineering, in particular, by “immersing” the programmer’s workplace into virtual reality. Experiments were conducted in which observers evaluate the presentation fidelity of a A4 sheet in virtual reality. In experiments, the perspective distortion of the sheet shape (trapezoid instead of a rectangle) is varied and the observer estimates which of the proposed options enable perceiving a virtual sheet as real, located on the work-table. The obtained results show that the observer is ready to recognize as normal such a list which has a form of trapezoid with the upper side being far from him extended by 20% against the lower side. At the same time normal sheets are recognized as being abnormally narrowed. Also, experiments were conducted comparing the perception of a real and virtual sheet from the extreme camera angle - “from the end-on view” with one eye and with both eyes, permitting to exclude any impact of vertical dimension on the fidelity of perception and clarifying the role of binocular vision in the perception of distance. All the experiments reveal that VR activating a model of a sheet transforms its structure so that the sheet seems to be narrowed at its upper side and shifted into a distance, although the model could be carefully prepared following real form and size of the sheet and providing the requirements of linear perspective in verifiable manner. Fidelity of the source model can be lost and further investigations are needed to understand whether the transformation may be successfully overpassed by preliminary or operative tuning of the model. It seems to be useful to include in VR creation technologies some features enabling analysis and control of spatial intra-model relations. During preparation of the issue the HTC Vive virtual reality helmet was used under control of the Unity 19.2 software system.

【 授权许可】

Unknown