Using Visual Effects to Facilitate Depth Perception for Spatial Tasks in Virtual and Augmented Reality

When developing serious games relying on spatial placement tasks in Augmented/Virtual Reality (AR/VR), having an accurate depth perception of virtual objects is highly important. It even becomes essential when such games are used for assessment of motion disorders. Patients should be able to naturally interact with the virtual and augmented environment and to perceive the correct 3D position of objects around them. We report on the results of a user study with 16 participants exploring whether visual effects applied to 3D content in AR and VR provide a better depth perception, level of presence or engagement to users. The findings show that visual effects both in AR and VR have a negative impact on perceived depth. The measured performance in VR though is best using visual effects while in AR without using visual effects. Both in AR and VR, visual effects influenced the user's level of presence negatively.

[1]  Rosa María Baños,et al.  Presence and Emotions in Virtual Environments: The Influence of Stereoscopy , 2008, Cyberpsychology Behav. Soc. Netw..

[2]  Alan Chalmers,et al.  Stereo vision for computer graphics: the effect that stereo vision has on human judgments of visual realism , 2003, SCCG '03.

[3]  Graham R Jones,et al.  Controlling perceived depth in stereoscopic images , 2001, IS&T/SPIE Electronic Imaging.

[4]  Michael J. Singer,et al.  Measuring Presence in Virtual Environments: A Presence Questionnaire , 1998, Presence.

[5]  Steven K. Feiner,et al.  Perceptual issues in augmented reality revisited , 2010, 2010 IEEE International Symposium on Mixed and Augmented Reality.

[6]  Heinrich H. Bülthoff,et al.  Virtual arm׳s reach influences perceived distances but only after experience reaching , 2015, Neuropsychologia.

[7]  Paul Milgram,et al.  Perceptual issues in augmented reality , 1996, Electronic Imaging.

[8]  Ralf Dörner,et al.  Issues with Virtual Space Perception within Reaching Distance: Mitigating Adverse Effects on Applications Using HMDs in the Automotive Industry , 2009, 2009 IEEE Virtual Reality Conference.

[9]  Philippe Fuchs,et al.  Visual Fatigue Reduction for Immersive Stereoscopic Displays by Disparity, Content, and Focus-Point Adapted Blur , 2012, IEEE Transactions on Industrial Electronics.

[10]  Jannick P. Rolland,et al.  Depth judgments in a see-through head-mounted display , 1997, Defense, Security, and Sensing.

[11]  M. Rosa,et al.  Presence and emotions in virtual environments: the influence of stereoscopy. , 2008 .

[12]  Anatole Lécuyer,et al.  Using an Eye-Tracking System to Improve Camera Motions and Depth-of-Field Blur Effects in Virtual Environments , 2008, 2008 IEEE Virtual Reality Conference.

[13]  Brian A. Barsky,et al.  Algorithms for rendering depth of field effects in computer graphics , 2008 .

[14]  Boris M. Velichkovsky,et al.  The perception of egocentric distances in virtual environments - A review , 2013, ACM Comput. Surv..

[15]  Blair MacIntyre,et al.  Experiences with an AR evaluation test bed: Presence, performance, and physiological measurement , 2010, 2010 IEEE International Symposium on Mixed and Augmented Reality.

[16]  Marina-Anca Cidotã,et al.  Designing for Engagement in Augmented Reality Games to Assess Upper Extremity Motor Dysfunctions , 2015, 2015 IEEE International Symposium on Mixed and Augmented Reality - Media, Art, Social Science, Humanities and Design.

[17]  J. Edward Swan,et al.  Matching and Reaching Depth Judgments with Real and Augmented Reality Targets , 2015, IEEE Transactions on Visualization and Computer Graphics.

[18]  Cristina V. Lopes,et al.  A Spatial Augmented Reality Rehab System for Post-Stroke Hand Rehabilitation , 2013, MMVR.

[19]  Gary Burnett,et al.  Optical see-through head up displays' effect on depth judgments of real world objects , 2015, 2015 IEEE Virtual Reality (VR).

[20]  Przemyslaw Rokita,et al.  Generating depth of-field effects in virtual reality applications , 1996, IEEE Computer Graphics and Applications.

[21]  Hossein Mousavi Hondori,et al.  Haptic Augmented Reality to monitor human arm's stiffness in rehabilitation , 2012, 2012 IEEE-EMBS Conference on Biomedical Engineering and Sciences.