Depth Artifacts Caused by Spatial Interlacing in Stereoscopic 3D Displays

Most spatially interlacing stereoscopic 3D displays display odd and even rows of an image to either the left or the right eye of the viewer. The visual system then fuses the interlaced image into a single percept. This row-based interlacing creates a small vertical disparity between the images; however, interlacing may also induce horizontal disparities, thus generating depth artifacts. Whether people perceive the depth artifacts and, if so, what is the magnitude of the artifacts are unknown. In this study, we hypothesized and tested if people perceive interlaced edges on different depth levels. We tested oblique edge orientations ranging from 2 degrees to 32 degrees and pixel sizes ranging from 16 to 79 arcsec of visual angle in a depth probe experiment. Five participants viewed the visual stimuli through a stereoscope under three viewing conditions: noninterlaced, interlaced, and row averaged (i.e., where even and odd rows are averaged). Our results indicated that people perceive depth artifacts when viewing interlaced stereoscopic images and that these depth artifacts increase with pixel size and decrease with edge orientation angle. A pixel size of 32 arcsec of visual angle still evoked depth percepts, whereas 16 arcsec did not. Row-averaging images effectively eliminated these depth artifacts. These findings have implications for display design, content production, image quality studies, and stereoscopic games and software.

[1]  Karen O. Egiazarian,et al.  Classification and simulation of stereoscopic artifacts in mobile 3DTV content , 2009, Electronic Imaging.

[2]  B. Julesz,et al.  Modifications of the Classical Notion of Panum's Fusional Area , 1980, Perception.

[3]  Martin S. Banks,et al.  The venetian-blind effect: a preference for zero disparity or zero slant? , 2013, Front. Psychol..

[4]  B. Julesz.  Binocular depth perception of computer-generated patterns , 1960 .

[5]  Ian P. Howard,et al.  Perceiving in DepthVolume 2 Stereoscopic Vision , 2012 .

[6]  Joohwan Kim,et al.  Effect of interlacing methods of stereoscopic displays on perceived image quality. , 2014, Applied optics.

[7]  J. Anthony Movshon,et al.  A simple explanation of the induced size effect , 1981, Vision Research.

[8]  Avi C. Naiman,et al.  Jagged edges: when is filtering needed? , 1998, TOGS.

[9]  Minyoung Park,et al.  Comparison of perceived resolution between the active retarder and patterned retarder 3D displays , 2013 .

[10]  W. Geisler.  Visual perception and the statistical properties of natural scenes. , 2008, Annual review of psychology.

[11]  Raymond van Ee,et al.  Unconstrained stereoscopic matching of lines , 2000, Vision Research.

[12]  G. Brink,et al.  Diplopia thresholds and the initiation of vergence eye-movements , 1981, Vision Research.

[13]  I. P. Howard,et al.  Effects of stimulus size and eccentricity on horizontal and vertical vergence , 2000, Experimental Brain Research.

[14]  Sung-Wook Min,et al.  Three-dimensional display technologies of recent interest: principles, status, and issues [Invited]. , 2011, Applied optics.

[15]  P. Cavanagh,et al.  Subjective contours capture stereopsis , 1985, Nature.

[16]  Robert S. Allison,et al.  Effects of Long-Term Exposure on Sensitivity and Comfort with Stereoscopic Displays , 2014, TAP.

[17]  Martin S. Banks,et al.  Misperceptions in stereoscopic displays: a vision science perspective , 2008, APGV '08.

[18]  G. J. Mitchison,et al.  Interpolation in stereoscopic matching , 1985, Nature.

[19]  David Brewster,et al.  XLIII.—On the Knowledge of Distance given by Binocular Vision , 1847, Transactions of the Royal Society of Edinburgh.

[20]  G. J. Mitchison,et al.  The resolution of ambiguous stereoscopic matches by interpolation , 1987, Vision Research.

[21]  Robert S Allison,et al.  Stereoscopy and the Human Visual System. , 2011, SMPTE motion imaging journal.

[22]  Martin S. Banks,et al.  65.1: Effective Spatial Resolution of Temporally and Spatially Interlaced Stereo 3D Televisions , 2012 .

[23]  Seungjoon Yang,et al.  Evaluation of Perceptual Resolution and Crosstalk in Stereoscopic Displays , 2013, Journal of Display Technology.

[24]  M. T. Ukwade,et al.  Effects of Nonius Line and Fusion Lock Parameters on Fixation Disparity , 2000, Optometry and vision science : official publication of the American Academy of Optometry.

[25]  Mark Edwards,et al.  Spatial interactions minimize relative disparity between adjacent surfaces , 2001, Vision Research.

[26]  James A. Crowell,et al.  Horizontal and vertical disparity, eye position, and stereoscopic slant perception , 1999, Vision Research.