12 March 2013 Critical alignment methods for stereoscopic production and post-production image registration
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Abstract
An important aspect in the quality of the three-dimensional perception produced by any stereoscopic production is the precision of its left/right image registration. Tests show that pixel-precise stereoscopic image registration and convergence improves viewer’s three-dimensional perception by reducing viewing discomfort.1 Current software tools generally rely on techniques like 50/50 (onionskin) for camera system and left/right post-production image alignment. Recent stereoscopic software toolset beta tests indicate that these alignment techniques make pixel-accurate registration difficult to achieve. A review of 70 stereo pairs sampled from seven stereoscopic feature films, released from 2009 to 2012, revealed that the majority lacked a precise point of convergence. Extended viewing of inaccurate stereoscopic convergence leads to viewer fatigue and discomfort.
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Christopher A. Mayhew, Christopher A. Mayhew, Craig M. Mayhew, Craig M. Mayhew, } "Critical alignment methods for stereoscopic production and post-production image registration", Proc. SPIE 8648, Stereoscopic Displays and Applications XXIV, 864811 (12 March 2013); doi: 10.1117/12.2005230; https://doi.org/10.1117/12.2005230
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