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Evaluating methods for controlling depth perception in stereoscopic cinematography

Sun, G.; Holliman, N.S.; Woods, A.J.; Merritt, J.O.

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Authors

G. Sun

N.S. Holliman

A.J. Woods

J.O. Merritt



Abstract

Existing stereoscopic imaging algorithms can create static stereoscopic images with perceived depth control function to ensure a compelling 3D viewing experience without visual discomfort. However, current algorithms do not normally support standard Cinematic Storytelling techniques. These techniques, such as object movement, camera motion, and zooming, can result in dynamic scene depth change within and between a series of frames (shots) in stereoscopic cinematography. In this study, we empirically evaluate the following three types of stereoscopic imaging approaches that aim to address this problem. (1) Real-Eye Configuration: set camera separation equal to the nominal human eye interpupillary distance. The perceived depth on the display is identical to the scene depth without any distortion. (2) Mapping Algorithm: map the scene depth to a predefined range on the display to avoid excessive perceived depth. A new method that dynamically adjusts the depth mapping from scene space to display space is presented in addition to an existing fixed depth mapping method. (3) Depth of Field Simulation: apply Depth of Field (DOF) blur effect to stereoscopic images. Only objects that are inside the DOF are viewed in full sharpness. Objects that are far away from the focus plane are blurred. We performed a human-based trial using the ITU-R BT.500-11 Recommendation to compare the depth quality of stereoscopic video sequences generated by the above-mentioned imaging methods. Our results indicate that viewers' practical 3D viewing volumes are different for individual stereoscopic displays and viewers can cope with much larger perceived depth range in viewing stereoscopic cinematography in comparison to static stereoscopic images. Our new dynamic depth mapping method does have an advantage over the fixed depth mapping method in controlling stereo depth perception. The DOF blur effect does not provide the expected improvement for perceived depth quality control in 3D cinematography. We anticipate the results will be of particular interest to 3D filmmaking and real time computer games.

Citation

Sun, G., Holliman, N., Woods, A., & Merritt, J. (2009). Evaluating methods for controlling depth perception in stereoscopic cinematography. In Stereoscopic displays and applications XX. https://doi.org/10.1117/12.807136

Conference Name Stereoscopic Displays and Applications XX: Proceedings of the SPIE Volume 7237
Conference Location San Jose
Publication Date Feb 17, 2009
Deposit Date Jan 20, 2012
Publicly Available Date Mar 29, 2024
Publisher SPIE
Series Title Proceedings of SPIE
Series Number 7237
Book Title Stereoscopic displays and applications XX.
DOI https://doi.org/10.1117/12.807136
Additional Information 12 February

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Copyright Statement
Copyright 2009 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.





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