Measurement of perceived spatial resolution in 3D light-field displays

• Published in: Proceedings - International Conference on Image Processing pp. 768 - 772
• Main Authors: Kovacs, Peter Tamas, Lackner, Kristof, Barsi, Attila, Balazs, Akos, Boev, Atanas, Bregovic, Robert, Gotchev, Atanas
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.10.2014
• Subjects: 3D displays; Distortion measurement; Frequency measurement; light-field displays; resolution measurement; Signal resolution; Spatial resolution; Stereo image processing; subjective experiment; Three-dimensional displays
• ISSN: 1522-4880
• DOI: 10.1109/ICIP.2014.7025154

Effective spatial resolution of projection-based 3D light-field (LF) displays is an important quantity, which is informative about the capabilities of the display to recreate views in space and is important for content creation. We propose a subjective experiment to measure the spatial resolution of LF displays and compare it to our objective measurement technique. The subjective experiment determines the limit of visibility on the screen as perceived by viewers. The test involves subjects determining the direction of patterns that resemble tumbling E eye test charts. These results are checked against the LF display resolution determined by objective means. The objective measurement models the display as a signal-processing channel. It characterizes the display throughput in terms of passband, quantified by spatial resolution measurements in multiple directions. We also explore the effect of viewing angle and motion parallax on the spatial resolution.