Open AccessGrayscale performance enhancement for time-multiplexing light field rendering
Author(s) -
Chen Su,
Qing Zhong,
Yifan Peng,
Xu Liang,
Rui Wang,
Haifeng Li,
Xu Liu
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.032622
Subject(s) - halftone , grayscale , dither , computer science , multiplexing , rendering (computer graphics) , computer vision , artificial intelligence , pixel , image quality , light field , computer graphics (images) , telecommunications , noise shaping , image (mathematics)
One of the common approaches to compensate for the grayscale performance limitation in time-multiplexing light field displays is to employ a halftone technique. We propose an ordered-dithering halftone algorithm based on a 3-dimension super-mask to increase the gray levels of the time-multiplexing light field display. Our method makes full use of the overlapping perceived pixels which are caused by the time-multiplexing design, such that effectively trading-off the spatial resolution and color performance. A real-time rendering time-multiplexing display prototype is built to validate the proposed halftone algorithm. We conducted a user study to evaluate the quality of display scenes dithered by different super-mask configuration, which showed the consistency with the parameters we pre-calculated. The 3D ordered-dithering algorithm is able to present better visual perception than the conventional halftone algorithms with respect to grayscale representation, and flexible to be applied in different time-multiplexing light field display systems.