Browsing by Author "Cho, Myungjin"

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Improved Viewing Zones for Projection Type Integral Imaging 3D Display Using Adaptive Liquid Crystal Prism Array
(2014-03-01)
Chen, Chih-Wei
;
Cho, Myungjin
;
Huang, Yi-Pai
;
Javidi, Bahram
;
光電工程學系
In this paper, we present a novel projection-type 3-D integral imaging display with an adaptive liquid crystal (LC) prism array. Comparing with conventional integral imaging display, the proposed system demonstrated that the viewing zones for a projection type integral imaging display was successfully extended by time-multiplexed technique and without any mechanical movement. To the best of our knowledge, this is the first report on combining an adaptive LC prism array with the projection-type integral imaging 3-D display. The proposed display is attractive for future wide viewing zone projection-type integral imaging 3-D displays.
Liquid Crystal Lens for Axially Distributed Three-Dimensional Sensing
(2013)
Huang, Yi-Pai
;
Chen, Chih-Wei
;
Cho, Myungjin
;
Javidi, Bahram
;
光電工程學系
In this paper, we present a novel three-dimensional (3D) sensing system which can demonstrate 3D acquisition. The proposed system is using an electronically tunable liquid crystal (LC) lens with axially distributed sensing method. Therefore, multiple 2D images with slightly different perspectives by varying the focal lengths of the LC lens without mechanical movements of an image sensor can be recorded. And then the 3D images are further reconstructed according to the ray-back projection algorithm. The preliminary functionalities are also demonstrated in this paper. We believe that our proposed system may useful for a compact 3D sensing camera system
Three-dimensional imaging with axially distributed sensing using electronically controlled liquid crystal lens
(2012-10-01)
Chen, Chih-Wei
;
Cho, Myungjin
;
Huang, Yi-Pai
;
Javidi, Bahram
;
土木工程學系
In this Letter, we present a three-dimensional (3D) imaging system with axially distributed sensing (ADS) using an electronically controlled liquid crystal (LC) lens. The proposed system performed an optical image acquisition by varying the focal lengths of the LC lens without mechanical movements of an image sensor. Multiple images with slightly different perspectives were experimentally recorded, and the 3D images were reconstructed according to the ray backprojection algorithm. To the best of our knowledge, this is the first report on 3D ADS using a LC lens. The proposed system is attractive for compact 3D sensing camera systems. (C) 2012 Optical Society of America