scholarly journals Dual-View Three-Dimensional Display Based on Direct-Projection Integral Imaging with Convex Mirror Arrays

2019 ◽  
Vol 9 (8) ◽  
pp. 1577
Author(s):  
Choi ◽  
Choi ◽  
Kim
Keyword(s):  
Three Dimensional ◽  
Practical Application ◽  
Integral Imaging ◽  
Image Mapping ◽  
Direct Projection ◽  
Convex Mirror ◽  
New Type ◽  
Elemental Image ◽  
Application Fields ◽  
Mapping Scheme

Dual three-dimensional (3-D) view displays have been attracting much attention in many practical application fields since they can provide two kinds of realistic 3-D images with different perspectives to the viewer. Thus, in this paper, a new type of the dual-view 3-D display system based on direct-projection integral imaging using a convex-mirror-array (CMA) is proposed. Two elemental image arrays (EIAs) captured from each of the two 3-D objects are synthesized into a single dual-view EIA (DV-EIA) with a selective sub-image mapping scheme. The divergent beam of the projector containing the information of the DV-EIA is projected onto the CMA. On each convex mirror of the CMA, left and right-view components of the DV-EIA are separated and reflected back into their viewing directions. Two different 3-D scene images are then integrated and displayed on their respective viewing zones. Ray-optical analysis with the parallel-ray-approximation method and experiments with the test 3-D objects on the implemented 22″ DV 3-D display prototype confirm the feasibility of the proposed system in the practical application

3D Integral Imaging Encryption Using a Depth-Converted Elemental Image Array

2013 ◽  
Vol 479-480 ◽  
pp. 958-962
Author(s):  
Xiao Wei Li ◽  
Seok Ki Lee ◽  
Sung Jin Cho ◽  
Seok Tae Kim
Keyword(s):  
Image Encryption ◽  
Three Dimensional ◽  
3D Image ◽  
Long Distance ◽  
3D Images ◽  
Integral Imaging ◽  
Computational Integral Imaging ◽  
Smart Pixel ◽  
Elemental Image ◽  
Encryption Method

We propose a three-dimensional (3D) image encryption method based on the modified computational integral imaging (CII) technique with the smart pixel mapping (SPM) algorithm, which is introduced for reconstructing orthoscopic 3D images with improved image quality. The depth-converted two-dimensional (2D) elemental image array (EIA) is firstly obtained by SPM-based CII system, and then the 2D EIA is encrypted by Fibonacci transform for 3D image encryption. Compared with conventional encryption methods based on integral imaging (II), the proposed method enables us to reconstruct orthoscopic 3D images at long distance. In addition, the qualities of the reconstructed plane images are enhanced by applying the SPM and pixel average algorithm (PAA) in CII. To show the usefulness of the proposed method, we carry out the preliminary experiments and present the experimental results.

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