Real-time 3D display system based on computer-generated integral imaging technique using enhanced ISPP for hexagonal lens array

Do-Hyeong Kim; Munkh-Uchral Erdenebat; Ki-Chul Kwon; Ji-Seong Jeong; Jae-Won Lee; Kyung-Ah Kim; Nam Kim; Kwan-Hee Yoo

doi:10.1364/AO.52.008411

Applied Optics
Vol. 52,
Issue 34,
pp. 8411-8418
(2013)
•https://doi.org/10.1364/AO.52.008411

Real-time 3D display system based on computer-generated integral imaging technique using enhanced ISPP for hexagonal lens array

Do-Hyeong Kim, Munkh-Uchral Erdenebat, Ki-Chul Kwon, Ji-Seong Jeong, Jae-Won Lee, Kyung-Ah Kim, Nam Kim, and Kwan-Hee Yoo

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Do-Hyeong Kim, Munkh-Uchral Erdenebat, Ki-Chul Kwon, Ji-Seong Jeong, Jae-Won Lee, Kyung-Ah Kim, Nam Kim, and Kwan-Hee Yoo, "Real-time 3D display system based on computer-generated integral imaging technique using enhanced ISPP for hexagonal lens array," Appl. Opt. 52, 8411-8418 (2013)

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- Image Processing
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About this Article
History
- Original Manuscript: August 19, 2013
- Revised Manuscript: November 4, 2013
- Manuscript Accepted: November 4, 2013
- Published: November 25, 2013

Abstract

This paper proposes an open computer language (OpenCL) parallel processing method to generate the elemental image arrays (EIAs) for hexagonal lens array from a three-dimensional (3D) object such as a volume data. Hexagonal lens array has a higher fill factor compared to the rectangular lens array case; however, each pixel of an elemental image should be determined to belong to the single hexagonal lens. Therefore, generation for the entire EIA requires very large computations. The proposed method reduces processing time for the EIAs for a given hexagonal lens array. By using the proposed image space parallel processing (ISPP) method, it can enhance the processing speed that generates the 3D display of real-time interactive integral imaging for hexagonal lens array. In our experiment, we implemented the EIAs for hexagonal lens array in real-time and obtained a good processing time for a large of volume data for multiple cases of lens arrays.

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3D Test Objects		Size
Teddy		$128 \times 128 \times 62$ voxels (0.9 Mb)
Male		$128 \times 256 \times 256$ voxels (8 Mb)
Teapot		$256 \times 256 \times 178$ voxels(11.1 Mb)
Mouse		$512 \times 512 \times 512$ voxels (128 Mb)
Equipment	Specifications
S/W	OS	Microsoft Windows 7 (32 bit version)
	Development tool	Microsoft Visual Studio 2008
	Graphic library	OpenGL
	GPU library	OpenCL (CUDA based)
H/W	CPU	Intel Xeon E5620 (2.40GHz)
	Memory	8 Gb RAM
	GPU	NVIDIA Quadro FX3800 (core: 192)
LCD	Pixel pitch	0.1245 mm
LCD	Resolution	$3840 \times 2400$ pixels
HLA	Focal length	3 mm
HLA	Lens pitch	1.143 mm (diameter is 2.286 mm)

	For HLA with $20 \times 20$ Lenses [EIA Size: $500 \times 500$ pixels]		For HLA with $30 \times 30$ Lenses [EIA Size: $500 \times 500$ pixels]
Method Object	Previous ISPP Method (fps/s)	Proposed ISPP Method (fps/s)	Previous ISPP Method (fps/s)	Proposed ISPP Method (fps/s)
Teddy	30.30/0.033	45.45/0.022	17.86/0.056	41.67/0.024
Male	21.28/0.47	31.25/0.032	15.15/0.066	30.30/0.033
Teapot	18.18/0.055	23.81/0.042	14.29/0.069	22.73/0.044
Mouse	15.87/0.063	18.18/0.055	13.70/0.073	18.87/0.053

3D Test Objects		Size
Teddy		$128 \times 128 \times 62$ voxels (0.9 Mb)
Male		$128 \times 256 \times 256$ voxels (8 Mb)
Teapot		$256 \times 256 \times 178$ voxels(11.1 Mb)
Mouse		$512 \times 512 \times 512$ voxels (128 Mb)
Equipment	Specifications
S/W	OS	Microsoft Windows 7 (32 bit version)
	Development tool	Microsoft Visual Studio 2008
	Graphic library	OpenGL
	GPU library	OpenCL (CUDA based)
H/W	CPU	Intel Xeon E5620 (2.40GHz)
	Memory	8 Gb RAM
	GPU	NVIDIA Quadro FX3800 (core: 192)
LCD	Pixel pitch	0.1245 mm
LCD	Resolution	$3840 \times 2400$ pixels
HLA	Focal length	3 mm
HLA	Lens pitch	1.143 mm (diameter is 2.286 mm)

	For HLA with $20 \times 20$ Lenses [EIA Size: $500 \times 500$ pixels]		For HLA with $30 \times 30$ Lenses [EIA Size: $500 \times 500$ pixels]
Method Object	Previous ISPP Method (fps/s)	Proposed ISPP Method (fps/s)	Previous ISPP Method (fps/s)	Proposed ISPP Method (fps/s)
Teddy	30.30/0.033	45.45/0.022	17.86/0.056	41.67/0.024
Male	21.28/0.47	31.25/0.032	15.15/0.066	30.30/0.033
Teapot	18.18/0.055	23.81/0.042	14.29/0.069	22.73/0.044
Mouse	15.87/0.063	18.18/0.055	13.70/0.073	18.87/0.053

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Figures (11)

Tables (2)

Applied Optics