Integral imaging with reduced color moire pattern by using a slanted lens array

Kim, Yun-Hee; Park, Gilbae; Cho, Seong-Woo; Jung, Jae‐Hyun; Lee, Byoungho; Choi, Yun-Hyuk; Lee, Moon-Gyu

doi:10.1117/12.767597

Cited by 11 publications

(5 citation statements)

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“…In this paper color moiré pattern is attributed to the metal mesh which distorts the display like barrier in auto-stereoscopic (3D) display technique [14]. As we reviewed literatures in this field [15][16][17][18][19][20][21][22]25], it turns out that color moiré pattern is a common problem.…”

Section: Mechanism Of the Color Moiré Patternmentioning

confidence: 99%

P‐213: Simulation of Color Moiré Pattern in LCD‐based Metal Mesh Touch Screen

Zhang²,

Li³

et al. 2017

Symp Digest of Tech Papers

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When a piece of LCD with CF period 77.51mm by 227.0um is laminated with a metal mesh touch screen whose period is 160.0um, discernable color moiré pattern occurs. It inflicts negative impact on the visual quality of touch products. This paper discusses the mechanism of the interference and also develops an effective model By means of simulation, the model and hence the mechanism is verified. It reveals that if proper mesh period and the gap between LCD and metal mesh are selected, color moiré pattern can be eliminated. Author KeywordsMetal mesh; LCD; Color moiré pattern P-213 / J. Xu SID 2017 DIGEST • 2087 ISSN 0097-996X/17/4703-2087-$1.00 © 2017 SID P-213 / J. Xu SID 2017 DIGEST • 2089 P-213 / J. Xu 2090 • SID 2017 DIGEST

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Section: Mechanism Of the Color Moiré Patternmentioning

confidence: 99%

P‐213: Simulation of Color Moiré Pattern in LCD‐based Metal Mesh Touch Screen

Zhang²,

Li³

et al. 2017

Symp Digest of Tech Papers

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“…The purpose of tilting, as shown in Fig. 3, is to reduce moirés [7][8] [9]. In this case, we have considerable latitude in the angle of tilt permitted in this case.…”

Section: Slanted Lenticular Systemmentioning

confidence: 99%

Extended Fractional View Integral Photography Using Slanted Orthogonal Lenticular Lenses

Yanaka

Nomura²,

Yamanouchi

2016

World Congress on Electrical Engineering and Computer Systems and Science

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-Integral photography (IP) is one of the best 3D image display systems because both horizontal and vertical parallaxes can be obtained without a need to wear stereo glasses. IP hardware can most easily be produced by placing a fly's eye lens on a high-definition flat panel display, such as a liquid crystal display (LCD). The price of high-definition LCDs is falling given the progress of its production technology. By contrast, the initial cost of producing a fly's eye lens remains very high because a very expensive metal mold has to be produced in most cases. This problem has been solved by introducing the extended fractional view method, which enables the combination of any ready-made LCD with any ready-made fly's eye lens. However, other problems persist, i.e., the limited types of ready-made fly's eye lens on the market and the lack of large fly's eye lenses. Without such lenses, the 3D display screen size cannot be enlarged. In this work, we solved this problem by replacing a fly's eye lens with two mutually perpendicular lenticular lenses based on the fact that two orthogonally stacked lenticular lenses work as if they were a single fly's eye lens. Unlike fly's eye lenses, large off-theshelf lenticular lenses are available in the market because of their applications in large 3D signboards, among others. Another issue to be addresses is the suppression of very obstructive moiré pattern caused by the interference between the LCD of pixels and small convex lenses. This problem was solved by slightly tilting the orthogonal fly's eye lenses against the LCD. In our experiment, a 3D scene data created with The Persistence of Vision Raytracer (POV-Ray) was rendered from 16 × 16 different viewpoints so that 256 still images were obtained. Our original software, which was developed in C# language, synthesized an IP image from the 256 images. When the image was displayed on a 4K 28-inch LCD and observed through the orthogonal lenticular lenses, a 3D image with both horizontal and vertical parallaxes was observed.

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“…The main idea is to introduce the moiré pattern reduction technique using a slanted lens array [5][6] to the cases of the EFV integral photography using a hexagonal fly's eye lens.…”

Section: Slanted Lens Arraymentioning

confidence: 99%