Principal Observation Ray Calibration for Tiled-Lens-Array Integral Imaging Display

Li, Weiming; Wang, Haitao; Zhou, Min; Wang, Shandong; Jiao, Shaohui; Mei, Xing; Hong, Tang Sai; Lee, Hoyoung; Kim, Ji-Yeun

doi:10.1109/cvpr.2013.136

Cited by 9 publications

(6 citation statements)

References 12 publications

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“…There have been previous studies on calibrating tiled displays, such as multiple projector displays [19] and also a three-dimensional display [20,21]. For our system, many calibration methods could be used to obtain a fine stitched image for the user's eye.…”

Section: Prototype and Experimental Resultsmentioning

confidence: 99%

“…The tiled approach is the most scalable among these methods, although it has some drawbacks such as small eye clearance and a mismatch of optical axes. The tiled method is also valid for applications in other display systems, such as video walls [18], multiple projector displays [19], autostereoscopic displays [20], light field display systems [21], and holographic displays [22]. In designing an HMD with a large FOV, multiple eyepieces, each with a small FOV and high-resolution, are precisely cut and rotated around a common center to create a mosaic pattern.…”

Section: Introductionmentioning

confidence: 99%

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Design and assessment of a wide FOV and high-resolution optical tiled head-mounted display

et al. 2015

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It has always been a challenge to break the resolution/field-of-view (FOV) invariant to design a large FOV and high-resolution optical system, especially for a head-mounted display (HMD) system. In this study, a tiled HMD using two compact rotationally symmetrical eyepieces was designed and developed. Some issues on exit pupil and eye relief were analyzed in detail and taken into consideration during the design procedure. The overall optical system is compact with high performance. The system volume is smaller than 30 mm×35 mm×30 mm. Based on two 0.61 in. microdisplay devices, the overall tiled system demonstrates an FOV of 66°(H)×32°(V) with a 7.5 mm exit pupil diameter and a 15.7 mm eye relief.

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Section: Prototype and Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and assessment of a wide FOV and high-resolution optical tiled head-mounted display

et al. 2015

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show abstract

“…Based on these designs, many calibration models have been developed to provide three-dimensional panoramic view. 11 To enlarge the elevation view, the blind zone should be eliminated, e.g., using tiling methods, which remain valid for applications in other imaging systems, such as multiple-projector displays, 12 head-mounted displays, 13 light field displays, 14 and holographic displays. 15 Semireflective surfaces and stitched aspherical surfaces are common structures deployed to achieve this goal.…”

Section: Introductionmentioning

confidence: 99%

Design of a 360-deg panoramic capture system based on a smart phone

Song

Liu²,

Cheng

et al. 2020

Opt. Eng.

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A panoramic imaging system has been developed using two afocal lenses and a smart phone that consists of cameras on both sides. An individual afocal lens has been developed with a large field of view (FOV) and a large exit pupil, which can enlarge the FOV of a smart phone camera to above 180 deg. Some issues with the smart phone-based 360-deg panoramic system, such as relative illuminance and assembly tolerance, were analyzed in detail and taken into consideration during the design procedure. A prototype has been developed with a low fabrication cost, yet producing impressive panoramic image quality.

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“…However, when the displays are more complex, such a manual calibration becomes unfeasible. Li et al [10] propose an automatic calibration method for a non-projection integral imaging display with multiple lens array tiles. Yang et al [11] introduced calibration for a multi-projector integral imaging display.…”

Section: Introductionmentioning

confidence: 99%

Homography based identification for automatic and robust calibration of projection integral imaging displays

Jorissen

Jackin

et al. 2019

Appl. Opt.

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Recent advances in the creation of microlens arrays as holographic optical elements (HOEs) allow the creation of projector based see-through light field displays suitable for augmented reality. These systems require an accurate calibration of the projector with relation to the microlens array, as any small misalignment causes the 3D reconstruction to fail. The methods reported so far, require precise placement of the calibration camera w.r.t the lens array screen, which affects the display configuration. We propose a calibration approach which is more robust, and which allows free camera placement. Hence, it does not limit the capabilities of the system. Both a homography based technique and structured light play a central role in realizing such a method. The method was tested on a projection based integral imaging display system consisting of a consumer-grade projector and a digitally designed holographic optical element (DDHOE) based micromirror array screen. The calibration method compensates for the lens distortion, intrinsics and positioning of the projector with relation to the screen. The method uses a single camera and doesn't require the use of obtrusive markers as reference. We give an in-depth explanation of the different steps of the algorithm, and verify the calibration using both a simulated and a real-world setup.

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Principal Observation Ray Calibration for Tiled-Lens-Array Integral Imaging Display

Abstract: Integral imaging display (IID) is a promising technology to provide realistic 3D image without glasses. To achieve a large screen IID with a reasonable fabrication cost, a potential solution is a tiled-lens-array IID (TLA-IID

Cited by 9 publications

References 12 publications

Design and assessment of a wide FOV and high-resolution optical tiled head-mounted display

Design and assessment of a wide FOV and high-resolution optical tiled head-mounted display

Design of a 360-deg panoramic capture system based on a smart phone

Homography based identification for automatic and robust calibration of projection integral imaging displays

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