A volumetric display based on a rim-driven varifocal beamsplitter and LED backlit LCD

Smoot, Lanny; Smithwick, Quinn; Reetz, Daniel

doi:10.1145/2048259.2048281

Cited by 8 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such arrangements are described as Gabor superlenses in optics literature [Hembd-Sölner et al 1999]. In a closely related work Eichenlaub et al [2005] demonstrate that superlenses can be used to enlarge a volumetric display, though other means of generating large volumetric displays have been shown [Kimura et al 2006;Smoot et al 2011]. We present a computational and optical system for light field projection.…”

Section: Superlensesmentioning

confidence: 99%

A compressive light field projection system

2014

View full text Add to dashboard Cite

Figure 1: Compressive light field projection for glasses-free 3D display. The system comprises a single light field projector and a completely passive screen. The angular range of the light field emitted from the projector is limited to the size of the projection lens aperture, hence very small. Keplerian telescopes inspire our screen design-the angular range of incident light is expanded for an observer on the other side, creating a field of view that is suitable for glasses-free 3D display. A prototype projector was implemented from scratch using two high-speed spatial light modulators (SLMs); a prototype screen was fabricated from two lenticular sheets with different focal lengths, mounted backto-back. With the implemented system, we achieve high-rank light field synthesis (center) for human observers with a critical flicker fusion threshold that is smaller than the product of the SLM refresh rates and the rank of the synthesized light field. Note that color results above are composited from multiple images captured from our grayscale prototype. AbstractFor about a century, researchers and experimentalists have strived to bring glasses-free 3D experiences to the big screen. Much progress has been made and light field projection systems are now commercially available. Unfortunately, available display systems usually employ dozens of devices making such setups costly, energy inefficient, and bulky. We present a compressive approach to light field synthesis with projection devices. For this purpose, we propose a novel, passive screen design that is inspired by angle-expanding Keplerian telescopes. Combined with high-speed light field projection and nonnegative light field factorization, we demonstrate that compressive light field projection is possible with a single device. We build a prototype light field projector and angle-expanding screen from scratch, evaluate the system in simulation, present a variety of results, and demonstrate that the projector can alternatively achieve super-resolved and high dynamic range 2D image display when used with a conventional screen.

show abstract

Section: Superlensesmentioning

confidence: 99%

A compressive light field projection system

2014

View full text Add to dashboard Cite

show abstract

“…Thus, viewers can view mid-air images without seeing them through imaging optics [9,10]. Moreover, the images can be precisely superimposed on physical objects set in front of the imaging optics [11].…”

Section: Mid-air Imaging Opticsmentioning

confidence: 99%

MARIO: Mid-air Augmented Reality Interaction with Objects

Kim

Takahashi

Yamamoto

et al. 2014

Entertainment Computing

View full text Add to dashboard Cite

a b s t r a c tA seamless connection between a game space and the real world is a long-sought goal of the entertainment computing field. Recent games have intuitive interactions through gestures and motion-based control. However, their images are still confined to the displays. In this paper, we propose a novel interaction experience in which mid-air images interact with physical objects. Our ''Mid-air Augmented Reality Interaction with Objects'' (MARIO) system enables images to be displayed in 3D spaces beyond screens. By creating a spatial link between images appearing in mid-air and physical objects, we extend video games into the real world. For entertainment purposes, a game character appears in mid-air and jumps over real blocks that users have arranged with their hands. A user study was conducted at public exhibitions, and the results showed the popularity and effectiveness of the system as an entertainment application.

show abstract

“…Integral imaging [9,10] can provide full parallax, but the view angle and resolution is limited and is hard to increase. Volumetric display [11,12] recovers real spatial points' light field in 360°; however, the lack of a shadowing relationship limits its use. This problem can be solved by 360°light-field scanning [13].…”

Section: Introductionmentioning

confidence: 99%

Multiview and light-field reconstruction algorithms for 360° multiple-projector-type 3D display

Zhong

Peng

et al. 2013

Appl. Opt.

View full text Add to dashboard Cite

Both multiview and light-field reconstructions are proposed for a multiple-projector 3D display system. To compare the performance of the reconstruction algorithms in the same system, an optimized multiview reconstruction algorithm with sub-view-zones (SVZs) is proposed. The algorithm divided the conventional view zones in multiview display into several SVZs and allocates more view images. The optimized reconstruction algorithm unifies the conventional multiview reconstruction and light-field reconstruction algorithms, which can indicate the difference in performance when multiview reconstruction is changed to light-field reconstruction. A prototype consisting of 60 projectors with an arc diffuser as its screen is constructed to verify the algorithms. Comparison of different configurations of SVZs shows that light-field reconstruction provides large-scale 3D images with the smoothest motion parallax; thus it may provide better overall performance for large-scale 360° display than multiview reconstruction.

show abstract

A volumetric display based on a rim-driven varifocal beamsplitter and LED backlit LCD

Cited by 8 publications

References 0 publications

A compressive light field projection system

A compressive light field projection system

MARIO: Mid-air Augmented Reality Interaction with Objects

Multiview and light-field reconstruction algorithms for 360° multiple-projector-type 3D display

Contact Info

Product

Resources

About