Light field projection for lighting reproduction

Zhou, Zhong; Yu, Tao; Qiu, Xiaofeng; Yang, Ruigang; Zhao, Qi

doi:10.1109/vr.2015.7223335

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…The system can be configured as a combination of a lens array and backlight. Various implementations have employed LED arrays [44,45] and projectors [55]. Moreover, we found a system consisting of mirrors and projectors [4].…”

Section: Lighting Reproductionmentioning

confidence: 99%

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Projection Mapping with a Brightly Lit Surrounding Using a Mixed Light Field Approach

Yasui,

Iwataki,

Ishikawa

et al. 2024

IEEE Trans. Visual. Comput. Graphics

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Section: Lighting Reproductionmentioning

confidence: 99%

“…Subsequently, pixels that directly illuminate the PM targets are set to zero. Although the two aforementioned initial procedures align with conventional methods [44,45,55], we focus on the third procedure.…”

Section: Projection Image Generationmentioning

confidence: 99%

Projection Mapping with a Brightly Lit Surrounding Using a Mixed Light Field Approach

Yasui,

Iwataki,

Ishikawa

et al. 2024

IEEE Trans. Visual. Comput. Graphics

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“…There have been a modest number of efforts to appropriate integral imaging for programmable lighting [32]- [34]. Early efforts have focused on select use cases (e.g., smallscale photography, microscopy) where illumination-specific modifications are not required and standard integral imaging hardware can be directly repurposed as lighting equipment.…”

Section: B Programmable Lightingmentioning

confidence: 99%

Theory and Implementation of Integral Illumination

Takeuchi

Nagamine

2022

IEEE Access

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Integral imaging, i.e., the use of lenticular optics to display stereoscopic/multiscopic images, is now being used in an array of products including glasses-free 3D displays. This paper describes integral illumination, an adaptation of integral imaging where fine-grained control of plenoptic light fields is used to realize new forms of programmable lighting. Relying on a combination of an imaging apparatus and custom lenticular optics, integral illumination devices can produce high-fidelity illusions of real and imagined light sources (e.g., spotlight, chandelier), replicating their illumination effects. Such devices have potential uses as ambient lighting fixtures, photography/videography equipment, components of artistic installations, etc. The paper will provide a general overview of integral illumination, describing its basic principles, hardware configuration, control mechanism, range of capabilities, and theoretical/practical limitations. We will also present a sample implementation of a working integral illumination device, describe its engineering details, report performance measurements, and discuss possibilities for future improvements and extensions.INDEX TERMS Integral illumination, integral imaging, plenoptic light field, programmable lighting.

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“…Popular methods include the coordinates (STUV) of intersection of rays with two fixed planes [32], a point on a 2D manifold and a direction (surface lightfields) and spherical coordinates [24]. STUV coordinates are simple to analyze and practical when dealing with systems such as flat displays which do not need to be analyzed for views from all around [52]. They also allow interpretation of the 4D lightfield tensor as a 2D array of 2D images.…”

Section: Light Field Imaging and Renderingmentioning

confidence: 99%

Widening Viewing Angles of Automultiscopic Displays Using Refractive Inserts

Lyu

Shen

Komura

et al. 2018

IEEE Trans. Visual. Comput. Graphics

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The viewing position is chosen to be at the boundary of the safe viewing zone of a conventional display (top view). Considerable aberrations are observed (white arrows) in the conventional solution. These errors are not present when refractive inserts are used (rightmost). Our prototype performs spatio-angular multiplexing of a 3840 × 2160 screen to achieve an angular resolution of 36 × 36 and a spatial resolution of approximately 106 × 60 (hence the prominent pixels in the photographs). Please see accompanying video.Abstract-Displays that can portray environments that are perceivable from multiple views are known as multiscopic displays. Some multiscopic displays enable realistic perception of 3D environments without the need for cumbersome mounts or fragile head-tracking algorithms. These automultiscopic displays carefully control the distribution of emitted light over space, direction (angle) and time so that even a static image displayed can encode parallax across viewing directions (lightfield). This allows simultaneous observation by multiple viewers, each perceiving 3D from their own (correct) perspective. Currently, the illusion can only be effectively maintained over a narrow range of viewing angles. In this paper, we propose and analyze a simple solution to widen the range of viewing angles for automultiscopic displays that use parallax barriers. We propose the use of a refractive medium, with a high refractive index, between the display and parallax barriers. The inserted medium warps the exitant lightfield in a way that increases the potential viewing angle. We analyze the consequences of this warp and build a prototype with a 93% increase in the effective viewing angle.

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Light field projection for lighting reproduction

Cited by 7 publications

References 25 publications

Projection Mapping with a Brightly Lit Surrounding Using a Mixed Light Field Approach

Projection Mapping with a Brightly Lit Surrounding Using a Mixed Light Field Approach

Theory and Implementation of Integral Illumination

Widening Viewing Angles of Automultiscopic Displays Using Refractive Inserts

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