Accelerated Augmented Reality Holographic 4k Video Projections Based on Lidar Point Clouds for Automotive Head‐Up Displays

Skirnewskaja, Jana; Montelongo, Yunuen; Sha, Jinze; Wilkes, Phil; Wilkinson, Timothy D.

doi:10.1002/adom.202301772

Cited by 3 publications

(1 citation statement)

References 62 publications

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“… 46 LiDAR also enables the detection of surfaces, which can be useful for locative and AR gaming where this can be harnessed to more precisely and accurately position AR content in the real world. 47 The technology also has potential in generating holograms of physical objects normally invisible to the user, 48 a functionality that may be relevant in certain AR game designs. We predict that these advances in AR-related hardware technology help position AR content more precisely in the real world, creating a stronger and more immersive illusion for the user.…”

Section: Trends Relevant For Location-based Gaming – a Review Of The ...mentioning

confidence: 99%

Augmented future: tracing the trajectory of location-based augmented reality gaming for the next ten years

Laato,

Söbke,

Baer

2024

I-Com

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Location-based games are a highly technology-dependent game genre that has witnessed an exponential increase in popularity with the democratisation of smartphones as well as ubiquitous mobile data and access to satellite navigation. Moving forward into the future, location-based games can be expected to evolve as the technologies underlying the genre improve. In this conceptual work, we review the current state of the art in location-based games, and identify key trajectories and trends. We discovered 12 trends, based on which we jump ten years into the future and evaluate how current technology trends may end up influencing location-based gaming. For example, we propose that in the year 2035 through improvements in map data services and sensor data coverage, we will see locative games that are increasingly connected to elements in the physical world. We also expect to see gameplay that moves away from solely taking place on a smartphone screen to the adoption of multiple forms of interactions with location-based game worlds, especially as head-mounted displays and other wearables become more commonplace.

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Section: Trends Relevant For Location-based Gaming – a Review Of The ...mentioning

confidence: 99%

Augmented future: tracing the trajectory of location-based augmented reality gaming for the next ten years

Laato,

Söbke,

Baer

2024

I-Com

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Recording Reflection Volume Holographic Gratings with Enhanced Performance by Two‐Stage Photopolymers Containing Bifunctional Monomers

Guo,

Wang,

Zhang

et al. 2024

Macro Chemistry & Physics

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A holographic optical waveguide (HOW) is an optimal solution for augmented reality (AR) displays, in which reflection volume holographic gratings are core optical elements. In this study, five high‐refractive‐index (≈1.6) bifunctional acrylate monomers (TPBSAs) are designed and synthesized. A series of two‐stage photopolymers are prepared using TPBSAs as writing monomers. Among them, one containing 9 wt.% TPBSA‐3 shows the best holographic recording performance with a sensitivity as high as 26.59 cm mJ−1. Using it as the recording medium, a reflection VHG can be obtained with high spatial frequency (5634 lines per mm), diffraction efficiency (97.14%), refractive index modulation (0.029), and good transparency within 400−800 nm after photobleaching. Furthermore, a HOW capable of achieving virtual and real image fusion is fabricated.

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DMD as a pseudo-pixel array for long-range high-speed LIDAR

Hawthorne,

McDonald,

Park

et al. 2024

Laser Radar Technology and Applications XXIX

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Long-range, high-speed, free-space LIDAR systems face challenges from ambient background noise. Maximizing the signal-to-noise ratio (SNR) is vital for extending the range and increasing the scanning speed. One effective strategy in steered LIDAR systems is using field-of-view (FOV) filtering to retain signals and suppress noise. Pixel-based approaches with sensitive detector arrays are costly, especially at near-infrared wavelengths. This work employs a digital micromirror device (DMD) as a pseudo-pixel array. It redirects signal light to a single-pixel detector while routing noise light to a beam dump. This work explores a simple experimental setup to explore the DMD's range improvement potential. Ambient noise rejections ratios greater than 20 were exhibited using a 6×6 pseudo-pixel array on the DMD, resulting in a 1.97 fold range improvement in a theoretical LIDAR system. This approach thus offers a means of enhancing long-range, high-speed, free-space LIDAR systems. Introduc onLIDAR is a technology which has seen rapid integration into different fields ranging from autonomous vehicles 1 , defence 2 and metrology 3 . Part of what has driven this integration is the growing commercial availability of extremely sensitive detectors such as single-photon avalanche diodes (SPADs) and silicon photomultipliers (SiPMs) 4 . Another desirable property of a LIDAR system which will further drive integration is for the system to be solid-state i.e. have no moving parts. Such an approach offers greater resilience to vibrations, improved reliability, faster steering and be made more compact than conventional mechanical approaches 5 . A solid-state approach does however face steep hurdles, particularly in achieving long ranges at high framerates and resolutions.The fundamental challenge in highly sensitive free-space LIDAR is the strong ambient background noise presented by sky radiance and the sun. Filtering out this noise is thus essential for long-range applications. A convenient method for achieving this is to collect light using the same steering system as the transmitted beam. However, solid-state steering approaches often struggling with aperture sizes and throughput efficiencies 5 , limiting the ability of the system to detect the small number of returned photons at long distances.A practical alternative approach is using an array of detectors and imaging the observed field-of-view (FOV) onto them. Each individual detector only sees a small part of the total FOV meaning only a small part of the total noise is incident on each. As the signal will be concentrated at a known part of the FOV in a steered LIDAR system, the entire signal will be incident on a single detector. This is visualised in figure 1. In principle, this approach offers ambient light rejection that scale linearly with the number of detectors that make up the array.However, using an array of highly sensitive detectors can bring with it its own issues. Photodiodes are well suited for an array approach, with both avalanche photodiodes (APDs) and SPADs cap...

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Accelerated Augmented Reality Holographic 4k Video Projections Based on Lidar Point Clouds for Automotive Head‐Up Displays

Cited by 3 publications

References 62 publications

Augmented future: tracing the trajectory of location-based augmented reality gaming for the next ten years

Augmented future: tracing the trajectory of location-based augmented reality gaming for the next ten years

Recording Reflection Volume Holographic Gratings with Enhanced Performance by Two‐Stage Photopolymers Containing Bifunctional Monomers

DMD as a pseudo-pixel array for long-range high-speed LIDAR

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