LiDAR-derived digital holograms for automotive head-up displays

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

doi:10.1364/oe.420740

Cited by 13 publications

(11 citation statements)

References 35 publications

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“…Customizable 2D windshield displays have been developed to enhance the information intake of the driver. [ 112 ] However, the impact of AR on the driver while operating a vehicle on public roads is not fully understood. [ 230 ] Full AR in 3D with depth perception has been created to project the visual information on the road within the driver's gaze in AR applications.…”

Section: Discussionmentioning

confidence: 99%

“…[ 111 ] The holograms are computationally created, and are layered at different distances within the observer's replay field from near‐eye and extending to the far field. [ 112 ] Positive lenses could be utilized as Fourier transformers for phase transformation. [ 113 ] A layered hologram based on the angular tilting concept and a graphic rendering approach generated a 3D hologram.…”

Section: Holographic Hudsmentioning

confidence: 99%

“…[ 116 ] This technology has the potential to be utilized in AR applications. [ 112 ] This algorithm‐only approach was utilized to display replay field results with multiple depths by using a stochastic gradient decent (SGD) algorithm with complex loss function. [ 129 ] Previous algorithms calculated the loss function generally by comparing the obtained amplitude of the reconstructed image with the target images at different depth planes.…”

Section: Holographic Hudsmentioning

confidence: 99%

“…iv) The image hologram is stored in the hard drive. [112,170] Hologram Generation: The GS algorithm was the first method to optimize phase retrievals. [85] The algorithm operates by comparing phases of the several original images present in an image and their replay fields.…”

Section: Test Of the Fresnel And Gabor Superlens Functionsmentioning

confidence: 99%

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Automotive Holographic Head‐Up Displays

Skirnewskaja

Wilkinson

2022

Advanced Materials

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Driver's access to information about navigation and vehicle data through in‐car displays and personal devices distract the driver from safe vehicle management. The discrepancy between road safety and infotainment must be addressed to develop safely operated modern vehicles. Head‐up displays (HUDs) aim to introduce a seamless uptake of visual information for the driver while securely operating a vehicle. HUDs projected on the windshield provide the driver with visual navigation and vehicle data within the comfort of the driver's personal eye box through a customizable extended display space. Windshield HUDs do not require the driver to shift the gaze away from the road to attain road information. This article presents a review of technological advances and future perspectives in holographic HUDs by analyzing the optoelectronics devices and the user experience of the driver. The review elucidates holographic displays and full augmented reality in 3D with depth perception when projecting the visual information on the road within the driver's gaze. Design factors, functionality, and the integration of personalized machine learning technologies into holographic HUDs are discussed. Application examples of the display technologies regarding road safety and security are presented. An outlook is provided to reflect on display trends and autonomous driving.

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Section: Discussionmentioning

confidence: 99%

Section: Holographic Hudsmentioning

confidence: 99%

Section: Holographic Hudsmentioning

confidence: 99%

Section: Test Of the Fresnel And Gabor Superlens Functionsmentioning

confidence: 99%

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Automotive Holographic Head‐Up Displays

Skirnewskaja

Wilkinson

2022

Advanced Materials

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“…The pre-pressed glass enters the autoclave, where the residual air is sucked out [20][21]. The glass is checked for defects and then goes to another process, where other parts are applied to the glass, such as polyurethane profiles, which are glued to the glass with the help of polyurethane adhesives [22][23].…”

Section: Lamination Of Windshield and Further Processing Of The Winds...mentioning

confidence: 99%

Production of Head-Up Display windshield and its relation with the image quality

Mareška¹,

Kordová²,

Míka³

2022

ToTS

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Previously, car windshields served as a barrier against the wind or to prevent the driver from flying outside the vehicle in a collision. The windshield is therefore laminated and consists of two glasses and an intermediate layer consisting of the so-called polyvinyl butyral foil. The latest trend in car windshields is to consider the windshield as a display and project key information onto the windshield. Such glasses are called head-up displays. Various information such as car speed or route can be projected. The driver thus constantly maintains contact with the road, which increases driving safety. Head-Up Display quality is key to display information correctly without negative effects. Such a negative effect is if the displayed information is duplicated, which is called ghosting or double-image. This effect is undesirable and ranks first among the defects we detect in Head-Up Displays. The aim of this article is to compare different production technologies with a focus on the quality of HUD projection and on the double-image occurrence. The production technology enabling optimal HUD image quality is discussed as well. The article deals with a summary of HUD production technologies, focusing on the most common defect that occurs in HUD windshields and which reduce the overall quality of the product. The article evaluates and summarizes the key findings from the perspective of the end customer, but also in terms of the production process. For the driver, as an end customer, it is a source of information according to which he can orient himself in the offer of car equipment. It can be useful for production or development people in terms of processability and process costs. At the same time, the benefits and negatives of using windshields with a Head-Up Display are discussed.

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Metasurface‐Based Structured Light Sensing Without Triangulation

Li,

et al. 2023

Advanced Optical Materials

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Structured light (SL) sensing technology, based on the triangulation principle, is widely employed for depth perception in various applications such as face recognition, human‐computer interaction, machine vision, and more. In this approach, the baseline length, which refers to the distance between the projection device and the camera, is a critical parameter that affects depth measurement and system miniaturization. Recently, metasurfaces have emerged as promising devices for constructing compact optoelectronic systems due to their excellent performance in wavefront modulation of light and ultra‐thin characteristics. In this study, a metasurface‐based monocular SL depth detection scheme is proposed that incorporates a specially designed 3D holographic projection. Under this projected light field, the entire 3D space is labeled, and depth information can be obtained without considering the baseline length, which can further reduce the volume of SL systems. Additionally, a template‐matching algorithm based on correlation coefficient analysis is developed and experimentally demonstrates its feasibility by precisely positioning objects. It is believed that this work opens up a new perspective for compact, lightweight, and flexible design of SL sensing systems, and has a promising future in quantitative detection, automatic location, and industrial measurement.

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LiDAR-derived digital holograms for automotive head-up displays

Cited by 13 publications

References 35 publications

Automotive Holographic Head‐Up Displays

Automotive Holographic Head‐Up Displays

Production of Head-Up Display windshield and its relation with the image quality

Metasurface‐Based Structured Light Sensing Without Triangulation

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