Road Safety: 3D holographic Display

Researchers have developed the initial LiDAR-based augmented reality head-up screen to be used in vehicles. Tests on a prototype version of the technology imply that it might improve road safety by seeing¬†‘ items to alert of possible dangers without distracting the driver.

The technology, developed by researchers in the University of Cambridge, the University of Oxford, and University College London (UCL), relies on LiDAR (light detection and ranging), also utilizes LiDAR data to make ultra-high-definition holographic representations of street objects that are beamed straight into the driver’s eyes, rather than 2D windscreen projections utilized in the majority of head-up screens.

Though the technology hasn’t yet been analyzed in a vehicle, early evaluations, based on information gathered from a busy road in central London, showed the holographic images show up in the driver’s field of view by their real position, producing an augmented reality. This might be especially useful where items like road signs are concealed by big trees or trucks, by way of instance, permitting the driver to see¬†through’ visual obstacles.

“Head-up screens are being integrated into linked vehicles, and typically project information like gas or speed amounts right on the windscreen in front of the driver, who has to keep their eyes on the street,” said lead author Jana Skirnewskaja, a Ph.D. candidate out of Cambridge’s Department of Engineering.

Skirnewskaja and her colleagues based their method on LiDAR, a remote sensing system that operates by sending a laser pulse to gauge the distance between the scanner and also an item. LiDAR is widely utilized in agriculture, archaeology, and geography, however, it’s also being trialed in autonomous vehicles such as obstacle detection.

Co-author Phil Wilkes, a geographer who generally uses LiDAR to scan tropical woods, scanned the entire road utilizing a technique known as terrestrial laser cutting. Countless pulses were shipped from multiple places along Malet Street. The LiDAR data was then combined with point cloud data, establishing a 3D version.

“In this manner we could sew the clocks together, creating a complete scene, which does not only catch trees, but cars, trucks, people, signs, and whatever else you’d see on a normal city street,” said Wilkes.

Once the 3D version of Malet St has been finished, the investigators then altered different objects on the road into holographic projections. The LiDAR data, in the kind of point clouds, was processed by hitting algorithms to recognize and extract the goal objects. Another algorithm has been utilized to convert the goal objects to computer-generated diffraction patterns. These data points have been implemented to the optical arrangement to project 3D holographic objects to the driver’s field of view.

The optical setup is effective at projecting numerous layers of holograms with the support of innovative algorithms.

By way of instance, a hidden road sign would seem like a holographic projection relative to the real position supporting the obstruction, behaving as an alarm mechanism.

In the future, the investigators expect to enhance their method by personalizing the design of their head-up screens and also have generated an algorithm capable of projecting several layers of unique objects. These layered holograms may be freely organized in the motorist’s vision space. As an instance, at the initial layer, a traffic sign at a further space could be projected in a smaller size. At the next layer, a warning signal at a nearer space could be shown in a larger size.

“This layering technique offers an augmented reality experience and naturally alerts the driver,” explained Skirnewskaja. As an example, the motorist’s vital health indications could be projected at a desirable location of their head-up screen.

“Panoramic holographic projections might be an important addition to existing security measures by demonstrating road items in real-time. Holograms behave to alert the motorist but aren’t a diversion.”

The investigators are currently working to miniaturize the optical components used within their holographic setup so that they may fit into a vehicle. When the installation is finished, automobile tests on public streets in Cambridge are going to be completed.

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