Towards More Accurate 3D Object Detection for Robots and Self-Driving Cars
Tech Briefs » Photonics & Imaging
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1M ago
Robots and autonomous vehicles can use 3D point clouds from LIDAR sensors and camera images to perform 3D object detection. However, current techniques that combine both types of data struggle to accurately detect small objects. Now, researchers from Japan have developed DPPFA–Net, an innovative network that overcomes challenges related to occlusion and noise introduced by adverse weather ..read more
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Portable Laser-Guided Robotic Metrology (PLGRM)
Tech Briefs » Photonics & Imaging
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1M ago
Testing aircraft antennas is challenging since optimal tests are made after antenna installation. Aircraft are often taken to anechoic antenna test facilities which create long lead times, transportation hassle, and very high costs. Portable alternatives exist but often have compromised testing fidelity. Innovators at the NASA Glenn Research Center have developed the PLGRM system, which allows an installed antenna to be characterized in an aircraft hangar. All PLGRM components can be packed onto pallets, shipped, and easily operated ..read more
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Liquid Crystals Hold the Key to Shapeshifting Robots
Tech Briefs » Photonics & Imaging
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2M ago
Robots and cameras of the future could be made of liquid crystals, thanks to a new discovery that significantly expands the potential of the chemicals already common in computer displays and digital watches. The findings are a simple and inexpensive way to manipulate the molecular properties of liquid crystals with light exposure ..read more
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Light-Based Tech to Navigate the Moon
Tech Briefs » Photonics & Imaging
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2M ago
RMIT University’s Arnan Mitchell and University of Adelaide’s Dr. Andy Boes led an international team to review lithium niobate’s capabilities and potential applications in the journal Science. The team is working to make navigation systems that help rovers drive on the Moon — where GPS is unable to work — later this decade ..read more
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Smart Contact Lenses to Diagnose Glaucoma
Tech Briefs » Photonics & Imaging
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2M ago
Usually developing slowly over time, many cases of glaucoma are only picked up during routine eye tests, by which time lasting damage may already have been caused. But this could change in the future as academics from the U.K. and Türkiye have developed a contact lens which can detect changes in eye pressure which signal possible glaucoma ..read more
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Amateur Drone Videos Could Aid Natural Disaster Damage Assessment
Tech Briefs » Photonics & Imaging
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3M ago
After hurricanes and other disasters, it is becoming more common for people to fly drones to record the damage and post videos on social media. Those videos are a resource for rapid damage assessment. By using artificial intelligence, researchers are developing a system that can automatically identify buildings and make an initial determination of whether they are damaged and how serious that damage might be ..read more
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AI-Powered Self-Driving Microscopy Technique
Tech Briefs » Photonics & Imaging
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4M ago
As anyone who has ever skimmed a book or magazine can tell you, sometimes you don’t have to read every word to grasp the essence. Inspired by this notion, scientists are harnessing the power of artificial intelligence (AI) to enable a form of “speed reading” in microscopy. This could revolutionize the way researchers acquire data and allow them to preserve the integrity of precious samples ..read more
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Metasurfaces Control Polarized Light at Will
Tech Briefs » Photonics & Imaging
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4M ago
For years, researchers at SEAS have engineered metasurfaces to manipulate light based on its polarization state. That research has contributed to advances in polarization technology but metasurface technology has proven more powerful than even the researchers themselves realized. Now, they have uncovered hidden potential in these metasurfaces and demonstrated optical devices that manipulate light’s polarization state with an unprecedented degree of control ..read more
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Terahertz Energy Focused by Credit Card-Sized Device to Generate High-Resolution Images
Tech Briefs » Photonics & Imaging
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4M ago
Researchers have created a device that enables them to electronically steer and focus a beam of terahertz electromagnetic energy with extreme precision. This opens the door to high-resolution, real-time imaging devices that are hundredths the size of other radar systems and more robust than other optical systems ..read more
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High-Brightness Source of Coherent Light Spanning from the UV to THz
Tech Briefs » Photonics & Imaging
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4M ago
An international team of scientists reports a novel technique for a high-brightness coherent and few-cycle duration source spanning seven optical octaves from the UV to the THz ..read more
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