infrared light
Fusion of Various Optimization Based Feature Smoothing Methods for Wearable and Non-invasive Blood Glucose Estimation
Wei, Yiting, Ling, Bingo Wing-Kuen, Chen, Danni, Dai, Yuheng, Liu, Qing
Recently, the wearable and non-invasive blood glucose estimation approach has been proposed. However, due to the unreliability of the acquisition device, the presence of the noise and the variations of the acquisition environments, the obtained features and the reference blood glucose values are highly unreliable. To address this issue, this paper proposes a polynomial fitting approach to smooth the obtained features or the reference blood glucose values. First, the blood glucose values are estimated based on the individual optimization approaches. Second, the absolute difference values between the estimated blood glucose values and the actual blood glucose values based on each optimization approach are computed. Third, these absolute difference values for each optimization approach are sorted in the ascending order. Fourth, for each sorted blood glucose value, the optimization method corresponding to the minimum absolute difference value is selected. Fifth, the accumulate probability of each selected optimization method is computed. If the accumulate probability of any selected optimization method at a point is greater than a threshold value, then the accumulate probabilities of these three selected optimization methods at that point are reset to zero. A range of the sorted blood glucose values are defined as that with the corresponding boundaries points being the previous reset point and this reset point. Hence, after performing the above procedures for all the sorted reference blood glucose values in the validation set, the regions of the sorted reference blood glucose values and the corresponding optimization methods in these regions are determined. The computer numerical simulation results show that our proposed method yields the mean absolute relative deviation (MARD) at 0.0930 and the percentage of the test data falling in the zone A of the Clarke error grid at 94.1176%.
Annke CPT500 security cam review: Built for business, but useful at home
If you prioritize performance over aesthetics, the Annke CPT500 delivers strong video quality, smart tracking, and flexible installation options that make it a solid choice for both commercial and home security setups. By the look of it, the Annke CPT500 3K Mini PT Speed Dome PoE Security Camera is primarily intended for commercial applications, such as monitoring parking lots, warehouses, and other large spaces. Annke uses the word "dome" in this camera's name, but the CPT500 doesn't really look like the typical enterprise-style camera that has the camera housed inside a glass or plastic dome for protection from vandals. That being said, its small size would be ideal for homeowners who need to monitor wide spaces or locations where you'd want to track a person or vehicle moving around in it; say, a driveway, walkway, or porch, for instance. If you're willing to embrace the Annke CPT500's industrial aesthetic, you'll get a range of features that make it an equally compelling option for residential use.
Reflectance Estimation for Proximity Sensing by Vision-Language Models: Utilizing Distributional Semantics for Low-Level Cognition in Robotics
Osada, Masashi, Ricardez, Gustavo A. Garcia, Suzuki, Yosuke, Taniguchi, Tadahiro
Large language models (LLMs) and vision-language models (VLMs) have been increasingly used in robotics for high-level cognition, but their use for low-level cognition, such as interpreting sensor information, remains underexplored. In robotic grasping, estimating the reflectance of objects is crucial for successful grasping, as it significantly impacts the distance measured by proximity sensors. We investigate whether LLMs can estimate reflectance from object names alone, leveraging the embedded human knowledge in distributional semantics, and if the latent structure of language in VLMs positively affects image-based reflectance estimation. In this paper, we verify that 1) LLMs such as GPT-3.5 and GPT-4 can estimate an object's reflectance using only text as input; and 2) VLMs such as CLIP can increase their generalization capabilities in reflectance estimation from images. Our experiments show that GPT-4 can estimate an object's reflectance using only text input with a mean error of 14.7%, lower than the image-only ResNet. Moreover, CLIP achieved the lowest mean error of 11.8%, while GPT-3.5 obtained a competitive 19.9% compared to ResNet's 17.8%. These results suggest that the distributional semantics in LLMs and VLMs increases their generalization capabilities, and the knowledge acquired by VLMs benefits from the latent structure of language.
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Artificial intelligence could help night vision cameras see color in the dark
Night vision is typically monotone--everything the wearer can see is colored in the same hue, which is mostly shades of green. But by using varying wavelengths of infrared light and a relatively simple AI algorithm, scientists from the University of California, Irvine have been able to bring back some color into these desaturated images. Their findings are published in the journal PLOS ONE this week. Light in the visible spectrum, similar to an FM radio, consists of many different frequencies. Both light and radio are part of the electromagnetic spectrum.
Bimolecular world for AI research
Scientists from EPFL (Ecole Polytechnique Federale de Lausanne) have developed nanosensors on AI, which allow researchers to observe different types of biological molecules without disturbing them. The world of biomolecules is rich in captivating interactions between many different agents such as intricate nanomachines (proteins), shape-shifting vessels (lipid complexes), chains of vital information (DNA), and energy fuel (carbohydrates). However, the ways in which biomolecules meet and interact to define an essential symphony are incredibly complex. Scientists at the Bionanophotonic Systems Laboratory in EPFL's School of Engineering have developed a new biosensor that can be used to monitor all major classes of nanoworld biomolecules without disturbing them. Their innovative method uses nanotechnology, metasurfaces, infrared light, and artificial intelligence.
Scientists develop an ultra-thin crystal film that could allow humans to see in the DARK
Regular glasses could soon double as night vision goggles after scientists developed an ultra-thin crystal film which acts as a filter to help humans see in the dark. The transparent metallic film contains nanometre-scale crystals that are hundreds of times thinner than human hair. It can be applied directly to a pair of spectacles and works by converting infrared light, which is invisible to the human eye, into images people can see. Nanotechnology: The transparent metallic film contains nanometre-scale crystals that are hundreds of times thinner than human hair. How it works: This graph illustrates how the ultra-thin film would be applied to glasses to allow wearers to see in the dark.
How To Prevent Facial Recognition Technology From Identifying You
Yesterday, The New York Times ran an alarming piece by Kashmir Hill about Clearview AI, a startup that allows third parties to quickly learn many details about you based on only seeing your face; The New York Times further reported that Clearview's technology is already in use by government agencies across the United States. Today, therefore, I am sharing some tips on how to prevent yourself from being recognized by facial recognition systems. I have personally utilized some of these techniques in test environments – and they worked. Others I have seen demonstrated. Keep in mind that not all of the tips that I provide below apply in all environments – normally, people seeking not to be recognized also do not want to stand out.
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Tiny drug-filled capsules motor around the body to target cancer cells
Tiny self-propelled capsules shed their outer shells and deliver drugs directly to tumour cells. These microrobots, demonstrated in mice intestines, could one day be targeted treatments for cancers in hard to reach places in the body. "When the capsule reaches the tumour, we can activate it, break the capsule, release the micromotors and they will move around the tumour area. That motion is very important for drug delivery," says Wei Gao at the California Institute of Technology in Pasadena. He and his team created the micromotors in a series of layers.
Lasers used in self-driving cars could be deployed on US-Mexico border
Technology built for self-driving cars could be the next step in the US fight against illegal immigrants arriving from Mexico. Lidar, a laser-based detection system, would cost far less to install than a border fence and could alert authorities to people trying to cross the border. Quanergy Systems, a start-up company based in California, presented its Lidar-based system at CES in Las Vegas. The firm claims it is better for the environment, cheaper to operate and'more capable' than Donald Trump's proposed physical wall. His plans for a border wall have been fiercely opposed by Democrats, forcing a shutdown of the US federal government.
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Can A Thousand Tiny Swarming Robots Outsmart Nature? Deep Look
Tiny swarming robots--called Kilobots--work together to tackle tasks in the lab, but what can they teach us about the natural world? More info, videos, and sources below DEEP LOOK: a new ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. About Kilobots How do you simultaneously control a thousand robots in a swarm?
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