Propelling the spread of facial recognition systems are huge leaps in artificial intelligence, the technology that seeks to give computers some of the ability, versatility and even creativity of human thinking. The biggest improvements have come through a specific area of AI called neural networks, inspired by the actual workings of human brain cells. Hardware and software improvements enabled an approach called deep learning — multiple layers of digital neurons that provide increasingly refined image analysis. Overall, it’s a profound change. Recognizing and interpreting human faces is so important to us that whole sections of our brains are devoted to it. As we teach computers those skills, our interactions with them become more convenient — less like submitting database commands and more like dealing with the natural world in which we evolved. On the flip side, facial recognition can undercut privacy as our anonymity evaporates. How neural networks work In a training phase, neural networks scrutinize vast numbers of images of faces, learning on their own what’s important in the recognition process. It’s more accurate than the old way, with programmers describing what eyes, noses and mouths look like. “Some layers capture color and texture and gradients,” said Amit Roy-Chowdhury, chair of electrical and computer engineering at the University of California, Riverside. “As you go deeper, they capture the shape of different parts of the object and ultimately the shape of the object itself.” This is part of a CNET special report exploring the benefits and pitfalls of facial recognition.After training, neural networks create a stripped-down mathematical representation for each face. That representation can be compared rapidly with those of other faces, letting a facial recognition system decide if a person entering an office is on an authorized employee list or raise an alert when a potential shoplifter also appears on police arrest records. To work well, facial recognition systems need images with well-illuminated, clear faces that give a neural network detailed, accurate data. That’s why passport photos require even lighting, plain backgrounds, neutral expressions and subjects facing straight toward the camera. “You try to make your input as consistent as possible so your analysis can be easier,” said Raj Minhas, leader of Xerox’s PARC Interaction and Analytics Lab. Errors in the system Facial recognition systems are getting better, but can still return errors. False positives match a face when no match should exist, such as when a person’s image isn’t in the database. A false negative occurs when the system misses a match it should have made. Top-notch facial recognition systems today are 99.7 percent accurate with good lighting conditions, a 2018 study from the National Institute of Standards and Technology found. One way to reduce errors is to tune the system by pushing some of the data apart to make it clearer for the neural net, reducing the likelihood of a false positive, said Marios Savvides, director of the CyLab Biometrics Center at Carnegie Mellon University. Savvides’ team is also blending modern AI with an older approach called correlation filters that allows neural networks to improve facial recognition accuracy when faces are obscured, poorly lit or facing away from the camera. Overall, Savvides’ team is able to reconstruct faces even when they’re looking away or obscured by breathing masks, he said. “We live in a time where AI can surpass the human brain’s capability,” he said. Another way to improve facial recognition is to pair it with other attributes, such as fingerprints, voice prints and other biometric data, or factors such as passwords. That might not work well when a system is just scanning people walking into a store, but it’s pretty common for controlled situations where people are logging into a network. Artificial intelligence (AI) Laptops Tech Industry Security 16 Share your voice Facial recognition: Get to know the tech that gets to… Comments Now playing: Watch this: Royal Caribbean Cruises has begun using facial recognition systems to speed passengers on their way through security and ID checks. Royal Caribbean Cruises You and your family are at the pier, giddy to board the massive cruise ship docked nearby. Ahead lies a week of sunny beaches, indulgent buffet feasts and lounging around doing absolutely nothing. And then you see the long lines for security, baggage and ID checks. It often takes 75 minutes for passengers to check in, but the Pool Deck looks a lifetime away. Royal Caribbean Cruises thinks it has the answer to getting passengers aboard faster: AI-powered facial recognition. In December, passengers started taking part in a pilot program at a company embarkation point in Ft. Lauderdale, Florida. Passengers take selfies with the company’s app, then at the port, an AI-powered database matches their faces. After a quick double-check, Royal Caribbean’s staff members direct guests to their cabins. The result: all-time high customer satisfaction. “We wanted to turn what was a cold transaction into a really welcoming moment,” said Jay Schneider, who runs the Miami company’s digital operations. The goal is to get passengers “from car to bar in 10 minutes.” Royal Caribbean Cruises is hardly alone. Facial recognition technology is used to spot friends on Facebook and unlock your iPhone. It’s been rolled out in airports, at cash registers and on home security systems. It may soon be inescapable. We live in a time where AI can surpass the human brain’s capability. Marios Savvides, director of the CyLab Biometrics Center at Carnegie Mellon University 5:11 Tags “We call it irrefutable identity,” said Vishal Gupta, chief technology officer at Unisys, which sells biometric authentication technology to the US Customs and Border Protection agency, among other customers. Unisys’ facial recognition system alone is 99 percent accurate, but with an approach it calls fusion that blends in other biometric factors, the company reaches 99.9 percent or 99.99 percent accuracy. Facial recognition promises convenience, but it isn’t without concerns. Privacy advocates worry it will usher in an era of Big Brother monitoring or companies secretly tracking you. It also raises questions about AI bias; if you train a system using images of mostly white people, a common practice, the system might have difficulty recognizing people of color. Bias can creep into data sets in other ways, too, based on the data sets that are used to train the AI. If the photos used to train an AI show women cooking, the system might automatically conclude that women are likely to be in the kitchen. “There’s no good way to know your data set is biased until you notice it failing,” said Broad Daylight security consultant Nick Merrill. “And by the time a biased algorithm wreaks real-world havoc, it’s too late.” Still, many companies are thinking about how to use facial recognition to enhance the experience of their customers, visitors, patients and guests. They want facial recognition to make interactions easier, not creepy. Hello, hospital Northwell Health, which serves 3.5 million patients and is the largest health care provider in New York, is using a facial recognition program to streamline patient visits, reduce clerical errors and ultimately improve health. Its system, whose hardware and software are made by RightPatient, uses sophisticated cameras that photograph faces and irises of patients. When a patient arrives for a checkup, the receptionist’s computer confirms the patient’s identity and pulls up his or her chart for the doctor. If there’s no record, the patient is enrolled with an ID check. We’re literally putting a face with a name. Laura Semlies, vice president, Northwell Health The system offers a number of advantages besides a smoother arrival in an office with less fumbling for ID. It’s less susceptible to problems of duplicate records for the same patient. If you’re already in the system, it’ll recognize you even if you got married and changed your name. Identity theft — think people trying to snatch prescriptions — is reduced because you can’t fake a face. In emergencies like car accidents, the system would be able to identify an unconscious patient so that nurses and doctors could find medical histories and family contacts. “We’re literally putting a face with a name,” said Laura Semlies, vice president of digital patient experience. “It just makes for a better clinical relationship.” Biometric data is protected with encryption and is subject to the same strict privacy limits as other health data, she said. Only about 12,000 of Northwell’s 3.5 million patients are enrolled so far, but now the network is spreading it more broadly around its facilities. Facial recognition ahoy Royal Caribbean Cruises has twice as many passengers as Northwell has patients, and more of them, too, will see facial recognition as the program expands, project leader Schneider said. After finishing selfie and passport-scanning homework, passengers using the optional system can head to the port. As they arrive, passengers see a live view of themselves captured by cameras arrayed across the entrance. They’re arranged to avoid airport-style bottlenecks. Behind the scenes, a computer matches their faces to the ones on record. Once there’s a match, passengers see a green box around their faces on the screens. A human agent verifies the matches, greets the passengers by name and checks their passports. Royal Caribbean is required to have passenger photos, so the facial recognition system doesn’t significantly add to the data the company has. The company deletes passenger photos when the cruise ends, said Schneider, the cruise company’s digital chief. The result is a system that whisks passengers aboard and gets the holiday started more quickly than before. “Guests didn’t feel like they were on vacation until day 2,” Schneider said. “We wanted to give you that day back.” Originally published at 5:00 a.m. PT.
Touted as one of the biggest technology IPOs in the US since Alibaba, Snap — the parent company of the popular photo-sharing app Snapchat — has priced its initial public offering at $17 a share, hoping to raise nearly $3.4 billion, media reports said.Read: Snapchat parent Snap Inc files for $3 billion IPOSnap, with a reported market value of nearly $24 billion, was set to begin trading on the New York Stock Exchange on Thursday, Los Angeles Times reported late on Wednesday.Founded by college dropout Evan Spiegel, Snap Inc’s IPO is one of the high-profile stock debuts in the recent years along with Chinese e-commerce company Alibaba (that raised nearly $22 billion in 2014) and social media giant Facebook (which raised $16 billion in 2012).”Snap’s IPO has spurred great interest because few tech companies went public last year amid a shaky market, and none have debuted on the stock market this year,” the report said.”It’s also the first to go public among a class of companies, including Uber, Airbnb and Pinterest, that have been valued at more than $10 billion while still privately held,” it added.Launched in 2011, Snapchat currently has 158 million daily users.Snapchat aims to derive most of its revenue from advertising where it will compete against Google, Facebook and Twitter.Snap Inc recently rolled out major changes in its app that will make it easier to navigate the app with a universal search bar that’s always accessible at the top of the app.The much-anticipated video recording ‘Spectacles’ from Snapchat are also available online for users in the US at $129.99.Snapchat ‘Spectacles’ record video and pair to user’s phone over Bluetooth or WiFi which can then be uploaded to the user’s Snapchat account.According to reports, ‘Spectacles’ come with a charging case and cable in three shades including black, coral red and teal blue.
In July 2017, Jet Airways had asked its junior pilots, who joined the brand in 2016, to take a 30 percent pay cut or leaveReuters file [Representational Image]Jet Airways Ltd said on Monday it has grounded four more planes and would delay paying interest on maturing debt in a fresh sign of deepening liquidity crisis engulfing the Indian carrier saddled with over $1 billion debt.India’s second-largest carrier has delayed payments to its pilots, suppliers and lessors for months and defaulted on loans, as it battles intensifying competition, a weak rupee and rising fuel costs.The airline said it will delay paying interest to its debenture holder, due March 19, owing to financial constraints.Jet did not immediately respond to Reuters’ request for comment on payment-related details.Meanwhile, the airline grounded four more aircraft on Monday, taking the number of planes tied down to 41, or more than a third of its entire fleet.Founder and chairman Naresh Goyal, who transformed Jet into India’s biggest full-service carrier from its humble start 25 years ago, has said it is charting out a bailout plan, led by state-run banks and Abu Dhabi’s Etihad Airways.An official with State Bank of India (SBI), Jet’s largest creditor, said on Friday that a consortium of lenders should reach a final resolution plan to rescue the embattled airline in one week.Shares in Jet, which fell 15 per cent so far this year, were up 0.15 per cent, as of 0728 GMT.
Katie Holmes and Jamie Foxx at the 2019 Met GalaTwitterJamie Foxx and Katie Holmes have called off their six-year-long relationship. In fact, a source has confirmed on the same that they apparently separated back in May! What further validates the split is the fact that Foxx was seen stepping out of a pub with singer Sela Vave. Shocking reports of Foxx holding hands with the up-and-coming singer Sela Vave as they left a nightclub got the tongues wagging. Soon after that, it was confirmed that Jamie Foxx and Katie Holmes had split.As per a report on TMZ, Vave is Foxx’s new talent as he is a record producer apart from being an actor and singer. The two attended Lil Pump’s 19th birthday party at Bootsy Bellows in West Hollywood. Meanwhile, Holmes was chilling in the Big Apple, keeping herself as far away from Foxx and Hollywood. On the same, a source did add, “She’s just a girl he’s helping out, a young singer.” However, the fact that the otherwise fiercely private actor didn’t mind holding hands of his up-and-coming talent, did make everyone wonder if there is something more brewing here.Katie Holmes and Jamie Foxx first made headlines back in 2013. It was reported by In Touch magazine that Holmes and Foxx were taking their friendship to the next level. Although the actor instantly shut down rumours by stating that there is nothing cooking here. He told Entertainment Tonight, “[The rumours] are one hundred per cent not true. n fact, it’s quite hilarious because we simply danced at a charity event along with a lot of other people.” However, over the years that followed, romance rumours continued to take over Hollywood as the couple was often sighted holding hands and spending time together.Another picture of the couple holding hands while going through some work stuff at a recording studio further reignited all the rumours of them being together. This happened in 2015. Next, they were once again spotted spending Valentine’s Day together in 2017 by engaging in some sporty activities. Pictures of them from the pre-Grammys gala in January 2018 amplified all the rumours as they were seated together, with eyes only for each other. Be it in Miami or New York City or Los Angeles, Jamie and Katie’s whirlwind but private romance continued to make everyone believe that they were going super strong. Last December, as Katie celebrated her 40th birthday, Jamie was by her side as they enjoyed a good time at Serendipity in NYC. Even Katie’s mother Kathleen Slothers-Holmes was at the intimate birthday celebration. Katie Holmes and Jamie FoxxTwitterThe former couple were even spotted kissing in a Malibu beach back in 2018. Their relationship took a new level as they were holding hands and taking a midnight stroll in LA along with Foxx’s daughter Corinne Foxx. Lastly, they were spotted being in pretty good shape as they arrived for the 2019 Met Gala together.
State minister Nasrul Hamid on Wednesday termed the current problem in gas supply to CNG stations temporary saying that the situation will get normal within a day.He made the remark as CNG refuelling stations in the city have been shut following the start of maintenance work at Sylhet’s Bibiyana gas field, the country’s largest gas field.Nasrul was talking to reporters at his office.Titas Gas transmission and Distribution Company suddenly asked all the CNG stations to keep their operation suspended for 24 hours from zero hour Wednesday to facilitate maintenance works at Bibiyana, causing trouble to many in refuelling their cars.Many public transports also faced the similar problem as they could not refuel their vehicles.Nasrul said the CNG stations will remain off for 24 hours until zero hour Thursday. “So, this is for a very short period of time.”About the trouble being experienced by the CNG-run motor vehicles in refuelling, the junior minister said it was scheduled much earlier to keep the CNG station closed and a notice was also served to the stations concerned apart from informing the public through media.He advised those using CNG in their vehicles to use liquid fuel like petrol, octane or diesel.
Combining pulsed laser with electron gun allows for capturing fast motion of nanoparticles in a liquid PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Journal information: Science Advances This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Explore further Citation: Using four-dimensional electron microscopy to track diffusion of nanoparticles in a liquid (2017, August 28) retrieved 18 August 2019 from https://phys.org/news/2017-08-four-dimensional-electron-microscopy-track-diffusion.html A team of researchers at Caltech has developed a way to capture on film the superfast propulsive motion of Brownian objects, particularly those at the nanoscale. In their paper published on the open-access site Science Advances, the team describes using four-dimensional electron microscopy techniques to capture real-time imagery of gold nanoparticles as they diffused in a liquid. Play Tracing photoinduced nanoparticle diffusion. Credit: Xuewen Fu 4D imaging of nanoparticle diffusion in liquid. Credit: Xuewen Fu More information: Xuewen Fu et al. Photoinduced nanobubble-driven superfast diffusion of nanoparticles imaged by 4D electron microscopy, Science Advances (2017). DOI: 10.1126/sciadv.1701160 Tiny particles suspended in hot liquid are observed to move in a seemingly random fashion. Such movement was noted by Robert Brown in the early 19th century, a phenomenon thus called Brownian motion. In more recent times, researchers have focused on Brownian motion as it relates to even smaller particles—micro and nano particles. Unfortunately, due to technological limitations, it was previously impossible to capture the action on film—instead, researchers have pieced together stills taken using an electron microscope. In this new effort, the researchers report on a technique they have developed that overcomes this problem, offering a new way to study diffusion of extremely tiny particles.The new approach involves the use of four-dimensional microscopy, which entails using both extremely fast laser pulses and transmission electron microscopy—it is based, the researchers note, on a pump-probe working mechanism. The first of two lasers excites the particles, while the second takes a picture of the action—it happens so quickly that the results can be viewed as video.In their experiments, the researchers fired a first pulse at gold nanoparticles, then fired a second pulse that captured images of tiny bubbles forming near the surface of the nanoparticles and exciting them. Increasing the energy of the first pulse, the team noted, resulted in merging many of the tiny bubbles, causing different types of movement by the nanoparticles. The researchers suggest their technique could be used by other researchers to study dispersion systems, particularly those that are out of equilibrium. It could also lead the way, perhaps, to the development of light-powered nanorobots working inside liquid systems. Play Results of nanoparticle experiment. Credit: Xuewen Fu © 2017 Phys.org