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Huge leaps in AI have made facial recognition smarter than your brain

first_imgPropelling 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.” Facial recognition: Your face, your passwordThis 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.last_img read more

Soon online licence application to become available in all RTOs ARTOs

first_imgKolkata: The facility of applying online for driving licence will become available in all the Regional Transport Offices and Assistant Regional Transport Offices in the state before Durga Puja.This comes at the time when the state government has made production of driving licence mandatory to buy motorbikes, a step taken to check road accidents.According to a senior official of the state Transport department, at present there are as many as 50 offices across the state from where driving licence is given to applicants following necessary tests. Also Read – Rain batters Kolkata, cripples normal lifeOne more office of ARTO is going to be added soon, with one coming up at Katwa. With inauguration of the ARTO at Katwa that is scheduled on September 3, the total number of the offices that deal with driving licence will go up to 51.The official said that till date, there are 28 such offices where the facility of giving online application to get driving licence is available.”We have set a target to complete developing infrastructure in all the offices for the same and we are hopeful that the facility will become available in all the offices before Durga Puja,” the official said. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedExplaining the process of applying online for driving licence, another official said that one needs to log in to the website www.parivahan.gov.in and click on “Driving Licence Related Services”. Subsequently, an applicant has to proceed as directed to key in all necessary information, including some mandatory fields. Finally, an application number will get generated, with which the applicant has to visit the RTO or ARTO along with all relevant documents in his or her district, to give biometric details and get the date and time when he or she can sit for an online test.The applicant will pass the test if six out of ten answers are correct and gets the learner licence within two days. In case of failure, one can again sit for the test after seven days of the first one. The same process has to be followed online to get the date and time for the trial for the permanent licence, between the 30th and 180th day from the day the learner licence is issued.last_img read more

Why repeated dieting lead to weight gain

first_imgInstead of helping you slim down, repeated dieting may lead to weight gain because the brain interprets the diets as short famines and urges the person to store more fat for future shortages, a study says.The finding may explain why people who try low-calorie diets often overeat when not dieting and so do not keep the weight off.By contrast, people who do not diet would learn that food supplies are reliable and they do not need to store so much fat, the study said. Also Read – Add new books to your shelf“Surprisingly, our model predicts that the average weight gain for dieters will actually be greater than those who never diet,” said Andrew Higginson, Senior Lecturer at the University of Exeter in England.“This happens because non-dieters learn that the food supply is reliable so there is less need for the insurance of fat stores,” Higginson said.The study, published in the journal Evolution, Medicine and Public Health, is based on observations of animals such as birds. Also Read – Over 2 hours screen time daily will make your kids impulsiveAnimals respond to the risk of food shortage by gaining weight, which is why garden birds are fatter in the winter when seeds and insects are hard to find. The researchers studied a mathematical model of an animal that knows whether food is currently abundant or limited, but does not know when things will change, so must learn about the changeability before deciding how fat to be.The model showed that if food supply is often restricted (as it is when dieting) an optimal animal should gain excess weight between food shortages. The researchers’ model predicts that the urge to eat increases hugely as a diet goes on, and this urge would not diminish as weight is gained because the brain gets convinced that famines are likely.“Our simple model shows that weight gain does not mean that people’s physiology is malfunctioning or that they are being overwhelmed by unnaturally sweet tastes, Professor John McNamara of the University of Bristol in England said.“The brain could be functioning perfectly, but uncertainty about the food supply triggers the evolved response to gain weight,” McNamara noted.So how should people try to lose weight?“The best thing for weight loss is to take it steady. Our work suggests that eating only slightly less than you should, all the time, and doing physical exercise is much more likely to help you reach a healthy weight than going on low-calorie diets,” Higginson pointed out.last_img read more