The New York Times reports on computerized surveillance systems that it says can protect hospital patients, watch for criminals or invade your privacy.
The computers cannot do anything more than officers who constantly watch surveillance monitors [of prisoners] under ideal conditions. But in practice, officers are often distracted. When shifts change, an observation that is worth passing along may be forgotten. But machines do not blink or forget. They are tireless assistants.
The enthusiasm for such systems extends well beyond the nationâ€™s prisons. High-resolution, low-cost cameras are proliferating, found in products like smartphones and laptop computers. The cost of storing images is dropping, and new software algorithms for mining, matching and scrutinizing the flood of visual data are progressing swiftly.
A computer-vision system can watch a hospital room and remind doctors and nurses to wash their hands, or warn of restless patients who are in danger of falling out of bed. It can, through a computer-equipped mirror, read a manâ€™s face to detect his heart rate and other vital signs. It can analyze a womanâ€™s expressions as she watches a movie trailer or shops online, and help marketers tailor their offerings accordingly. Computer vision can also be used at shopping malls, schoolyards, subway platforms, office complexes and stadiums. […]
Google has also introduced an application called Goggles, which allows people to take a picture with a smartphone and search the Internet for matching images. The companyâ€™s executives decided to exclude a facial-recognition feature, which they feared might be used to find personal information on people who did not know that they were being photographed. […]
Google could have put face recognition into the Goggles application; indeed, many users have asked for it. But Google decided against it because smartphones can be used to take pictures of individuals without their knowledge, and a face match could retrieve all kinds of personal information â€” name, occupation, address, workplace.