Torralba said he and Freeman didn’t have any particular application in mind when they started down this road. Or they can turn the leaves into a “visual microphone,” magnifying their vibrations to listen to what’s being said.Īlong with obvious military and spying applications, researchers rattle off possible uses in self-driving cars, robotic vision, medical imaging, astronomy, space exploration and search-and-rescue missions. This summer, they demonstrated that they can film a houseplant and then reconstruct a three-dimensional image of the rest of the room from the disparate shadows cast by the plant’s leaves. Last fall, they and their collaborators reported that they can spot someone moving on the other side of a corner by filming the ground near the corner. In their first paper, Freeman and Torralba showed that the changing light on the wall of a room, filmed with nothing fancier than an iPhone, can be processed to reveal the scene outside the window. The pair discovered just how much visual information is hiding in plain sight. “We figured out ways to pull out those images and make them visible,” Freeman explained. ![]() ![]() These images, as much as 1,000 times dimmer than everything else, are typically invisible to the naked eye. The experience alerted him and his colleague, Bill Freeman, both professors at the Massachusetts Institute of Technology, to the ubiquity of “accidental cameras,” as they call them: windows, corners, houseplants and other common objects that create subtle images of their surroundings.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |