A typical watermark as it would be found on the paper (thermography).Credit: ยฉ Fraunhofer WKI Is it a sketch of historic significance, or a fake from the 19th century? Such questions are difficult even for art experts to answer. A...
By combining the information from the Kinect depth frame in (a) with polarized photographs, MIT researchers reconstructed the 3-D surface shown in (c). Polarization cues can allow coarse depth sensors like Kinect to achieve laser scan quality (b).Courtesy of...
The science of retweets1

The science of retweets

What's the best time to tweet, to ensure maximum audience engagement? Researchers at the University of Maryland have demonstrated that an algorithm that takes into account the past activity of each of your followers -- and makes predictions about...