Optical setup (IMAGE) Optica Caption Researchers developed a new approach that allows 3D measurements to be acquired with a computational imaging approach known as quantum ghost imaging. A SPAD array detector, shown on the left of the optical setup, is key to the new technique. Credit Fraunhofer IOSB/indigo Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.