Optical setup (IMAGE) Optica Caption Researchers have developed a new high-speed way to detect the location, size and category of multiple objects without acquiring images or requiring complex scene reconstruction. The proof-of-concept setup for image-free single-pixel object detection (SPOD) is shown. Credit Lintao Peng, Beijing Institute of Technology 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.