prototype mushroom picker (IMAGE) Penn State Caption The prototype, which is designed to be integrated with a machine vision system, showed that it is capable of both picking mushrooms with a pneumatic system (top photo) and trimming them (bottom photo). Credit Penn State Usage Restrictions non commercial use only License Licensed 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.