Crowdsourcing image analysis for plant phenomics to generate ground truth data for machine learning. - Naihui Zhou; Zachary D. Siegel; Scott Zarecor; Nigel Lee; Darwin A. Campbell; Carson M. Andorf; Dan Nettleton; Carolyn J. Lawrence-Dill; Baskar Ganapathysubramanian; Jonathan W. Kelly; Iddo Friedberg (PLoS Comput. Biol., 2018)