Individual leaf identification from horticultural crop images based on the leaf skeleton. - Liankuan Zhang; Paul Weckler; Ning Wang; Deqin Xiao; Xirong Chai (Comput. Electron. Agric., 2016)

A Canopy Density Model for Planar Orchard Target Detection Based on Ultrasonic Sensors. - Hanzhe Li; Changyuan Zhai; Paul Weckler; Ning Wang; Shuo Yang; Bo Zhang (Sensors, 2017)