AUTOSYNCHRONOUS TRIANGULATION FOR PLANT MONITORING

摘要

Autosynchronous triangulation scanning is a technique well suited for a variety of near to mid-range 3D scanning applications. A continuous wave laser source is used to accurately measure both intensity and range information over a wide (30° x 30°) field of view with sub-millimeter precision, at distances up to 5m from the sensor. Neptec Design Group designed, developed, produced and supported the Laser Camera System (LCS) based on the autosynchronous principle. Neptec, in collaboration with the Controlled Environment Systems Research Facility at the University of Guelph, Ontario, Canada, sought to determine the feasibility of the application of 3D metrology for the greenhouse industry. An LCS was used to non-destructively measure the stem length and leaf area of plants. The LCS measurements are compared with destructive harvests and demonstrated the ability to use 3D scanning technology to measure these parameters. This technology is being developed with direct applications to plant monitoring for long-duration space exploration, where the nondestructive evaluation of plant health will be a critical task.