A laser scanning instrument for measuring crop geometry Export

@article{Walkl89, abstract = {An optical scanning instrument is described for measuring crop geometry based on the probability of a light beam intersecting plant surfaces within a crop. The scanner design incorporates a low power helium-neon laser in combination with a back-scattered light collection system in a range finder configuration which enables crop geometry measurement in any given direction. The scanner has been developed specifically to enable fast parametrization of crop geometry for the purpose of particle impaction and deposition modelling, but could also find applications in other areas of crop research, e.g. photosynthesis, aerodynamic resistance and growth. An analysis of light transmission through a crop canopy based on a negative binomial probability model is presented to enable the calculation of both the crop area density vector and frequency vector of plant surface. Some barley crop measurements are presented and these are compared with auxiliary scalar measurement of crop area density from a destructive sample.}, author = {Walklate, P. J.}, citeulike-article-id = {3206547}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/0168-1923(89)90031-2}, citeulike-linkout-1 = {http://www.sciencedirect.com/science/article/B6V8W-4894NNK-BF/2/d18bb0354a56c543038386b8b802ea23}, doi = {10.1016/0168-1923(89)90031-2}, journal = {Agricultural and Forest Meteorology}, keywords = {3d, digitized, geometry, laser, plant, reconstruction}, month = {June}, number = {4}, pages = {275--284}, posted-at = {2008-09-08 18:43:20}, priority = {2}, title = {A laser scanning instrument for measuring crop geometry}, url = {http://dx.doi.org/10.1016/0168-1923(89)90031-2}, volume = {46}, year = {1989} }

TY - JOUR ID - Walkl89 L3 - citeulike-article-id:3206547 N2 - An optical scanning instrument is described for measuring crop geometry based on the probability of a light beam intersecting plant surfaces within a crop. The scanner design incorporates a low power helium-neon laser in combination with a back-scattered light collection system in a range finder configuration which enables crop geometry measurement in any given direction. The scanner has been developed specifically to enable fast parametrization of crop geometry for the purpose of particle impaction and deposition modelling, but could also find applications in other areas of crop research, e.g. photosynthesis, aerodynamic resistance and growth. An analysis of light transmission through a crop canopy based on a negative binomial probability model is presented to enable the calculation of both the crop area density vector and frequency vector of plant surface. Some barley crop measurements are presented and these are compared with auxiliary scalar measurement of crop area density from a destructive sample. IS - 4 JF - Agricultural and Forest Meteorology EP - 284 TI - A laser scanning instrument for measuring crop geometry VL - 46 SP - 275 KW - 3d KW - digitized KW - geometry KW - laser KW - plant KW - reconstruction AU - Walklate, PJ PY - 1989/06// UR - http://dx.doi.org/10.1016/0168-1923(89)90031-2 ER -