中国农业大学学报2017，Vol.22Issue(12)：156-162,7.DOI:10.11841/j.issn.1007-4333.2017.12.19
基于三维点云的苹果树冠层光照分布模型研究
Canopy light distribution modeling for apple trees based on the 3D point cloud
摘要
Abstract
In order to provide theoretical foundation and technical guidance for pruning,fruit quality evaluating and fruit production predicting,the open center shaped apple tree was taken as research object,and its canopy light distribution model was explored based on apple tree's 3D point cloud structure.3D point clouds reconstruction and the point cloud segmentation technology were used to get apple tree's point cloud at different altitude layers,and the Pixel proportion and Graham scanning algorithms were used to calculate effective projection area of each layer and its covering area and the effective leaf area index of each layer.The apple tree canopy light distribution model was investigated between the actual illumination of each layer and its effective leaf area index.The model calibration and validation results showed that its calibration reached 0.924,and its root mean square error correction (RMSEC) was 0.05;its validation reached to 0.955,its root mean square error of prediction (RMSEP) was 0.04,and its relative percent deviation (RPD) was 4.91 indicating this model had high prediction precision and strong ability of prediction.关键词
苹果树/三维点云/相对光照强度/层有效叶面积指数/冠层光照分布模型Key words
apple tree/3D point cloud/relative light intensity/layer effective leaf area index/canopy light distribution model分类
信息技术与安全科学引用本文复制引用
廖崴,郑立华,李民赞,孙红,杨玮..基于三维点云的苹果树冠层光照分布模型研究[J].中国农业大学学报,2017,22(12):156-162,7.基金项目
国家自然科学基金项目(31371532) （31371532）
