基于多视角图像的植物叶片建模与曲面面积测量  

Plant Leaf Modeling and Surface Area Measuring Based on Multi-view Images

作　　者：张卫正[1] 徐武峰 裘正军[1] 吴翔[1] 吴武豪[1] 何勇[1] 

机构地区：[1]浙江大学生物系统工程与食品科学学院,杭州310058 [2]许继集团许继电源有限公司,许昌461000

出　　处：《农业机械学报》2013年第7期229-234,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA101903);国家自然科学基金资助项目(30600371);教育部重点资助项目(109090)

摘　　要：针对现有测量植物叶片面积方法会对叶片造成一定程度的损伤,提出一种直接对自然生长状态下的叶片进行测量的方法。首先,对数码相机进行校正获取相机参数,从多角度拍摄自然生长状态下的叶片;然后,利用PhotoModeler软件对图像进行处理,获得叶片三维点云模型;再利用Matlab编程实现叶片的三维曲面建模并计算曲面面积。将该测量结果与采用扫描仪结合Photoshop测量结果进行了对比,实验结果表明,提出的方法对自然状态下的叶片测量效果良好,精度达99%。The existing methods of leaf area measuring would cause certain damage to the leaf, so a measurement method of the leaf area in natural growing state was put forward. The digital camera was calibrated to get camera parameters; then leaf images at various angles in natural growing state were shot and processed by PhotoModeler software. The 3-D point cloud model of leaf was built up. The 3-D surface modeling and surface area calculating of leaf were achieved by using Matlab software. The measuring results and the calculating results with combination method of scanner and Photoshop software were compared. It showed that the accuracy of calculating results reached to 99%.

关 键 词：植物叶片 面积测量 图像处理 相机校正 曲面建模 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] S126[自动化与计算机技术—计算机科学与技术]