基于Android系统手机的叶面积测量方法  

Leaf Area Measurement Using Android OS Mobile Phone

作　　者：龚爱平[1] 吴武豪[1] 裘正军[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

出　　处：《农业机械学报》2013年第9期203-208,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：为了快速无损测量植物叶片的面积,利用Java编写的软件,以Android智能手机为工作平台,使用图像处理技术对植物叶片面积进行测量。测量步骤分为:图像获取、图像分割、图像二值化、滤波去噪、叶片面积计算。采用该方法分别对面积为100 mm2的三角形、100 mm2的正方形、314.15 mm2的圆、112.26 mm2的正五角星在150 mm和200-800 mm之间间隔为100 mm的8个距离段进行了面积测量,结果显示其测量误差范围在-0.62%-0.79%之间。应用该方法测量了代表不同植物叶片形状的番茄、茄子和枫叶叶片,当手机和叶片的距离在300-600 mm时,测量结果与LI-3100型叶面仪测得的结果偏差在±1%以内,其他距离段偏差均大于1%。本研究设置图像为2 560像素×1 920像素,测量精度能达到0.001 cm2,证明该方法具备精确测量叶片面积的能力。The goal of this study was to develop a method based on Android OS mobile phone by using image processing to rapidly and non-destructively determine leaf area（LA）.Software using Java language was used to estimate LA.The steps for processing each image were as follows： image collection,image segmentation,image binarazition,filtering and LA calculation.The proposed method was carried out on triangle of 100 mm2,square of 100 mm2,circle of 314.15 mm2and five-pointed star of 112.26 mm2in eight distance ranges by AutoCAD precision drawings.The test result showed that the measured error was in the range of-0.62% to 0.79%.The proposed method was applied to measure different leaves representing varied shapes and sizes,such as tomato,eggplant and maple representing.The measured error was within ± 1% compared with type LI-3100 leaf measuring device when the distance between mobile and leaf was 300 - 600 mm.The picture sizes were 2 560 pixels × 1 920 pixels and the measuring accuracy was 0.001 cm2in this work,which showed the proposed method could measure leaf areas accurately.

关 键 词：叶面积 智能手机 图像处理 ANDROID系统 

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]