基于超声波传感技术的温室草莓冠层三维重构与测量

3-D Reconstruction and Measurement of Greenhouse Strawberry Canopy Based on Ultrasonic Sensors

提出了一种基于超声波传感技术的温室草莓冠层三维重构与测量方法,用Matlab软件的interp1()函数、quad函数、surf函数等进行温室草莓冠层曲线、曲面的拟合并完成面积、体积的计算。以6垄温室草莓冠层作为试验对象,采用该系统对其进行3次重复试验,与人工测量结果进行对比。分析结果表明,检测结果的可重复性较好(R2为0.927 5,RMSE为0.135 8 m3),与人工测量结果相一致(R2为0.941 1,RMSE为0.134 5 m3),该方法具有较高的稳定性及可行性。

A crop canopy 3-D reconstruction and volume measurement method that based on the ultrasonic sensing technology was proposed.The functions of interp1（）,quad and surf in Matlab were introduced for crop canopy description and the volume calculation.Indoor measurements were conducted on six ridges of greenhouse strawberry by 3 times repeats and the results were compared with manual measurement.The result showed the experiments presented good repeatability（R2was 0.927 5,RMSE was 0.135 8 m3）,which showed consistent with the manual measurement（R2is 0.941 1,RMSE was 0.134 5 m3）.Therefore,the proposed measuring system was stabilized and feasible.