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首页> 外文会议>International conference on mechanization of field experiments >Detection of LAI for fruiter based on hemispherical photography
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Detection of LAI for fruiter based on hemispherical photography

机译：基于半球摄影的水果赖检测

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To solve the error from data acquisition to data processing in the traditional method and improve the standards in the method of operation,a hemisphere photography detecting system for shooting single fruiters from different positions by using fisheye lens was designed.The images were processed to obtain the LAI measuring value which would be validated with the true value,in order to study the influencing factors of the measurement of LAI.The results showed that fisheye lens shooting in different directions,offsets,and heights and using different software processing methods influenced the measurement of LAI.The optimal parameters were as follows:filming direction from the fruit tree of the east,distance between the fisheye lens and the citrus tree tnmk of 25 cm,height from the ground of 89 em.LAI4R was used,the Zenith Angle was 60,the areas irrelevant to the canopy was covered by using software mask function.With the above conditions,the coefficient of determination R2 of the linear regression model was 0.8268.The average absolute error and the average relative error between the measured value and the true value was 0.31％ and 14.19％,respectively.This study provides a reference for the detection of the LAI of single fruiters.
机译：为了解决从数据采集到数据在传统的方法处理该误差，提高标准操作方法，半球摄影用于通过使用鱼眼镜头拍摄从不同位置单一fruiters检测系统designed.The图像进行处理以获得这将与真值进行验证，以研究LAI.The的测量的影响因素LAI测量值结果表明，在不同的方向，偏移和高度和使用不同的软件处理方法鱼眼镜头拍摄的影响的测量LAI.The最佳参数如下：从东的果树拍摄方向，使用鱼眼镜头和25厘米，从89 em.LAI4R的接地高度的柑桔树tnmk之间的距离，天顶角为60 ，无关的遮篷的区域覆盖，通过使用软件掩模function.With上述条件下，所述线性再判定R2的系数gression模型是0.8268.The平均绝对误差和测量值和真值之间的平均相对误差为0.31％和14.19％，respectively.This研究提供了一种用于检测单fruiters的LAI的基准。

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