基于图像视觉的水稻茎叶夹角测量研究

Study on the Angle Between Rice Stem and Leaf Measuring Method Using Image Vision Technology

提出了一种基于图像视觉原理的水稻茎叶夹角测量计算方法,利用基于四个方向模板运算的距离变换算法对预处理后的茎叶夹角图像进行骨架信息提取,利用Hough变换对提取的骨架信息进行直线检测,通过检测到的直线间的夹角进行茎叶夹角计算。实验结果表明,该方法能够精确、快捷的对水稻茎叶夹角进行测量计算,误差仅为2.0%,能满足农学研究的要求。

A measurement methods for the angle between rice stem and leaf based on image vision was presented. after preprocessing, extracts the skeleton from a image of the angle between rice stem and leaf by the distance transform algorithm based on the four directions template operations, detects the straight lines from the skeleton information by the Hough transform, and calculates the angle between rice stem and leaf by calculating the angle between the straight lines. Experimental results showed that： the method can accurately and fast measurements of the angle between rice stem and leaf, error is only 2.0%, able to meet the requirements of agricultural research.