基于激光测距仪和Matlab的水田平整度检测方法

Field surface smoothness measurement using laser scanner

水田的平整度要求很高,田面平整度的有效检测与评价,对于水田精细平整效果以及精准农业的发展具有重要意义。基于激光测距仪和Matlab软件,探讨了一种可用于水田田面平整度测量与评价的方法。该方法实现了对田面数据的快速采集、处理和三维重构,并通过计算重构田面的高程差和标准差,结合正态分布3σ法则,对水田平整度作出评价。试验结果表明对实验田平整度的评价与实际情况相符,该检测方法可行高效,可为自动化、智能化获取与处理数据的相关研究提供参考。

Efficient field flatness detecting and assessing is very important to the work of paddy land leveler and the development of precision agriculture. This paper designed a method which could measure field flatness based on laser scanner and Matlab, mainly including field flatness detecting and level assessing. This method managed to achieve field, point data by laser scanner, and to deal with the ranging data to realize three-dimensional reconstruction of the surface field, and to assesse the leveling accuracy and effect of the land leveler with fitting plane, elevation deviation and elevation standard deviation of the reconstructed land. Experiments were taken in experimental paddy fields, in which reconstructed land could well reflect the paddy field conditions, and elevation deviation fit normal distribution well achieved the elevation deviation within 3 cm. Therefore, the paddy field leveling assessing method designed by this paper was workable and effective. This method could provide reference to related research for automatic data acquisition and processing.