基于OTSU算法的露天矿坑坡面顶底线自动提取方法  

Automatic extraction method of the top and bottom line of open pit slope based on OTSU algorithm

作　　者：甄莹 王夺 左春雷 ZHEN Ying;WANG Duo;ZUO Chunlei(Shen kan engineering and technology corporation,MCC,Shenyang,Liaoning 110000,China)

机构地区：[1]中冶沈勘工程技术有限公司,辽宁沈阳110000

出　　处：《测绘标准化》2023年第4期144-149,共6页Standardization of Surveying and Mapping

摘　　要：目前,矿山治理和数字矿山建设中,露天矿坑坡面顶底线提取方法的运算量较大,且需要通过计算标准差人为设定阈值,然后进行梯度运算提取边缘像素,最后得到坡面顶底线。针对此,本文提出一种基于OTSU算法阈值自适应的矿坑坡面顶底线提取方法。通过对矿区数字高程模型(DEM)图像进行灰度转化,使像素的灰度值与高程对应,并进行滤波、去噪等预处理,从而对矿区DEM灰度图像进行坡面顶底线的提取。用两组矿区数据对该方法进行验证,实践证明,该方法高效、可靠、稳定,后续可为矿山开采治理、数字矿山建设提供支持。At present,the extraction method of slope top and bottom line of open pit used in mine management and digital mine construction requires a large amount of computation,and the threshold value needs to be artificially set by calculating standard deviation,and then the gradient operation is carried out to extract edge pixels,and finally the slope top and bottom line is obtained.In this paper,a threshold adaptive extraction method of mine slope top and bottom line based on OTSU algorithm is proposed.By transforming the DEM image of mining area into gray level,the gray value of pixels corresponds to the elevation,and the pretreatment such as filtering and denoising is carried out,so as to extract the top and bottom line of the slope of the DEM image of mining area.The method is verified by two sets of mining data,and the practice proves that the method is efficient,reliable and stable,and can provide support for mining management and digital mine construction.

关 键 词：数字高程模型 三维模型 坡面线提取 数字矿山 

分 类 号：P237[天文地球—摄影测量与遥感]