农村不动产测绘三维激光扫描图像轮廓提取  

3D laser scanning image contour extraction for rural real estate surveying and mapping

作　　者：周志林 ZHOU Zhilin(Ningbo Zhenhai Planning,Survey,Design and Research Institute,Ningbo,Zhejiang 315202,China)

机构地区：[1]宁波市镇海规划勘测设计研究院,浙江宁波315202

出　　处：《北京测绘》2025年第2期177-182,共6页Beijing Surveying and Mapping

基　　金：浙江省资源厅2022科研项目(2022-57)。

摘　　要：为了准确提取农村不动产测绘图像的目标轮廓,研究农村不动产测绘三维激光扫描图像轮廓提取方法。应用三维激光扫描技术生成农村不动产测绘图像,采用改进的二维最大熵方法有效分割测绘图像,准确获取图像中农村不动产的目标前景。利用Gabor小波变换获取目标的多尺度特征,从而更全面地理解目标的形态与结构。同时,结合模糊数学理论,深入描述了图像的纹理特征,并通过相似度函数实现了目标轮廓的精确提取。若轮廓存在不连续位置,重新标记并使用模糊数学理论将标记进行连接,最终获得完整的农村不动产测绘图像目标轮廓。测试结果显示:所提方法平均吻合度高于93.4%,容差率低于2.5%,提取结果不仅连续性好,而且平滑度高,为农村不动产测绘提供了有力的技术支持。In order to accurately extract the target contour of rural real estate surveying and mapping images,a threedimensional(3D)laser scanning image contour extraction method for rural real estate surveying and mapping was studied.3D laser scanning technology was applied to generate rural real estate surveying and mapping images,and an improved twodimensional(2D)maximum entropy method was used to effectively segment the surveying and mapping images and accurately obtain the target foreground of rural real estate in the images.Gabor wavelet transform was employed to obtain multi-scale features of targets,so as to gain a more comprehensive understanding of their morphology and structure.At the same time,by combining fuzzy mathematics theory,the image texture features were described in depth,and the accurate extraction of target contours was achieved through similarity functions.If there are discontinuous positions in the contour,relabeling is implemented,and fuzzy mathematics theory is used to connect the labels,ultimately obtaining a complete target contour in rural real estate surveying and mapping images.The test results show that the proposed method has an average conformity of over 93.4% and a tolerance rate of less than 2.5%.The extraction results not only have good continuity but also high smoothness,providing strong technical support for rural real estate surveying and mapping.

关 键 词：Gabor小波分析 农村不动产 三维激光扫描 测绘图像 轮廓提取 位置编码 

分 类 号：P258[天文地球—测绘科学与技术]