基于MRF模型的高层建筑立面测绘影像重复纹理分割方法  

A repetitive texture segmentation method for facade surveying and mapping images of high-rise buildings based on MRF model

作　　者：王云富 WANG Yunfu(College of Architecture Engineering and Design,Jiuzhou Polytechnic,Xuzhou,Jiangsu 221116,China)

机构地区：[1]九州职业技术学院建筑工程与设计学院,江苏徐州221116

出　　处：《北京测绘》2025年第3期370-375,共6页Beijing Surveying and Mapping

基　　金：江苏省高等教育教改立项研究课题(2017JSJG485)。

摘　　要：为了提升高层建筑立面测绘影像重复纹理分割精度,提升图像质量,本研究基于马尔可夫随机场(MRF)模型的高层建筑立面测绘影像重复纹理分割方法,利用傅里叶变换进行高层建筑物立面测绘影像的相关相位匹配。在频率域中变换处理重复纹理,计算影像之间的平移差值。依据傅里叶变换以及影像灰度相关系数,检测高层建筑影像水平与垂直方向重复纹理,得到影像重复纹理的区域信息和细节信息。构建高阶MRF模型,融合影像重复纹理的区域信息、细节信息、先验能量,得出影像重复纹理最佳标记场,完成高层建筑立面测绘影像重复纹理分割。实验结果表明:该方法的高层建筑立面测绘影像重复纹理检测抗干扰性能较强,影像重复纹理分割精度高,可保留分割影像的细节信息,提升图像质量。In order to improve the accuracy of repetitive texture segmentation in facade surveying and mapping images of high-rise buildings and enhance image quality,a repetitive texture segmentation method for facade surveying and mapping images of high-rise buildings based on the Markov random field(MRF)model was studied.Fourier transform was used for phase matching of facade surveying and mapping images of high-rise buildings.The repetitive texture was transformed and processed in the frequency domain,and the translation difference between images was calculated.Based on the Fourier transform and image grayscale correlation coefficient,repetitive textures in the horizontal and vertical directions of high-rise building images were detected,and regional and detailed information of repetitive textures in the images was obtained.A high-order MRF model was developed,and the region information,detail information,and prior energy of repetitive textures in the images were integrated.The optimal marking field for repetitive textures in the images was derived to complete the repetitive texture segmentation in facade surveying and mapping images of high-rise buildings.The experimental results show that the method has strong anti-interference performance in detecting repetitive textures in facade surveying and mapping images of high-rise buildings and high segmentation accuracy in repetitive textures in the images,and it can retain the detailed information of segmented images,improving image quality.

关 键 词：马尔可夫随机场(MRF)模型 高层建筑 立面测绘影像 重复纹理 分割方法 

分 类 号：P232[天文地球—摄影测量与遥感]