老旧单体景观建筑裂缝复杂纹理特征提取仿真  

Simulation of Extracting Complex Texture Features of Cracks in Old Single Landscape Buildings

作　　者：晏辞 汪浩文[2] YAN Ci;WANG Hao-wen(Jincheng College,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 211156,China;Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 211106,China)

机构地区：[1]南京航空航天大学金城学院,江苏南京211156 [2]南京航空航天大学,江苏南京211106

出　　处：《计算机仿真》2024年第11期291-295,共5页Computer Simulation

基　　金：江苏省教育厅江苏省社科应用研究精品工程课题(22SYC-242);南京航空航天大学金城学院校级科研基金项目(XJ202217)。

摘　　要：老旧单体景观建筑通常具有复杂纹理,受光照条件的变化以及建筑物本身阴影的影响,导致建筑表面裂缝的复杂纹理特征提取难度增大,提取准确度较低。为此,提出了老旧单体景观建筑裂缝复杂纹理特征提取仿真。构建掩膜,利用快速傅里叶变换算法消除图像噪声,统计老旧单体景观建筑图像的直方图,校正灰度,获取更清晰图像,剔除有梯度的伪裂缝,获得滤波处理后空域图像。根据边缘检测构造索贝尔算子(Sobel Operator,Sobel)模板,计算图像边缘检测的响应值。将全部像素点整合成一个特征集,算出全部裂缝目标信息损失,完成纹理裂缝最佳特征提取。实验证明,所提方法景观建筑复杂纹理裂缝图像预处理效果更好,提取特征准确率高,极小的裂缝部分都能够提取出来,有助于技术人员后续修复,确保建筑安全。Old single landscape buildings usually have complex textures,which are affected by changes in lighting conditions and the shadows of the building itself,resulting in increased difficulty and lower accuracy in extracting complex texture features of surface cracks.Therefore,a simulation was proposed to extract complex texture features of cracks in old single landscape buildings.Firstly,the mask was constructed.And then,noise was eliminated by fast Fourier transform algorithm.Secondly,histogram of old single landscape building images was counted,and the gray level was corrected to obtain clearer images.After the pseudo-cracks with gradient were eliminated,the filtered spatial image could be obtained.Moreover,a Sobel Operator(Sobel)template was constructed by the edge detection.Meanwhile,the response value of edge detection was calculated.Finally,all pixel points were integrated into a feature set for calculating the target information loss of all cracks.Thus,the best feature extraction for texture cracks was a-chieved.The experiment results show that the proposed method has better preprocessing effect on complex texture image,higher extraction accuracy,and can even extract the smallest cracks,which is helpful for technicians to repair and ensure building safety.

关 键 词：老旧单体景观建筑 建筑复杂纹理 裂缝特征提取 高斯滤波器 平滑降噪 

分 类 号：TU746[建筑科学—建筑技术科学]