倾斜摄影建筑物模型自动纹理重建  

Automated texture mapping of reality CSG building model with oblique aerial imagery

作　　者：程昫 葛亮[2] 张帆[1] 黄先锋[1] CHENG Xu;GE Liang;ZHANG Fan;HUANG Xianfeng(State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China;Tianjin Institute of Surveying and Mapping Company Limited,Tianjin 300381,China)

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [2]天津市测绘院有限公司,天津300381

出　　处：《测绘学报》2023年第9期1528-1537,共10页Acta Geodaetica et Cartographica Sinica

基　　金：国家重点研发计划(2020YFC1523003);湖北省重点研发计划(2020BAB125);深圳市空间信息智能感知与服务重点实验室开放基金(SZU51029202009)。

摘　　要：构建高精度、高真实感的建筑物模型依赖精确的几何边界与清晰的纹理贴图。在建筑物单体化建模过程中,窗户、弧形阳台等附属部件的简化或省略破坏了原本的几何结构,导致纹理映射时模型表面存在纹理偏移、错位的现象。针对上述问题,本文提出了一种针对建筑物单体化模型的自动纹理重建方法:首先引入单体化模型的几何误差,对纹理接缝产生的位置进行约束,减轻接缝两侧的错位;然后利用跨接缝的直线结构进行配准,对齐接缝处的错位;最后进行色彩一致性调整。试验结果表明,本文方法能为多种不同复杂程度的建筑物单体化模型生成几何轮廓连续、颜色过渡自然的纹理结果,有效提高了建筑物单体化建模过程中纹理处理的效率。Accurate geometric and texture information is required to build highly realistic building models.In building three-dimensional modeling,some appurtenances like window sills and curved balcony are simplified or neglected,which brings errors to the original geometric structure and results in large deviations and obvious misalignment in texture mapping.We propose an automated texture mapping method using oblique imagery to solve this problem.Firstly,introducing the model geometric error to constrain the texture seam lines position,which avoids passing the area with significant deviations;Next,using line structure of the building fa ade to construct the registration model,which directly deals with the misalignment;Then,the color adjustment is carried out.Experiments using reality CSG(constructive solid geometry)building models of various complexity were conducted to verify the effectiveness of the proposed method,which obtains textures with continuous geometric contour and consistent color.

关 键 词：建筑物单体化模型 纹理映射 纹理融合 倾斜摄影 

分 类 号：P231[天文地球—摄影测量与遥感]