| 基于倾斜摄影测量技术三维纹理遮挡处理 |
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| 引用本文： | 王崇倡,张秀岩,纪亮.基于倾斜摄影测量技术三维纹理遮挡处理[J].测绘与空间地理信息,2018(3):61-64. |
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| 作者姓名： | 王崇倡 张秀岩 纪亮 |
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| 作者单位： | 辽宁工程技术大学 测绘与地理科学学院,辽宁 阜新,123000 |
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| 摘 要： | 在三维模型重建中,难以避免地产生密集建筑物纹理相互有遮挡的问题,普通的处理方法有时不能很好地解决。本文基于当前先进的倾斜摄影测量技术,分析三维模型纹理自动映射中存在的问题,对密集建筑物纹理存在的遮挡情况进行重点研究。经研究提出了一种利用投影矩阵将三维模型纹理面映射到所要贴合的纹理影像中的方法,再将三维TIN网进行二维处理,使模型的复杂性降低,稀疏三维模型的网格,对密集建筑物的遮挡进行有效的处理。
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| 关 键 词： | 倾斜摄影 纹理映射 纹理遮挡 投影矩阵 oblique photography texture mapping texture occlusion projection matrix |
3D Texture Occlusion Processing Based on Oblique Photogrammetry |
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| WANG Chongchang,ZHANG Xiuyan,JI Liang.3D Texture Occlusion Processing Based on Oblique Photogrammetry[J].Geomatics & Spatial Information Technology,2018(3):61-64. |
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| Authors: | WANG Chongchang ZHANG Xiuyan JI Liang |
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| Abstract: | In view of the 3D model reconstruction, the existence of dense texture mutual occlusion problems is hard to avoid on side of the building, ordinary processing methods sometimes haven' t good solution to this problem. This paper based on the current advanced oblique photogrammetry technology, analyses problems that existing in the 3D model texture mapping automatically, and for dense buildings existing condition of texture in key research. Through study and put forward a kind of projection matrix is used to change the 3D model surface texture mapped to have to fit the texture image, then convert the three-dimensional TIN to two-dimensional process-ing method, and the use of the method for test. Results show that the method can effective processing problem of dense shade of the building, reduce the complexity of the model, the sparse grid of the 3D model. |
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