THERMAL TEXTURE SELECTION AND CORRECTION FOR BUILDING FACADE INSPECTION BASED ON THERMAL RADIANT CHARACTERISTICS

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Jarzabek-Rychard, M.^2¹  Lin, D.^1² 

[1] Technische Universität Berlin, Institute of Geodesy and Geoinformation, Berlin, Germany^2;Technische Universität Dresden, Institute of Photogrammetry and Remote Sensing, Dresden, Germany^1

关键词: building facade;    thermal image;    calibration;    texture mapping;    terrestrial;    3D model;   

DOI  :  10.5194/isprs-archives-XLII-2-585-2018

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

An automatic building façade thermal texture mapping approach, using uncooled thermal camera data, is proposed in this paper. First, a shutter-less radiometric thermal camera calibration method is implemented to remove the large offset deviations caused by changing ambient environment. Then, a 3D façade model is generated from a RGB image sequence using structure-from-motion (SfM) techniques. Subsequently, for each triangle in the 3D model, the optimal texture is selected by taking into consideration local image scale, object incident angle, image viewing angle as well as occlusions. Afterwards, the selected textures can be further corrected using thermal radiant characteristics. Finally, the Gauss filter outperforms the voted texture strategy at the seams smoothing and thus for instance helping to reduce the false alarm rate in façade thermal leakages detection. Our approach is evaluated on a building row façade located at Dresden, Germany.

【 授权许可】

CC BY