Abstract: 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 façade 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.

Key words: reality CSG building models, texture mapping, texture fusion, oblique imagery