Abstract: As the data base in the construction of 3D real scene in China, 3D real scene model plays an extremely important role. Mesh model of building is an important data in the real 3D model, and its quality directly affects the use effect of the real 3D model. Based on practical engineering experience, a mass mesh model facade dressing method is proposed. Firstly, vector contours of the building are collected based on ContextCapture 3D model. Secondly, the parametric modeling software is used to generate the flat three-dimensional vector plane of the building in batches, and the adsorption of the building facade to the three-dimensional vector plane is automatically completed to make the building facade structure flat. Finally, taking the restored building mesh model as reference, the texture mapping of the building mesh model is carried out in ContextCapture software, and the batch update of the building mesh model is completed. The effectiveness and efficiency of the proposed method are verified by several test scenarios.

Key words: real 3D, building mesh model, facade trimming, levelling, batch