Virtual Building Model Construction from Real Images

These techniques consist basically in the reconstruction of virtual 3D models based on real data acquisition from buildings (i.e. photographs, range images and video). Afterwards, the sensor input is processed by using a reconstruction algorithm that estimates depths of the elements in the scenes and incorporates techniques such as epipolar geometry [1], triangulation [11], structure from motion [2], etc. Once the model is obtained a rendering step creates a virtual 3D representation of the environment including both geometry and texture of the objects. Refer to Figure 1 for an example of the process pipeline.