From Image to 3D Model

By using photogrammetry collinearity equation, a group of correlated points in at least two oriented images can be reconstructed into the 3D coordinate system.After calculating the sparse point cloud, the points can be densified by the multi-view stereo method such as PMVS and SGM. At lats, for WEB presentation, the dense point data has to be subsampled. The following figure shows the basic four steps to generate 3D street view models from overlapping images.

 

4 step to 3D