ABSTRACT
This chapter discusses a new side-view Structure from Motion (SfM) topographic data. It explains reconstructing and registration processes of raw SfM data. The chapter provides extracting key urban features from side-view SfM data and discusses the issues concerning side-view SfM data. Nowadays, advances in photogrammetry and computer vision of SfM techniques can alternatively be used to provide such high-resolution and high-accuracy topographic data by using low-cost surveying equipment. When the selected photos have been converted and stored as a JPEG file format, the key aspect of the SfM technique can then be used to determine the matching 3D positions of features in the overlapping 2D photos. When side-view SfM topographic data are obtained, essential information can be extracted from the vertical urban features. A side-view SfM point cloud may contain many elevation points representing the different urban features.
