Efficient Structure from Motion using Reduced Feature Set

With the advent of photo sharing sites like Flickr and Picasa, there has been a growing interest in crowd-sourced modeling and large scale reconstruction using the rich source of Internet imagery. Feature correspondence estimation across multiple images and the global optimization of 3D structure and camera parameters (bundle adjustment) are the primary computational bottlenecks in large scale reconstruction process. Feature interest points play an important role in all aspects of this process.