author = "Leotta, Matthew J. and Vandergon, Austin and Taubin, Gabriel",
          affiliation = "{Brown University} and {Brown University} and {Brown University}",
                title = "Interactive 3D Scanning Without Tracking",
            booktitle = "Proceedings...",
                 year = "2007",
               editor = "Falc{\~a}o, Alexandre Xavier and Lopes, H{\'e}lio C{\^o}rtes 
         organization = "Brazilian Symposium on Computer Graphics and Image Processing, 20. 
            publisher = "IEEE Computer Society",
              address = "Los Alamitos",
             keywords = "Stereo vision, Laser measurements, Image shape analysis, Machine 
             abstract = "Using inexpensive and readily available materials -- a calibrated 
                         pair of cameras and a laser line projector -- a 3D laser range 
                         scanner which requires no tracking is implemented in this paper. 
                         We introduce a planarity constraint for reconstruction, based on 
                         the fact that all points observed on a laser line in an image are 
                         on the same plane of laser light in 3D. This plane of laser light 
                         linearly parametrizes the homography between a pair of images of 
                         the same laser line, and this homography can be recovered from 
                         point correspondences derived from epipolar geometry. Points 
                         visible from multiple views can be reconstructed via triangulation 
                         and projected onto this plane, while points visible in only one 
                         view can be recovered via ray-plane intersection. The use of the 
                         planarity constraint during reconstruction increases the system's 
                         accuracy, and using the planes for reconstruction increases the 
                         number of points recovered. Additionally, an interactive scanning 
                         environment is constructed, where incremental reconstruction is 
                         used to provide continuous visual feedback. Reconstructions with 
                         this method are shown to have higher accuracy than standard 
  conference-location = "Belo Horizonte",
      conference-year = "Oct. 7-10, 2007",
             language = "en",
           targetfile = "leotta-3dScanNoTrack.pdf",
        urlaccessdate = "2021, Jan. 16"