@article{ETD,
      recid = {7920},
      author = {Nanjappa, Pradeep},
      title = {Vision based bayesian state estimation of unmanned aerial  vehicles: a preliminary study},
      publisher = {Oregon Health and Science University},
      school = {M.S.},
      address = {2003-06-01},
      number = {ETD},
      abstract = {The goal of  this study was to  arrive at a method to   estimate the physical  state of  a scaled helicopter model   using images taken from a stationary camera on the ground.  The state would  consist of  the  [XYZ]  coordinates and   orientation of  the helicopter in  space. The end was   achieved by  using the Direct Linear Transform to calibrate  the given camera and obtain the transformation matrices and  camera calibration parameters},
      url = {http://digitalcollections.ohsu.edu/record/7920},
      doi = {https://doi.org/10.6083/M4MP51JS},
}