\begin{thebibliography}{10}

\bibitem{Fox99montecarlo}
D.~Fox, W.~Burgard, F.~Dellaert, and S.~Thrun, ``Monte carlo localization:
  Efficient position estimation for mobile robots,'' in {\em In Proc. of the
  National Conference on Artificial Intelligence (AAAI}, pp.~343--349, 1999.

\bibitem{urbnavCipolla}
D.~Robertsone and R.~Cipolla, ``An image-based system for urban navigation,''
  in {\em British Machine Vision Conference}, 2004.

\bibitem{Royer04}
E.~Royer, M.~Lhuillier, M.~Dhome, and T.~Chateau, ``Towards an alternative gps
  sensor in dense urban environment from visual memory,'' in {\em British
  Machine Vision Conference}, 2004.

\bibitem{histolocal}
C.~Zhou, Y.~Wei, and T.~Tan, ``Mobile robot self-localization based on global
  visual appearance features,'' in {\em IEEE International Conference on
  Robotics and Automation}, 2003.

\bibitem{pcalocal}
T.~Hashem and Z.~Andreas, ``Global visual localization of mobile robots using
  kernel principal component analysis,'' in {\em IEEE/RSJ Intl. Conf. on
  Intelligent Robots and Systems}, 2003.

\bibitem{fourierlocal}
E.~M.~T. Maedab and H.~Ishiguro, ``Image-based memory for robot navigation
  using properties of omnidirectional images,'' {\em Robotics and Autonomous
  Systems}, vol.~47, no.~4, pp.~251--267, 2004.

\bibitem{ZhangKosecka06}
W.~Zhang and J.~Kosecka, ``Image based localization in urban environments,'' in
  {\em International Symposium on 3D Data Processing, Visualization and
  Transmission, 3DPVT}, 2006.

\bibitem{vgoogle}
J.~Sivic and A.~Zisserman, ``Video google: A text retrieval approach to object
  matching in videos,'' in {\em International Conference on Computer Vision},
  2003.
\bibitem{vocabTree}
D.~Nist\'er and H.~Stew\'enius, ``Scalable recognition with a vocabulary
  tree,'' in {\em IEEE Conf. on Computer Vision and Pattern Recognition},
  vol.~2, pp.~2161--2168, June 2006.

\bibitem{Lowe04}
D.~G. Lowe, ``Distinctive image features from scale-invariant keypoints,'' {\em
  International Journal of Computer Vision}, vol.~60, pp.~91--110, November
  2004.
\bibitem{topo07}
F.~Fraundorfer, C.~Engels, and D.~Nister, ``Topological mapping, localization
  and navigation using image collections,'' in {\em IEEE/RSJ Intl. Conf. on
  Intelligent Robots and Systems}, pp.~3872--3877, 2007.

\bibitem{Brown07City}
G.~Schindler, M.~Brown, and R.~Szeliski, ``City-scale location recognition,''
  in {\em Computer Vision and Pattern Recognition, 2007. CVPR '07. IEEE
  Conference on}, 2007.

\bibitem{fabmap}
M.~Cummins and P.~Newman, ``{FAB-MAP:} probabilistic localization and mapping
  in the space of appearance,'' {\em The International Journal of Robotics
  Research}, vol.~27, no.~6, pp.~647--665, 2008.

\bibitem{SantoshICRA}
D.~Santosh, S.~Achar, and C.~V. Jawahar, ``Autonomous image-based exploration
  for mobile robot navigation,'' in {\em IEEE International conference on
  Robotics and Automation}, 2008.

\bibitem{mser}
J.~Matas, O.~Chum, M.~Urban, and T.~Pajdla, ``Robust wide baseline stereo from
  maximally stable extremal regions,'' in {\em In British Machine Vision
  Conference}, vol.~1, pp.~384--393, 2002.

\bibitem{surf06}
H.~Bay, T.~Tuytelaars, and L.~Van~Gool, ``Surf: Speeded up robust features,''
  in {\em 9th European Conference on Computer Vision}, May 2006.

\end{thebibliography}
