update SOLVEPNP documentation

modules/calib3d/doc/calib3d.bib

+@article{lepetit2009epnp,
+  title={Epnp: An accurate o (n) solution to the pnp problem},
+  author={Lepetit, Vincent and Moreno-Noguer, Francesc and Fua, Pascal},
+  journal={International journal of computer vision},
+  volume={81},
+  number={2},
+  pages={155--166},
+  year={2009},
+  publisher={Springer}
+}
+
+@article{gao2003complete,
+  title={Complete solution classification for the perspective-three-point problem},
+  author={Gao, Xiao-Shan and Hou, Xiao-Rong and Tang, Jianliang and Cheng, Hang-Fei},
+  journal={Pattern Analysis and Machine Intelligence, IEEE Transactions on},
+  volume={25},
+  number={8},
+  pages={930--943},
+  year={2003},
+  publisher={IEEE}
+}
+
+@inproceedings{hesch2011direct,
+  title={A direct least-squares (DLS) method for PnP},
+  author={Hesch, Joel and Roumeliotis, Stergios and others},
+  booktitle={Computer Vision (ICCV), 2011 IEEE International Conference on},
+  pages={383--390},
+  year={2011},
+  organization={IEEE}
+}
+
+@article{penate2013exhaustive,
+  title={Exhaustive linearization for robust camera pose and focal length estimation},
+  author={Penate-Sanchez, Adrian and Andrade-Cetto, Juan and Moreno-Noguer, Francesc},
+  journal={Pattern Analysis and Machine Intelligence, IEEE Transactions on},
+  volume={35},
+  number={10},
+  pages={2387--2400},
+  year={2013},
+  publisher={IEEE}
+}

modules/calib3d/include/opencv2/calib3d.hpp

@@ -189,10 +189,10 @@ enum { LMEDS  = 4, //!< least-median algorithm
      };
 
 enum { SOLVEPNP_ITERATIVE = 0,
-       SOLVEPNP_EPNP      = 1, // F.Moreno-Noguer, V.Lepetit and P.Fua "EPnP: Efficient Perspective-n-Point Camera Pose Estimation"
-       SOLVEPNP_P3P       = 2, // X.S. Gao, X.-R. Hou, J. Tang, H.-F. Chang; "Complete Solution Classification for the Perspective-Three-Point Problem"
-       SOLVEPNP_DLS       = 3, // Joel A. Hesch and Stergios I. Roumeliotis. "A Direct Least-Squares (DLS) Method for PnP"
-       SOLVEPNP_UPNP      = 4  // A.Penate-Sanchez, J.Andrade-Cetto, F.Moreno-Noguer. "Exhaustive Linearization for Robust Camera Pose and Focal Length Estimation"
+       SOLVEPNP_EPNP      = 1, //!< EPnP: Efficient Perspective-n-Point Camera Pose Estimation @cite lepetit2009epnp
+       SOLVEPNP_P3P       = 2, //!< Complete Solution Classification for the Perspective-Three-Point Problem @cite gao2003complete
+       SOLVEPNP_DLS       = 3, //!< A Direct Least-Squares (DLS) Method for PnP  @cite hesch2011direct
+       SOLVEPNP_UPNP      = 4  //!< Exhaustive Linearization for Robust Camera Pose and Focal Length Estimation @cite penate2013exhaustive
 
 };