4Miller R, Constine J. Apple acquires augmented reality company metaio [EB/OL]. (2015-05-28)[2015-07-26]. http://techcrunch.com/2015/05/28/apple-metaio/.
5Farooqui A. Smartglasses patented by Samsung could give Google Glass a run for its money [EB/OL]. (2015-05-17)[2015-07-26]. http://www.sammobile.com/2015/05/17/smartglasses-patented-by-samsung-could-give-google-glass-a-run-for-its-money/.
6Wagner D, Reitmayr G, Mulloni A, et al. Pose tracking from natural features on mobile phones [C]/The 7th IEEE/ACM International Symposium on Mixed and Augmented Reality. Cambridge: IEEE Computer Society, 2008: 125-134. [DOI: 10.1109/ISMAR.2008.4637338].
7Klein G, Murray D. Parallel tracking and mapping on a camera phone [C]//The 8th IEEE International Symposium on Mixed and Augmented Reality. Orlando, FL: IEEE, 2009: 83-86. [DOI: 10.1109/ISMAR.2009.5336495].
8Bay H, Ess A, Tuytelaars T, et al. Speeded-up robust features[J]. Computer Vision and Image Understanding, 2008, 110(3): 346-359. [DOI: 10.1016/j.cviu.2007.09.014].
9Pirchheim C, Schmalstieg D, Reitmayr G. Handling pure camera rotation in keyframe-based slam [C]//2013 IEEE International Symposium on Mixed and Augmented Reality. Adelaide, SA: IEEE, 2013: 229-238. [DOI: 10.1109/ISMAR.2013.6671783].
10Leutenegger S, Chli M, Siegwart R Y. BRISK: binary robust invariant scalable keypoints [C]//Proceedings IEEE International Conference on Computer Vision. Barcelona: IEEE, 2011: 2548-2555. [DOI: 10.1109/ICCV.2011.6126542].