Privacy Preserving Computational Geometry (PPCG) is a new study field of Secure Multi-party Computation(SMC), its main contents include: Point Inclusion problem, Polygon Intersection problem, Closest Pair problem, Convex Hulls problem and so on. In this paper, we focus on the point inclusion problem. This problem is defined in two parties setting, while Alice has a secret point z, and Bob has a secret domain P. Both of them want to know whether the point is included in the domain. Researchers have proposed many protocols to deal with point inclusion problems, however most of them mainly solved the problem of the relation between point and the regular graphics, like circle, ellipse, convex polygon etc. In this paper, we propose a two-party protocol for point-arbitrary polygons inclusion problem based on the anglerotation method, without revealing any private information, and then we give the correctness and security analysis.
Abstract. The arising technology eye tracking has been blooming not only in the medical field but also in the field of computer science. There are various usages of eye tracking that range from human study, over usability of design, up to controller input of computer interfaces to information security. In this paper, the application of the real-time gaze-base technique eye tracking is introduced with the presented usages. A comprehensive summary shows the progress of this innovative technology. Finally, the challenges and potential directions of this uprising tool are being discussed.
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