Title	Image Retrieval Based on P2-Invariant
Author	Ruihang Wu Author, Shaozi Lir Author, Fengmei Zou Author
Citation	Vol. 6  No. 8  pp. 79-84
Keywords	P2-invariant, cross ratio, feature correspondence, projective geometry.

Title	Vertex Guards in a Subclass of Orthogonal Polygons
Author	Ana Mafalda Martins, Ant?nio Leslie Bajuelos
Citation	Vol. 6  No. 9  pp. 102-108
Keywords	Computational Geometry, Art Gallery Problem and Theorem, Orthogonal polygons, Spiral polygons

Title	Introduction to Geometric Intronization as a Security Technique
Author	Qinghai Gao, Xiaowen Zhang, Michael Anshel
Citation	Vol. 8  No. 12  pp. 19-25
Keywords	Geometry, Biometrics, Intronization, Exon, Security, MER

Title	Face recognition system using fringe projection and moir?: characterization with fractal parameters
Author	Diana Calva M?ndez, Sergio Calva M?ndez, Alejandro Landa Quezada, Heiko Rudolph, Mario Lehman
Citation	Vol. 9  No. 7  pp. 78-84
Keywords	Face recognition, moire structure, fractal geometry, complexity, hybrid system