Abstract: The invention concerns a three-dimensional graphical authentication method for verifying the identity of a user through an electronic device having a graphical display, comprising the steps of: —receiving an authentication request, —displaying a three-dimensional virtual world containing a plurality of virtual objects by using scene graph with geometry instancing and low poly graphics, —navigating in the three-dimensional virtual world by using a rotatable and scalable scene view, —selecting one or plural virtual object(s) and/or performing one or plural pre-defined virtual object action(s)s to form a 3D password made of unique identifiers that correspond to the pre-defined virtual objects and/or actions in the scene graph, —determining if the formed 3D password matches a 3D password defined at a previous enrolment phase; and—granting the resource access to the user in case of 3D password matching or rejecting the resource access to the user in case of matching failure.

Abstract: A system and method is provided for accurately reconstructing a three-dimensional object using depth maps. An exemplary method includes detecting different positions of an object in a multiple image frames and generating depth maps for the object from the images frames based on the detected different positions of the object. Moreover, the method includes fusing the generated depth maps to generate a three-dimensional model of the object, calculating a variance of points of the fused depth maps for the object, and obtaining respective variances of points of a statistical value prior that correspond to the points of the fused depth maps. Finally, the method calculates a quality fitting result of the generated three-dimensional model of the object based on the calculated variance of the points of the fused depth maps and the respective variances of the corresponding points of the statistical value prior.

Abstract: The invention concerns a three-dimensional graphical authentication method for verifying the identity of a user through an electronic device having a graphical display, comprising the steps of: receiving an authentication request, displaying a three-dimensional virtual world containing a plurality of virtual objects by using scene graph with geometry instancing and low poly graphics, navigating in the three-dimensional virtual world by using a rotatable and scalable scene view, selecting one or plural virtual objects and/or performing pre-defined virtual object actions to form a 3D password made of unique identifiers that correspond to the pre-defined virtual objects and/or actions in the scene graph, determining if the formed 3D password matches a 3D password defined at a previous enrollment phase; and granting the resource access to the user in case of 3D password matching or rejecting the resource access to the user in case of matching failure.

Abstract: A system and method is provided for accurately reconstructing a three-dimensional object using depth maps. An exemplary method includes detecting different positions of an object in a multiple image frames and generating depth maps for the object from the images frames based on the detected different positions of the object. Moreover, the method includes fusing the generated depth maps to generate a three-dimensional model of the object, calculating a variance of points of the fused depth maps for the object, and obtaining respective variances of points of a statistical value prior that correspond to the points of the fused depth maps. Finally, the method calculates a quality fitting result of the generated three-dimensional model of the object based on the calculated variance of the points of the fused depth maps and the respective variances of the corresponding points of the statistical value prior.