Abstract: The present invention provides a method and system for generation of 3-D content from 2-D sources. In particular, the present invention provides a method for determining a point cloud from one or more 2-D sources. The method of the present utilizes a search process for locating a point of maximal crossing of line segments, wherein each line segment line is generated for each possible point match between an image point in a first 2-D scene data source and an image point in a second 2-D scene data source. The search is performed over all possible camera rotation angles. The point cloud solution generated by the methods of the present invention may then be utilized as input to perform texture mapping or further 3-D processing.

Abstract: The present invention provides a method and system for generation of 3-D content from 2-D sources. In particular, the present invention provides a method for determining a point cloud from one or more 2-D sources. The method of the present utilizes a search process for locating a point of maximal crossing of line segments, wherein each line segment line is generated for each possible point match between an image point in a first 2-D scene data source and an image point in a second 2-D scene data source. The search is performed over all possible camera rotation angles. The point cloud solution generated by the methods of the present invention may then be utilized as input to perform texture mapping or further 3-D processing.

Abstract: Method and system for providing 3-D services and 3-D visual directories in a photorealistic, 3-D virtual environment depicting a real-life entity. The real-life entity depicted in the 3-D virtual environment may be an actual place and/or actual entity that is not limited to a geographic location but may include other environments such as, for example, a subway system, library, a virtual card catalogue, a factory, an underground aqueduct system, an organism (e.g., an internal view of a human body), a cable system, a mechanism (e.g., a motor, a computer, a computer circuit), and a warehouse. A photorealistic, 3-D model is used as a platform for the services provided. These services may include mapping services, browsing services, historical services, educational services, entertainment services, and commercial services, such as advertising.

Abstract: A continuous monitoring system for regulating access to a computer system or other restricted environment is disclosed. The system employs real-time face recognition to initially detect the presence of an authorized individual and to grant the individual access to the computer system. In some embodiments, the system also employs real-time face recognition to continuously or periodically track the continued presence of the authorized individual. Access to the computer system is revoked when the individual's presence is no longer detected. In other embodiments, the system employs a screen saver program to deny access to the computer system when a predetermined period of user inactivity is detected.