Abstract: A system and method for an imaging circadiometer that measures the spatial distribution of eye-mediated, non-image-forming optical radiation within the visible spectrum.

Abstract: A system and method for an imaging circadiometer that measures the spatial distribution of eye-mediated, non-image-forming optical radiation within the visible spectrum.

Abstract: The disclosed techniques provide systems and methods for detecting coordinated attacks on social networking databases containing personal end-user data. More specifically, various advanced persistent threat (APT) detection procedures are described that explore the commonality between specific targets of various private data accesses. In one embodiment, a threat detection tool is configured to process various private data accesses initiated by a source user account in order to identify associated query structures. The tool then applies one or more filters to the private data accesses to identify a subset of the private data accesses that have query structures indicating specific targets and processes these specific targets to determine if an access pattern exists. The access pattern can indicate, for example, a measure of commonality among two or more of the specific targets. If an access pattern exists, the threat detection tool can trigger an alarm.

Abstract: A multicamera imaging system includes multiple imaging subsystems. Each subsystem includes imaging optics, an optical filter, an optional shutter, a digital imaging sensor, and an analog-to-digital converter. After optional scaling, image displacement, keystone and other corrections, the captured images are aligned to result in a multi-layer registered image. Illumination metrics of individual pixels of the registered image are then calculated. The spatial distribution of the optical illumination properties of planar objects are measured, including colorimetric, photometric, radiometric, and spectroradiometric characterization and calibration of digital image displays and radiant scenes.

Abstract: A multicamera imaging system includes multiple imaging subsystems. Each subsystem includes imaging optics, an optical filter, an optional shutter, a digital imaging sensor, and an analog-to-digital converter. After optional scaling, image displacement, keystone and other corrections, the captured images are aligned to result in a multi-layer registered image. Illumination metrics of individual pixels of the registered image are then calculated. The spatial distribution of the optical illumination properties of planar objects are measured, including colorimetric, photometric, radiometric, and spectroradiometric characterization and calibration of digital image displays and radiant scenes.

Abstract: The disclosed techniques provide systems and methods for detecting coordinated attacks on social networking databases containing personal end-user data. More specifically, various advanced persistent threat (APT) detection procedures are described that explore the commonality between specific targets of various private data accesses. In one embodiment, a threat detection tool is configured to process various private data accesses initiated by a source user account in order to identify associated query structures. The tool then applies one or more filters to the private data accesses to identify a subset of the private data accesses that have query structures indicating specific targets and processes these specific targets to determine if an access pattern exists. The access pattern can indicate, for example, a measure of commonality among two or more of the specific targets. If an access pattern exists, the threat detection tool can trigger an alarm.

Abstract: The disclosed techniques provide systems and methods for detecting coordinated attacks on social networking databases containing personal end-user data. More specifically, various advanced persistent threat (APT) detection procedures are described that explore the commonality between specific targets of various private data accesses. In one embodiment, a threat detection tool is configured to process various private data accesses initiated by a source user account in order to identify associated query structures. The tool then applies one or more filters to the private data accesses to identify a subset of the private data accesses that have query structures indicating specific targets and processes these specific targets to determine if an access pattern exists. The access pattern can indicate, for example, a measure of commonality among two or more of the specific targets. If an access pattern exists, the threat detection tool can trigger an alarm.