Abstract: Devices and techniques are described for generating three-dimensional (3D) models of objects. Depth data acquired from a depth camera system is used with data about surface normals to generate a 3D model of the object. The depth camera system may use cameras or projectors with different baseline distances to generate depth data. The use of different baseline distances may improve accuracy of the depth data. The data about surface normals may be calculated from images acquired when the object is illuminated from different angles. By using the depth data and relative depth changes from the surface normal data, high resolution spatial data may be generated at high frame rates. Data from multiple baseline distances may also be combined to improve performance.

Abstract: A display system having a modulated light source is configured to include one or more non-visible wavelengths as part of the display sequence. In one implementation a color wheel, configured to modulate the wavelengths emitted by a projector, includes an infrared (IR) segment, allowing for projection of an IR image. The wavelength modulated non-visible light may be spatially modulated to generate a structured light pattern, for signaling, to synchronization with other devices, and so forth.

Abstract: Structured light generated by a projector may be recovered by a camera to determine three-dimensional data about a scene. The structured light signal acquired by the camera may be impaired due to interference from flickering sources of illumination such as lights, electronic displays, and so forth. This optical interference to an image acquisition system, such as a structured light system, is mitigated by modifying operation of a camera by applying a sampling coefficient to the camera's frame rate or by presenting structured light frames during times non-coincident with the interference.

Abstract: An augmented reality system is configured to identify and track user gestures, sounds, and interaction with physical objects to designate active zones. These active zones may be allocated additional processing and functional resources. Gestures may include particular hand or body motions, orientation of a user's head, and so forth. Sounds may include clapping, clicks, whistles, taps, footfalls, humming, singing, speech, and so forth. Active areas as well as inactive areas of lesser or no interest may be designated as well.

Abstract: An architecture has one or more systems for generating augmented reality environments configured to access cloud services over a network. A user is authenticated within the environments, and once authenticated is permitted to interact with the cloud services using the augmented reality environments as well as client resources provided within the environments. The client resources may include devices or things that are primary intended for use within the environments, and devices or things that are not typically associated with augmented reality environments. The architecture enables the client resources to function as thin client interfaces to the cloud services.

Abstract: Structured light patterns are projected onto an object and images of the structured light interacting with the surface of the object are acquired, as well as grayscale information. Edges within the structured light patterns are detected and depth sample points on the edges are used to determine distance to those sample points. The grayscale information is used to construct surface normals. From these normals relative surface contours such as curves or slopes may be determined. A model of a surface of the object is generated using the distances and the contours.

Abstract: In analyzing a scene, a projection device may project an image onto surfaces or objects within the scene. The image may include user interface elements as well as structured light patterns for analyzing shapes of the surfaces and objects. The intensity of the reflection of the projected light may be monitored and used to derive an audio signal representing sound that occurs within the scene. The audio signal may be analyzed to detect and recognize user utterances and speech, which may be interpreted as commands.

Abstract: Systems and techniques for providing feedback to users within an environment that interact with user interfaces (UIs) that are projected within the environment. For instance, the systems and techniques may project a UI that includes one or more selectable portions, such as keys, icons, sliders, dials, or any other type of control. After projecting the UI, the systems and techniques may identify the user attempting to interact with the UI. In response, the systems and techniques may provide feedback to the user indicating that the user has engaged the UI. For instance, the systems and techniques may visually alter the projected UI, may output a sound via one or more speakers within the environment, or may provide the feedback in any other manner.

Abstract: A method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: Objects and their placement within a particular scene may be characterized using structured light with no or minimal manual intervention or calibration to the scene. The structured light pattern may be rendered with visible light, yet imperceptible to users, by generating a set of opposing excursions in one or more image properties for durations which are shorter than the integration time of the human eye. A set of assumptions and ongoing testing of those assumptions against physical objects identified within the environment allows characterization of the scene and the objects therein.

Abstract: A method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: Two or more imagers having associated frame rates are each configured with a global shutter having an exposure interval less than a frame interval. The exposure interval for a first imager is offset from the exposure interval of a second imager such that the first imager is exposed while the second imager is not exposed. When interleaved, an effective frame rate exceeds the individual frame rates provided by the individual imagers. This interleaved imaging system may be used to recover, at high frame rates, images that are projected from spatial light modulators.

Abstract: A method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: The present invention is a method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: The present invention is a method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: The present invention is a method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: The present invention is a method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from said video input board, said adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, said signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

Abstract: A licensing system is disclosed for performing synchronous encryption with a client over an IP-compliant network. In disclosed embodiments, the system includes a licensing agent configured to pass a data structure unencrypted in an initial communication between the licensing agent/client pair and pass a first key to said client responsive to an initial communication. The licensing agent then receives the data structure from the client having designated fields encrypted according to the first key. The licensing agent then sends a second key to the client for use in subsequent communications.

Abstract: A licensing system using a firewall gateway for protecting and licensing computers is disclosed. A firewall gateway for separating a protected computer on a private network from a public network is provided. The protected computer has a client software application residing thereon that is licensed. A client module is provided that is associated with the client software application. A proxy agent is provided that is maintained by the firewall gateway. The proxy agent is configured to validate a license for the client software application.

Abstract: A downloadable software package incorporating license management software is disclosed. The software package may include a client software application and an associated licensing module for managing use of the client software application. In preferred embodiments, the licensing module is configured to detect the use of the client software application and automatically send a license validity inquiry request to a license server over a public network. The client software application is operated in accordance with the contents of a response message received from the license server. The downloadable software package may comprise a single compiled executable application downloaded by a user onto a computer over the public network.