Patent application number | Description | Published |
20080279446 | SYSTEM AND TECHNIQUE FOR RETRIEVING DEPTH INFORMATION ABOUT A SURFACE BY PROJECTING A COMPOSITE IMAGE OF MODULATED LIGHT PATTERNS - A technique, associated system and program code, for retrieving depth information about at least one surface of an object. Core features include: projecting a composite image comprising a plurality of modulated structured light patterns, at the object; capturing an image reflected from the surface; and recovering pattern information from the reflected image, for each of the modulated structured light patterns. Pattern information is preferably recovered for each modulated structured light pattern used to create the composite, by performing a demodulation of the reflected image. Reconstruction of the surface can be accomplished by using depth information from the recovered patterns to produce a depth map/mapping thereof. Each signal waveform used for the modulation of a respective structured light pattern, is distinct from each of the other signal waveforms used for the modulation of other structured light patterns of a composite image; these signal waveforms may be selected from suitable types in any combination of distinct signal waveforms, provided the waveforms used are uncorrelated with respect to each other. The depth map/mapping to be utilized in a host of applications, for example: displaying a 3-D view of the object; virtual reality user-interaction interface with a computerized device; face—or other animal feature or inanimate object—recognition and comparison techniques for security or identification purposes; and 3-D video teleconferencing/telecollaboration. | 11-13-2008 |
20090016572 | System and technique for retrieving depth information about a surface by projecting a composite image of modulated light patterns - A technique, associated system and program code, for retrieving depth information about at least one surface of an object, such as an anatomical feature. Core features include: projecting a composite image comprising a plurality of modulated structured light patterns, at the anatomical feature; capturing an image reflected from the surface; and recovering pattern information from the reflected image, for each of the modulated structured light patterns. Pattern information is preferably recovered for each modulated structured light pattern used to create the composite, by performing a demodulation of the reflected image. Reconstruction of the surface can be accomplished by using depth information from the recovered patterns to produce a depth map/mapping thereof. Each signal waveform used for the modulation of a respective structured light pattern, is distinct from each of the other signal waveforms used for the modulation of other structured light patterns of a composite image; these signal waveforms may be selected from suitable types in any combination of distinct signal waveforms, provided the waveforms used are uncorrelated with respect to each other. The depth map/mapping to be utilized in a host of applications, for example: displaying a 3-D view of the object; virtual reality user-interaction interface with a computerized device; face—or other animal feature or inanimate object—recognition and comparison techniques for security or identification purposes; and 3-D video teleconferencing/telecollaboration. | 01-15-2009 |
20090103777 | Lock and hold structured light illumination - A method, system, and associated program code, for 3-dimentional image acquisition, using structured light illumination, of a surface-of-interest under observation by at least one camera. One aspect includes: illuminating the surface-of-interest, while static/at rest, with structured light to obtain initial depth map data therefor; while projecting a hold pattern comprised of a plurality of snake-stripes at the static surface-of-interest, assigning an identity to and an initial lock position of each of the snake-stripes of the hold pattern; and while projecting the hold pattern, tracking, from frame-to-frame each of the snake-stripes. Another aspect includes: projecting a hold pattern comprised of a plurality of snake-stripes; as the surface-of-interest moves into a region under observation by at least one camera that also comprises the projected hold pattern, assigning an identity to and an initial lock position of each snake-stripe as it sequentially illuminates the surface-of-interest; and while projecting the hold pattern, tracking, from frame-to-frame, each snake-stripe while it passes through the region. Yet another aspect includes: projecting, in sequence at the surface-of-interest positioned within a region under observation by at least one camera, a plurality of snake-stripes of a hold pattern by opening/moving a shutter cover; as each of the snake-stripes sequentially illuminates the surface-of-interest, assigning an identity to and an initial lock position of that snake-stripe; and while projecting the hold pattern, tracking, from frame-to-frame, each of the snake-stripes once it has illuminated the surface-of-interest and entered the region. | 04-23-2009 |
20120092463 | Dual-frequency Phase Multiplexing (DFPM) and Period Coded Phase Measuring (PCPM) Pattern Strategies in 3-D Structured Light Systems, and Lookup Table (LUT) Based Data Processing - A computer-implemented process, system, and computer-readable storage medium having stored thereon, program code and instructions for 3-D triangulation-based image acquisition of a contoured surface/object-of-interest under observation by at least one camera, by projecting onto the surface-of-interest a multi-frequency pattern comprising a plurality of pixels representing at least a first and second superimposed sinusoid projected simultaneously, each of the sinusoids represented by the pixels having a unique temporal frequency and each of the pixels projected to satisfy | 04-19-2012 |
20120113229 | Rotate and Hold and Scan (RAHAS) Structured Light Illumination Pattern Encoding and Decoding - A unique computer-implemented process, system, and computer-readable storage medium having stored thereon, executable program code and instructions for 3-dimentional (3-D) image acquisition of a contoured surface-of-interest under observation by at least one camera and employing a preselected SLI pattern. The system includes a 3-D video sequence capture unit having (a) one or more image-capture devices for acquiring video image data as well as color texture data of a 3-D surface-of-interest, and (b) a projector device for illuminating the surface-of-interest with a preselected SLI pattern in, first, an initial Epipolar Alignment and ending in alignment with an Orthogonal (i.e., phase) direction, and then shifting the preselected SLI pattern (‘translation’). A follow-up ‘post-processing’ stage of the technique includes analysis and processing of the 3-D video sequence captured, including the steps of: identification of Epipolar Alignment from the 3-D video sequence, tracking ‘snakes’/stripes from the initial Epipolar Alignment through alignment with the Orthogonal direction, tracking ‘snakes’/stripes through pattern shifting/translation; correcting for relative motion (object motion); determining phase and interpolating adjacent frames to achieve uniform phase shift; employing conventional PMP phase processing to obtain wrapped phase; unwrapping phase at each pixel using snake identity; using conventional techniques to map phase to world coordinates. | 05-10-2012 |
20120269404 | System and method for 3D imaging using structured light illumination - A biometrics system captures and processes a handprint image using a structured light illumination to create a 2D representation equivalent of a rolled inked handprint. A processing unit calculates 3D coordinates of the hand from the plurality of images and maps the 3D coordinates to a 2D flat surface to create a 2D representation equivalent of a rolled inked handprint. | 10-25-2012 |
20130136318 | System and method for 3D imaging using structured light illumination - A biometrics system captures and processes a handprint image using a structured light illumination to create a 2D representation equivalent of a rolled inked handprint. A processing unit calculates 3D coordinates of the hand from the plurality of images and maps the 3D coordinates to a 2D flat surface to create a 2D representation equivalent of a rolled inked handprint. | 05-30-2013 |
20130321585 | System and Method for 3D Imaging using Structured Light Illumination - A biometrics system captures and processes a handprint image using a structured light illumination to create a 2D representation equivalent of a rolled inked handprint. A processing unit calculates 3D coordinates of the hand from the plurality of images and maps the 3D coordinates to a 2D flat surface to create a 2D representation equivalent of a rolled inked handprint. | 12-05-2013 |
Patent application number | Description | Published |
20090183264 | SYSTEM AND METHOD FOR PROTECTING CONTENT IN A WIRELESS NETWORK - A method of providing access to content within a user device is disclosed and may include determining a location of the content, determining whether the content is within an allowed region, and selectively prompting a user to purchase a license to access the content. In a particular aspect, the user may be prompted to purchase the license to the access the content when the content is not within an allowed region. If the license is purchased, the user may be allowed to access the content. The license may be an unlimited license, a limited license, or a transfer license. | 07-16-2009 |
20100269156 | APPARATUS AND METHODS FOR PROVIDING AUTHORIZED DEVICE ACCESS - Methods, apparatus, and systems are described for providing an accessor device an access credential to interact with a device resource on an accessee device. An authorization entity having a trust relationship with the accessee device, or a linked subordinate authorization entity, generates the access credential. The access credential includes a modification detection indicator, at least one access privilege, and an accessor public key. The at least one access privilege corresponds to at least one device resource on the accessee device. The authorization entity forwards the access credential to the accessor device, which presents the access credential to the accessee device for authentication. Once authenticated, the accessee device grants access to one or more device resources, and controls requests to insure they are within the scope of the at least one access privilege. | 10-21-2010 |
20110010383 | SYSTEMS AND METHODS FOR STREAMLINING OVER-THE-AIR AND OVER-THE-WIRE DEVICE MANAGEMENT - Methods and systems streamline remote device management by eliminating the need to download device configuration data when no configuration changes have been made since the last device management session. A device may record data enabling it to determine whether configurations have changed since a last session with a device management server. Device management servers may record configurations of devices. While initiating a device management session, a device can inform the device management server whether an intervening configuration change has occurred. If no intervening configuration changes have occurred, the device management server can forgo obtaining the device's configuration data, saving communication time and bandwidth. If an intervening configuration change has occurred, the remote device may inform the server of the URI of the changed configuration item, enabling the server to request download of just the changed item. Alternatively, the remote device may provide changed configuration data to the device management server. | 01-13-2011 |
20130182838 | Method and apparatus for generating a privilege-based key - Disclosed is a method for generating a privilege-based key using a computer. In the method, a privilege is received from an application, and verified as being associated with the application. The computer cryptographically generates a second key using a first key and the privilege. The second key is provided to the application. | 07-18-2013 |
20130283395 | CONTENT PROTECTION IN A WIRELESS NETWORK - A method for operating a device to protect an application from unauthorized operation is provided. The application will fail to operate on the device when the device is defined outside a selected operating region. The method includes transmitting the selected operating region for the application, and receiving the application and a geographic identifier associated with the application. The geographic identifier is configured to identify the selected operating region wherein the application will operate on the device. The method further includes transmitting a request to execute the application on the device. The request includes the geographic identifier. Further included in the method is receiving a code. The code prevents an execution of the application on the device if the code is a disable code. The disable code indicates that the device is operating outside the selected operating region. An apparatus for content protection in a wireless network is also provided. | 10-24-2013 |
20130326596 | APPARATUS AND METHODS FOR PROVIDING AUTHORIZED DEVICE ACCESS - Methods, apparatus, and systems are described for providing an accessor device an access credential to interact with a device resource on an accessee device. An authorization entity having a trust relationship with the accessee device, or a linked subordinate authorization entity, generates the access credential. The access credential includes a modification detection indicator, at least one access privilege, and an accessor public key. The at least one access privilege corresponds to at least one device resource on the accessee device. The authorization entity forwards the access credential to the accessor device, which presents the access credential to the accessee device for authentication. Once authenticated, the accessee device grants access to one or more device resources, and controls requests to insure they are within the scope of the at least one access privilege. | 12-05-2013 |