| 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 |
| 20090080700 | PROJECTILE TRACKING SYSTEM - A system and method for determining the track of a projectile use a thermal signature of the projectile. Sequential infrared image frames are acquired from a sensor at a given position. A set of frames containing spots with characteristics consistent with a projectile in flight are identified. A possible projectile track solution for said spots is identified. A thermal signature value for each pixel of each spot of the possible solution is determined. The determined thermal signature is then compared to an actual thermal signature for a substantially similar projectile track to ascertain whether the determined thermal signature substantially matches the actual thermal signature, which indicates that the possible projectile track solution is the correct solution. | 03-26-2009 |
| 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 |
| 20090109490 | METHOD OF PRODUCING IMPROVED LENTICULAR IMAGES - An image comprising a plurality of interlaced images is provided, the image is halftone processed according to one or more processes, and the image is printed, for example, using an inkjet printer. The image is halftone processed according a predetermined function depending at least in part on a gray scale level for a given pixel and those nearby the given pixel. The predetermined function can operate on a continuous tone version or on a printed-dot model of the image and may include a predetermined error filter where error is distributed to pixels corresponding to the same interlaced image from which the error accumulates. The image may be post-processed to arrange dots and/or shift columns of pixels to minimize overlap error or modified to include extra pixels to align the interlaced images under the lenses. | 04-30-2009 |
| 20100060939 | METHOD OF PRODUCING IMPROVED LENTICULAR IMAGES - An image comprising a plurality of interlaced images is provided, and the image is halftone processed according to one or more processes. The image is halftone processed according to a predetermined function depending at least in part on a gray scale level for a given pixel and on gray scale levels for local pixels nearby the given pixel. The predetermined function can operate on a continuous tone version or on a printed-dot model of the image. Alternatively, the predetermined function may include a predetermined error filter where error which is distributed to pixels corresponding to the same interlaced image from which the error accumulates. The image may be post-processed to arrange dots and/or shift columns of pixels to minimize overlap error. The image may be modified to include extra pixels to align the interlaced images under the lenses. | 03-11-2010 |
| 20110134223 | METHOD AND A SYSTEM FOR REDUCING ARTIFACTS - A method for preparing an article of lenticular imaging. The method comprises receiving a plurality of source images, superimposing at least one deghosting element on the plurality of source images, the deghosting element being formed to reduce an estimated ghosting artifact from the article, interlacing the plurality of processed source images so as to form a spatially multiplexed image, and preparing the article by attaching an optical element to the spatially multiplexed image. | 06-09-2011 |
| 20110310436 | IMAGE QUANTIZATION FOR DIGITAL PRINTING - An image may be quantized into a pattern of dots, e.g., for devices capable of printing dots of variable size and variable color intensity. One may use a pre-determined mapping of the continuous-tone intensity value into a discrete vector of intensity values, and each intensity value may then be processed by a set of binary quantizers. The resulting binary vector may then be mapped into a combination of available dot sizes and color intensities. Through a scalar multiplier, the pre-determined mapping of continuous-tone intensity values may be used as multiple print resolutions. | 12-22-2011 |
