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The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 7925096 | Method and apparatus for validating holograms A method and apparatus that validates a hologram by scanning the hologram at multiple angles is disclosed. The method may include scanning a document containing the hologram at a first angle to create a first image, scanning the document containing the hologram at a... | 04/12/2011 |
| 7653248 | Compression for holographic data and imagery Image pixel intensity data is transformed to a holographic representation of the image. A subset of the holographic representation is modeled. Model parameters constitute a compressed image representation. A two-dimensional Fourier transform can be applied to obtain... | 01/26/2010 |
| 7577299 | Image pickup apparatus and image pickup method A form of the image pickup apparatus of the invention is characterized by including an image pickup portion that receives a incident light from an image-pickup object and performs a photoelectric conversion of the light, and an image processing portion that performs... | 08/18/2009 |
| 7519224 | Method and apparatus for compensating data image reproduced from holographic system The present invention provides a method and apparatus for preprocessing a page image reproduced from a storage medium in a holographic system. The present invention calculates pixel sums for each lines in the page image to select a maximum sum, calculates a modified... | 04/14/2009 |
| 7428099 | Optical security system using fourier plane encoding A method of verifying the authenticity of an object is disclosed. The method may include encoding a primary image, convolving the encoded primary image with a random code, generating thereby a first reference image, transforming the first reference image, and correl... | 09/23/2008 |
| 7365858 | Systems and methods for phase measurements Preferred embodiments of the present invention are directed to systems for phase measurement which address the problem of phase noise using combinations of a number of strategies including, but not limited to, common-path interferometry, phase referencing, active st... | 04/29/2008 |
| 7362880 | Unresolved target detection improvement by use of multiple matched filters approach at different spatial phases A method and system for detecting a point source target using multiple matched filters are disclosed. A sensor, which is preferably an infrared focal plane array, includes a plurality of pixels for providing image data. A processor processes the image data from a se... | 04/22/2008 |
| 7359576 | Using difference kernels for image filtering Methods and apparatus, including computer program products, for filtering an image. A filter kernel is received to determine one or more filtered values for each pixel in a sequence of pixels, where adjacent pixels are separated by a characteristic distance in the i... | 04/15/2008 |
| 7349158 | Diffraction grating-based encoded micro-particles for multiplexed experiments Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected... | 03/25/2008 |
| 7349100 | Recording multiple spatially-heterodyned direct to digital holograms in one digital image Systems and methods are described for recording multiple spatially-heterodyned direct to digital holograms in one digital image. A method includes digitally recording, at a first reference beam-object beam angle, a first spatially-heterodyned hologram including spat... | 03/25/2008 |
| 7317814 | Authentication system and method An authentication system using a correlator that correlates an input with a reference wherein at least one of the input and reference comprises a phase volume mask having structures, preferably points, that are each less than about six microns in size and can have a... | 01/08/2008 |
| 7317465 | Image display system and method A method of displaying an image may include receiving image data for the image, and defining first and second sub-frames of the image. The first and second sub-frames may have corresponding pluralities of image elements, with each image element of the second sub-fra... | 01/08/2008 |
| 7305191 | Optical correlator system and supporting method and apparatus Multiple electrical signals (from, for example, multiple signal sources such as antennas) are converted by an electrical signal input (24) into corresponding optical signals. In one embodiment these electrical signals are comprised of temporally separated dat... | 12/04/2007 |
| 7295200 | Computer generated hologram display system A method of displaying a computer generated hologram includes displaying the image as a set of facets that approximated to the true shape of the object to be displayed. Each of these facets is populated with points that together make up the image. The invention prov... | 11/13/2007 |
| 7242808 | Method and apparatus for analysis of variables Various components of the present invention are collectively designated as Analysis of Variables Through Analog Representation (AVATAR). It is a method, processes, and apparatus for measurement and analysis of variables of different type and origin. AVATAR offers an... | 07/10/2007 |
| 7228634 | Using viewing-angle-sensitive visual tags to determine angular orientation and/or location One embodiment of the present invention provides a system that uses a visual tag to determine an angle. During operation, the system observes the visual tag from an observation point, wherein the visual tag includes an angle-sensitive image which changes in appearan... | 06/12/2007 |
| 7221760 | Information security using digital holography A method and system for encrypting multi-dimensional information utilizing digital holography is presented. A phase-shifting interferometer records the phase and amplitude information generated by a three-dimensional object at a plane located in the Fresnel diffract... | 05/22/2007 |
| 7212630 | Method and apparatus for encryption using partial information A method and apparatus of encrypting optical images using binarization or phase only information is presented with a number of ways to secure the image also being provided. An image to be encrypted is first multiplied by a random phase function. The Fourier transfor... | 05/01/2007 |
| 7190522 | Chemical synthesis using diffraction grating-based encoded optical elements An optical identification element having a synthesized chemical attached thereto includes an optical substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive variation at a grating location, said grating being emb... | 03/13/2007 |
| 7174044 | Method for character recognition based on gabor filters In a method for character recognition based on Gabor filter group the Gabor filter's joint spatial/spatial-frequency localization and capability to efficiently extract characters' local structural features are employed to extract, from the character image, informati... | 02/06/2007 |
| 7162101 | Image processing apparatus and method An image processing apparatus and method, which can appropriately extract an object even when the focus of a camera having an automatic focus adjustment function shifts from the background to the object. To this end, frame images which are sensed by an image sensing... | 01/09/2007 |
| 7154540 | System for enhancing video Pan, tilt and zoom sensors are coupled to a broadcast camera in order to determine the field of view of the broadcast camera and to make a rough estimate of a target's location in the broadcast camera's field of view. Pattern recognition techniques can be used to de... | 12/26/2006 |
| 7130092 | Apparatus and method for recording and reproducing optical information An optical information recording/reproducing apparatus generates information light by modulating light emitted by a light source device with a light modulator depending on the information to be recorded and generates reference light for recording by modulating the l... | 10/31/2006 |
| 7126755 | Method and apparatus for labeling using diffraction grating-based encoded optical identification elements A method and apparatus for labeling an item using diffraction grating-based encoded optical identification elements 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 has one or ... | 10/24/2006 |
| 7127121 | Efficient implementation of a noise removal filter A method for noise removal filtering is provided. The method includes selecting a characteristic of a test pixel, such as brightness, and comparing the brightness of the test pixel to the brightness of an adjacent pixel. The noise removal filtering is terminated if ... | 10/24/2006 |
| 7127109 | Digital interference holographic microscope and methods A simple digital holographic apparatus and method allow reconstruction of three-dimensional objects with a very narrow depth of focus or high axial resolution. A number of holograms are optically generated using different wavelengths spaced at regular intervals. The... | 10/24/2006 |
| 7119905 | Spatial-heterodyne interferometry for transmission (SHIFT) measurements Systems and methods are described for spatial-heterodyne interferometry for transmission (SHIFT) measurements. A method includes digitally recording a spatially-heterodyned hologram including spatial heterodyne fringes for Fourier analysis using a reference beam, an... | 10/10/2006 |
| 7119941 | Input output matching in optical processing The invention relates to determining a matching between discrete optical elements, such as an SLM and a CCD, and continuous optical systems, subsystems and/or elements, such as Fourier lens and individual lenslet of lenslet arrays. Exemplary processing performed by ... | 10/10/2006 |
| 7116425 | Faster processing of multiple spatially-heterodyned direct to digital holograms Systems and methods are described for faster processing of multiple spatially-heterodyned direct to digital holograms. A method includes of obtaining multiple spatially-heterodyned holograms, includes: digitally recording a first spatially-heterodyned hologram inclu... | 10/03/2006 |
| 7106510 | Wavefront coded imaging systems The present invention provides improved Wavefront Coding imaging apparatus and methods composed of optics, a detector, and processing of the detected image. The optics are constructed and arranged to have the characteristic that the transverse ray intercept curves f... | 09/12/2006 |
| 7106513 | Diffraction grating-based encoded particle An encoded particle 8 includes a particle substrate 10; at least a portion of the substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive index variation at a grating location, the grating being emb... | 09/12/2006 |
| 7095540 | Optical security system using fourier plane encoding A method of verifying the authenticity of an object is presented. The method comprises providing a primary image; providing a secondary image; encoding the primary image; providing a random code; convolving the encoded primary image with the random code, providing t... | 08/22/2006 |
| 7092344 | Apparatus for creating a multi-dimensional data signal An optical disk drive (101) is disclosed which has essentially no seek time. The drive utilizes a Virtual Head (VH) (103) which is capable of accessing any and/or all tracks in an optical disk (111) at any time. The drive utilizes a procedure by... | 08/15/2006 |
| 7092160 | Method of manufacturing of diffraction grating-based optical identification element A method for manufacturing a diffusion grating-based optical identification element is provided. The optical identification element includes a known fiber substrate, having a diffraction grating disposed therein the grating being indicative of a code when exposed to... | 08/15/2006 |
| 7085750 | Method and system for mapping a hypothesis to an analytical structure A method for mapping a hypothesis to an analytical structure includes receiving the hypothesis from an interface and generating a representation of the hypothesis. The method includes generating a script of the representation by mapping the representation into a neu... | 08/01/2006 |
| 7085430 | Correcting geometric distortion in a digitally captured image The present invention is directed generally to correcting geometric distortion in a digitally captured image. The method involves receiving an uncorrected digital image of a phantom having a plurality of fiduciary marks; locating an uncorrected digital position for ... | 08/01/2006 |
| 7085025 | Apparatus for recording optical information Optical information is stored in an optical information recording medium having an information recording layer utilizing holography with an optical information recording apparatus which includes security features. An input device is used to input individual informat... | 08/01/2006 |
| 7085026 | Apparatus and method for recording and reproducing optical information The present invention makes it possible to reduce the size of an optical system for multiplex recording or reproduction of information utilizing holography. A pick-up of an optical information recording/reproducing apparatus generates information light by spa... | 08/01/2006 |
| 7076100 | Method and apprartus thereof for detecting a hidden image in a hologram An apparatus for detecting a hidden image, which is formed in a first area of a hologram, is disclosed. The apparatus has a laser device for generating a laser beam and projecting the laser beam to the hologram, and a sensing device for sensing light that reflects f... | 07/11/2006 |
| 7050635 | Multi-dimensional pattern recognition by use of digital holography A method and system for performing three-dimensional pattern recognition by use of digital holography is disclosed. The complex amplitude distribution generated by an object is recorded by phase-shifting interferometry. The digital hologram contains information abou... | 05/23/2006 |
