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Class 382/280 - Fourier transform


Subclass of Class 382 - Image analysis
Definition: Subject matter wherein a Fourier transform is performed
No. of applications: 78
Last issue date: 01/26/2012


1    
Application No.Application TitleIssue Date
20120019653INSPECTION APPARATUS AND MEASUREMENT METHOD
An inspection apparatus including: an insertion portion which is inserted into a device under inspection; a projection unit which projects light which forms a striped pattern onto an object inside the device, the striped pattern includes a plurality of linear patterns u...
01/26/2012
20110274369COMPOSITE EVALUATION
A method of evaluating a composite structure in which a portion of the structure is imaged and subsequently transformed to provide a 2D output of the angular distribution of features, eg a 2D FFT. A weighting function is applied to the output to compensate for variation...
11/10/2011
20110267482MULTIPLEXED IMAGING
An imaging method comprises acquiring image data in which image components are spatially modulated at distinct spatial frequencies, transforming the image data into the Fourier domain and separating the image components in the Fourier domain. The image components may be...
11/03/2011
20110254944SCANNING CHARGED PARTICLE MICROSCOPE
When a scanning image of a scanning charged particle microscope is impaired by an external disturbance, a disturbance frequency can be simply and precisely analyzed from the image in order to specify the external disturbance. The maximum frequency analyzable by the scan...
10/20/2011
20110200272DISCRETE FRACTIONAL FOURIER NUMERICAL ENVIRONMENTS FOR COMPUTER MODELING OF IMAGE PROPAGATION THROUGH A PHYSICAL MEDIUM IN RESTORATION AND OTHER APPLICATIONS
A system for numerically modeling evolution of an image propagating through a medium includes image using image data and a propagation medium model. The propagation medium model aligns a propagation centerline of the propagation medium model relative to the center of th...
08/18/2011
20110158489DETECTION DEVICES AND DETECTION METHOD
A detection device for detecting specific operation information of a subject is provided and includes an image capturing unit, an image processing unit, a signal processing unit, and a detection unit. The image capturing unit captures pictures of the subject to generate...
06/30/2011
20110038559CYCLIC NOISE REMOVAL IN BOREHOLE IMAGING
A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed ima...
02/17/2011
20100195931IMAGE RECONSTRUCTING APPARATUS AND IMAGE RECONSTRUCTING METHOD
When a group of (pre-processed) projection data is stored into a projection-data storage unit, a Gaussian-based expansion-data creating unit creates a group of Gaussian-based expansion data that is expanded from each of the group of projection data through linear combin...
08/05/2010
20100150225Adaptive Frequency Domain Filtering For Phase Plane Correlation
In a Phase Plane Correlation (PPC) process, using adaptive frequency domain filtering to aid in generating candidate motion vectors. It is determined when it is beneficial to pre-filter an input image, prior to a PPC process. This results in more reliable and consistent...
06/17/2010
20100141829APPARATUS AND METHOD FOR OPTICALLY AMPLIFIED IMAGING
An apparatus and method for ultrafast real-time optical imaging that can be used for imaging dynamic events such as microfluidics or laser surgery is provided. The apparatus and methods encode spatial information from a sample into a back reflection of a two-dimensional...
06/10/2010
20100091146WAVEFRONT ABERRATION AND DISTANCE MEASUREMENT PHASE CAMERA
A system consisting of a phase camera with microlenses placed in the focal point of a converging lens, wherein the camera data, processed using a combined Fourier “Slice” and fast Fourier transform edge detection technique, provide both a three-dimensional wavefront...
04/15/2010
20100092050METHOD OF PROCESSING A RADON DATA BASED IMAGE FUNCTION AND IMAGING METHOD
An image processing method for providing a digitized image as an approximation of an image function ƒ, wherein the digitized image comprises a plurality of pixels with a predetermined pixel size, comprises the steps of providing the image function ƒ from Radon data co...
04/15/2010
20100080453SYSTEM FOR RECOVERY OF DEGRADED IMAGES
A system for recovering degraded images captured through atmospheric turbulence, or other atmospheric inhomogeneities, such as snow, rain, smoke, fog, or underwater fluctuations, is provided having an imager for capturing through such turbulence both a degraded image of...
04/01/2010
20100067826Method for Image Skew Detection
A method for calculating a skew angle of an original image, executed at least in part on a computer system stores image data for the original image in an electronic memory, then forms an energy-normalized image according to the relative contrast amplitude of image featu...
03/18/2010
20100067827OPTICAL IMAGE PROCESSING USING MINIMUM PHASE FUNCTIONS
A method utilizes an optical image processing system. The method includes providing a measured magnitude of the Fourier transform of a complex transmission function of an object or optical image. The method further includes providing an estimated phase term of the Fouri...
03/18/2010
20100067820IMAGE PROCESSING APPARATUS AND STORAGE MEDIUM STORING IMAGE PROCESSING PROGRAM
An image processing apparatus includes a registration unit for executing a registration process among a plurality of images; an image synthesis unit for superposing the plurality of images subjected to registration in the registration unit to synthesize the plurality of...
03/18/2010
20100054626METHOD OF FAST IMAGE RECONSTRUCTION
The present invention provides a method of fast image construction. The wavelength information is extracted in advance based on characteristics of a Fourier domain Optical Coherent Tomography (OCT) system, to obtain a vector of wavelengths which are in a uniform distrib...
03/04/2010
20100039110MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD
An MRI apparatus capable of performing a high-speed operation for removing aliasing from the data measured by non-Cartesian imaging in a real space with a small amount of operation is provided. Non-Cartesian data sampling is performed by thinning the number of data by u...
02/18/2010
20100014732Multimodal Image Reconstruction With Zonal Smoothing
Computer-implemented methods of reconstructing an image object for a measured object in object space from image data in data space cause a computer system to execute instructions for providing zonal information separating the object space into at least two zones, provid...
01/21/2010
20100008589IMAGE DESCRIPTOR FOR IMAGE RECOGNITION
A method of deriving a representation of an image by processing signals corresponding to the image, the method comprises deriving a function of the image, where the function of a translated, scaled or rotated version of the image is a translated or scaled version of the...
01/14/2010
20100002955Method for image reconstruction using sparsity-Constrained correction
Pixel images {circumflex over (f)} are created from projections (q1 . . . qp) by backprojecting selected projections to produce intermediate images (Il,m), and performing digital image coordinate transformations and/or resampling on sele...
01/07/2010
20090297018Image reconstruction with incomplete fourier-space magnitude data combined with real-space information
Image reconstruction is based on phase retrieval by combining incomplete Fourier-space magnitude data with real-space information. Phase retrieval is performed based on the Fourier-space magnitude data, where the real-space information is expressed in a form suitable to...
12/03/2009
20090290806Method and apparatus for the restoration of degraded multi-channel images
An imager and method for operating the imager. The imager comprises a pixel array for producing an image signal and an image processor configured to restore images degraded by inter-channel degradations and intra-channel degradations in all channels of the image simulta...
11/26/2009
20090285446Signal Embedding and Detection using Circular Structures in a Transform Domain of a Media Signal
Machine readable signals embedded in other media signals include a circular structure in a transform domain to facilitate detection. The machine readable signals are not apparent to human observers of rendered media containing the machine readable signals, such as image...
11/19/2009
20090268937Decoding Watermark Information Items of a Watermarked Audio or Video Signal Using Correlation
Watermark information consists of several data symbols which are embedded continuously in an audio or a video signal using modulation with a pseudo-random sequence if spread spectrum technology is used. At decoder site the watermark information is regained using correla...
10/29/2009
20090252436Method for visualization of multidimensional data
The method provides a visualization technique for rendering multidimensional data points as 2D curves on a 3D plot with the third dimension representing their order in the multidimensional data set. The technique uses colour palettes to render individual data curves, wh...
10/08/2009
20090245686VIDEO BANDWIDTH RESOLUATION IN DFT-BASED SPECTRUM ANALYSIS
A method and apparatus for improved video bandwidth resolution in DFT-based spectrum analysis is disclosed. A first embodiment comprises an emulation of a continuous range of video bandwidths in DFT-based spectrum analysis using overlapping resolution bandwidth frames. ...
10/01/2009
20090232377ITERATIVE METHODS FOR DOSE REDUCTION AND IMAGE ENHANCEMENT IN TOMOGRAPHY
A system and method for creating a three dimensional cross sectional image of an object by the reconstruction of its projections that have been iteratively refined through modification in object space and Fourier space is disclosed. The invention provides systems and me...
09/17/2009
20090225407Microscope device and image processing method
A diffraction grating produces the first diffraction light in a symmetrical direction with respect to the 0-th diffraction light and the optical axis. Each light flux forms two flux interference patterns on a sample surface through a second objective lens and a first ob...
09/10/2009
20090219416IMAGE PROCESSING SYSTEM AND RECORDING MEDIUM RECORDING IMAGE PROCESSING PROGRAM
An image processing system includes a frequency decomposition unit adapted to decompose an image signal into a high frequency component and a low frequency component, a high frequency separation unit adapted to separate the high frequency component into an invalid compo...
09/03/2009
20090201379Smart Camera with Modular Expansion Capability Including a Function Module that Performs Image Processing
A smart camera with modular expansion capabilities, including a housing, a camera directly attached to the housing for acquiring an image of an object, a functional unit comprised in the housing and coupled to the camera, where the functional unit is configurable to imp...
08/13/2009
20090154832ALPHA-MASKED RST IMAGE REGISTRATION
A method (500) of determining rotation and scale transformation parameters is disclosed. The method (500) determines a plurality of weight values associated with one or more parts of at least one of a first and second image (e.g., 154. 155). A repre...
06/18/2009
20090136104Noise Reduction Apparatus, Systems, and Methods
This document describes a general system for noise reduction, as well as a specific system for Magnetic Resonance Imaging (MRI) and Nuclear Quadrupole Resonance (NQR). The general system, which is called Calculated Readout by Spectral Parallelism (CRISP), involves recon...
05/28/2009
20090136154System and method for image sensing and processing
A system and method for image sensing and processing using the Arithmetic Fourier Transform (AFT). An image sensing array has sensors located based on a set of Farey fractions, each multiplied by a unit block size of the array. Similar sampling can be achieved by interp...
05/28/2009
20090103832METHOD AND SYSTEM FOR ENABLING REAL-TIME SPECKLE PROCESSING USING HARDWARE PLATFORMS
Embodiments of the invention enable real-time speckle processing of video feeds that further enables the Speckle algorithm to be applied in numerous real-time applications. Exemplary embodiments of the invention include hardware, software and machine readable mediums fo...
04/23/2009
20090080806FAST METHOD OF SUPER-RESOLUTION PROCESSING
The present invention provides a fast method of super-resolution processing which realizes speedup of the high-speed super-resolution processing by speeding up the calculations of an evaluation function and the differential of the evaluation function with respect to a h...
03/26/2009
20090052794COMPUTING ARBITRARY FRACTIONAL POWERS OF A TRANSFORM OPERATOR FROM SELECTED PRECOMPUTED FRACTIONAL POWERS OF THE OPERATOR
A computer-implemented system and method for correcting misfocus in original particle beam image data by using a fractional Fourier transform operation or an approximation of it. In one embodiment, the particle beam image data is produced by an electron microscope. The ...
02/26/2009
20090041381Method and Apparatus for Radiance Processing by Demultiplexing in the Frequency Domain
Method and apparatus for radiance processing by demultiplexing in the frequency domain. A frequency domain demultiplexing module obtains a radiance image captured with a lens-based radiance camera. The image includes optically mixed spatial and angular frequency compone...
02/12/2009
20090041382SIMULATION METHOD OF OPTICAL IMAGE INTENSITY DISTRIBUTION, PROGRAM, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE
The intensity distribution of an optical image in a resist film is calculated (S1); the intensity distribution of the optical image is transformed through a Fourier transform in a periodic direction of the intensity distribution of the optical image (S2) a...
02/12/2009
20090034875IMAGE DETECTION APPARATUS AND METHOD
Provided is an apparatus and method for detecting an image enhanced from a low resolution image to a high resolution image. An apparatus for detecting an image converted from a first resolution to a second resolution higher than the first resolution, the apparatus inclu...
02/05/2009
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