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7627195 |
Focus correction using fractional fourier transform operator approximations
A computer-implemented method for correcting misfocus in original image data using at least one approximation of a fractional Fourier transform operation. Original image data may comprise a light...
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7609903 |
Spread spectrum signal demodulating method and apparatus
A spread spectrum signal demodulating method whereby spread-code synchronous acquisition and carrier synchronous acquisition are performed using FFT at high speed, wherein a received signal, of...
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7606388 |
Contents border detection apparatus, monitoring method, and contents location detection method and program and storage medium therefor
A contents border detection apparatus and monitoring method. The apparatus comprises a digital watermark detector for detecting a digital watermark embedded in contents for which a time element is...
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7602997 |
Method of super-resolving images
This invention presents a super-resolution image reconstruction from a sequence of aliased imagery. The sub-pixel shifts (displacement) among the images are unknown due to uncontrolled natural...
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7599517 |
Digital watermark detecting device and method thereof
There is provided a digital watermarking detecting device that can accurately detect watermarking information weakened by an attack such as image cut-out, scaling or the like without increasing a...
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7590293 |
Non-iterative method to restore image from transformed component data
An original image or other data sequence is modified with an internal marker value, and is communicated (stored and/or transmitted) as one component of a transform having multiple complementary...
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7583425 |
High performance adaptive optics with a reconstructed coherent wave front
An adaptive optics system comprises a beamsplitter configured to divide an incoming beam with an aberrated wave front into a first input beam and a second input beam, a microelectromechanical...
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7581191 |
Graphical user interface for 3-D in-vivo imaging
The present invention provides a computer system and user interface that allows a user to readily view and analyze two-dimensional and three-dimensional in vivo images and imaging data. The user...
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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...
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7574050 |
Image page search for arbitrary textual information
The approach of the present invention is called optical word recognition (OWR). The present invention advantageously uses techniques to search for arbitrary textual information contained in imaged...
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7570784 |
Identification and protection of security documents
The present invention provides methods and systems that are helpful for authenticating or protecting physical and electronic documents like financial documents and identification documents. One...
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7558414 |
Iterative image reconstruction
Systems and methods using an image produced by a constrained image reconstruction process as a constraint in a forward iterative reconstruction process are described. One example system may include...
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7545967 |
System and method for generating composite subtraction images for magnetic resonance imaging
In time-resolved contrast-enhanced magnetic resonance angiography, a measure quantifying image quality provides a basis for generating a linear filtered composite image by facilitating selection of...
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7545966 |
Efficient methods for reconstruction and deblurring of magnetic resonance images
Methods are described for efficient reconstruction of MRI data. In one practice, new reconstruction algorithms for non-uniformly sampled k-space data are presented. In the disclosed algorithms,...
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7539354 |
Image database key generation method
A method of generating a matching key for an image is disclosed. The matching key is substantially invariant to rotation, scale and translation. The method starts by forming a spatial domain...
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7539344 |
Boundary detection method between areas having different features in image data
An image processing device includes a feature emphasis unit for extracting first image frequency information from image data for each first unit area, a boundary provisional determination unit for...
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7531780 |
Spectrum analyzer device on a chip
A spectrum analyzer device is provided having an optical “pixel” sensor array in a focal plane on a single chip, and a dedicated processor for each optical sensor that performs a pixel-based...
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7529392 |
Image processing system and medical examination apparatus for correlating features in medical images
An image processing system, for correlating shapes in multi-dimensional images including image data processor for estimating a similarity measure including estimating two image signals representing...
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7522780 |
Frequency domain processing of scanning acoustic imaging signals
Method and apparatus useful in the inspection of a target comprises scanning the target with a pulsed acoustic beam, sensing the pulsed beam after it has been modified by interaction with the...
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7519231 |
Hierarchical scheme for blur detection in a digital image
Methods and apparatuses are provided for detecting blur within digital images using Cepstrum analysis blur detection techniques that are able to detect motion blur and/or out-of-focus blur.
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7509861 |
Method and device for local spectral analysis of an ultrasonic signal
The method decomposes the radio frequency signal into sub-bands by filtering, for example with a time-frequency transform. From the coefficients acquired through decomposition a matrix of spectral...
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7508966 |
Optical fourier systems and methods for medical image processing
A preferred embodiment optical system for processing a medical image includes an input image, a light source emitting a light beam which is directed at the input image, a first Fourier optical...
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7502526 |
Filtering artifact from fMRI data using the stockwell transform
The present invention relates to a method for filtering time-varying MR signal data prior to image reconstruction. A one-dimensional FT is applied to the time-varying MR signal data along each...
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7489826 |
Compensating for errors in performance sensitive transformations
The invention provides a method, a data analyzing system, an apparatus, and article of manufacture which reduce the error in transform equations in which constants are replaced by approximations....
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7486839 |
Efficient method for MR image reconstruction using coil sensitivity encoding
SENSitivity Encoding (SENSE) has demonstrated potential for significant scan time reduction using multiple receiver channels. SENSE reconstruction algorithms for non-uniformly sampled data proposed...
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7483573 |
Method for evaluating the signals of an electronic image sensor during pattern recognition of image contents in a test piece
Signals generated by an electronic image sensor, during pattern recognition of image contents in a test piece, are evaluated. The image sensor receives an input light signal and emits an electrical...
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7483569 |
Reduced complexity correlation filters
A methodology is described to reduce the complexity of filters for face recognition by reducing the memory requirement to, for example, 2 bits/pixel in the frequency domain. Reduced-complexity...
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7477785 |
Fuzzy image comparator
A system and method for improved image comparison is provided. An adjustable tolerance level may be set for comparing the images, and filtering may be applied to the images, for example, to...
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7450762 |
Method and arrangement for determining an object contour
A method is disclosed for determining a sought object contour in a digital microscope image, which includes a plurality of image elements and reproduces a biological material. The method includes...
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7444032 |
Demodulation and phase estimation of two-dimensional patterns
A method ( 100 ) of demodulating a real two-dimensional pattern ( 110 ) is disclosed. The method ( 100 ) estimates ( 120, 130 ) a quadrature two-dimensional pattern from the real two-dimensional...
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7421139 |
Reducing errors in performance sensitive transformations
The invention provides a method, data compression system, apparatus, and article of manufacture which reduce the error in transform equations in which constants are replaced by approximations....
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7418125 |
Position detection technique
An apparatus for detecting a position of a region, corresponding to a mark, in image data, as a mark position, the mark including periodically arranged patterns. A first unit obtains a real-space...
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7417797 |
Image correction using individual manipulation of microlenses in a microlens array
A system constructs a composite image using focus assessment information of image regions.
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7415164 |
Modeling scenes in videos using spectral similarity
A computer implemented method models a scene in a video acquired by a camera. For each pixel in each frame of the video, a time series of intensities of the pixel is acquired. A harmonic series is...
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7415152 |
Method and system for constructing a 3D representation of a face from a 2D representation
A method and system for generating 3D images of faces from 2D images, for generating 2D images of the faces at different image conditions from the 3D images, and for recognizing a 2D image of a...
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7409091 |
Human detection method and apparatus
A human detection method and apparatus are provided. In the method, a person is detected from an image provided by a digital video camera. The method includes (a) initializing parameters used for a...
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7386729 |
Method of inserting/detecting digital watermark and apparatus for using thereof
For the purpose of designing watermark to be robust against image modification such as geometric modification (rotating, cutting, enlarging/shrinking, etc.), compression, and blurring, the...
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7379599 |
Model based object recognition method using a texture engine
A geometric hashing method usable by a machine vision system for model-based recognition of an object. More specifically, in a computer having a texture engine, a method of pattern matching for...
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7349555 |
Documents and apparatus to encode documents
The present invention relates generally to documents, e.g., such as legal tender, currency and identification documents, and apparatus for encoding documents. One claim recites: a physical document...
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7315650 |
Image processor
(1) Orthogonal transformation is applied to sample images based on the images of a normalized orthogonal system, and component groups are determined. A plurality of comparison target images are...
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7315636 |
Generation of reconstructed images
A method and system are presented for fast generation of one or more 2D DRRs of an object. 3D scan data of the object (such as CT scan data) are generated. A 3D fast Fourier transform F(u,v,w) is...
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7313250 |
Method and system for frequency domain watermarking using a phase based filter signature
The present invention is a digital watermarking technique Phasemark™ for image authentication. Using a signature extracted from the original image, the present invention hides an encoded version...
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7305089 |
Picture taking apparatus and method of controlling same
The camera includes a sensor for sensing the photographer's iris image and registering the image in advance. The iris image is recorded in the image of a subject by a digital MCU at a timing...
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7302100 |
Method for increasing detectable light energy without changing shape content in radial and angular or rotational analysis of images for shape content and matching
A segmented radial spatial light modulator has an active optic area comprising a plurality of radially extending active optic modulators disposed at various angular orientations with respect to a...
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7298882 |
Generalized measure of image quality in medical X-ray imaging
A method for defining image quality characteristics of X-ray based medical projection imaging devices is provided. A spatial frequency-dependent signal-to-noise ratio function includes image...
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7295693 |
Methods and software for self-gating a set of images
Methods and software for self-gating a set of images. In exemplary embodiments, a fundamental heart frequency of the patient can be measured without the use of an ECG signal. In one method, the...
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7286717 |
Image data processing device processing a plurality of series of data items simultaneously in parallel
In a data conversion device, a plurality of series of data to be converted is input from a buffer memory device to a data processor. The data processor processes a plurality of the series of the...
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7280694 |
Apparatus and method for identifying an organ from an input ultrasound image signal
This invention discloses an apparatus and method for identifying an organ within a human body by calculating the distances of an input ultrasound image signal and the ultrasound image signals...
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7277597 |
Partial k-space reconstruction for radial k-space trajectories in magnetic resonance imaging
A modified projection on convex sets (POCS) algorithm and method for partial k-space reconstruction using low resolution phase maps for scaling full sets of reconstructed k-space data. The...
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7274831 |
High quality anti-aliasing
An antialiasing method and apparatus suitable for antialiasing a variety of image types, including fonts, large images, and very small images. The antialiasing technique may represent the edge of a...
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