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Class 382/281 - Walsh, Hough, or Hadamard transform


Subclass of Class 382 - Image analysis
Definition: Subject matter wherein a Walsh, Hough, or Hadamard transform
No. of patents: 136
Last issue date: 04/03/2012


1        
NumberTitleIssue Date
8150207Accelerating the hough transform
The present disclosure describes a method and apparatus for accelerating computation of a Hough transform of a plurality of digital images of known width and height dimensions. The method includes determining a plurality of Hough values for each pixel location based...
04/03/2012
8107767Data transform apparatus and control method thereof
A data transform apparatus transforms four integer data D0-D3 into one DC coefficient Y0 and three AC coefficients Y1-Y3 as lossless-Hadamard transform coefficients. A first calculation unit group adds date D0 to respective ...
01/31/2012
7920758Measurement apparatus and method of measurement of video spatial scale, offset and cropping
A method and apparatus are provided to measure spatial distortion. Measure and remove borders; and rescale the active test image, the active reference image, or both, such that they are the same size. A representative line is obtained, or selected, from each image p...
04/05/2011
7738730Method of image analysis using sparse hough transform
A digital image includes a plurality of pixels arranged in an array. In a method of analyzing the image, some of the pixels are purposefully not processed. In particular, only those pixels in a particular subgroup are processed according to a Hough or similar transf...
06/15/2010
7720307Image matching method, program, and image matching system
An image matching method capable of matching images with a high precision and a program and an image matching system for the same, providing a conversion unit for performing image processing based on a registered image and a match image for converting points in each...
05/18/2010
7680357Method and apparatus for detecting positions of center points of circular patterns
Voting of coordinates of each pixel in a photographic image onto a Hough space corresponding to annuluses is performed, the Hough space being defined by a coordinate system having an X coordinate axis for a circle center point, a Y coordinate axis for a circle cente...
03/16/2010
7539355Data transform method and apparatus
A data transform method comprises a linear transform step of acquiring 16 linear Hadamard transform coefficients by multiplying the 16 pieces of data by an Hadamard transform matrix, an offset step of classifying the 16 linear Hadamard transform coefficients into fo...
05/26/2009
7440636Method and apparatus for image processing
A method of analysing an image comprises performing a Hough transform on points in an image space to an n-dimensional Hough space, selecting points in the Hough space representing features in the image space, and analysing m of the n variables for the selected point...
10/21/2008
7421139Reducing 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. According to the invention transform constants are replaced with approxim...
09/02/2008
7417757Image forming apparatus
An image forming apparatus, which includes a plurality of image forming portions transferring a yellow image, a magenta image, a cyan image, and a black image formed on a plurality of photoconductor drums to a sheet conveyed on a conveying belt, a marking unit formi...
08/26/2008
7406212Method and system for parallel processing of Hough transform computations
In a parallel computation of a Hough transform of an array of input data values, the transform space of the Hough transform is partitioned dynamically or statically into a number of sub-spaces. Each sub-space of the transform is stored in a sub-space of memory locat...
07/29/2008
7403669Land mark, land mark detecting apparatus, land mark detection method and computer program of the same
The present invention provides a land mark detecting apparatus simultaneously used with a land mark comprising plural mark primitives. The land mark detecting apparatus comprises a set of cameras and a land mark detector which includes an image signal interface unit...
07/22/2008
7397970Automatic scene correlation and identification
Computer software for and a method of determining location of a target image within a two-dimensional input image by employing a three-dimensional reference image comprising determining object edge points in the input image; given estimated seeker line-of-sight orie...
07/08/2008
7379610Methods of, and apparatus for, producing code words
Datawords encoded using a first-order Reed-Muller code are decoded using a Fast Hadamard Transform (FHT). Where the dataword is known to comprise a number of unused bits at one end, the soft decisions of the codeword are reordered. Majority polling is then performed...
05/27/2008
7359555Detecting roads in aerial images using feature-based classifiers
A method detects roads in an aerial image of ground topology by determining low-level features, such as intensities and gradients, for each pixel in the aerial image, determining middle-level features, such as an orientation for each pixel from the low-level feature...
04/15/2008
7327888Geometric hashing method for model-based recognition of an object
A method of pattern matching for recognition of objects within an image, uses a model defined by a set of one or more model primitives representative of large scale structures of an archetype. The image is analyzed to derive at least one target primitive representat...
02/05/2008
7305089Picture 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 different from that at which the image of the subject is captured. The reco...
12/04/2007
7304663Image test target for visual determination of digital image resolution
Resolution of an image capture system is measured by imaging a test target having a progression of feature sizes and pitch in respective sub-fields thereof. The image captured by the imaging system is then inspected to determine a sub-field image which does not incl...
12/04/2007
7302109Method and system for image processing for structured light profiling of a part
An image processing method for structured light profiling includes sampling an image of a structured light pattern to obtain an intensity distribution, selecting a number of sets of sampled points from the intensity distribution. Each of the respective sets includes...
11/27/2007
7292330Wafer inspection with a customized reflective optical channel component
A method is described that adjusts the position of a item and sets a tilt angle for each of a plurality of micro-mirrors of a digital micro-mirror device. The setting of the tilt angles is to establish a filter within the optical channel of an inspection tool that i...
11/06/2007
7283231Compressive sampling and signal inference
A transmission mask or cooled aperture is used in spectroscopy to compressively sample an optical signal. The locations of transmissive and opaque elements of the mask are determined by a transmission function. The optical signal transmitted by the mask is detected ...
10/16/2007
7283645Object recognition using binary image quantization and Hough kernels
A system and process for recognizing an object in an input image involving first generating training images depicting the object. A set of prototype edge features is created that collectively represent the edge pixel patterns encountered within a sub-window centered...
10/16/2007
7283664Interactive computer aided analysis of images from sensor combinations
A method of interactively using a computer to select a sensor combination for analyzing images of a scene in order to distinguish between objects or patterns. Two or more images are acquired, each image from a different sensor. One or more regions of interest (ROIs)...
10/16/2007
7283659Apparatus and methods for searching through and analyzing defect images and wafer maps
Disclosed are methods and apparatus for automatically organizing and/or analyzing a plurality of defect images without first providing a predefined set of classified images (herein referred to as a training set). In other words, sorting is not based on a training se...
10/16/2007
7280676Personal identification device and method
The invention aims at providing personal identification in environments where non-contact is required, with high accuracy even though using a finger vein pattern images unclear and susceptible to positional deviations, wherein it has: a means for acquiring finger ve...
10/09/2007
7274831High 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 line, curve or region as a series of line segments. These line segme...
09/25/2007
7266223Personal identification device and method
The invention aims at providing personal identification in environments where non-contact is required, with high accuracy even though using a finger vein pattern images unclear and susceptible to positional deviations, wherein it has: a means for acquiring finger ve...
09/04/2007
7266232Apparatus and method for inspecting pattern
An inspection apparatus (1) has an image pickup part (2) for performing an image pickup of a substrate (9), an operation part (4) to which an image signal is inputted from said image pickup part (2) and a computer (5), and t...
09/04/2007
7260249Rules-based approach for processing medical images
A technique flexibly applies pre-programmed rules that specify the manner in which medical image data is to be classified or otherwise processed. A rules-based system selects from the pre-programmed rules, with different rules being used based on different doctors' ...
08/21/2007
7203361Adaptive digitizer for optical reader
An optical reader is provided that can include an image sensor. The optical reader can generate an array of miltibit pixel values. The array of multibit pixel values can be processed. In one embodiment, the image sensor can be provided by a 1D image sensor. In one e...
04/10/2007
7200282Implementation of Hough transform and its application in line detection and video motion analysis
An implementation of Hough transform is described. According to one aspect, the Hough transform is used for line detection in an image based on a one-dimensional voting array. ...
04/03/2007
7155043User interface having analysis status indicators
A memory is provided for storing a plurality of data sets, each data set corresponding to an image of a location within a medical body of interest. Each image contains a number of features which correspond to data points that have been collected when creating an ima...
12/26/2006
7151601Apparatus and methods relating to wavelength conditioning of illumination
Lighting systems comprising a spectrum former upstream from a reflective pixelated spatial light modulator (reflective SLM), the SLM reflecting substantially all of the light in the spectrum into at least two different light paths, that do not reflect back to the li...
12/19/2006
7136509Implementation of Hough transform and its application in video motion analysis
An implementation of Hough transform is described. According to one aspect, the Hough transform is used to perform motion analysis of patterns in a video using one-dimensional detectors and a one-dimensional voting array. ...
11/14/2006
7119941Input 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
7119924Detection and segmentation of sweeps in color graphics images
A process for color graphics image processing, related to detection and segmentation of sweeps, is provided. An input graphics image is transformed into a three-dimensional histogram in an appropriate color space 104 (e.g., CIELUV). Two-dimensional histograms...
10/10/2006
7110568Segmentation of a postal object digital image by Hough transform
In order to segment a digital image of a postal packet in order to read a postal address (AP) automatically on said packet, the method consists: in subdividing (20) the image into image blocks of identical size; in applying (30) processing based on a H...
09/19/2006
7092550Implementation of hough transform and its application in video motion analysis
An implementation of Hough transform is described. According to one aspect, the Hough transform is used to perform motion analysis of patterns in a video using two-dimensional primary data items and a two-dimensional voting array. ...
08/15/2006
7085432Edge detection using Hough transformation
A method identifies edges of an object in an image by analyzing an accumulator array produced via a Hough transformation of the image. The method includes the step of identifying a first cell in a first row of the array associated with a first edge of the object. Th...
08/01/2006
7065262Fast high-accuracy multi-dimensional pattern inspection
A method and apparatus are provided for identifying differences between a stored pattern and a matching image subset, where variations in pattern position, orientation, and size do not give rise to false differences. The invention is also a system for analyzing an o...
06/20/2006
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