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6556692 |
Image-processing method and apparatus for recognizing objects in traffic
An image-processing method, and an apparatus for carrying out the method, that is used particularly for detecting and recognizing objects in traffic. Locally-softened feature images of an image...
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6553136 |
System and method for counterfeit protection
A system and a method for preventing counterfeiting activities utilize an image detection scheme that uses only a few portions of restricted-document images, i.e., templates, to determine whether...
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6549683 |
Method and apparatus for evaluating a scale factor and a rotation angle in image processing
The present invention concerns a method for evaluating a scale factor and a rotation angle in image processing and more particularly digital image processing. The method includes the steps of first...
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6546134 |
System for assessment of fine motor control in humans
A biometric machine method for instantaneous assessment of the fine motor control of a human individual through analysis of that individual's handwriting dynamics in which the dynamic data...
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6546150 |
Analogue signal processing circuit
An object of the invention is to enable not only to select an ODD signal and an EVEN signal on the same timing but also to set up a duty ratio of the ODD-signal component to the EVEN signal...
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6542619 |
Method for analyzing video
A method and system for recognizing scene changes in digitized video is based on using one-dimensional projections from the recorded video. Wavelet transformation is applied on each projection to...
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6519372 |
Normalized crosscorrelation of complex gradients for image autoregistration
A system and method that computes the degree of translational offset between corresponding blocks extracted from images acquired by two sensors, such as electro-optic, infrared sensors, and radar...
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6483949 |
Image processing apparatus and method, and medium therefor
In order to measure a distance with high accuracy, a corresponding pixel extraction section reads a projection transformation matrix from a storage section, determines a reference pixel...
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6389169 |
Intelligent systems and methods for processing image data based upon anticipated regions of visual interest
Systems and methods for performing intelligent image processing. Image processing systems and methods in accordance with the present invention may select algorithms for processing collections of...
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6385340 |
Vector correlation system for automatically locating patterns in an image
The present invention relates to a combined approach of image and template correlation, and vector correlation wherein edge detection and pattern searching are joined in a single operation to...
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6373994 |
Low latency correlation
The architecture of the inventive correlator is, in a preferred embodiment, an array of correlation cells each containing a delay pipe, a math unit and an accumulator. An array of these correlation...
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6345127 |
Video data compression preprocessor using holographic optical correlation and feedback
A method and apparatus for compressing video data images uses optical processing techniques. The method and apparatus perform holographic optical correlation and apply holographic optical...
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6343150 |
Detection of image correspondence using radial cumulative similarity
A given point of interest in an image is defined by two properties, a local attribute, such as color, and a neighborhood function that describes a similarity pattern. The color value is not...
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6330361 |
Adaptively aligned optical correlator and method
An improved optical correlator using a coherent light beam employs a method of adaptive alignment. A test pattern modulates an input spatial light modulator. The modulated beam propagates through...
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6327394 |
Apparatus and method for deriving temporal delays in integrated circuits
A method for processing time-resolved optical emission data ("waveforms") comprises processing both a first and a second waveform, and analyzing the results. The processing uses a substantial...
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6310963 |
Method and apparatus for detecting an EAS (electronic article surveillance) marker using wavelet transform signal processing
Wavelet transform processing is performed on an input signal received at a receiver circuit of an electronic article surveillance (EAS) system. The input signal includes a target signal generated...
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6307959 |
Method and apparatus for estimating scene structure and ego-motion from multiple images of a scene using correlation
A system that estimates both the ego-motion of a camera through a scene and the structure of the scene by analyzing a batch of images of the scene obtained by the camera employs a...
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6301388 |
Image matching apparatus
To provide an image matching apparatus that realizes a new method for comparing two images which differ in sizes and orientations. In an image recognition system, for each of two plane images on...
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6301387 |
Template matching using correlative auto-predictive search
A template is analyzed to determine a step size for searching within a search area. First, the template is padded with pixels to increase its size. Cross-correlation between the padded template and...
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6298171 |
System for reading data glyphs
A high speed system for locating and decoding glyphs on documents is disclosed. The system includes acquiring one or more images of a document containing a glyph. One-dimensional projections of the...
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6298170 |
Image tracking apparatus for tracking an image within a local region to continuously track a moving object
A local region image tracking apparatus continuously tracks an arbitrary local region within a search image which is described by search image data by comparing the search image data and reference...
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6292586 |
Arithmetic unit, correlation arithmetic unit and dynamic image compression apparatus
In a correlation arithmetic system adapted to detect a relative difference between two functions, an operation is simplified. This makes it possible to perform the operation with a small scale of...
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6275612 |
Character data input apparatus and method thereof
When a user points a hot spot 322-i, a selection frame 38 is displayed in correlation to input frames 320-i (hot spot 322-i). The selection frame 38 includes within a same window a list of...
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6263086 |
Automatic detection and retrieval of embedded invisible digital watermarks from halftone images
A system for automatic detection and retrieval of embedded invisible digital watermarks retrieves digital watermarks from halftone images. Specifically, by supplying an image to the system, through...
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6256419 |
Method and apparatus for detecting a point of change in a moving image
A system for detecting a point of change between video shots from a video having a plurality of succeeding frames. The system includes video playback apparatus for playing a video chronologically...
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6243494 |
Template matching in 3 dimensions using correlative auto-predictive search
A template is analyzed to determine step sizes for searching within a search area. The template is analyzed by first padding the template with data points to increase its size. Cross-correlation...
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6219462 |
Method and apparatus for performing global image alignment using any local match measure
A method for performing parametric image alignment, which when given any local match-measure, applies global estimation directly to the local match-measure data, without first going through an...
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6219458 |
Overlapped reversible transforms for unified lossless/lossy compression
Recently, a number of reversible wavelet transforms have been identified which allow for exact reconstruction in integer arithmetic. Different transforms vary in how rounding is performed. The...
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6194695 |
Photoreceptor array for linear optical flow measurement
This invention is a one-dimensional optic flow sensor that operates in a small region of the two-dimensional visual field. The heart of the sensor is an linear array of photoreceptors that...
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6195460 |
Pattern extraction apparatus
Collation Fourier image data (FIG. 1D) FB generated by performing the two-dimensional discrete Fourier transform (DFT) for the image data (FIG. 1C) of a collation pattern is synthesized with...
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6178271 |
Methods and systems for registering image data
Methods and systems for estimating a correction angle that rotationally aligns a first polar centered image with a second polar centered image, wherein the first and second polar centered images...
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6175652 |
Machine vision system for analyzing features based on multiple object images
Provided is the ability to produce an orthogonal-view representation of a selected feature plane of a three-dimensional object. A plurality of images of the object are acquired, each corresponding...
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6163403 |
High output reflective optical correlator having a folded optical axis using grayscale spatial light modulators
An optical correlator system having a plurality of both active and passive reflective optical components between a source of electromagnetic radiation, such a visible coherent light, and an output...
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6160656 |
Method and apparatus for optical correlation recognition by time-integrated nonlinear detection
Methods and apparatus are provided for the recognition of an optical signal that is encoded with a specified temporal pattern. Nonlinear optical interactions and time-integrating optical detectors...
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6154577 |
Digital image processing method and computer program product
A digital image processing method for detecting when and where an image has been altered or modified includes the steps of generating an edge map of an original digital image; convolving the edge...
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6144759 |
Method of determining the transformation between an object and its three-dimensional representation, and device for carrying out the method
The invention relates to a method of determining the spatial transformation between an object which is three-dimensionally reproduced by a data set and the object itself. According to the method at...
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6141439 |
Apparatus for image measurement
An apparatus for image measurement comprises a data setting portion for taking up one of a pair of stereoscopic images as a reference image and the other as a searched image and establishing a...
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6115505 |
Area detection apparatus
There is disclosed an area detection apparatus in which a reference image having a predetermined pattern is prepared beforehand, and an area having the same pattern as the reference image is...
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6108435 |
Method of detecting phase difference between a pair of images
A method of detecting a phase difference between a pair of images of an object which are formed on a pair of optical sensor arrays through different optical paths, with presence of flare in one of...
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6108458 |
Sparse array image correlation
A method of image correlation includes providing one or more image arrays of pixel values wherein each pixel value is associated with one of a number of pixels. Pixel values in the image array...
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6104828 |
Ophthalmologic image processor
A medical image processor according to the present invention is used for analyzing eye fundus images 28 and 29, and comprises an image monitor capable of almost simultaneously displaying two...
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6094499 |
Pattern collation apparatus
A pattern collation apparatus is designed to identify a registration pattern and a collation pattern as identical patterns or not even with a rotation offset between the registration pattern and...
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6094509 |
Method and apparatus for decoding two-dimensional symbols in the spatial domain
A method and system for decoding a two-dimensional optical symbol in the spatial domain. The system determines the orientation of an imaged symbol in the spatial domain by using a template to...
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6088488 |
Vascular imaging with adaptive averaging
A reference image R is selected and a region of interest (ROI) is interactively selected encompassing a desired structure from a sequence of images of a moving structure. This ROI is...
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6088483 |
Image processing method for system employing pattern matching
Provided are an image processing method employing pattern matching, whereby the number of calculations for a normalized correlation factor can be reduced and processing speed can be increased in a...
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6076004 |
Magnetic resonance image correction method and magnetic resonance imaging apparatus using the same
Cross-correlation between a first magnetic resonance image as a reference image and a second magnetic resonance image to be adjusted relative to the first magnetic resonance image is taken,...
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6070095 |
Method for reducing translational motion artifacts in MR imaging
A method is provided for correcting for effects of translational motion or movement of an object in MR imaging. In accordance with the method, an MR point source is joined to the object for...
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6067367 |
Moving direction measuring device and tracking apparatus
A moving direction measuring device includes a collation Fourier pattern data generating section, a registration Fourier pattern data generating section, a pattern processing section, and a moving...
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6064768 |
Multiscale feature detector using filter banks
A detector system locates a feature in an input signal. The input signal is applied to a multiscale filter bank which produces a corresponding set of filtered signals that are applied to a...
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6052474 |
Method and apparatus for collating images
The present invention provides a method of collating images and an apparatus for collating images capable of collating an image for collation taken in as digital data with an image for reference...
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