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6445834 |
Modular image query system
An image query and storage apparatus and method including a plurality of dynamically linkable feature modules is disclosed. Each of the plurality of feature modules extract a different set of...
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6438265 |
Method of binarization in an optical character recognition system
A method of binarization used in an OCR system involves in determining text pixels by checking, for each pixel, that the difference between its value and the values of a plurality of pixels located...
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6429875 |
Processing image data
Image frames are stored as a plurality of pixel values. An image frame is viewed in which a perceived object ( 301 ) is to be distinguished from the remainder of the image frame. Input signals...
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6430315 |
Image processing method including a chaining step, and medical imaging apparatus including means for carrying out this method
An image processing method which includes the acquisition ( 10 ) of an intensity image (J) formed by a matrix of points (A) having non-binary intensity values and representing filiform objects, and...
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6427024 |
APPARATUS FOR AND METHOD OF AUTOMATIC OPTICAL INSPECTION OF ELECTRONIC CIRCUIT BOARDS, WAFERS AND THE LIKE FOR DEFECTS, USING SKELETAL REFERENCE INSPECTION AND SEPARATELY PROGRAMMABLE ALIGNMENT TOLERANCE AND DETECTION PARAMETERS
A novel wafer or circuit board automatic scanning optical inspection system and technique using the reference comparison principle for finding defects in scanned sample images, that enables a new...
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6405203 |
Method and program product for preventing unauthorized users from using the content of an electronic storage medium
A system, method, and article of manufacture is provided for tracking the distribution of content electronically. First, an electronic storage medium tracking identifier is incorporated onto an...
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6404908 |
Method and system for fast detection of lines in medical images
A method an apparatus for detecting lines in medical images is disclosed, wherein a direction image array and a line image array are formed by filtering a digital image with a single-peaked filter,...
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6377711 |
Methods and systems for detecting the edges of objects in raster images using diagonal edge detection
Trapping methods and systems for raster images along horizontal, vertical or diagonal directions uses edge detection for detecting edges between pixels and only diagonally neighboring pixels.
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6369911 |
Apparatus for generating pulse-width data for toner-transfer-type printing apparatus
To convert gray-scale data of each pixel of image data into pulse-width data for each pixel, a RAM is provided. The RAM has nine pixel memory regions corresponding to nine pixels a to i for...
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6351571 |
Uniform convolution algorithm for frequency decomposition of image regions
A method of analyzing the low- and high-frequency components of a digital image comprising the steps of: providing a rectangular digital image; specifying the size of a rectangular kernel;...
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6347152 |
Multiresolutional critical point filter and image matching using the invention
A multiresolutional filter called a critical point filter is introduced. This filter extracts a maximum, a minimum, and two types of saddle points of pixel intensity for every 2×2...
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6341182 |
Method and apparatus for analyzing an image
A method of analysing an image to obtain an image value. The image comprises a defined array of pixel values. The method comprises (1) determining the highest pixel value in the image; (2)...
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6337925 |
Method for determining a border in a complex scene with applications to image masking
A method is used for identifying a border in a digital image that is defined by a plurality of pixels, each pixel being defined by a pixel color and a pixel position indicating a location of the...
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6332038 |
Image processing device
The present image processing device includes an image obtaining device which obtains an electronic image (still image) or a series of electronic images (moving image), an image extraction...
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6332044 |
System and method for enhancement of image contour fidelity
The present invention is a method and apparatus for performing filtering operations on a digital image. One embodiment is enhancement of the contour fidelity of the image represented by a plurality...
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6317509 |
Computed tomography apparatus and method for classifying objects
A method and apparatus detects sheet explosives in computed tomography (CT) data. In particular, sheet-shaped objects such as sheet explosives can be discriminated from other object shapes and...
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6304678 |
Image artifact reduction using maximum likelihood parameter estimation
A technique for post-processing decoded compressed images to reduce decoding-related artifacts employs a maximum likelihood estimation of an original image f. The decoded image is modeled as a...
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6295382 |
Method and apparatus for establishing an adaptive noise reduction filter
A method and apparatus for adaptive noise filtering within a video graphics circuit includes determining an average intensity for a kernel of a display area. The kernel includes a plurality of...
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6289126 |
Method and apparatus for determining the boundary of an object
The boundary of an object is determined based on its optically captured image by: (a) converting a density data of each of a plurality of pixels forming the captured image into a binary signal; (b)...
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6282328 |
Machine vision systems and methods for morphological transformation of an image with non-uniform offsets
The invention provides machine vision systems and methods for morphological transformation of a source image, e.g., with non-uniform offsets. According to these, pixels from selected...
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6275613 |
Method for locating a model in an image
A method and system for recognizing an object in an image. A model of the sought object is transformed according to a set of preselected transformations to produce a set of transformed models, each...
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6266054 |
Automated removal of narrow, elongated distortions from a digital image
An apparatus including a method of digital image processing which allows a user to remove narrow, elongated areas of image distortion from a digitized image. According to the method, the user...
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6266156 |
Area judging apparatus
The read out image data is stored in the mask memory in a predetermined mask unit, and binarized into binary value with a predetermined threshold in the binarizing circuit. The binarized image data...
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6259814 |
Image recognition through localized interpretation
A printed or handwritten character image is recognized by training (301) a plurality of lookup tables with a set of known referent characters; obtaining (302) a bitmap of a character image to be...
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6240217 |
Digital image processing
A method of processing digital image information, including pixel intensity information, includes the steps of identifying a region of the image in which pixel intensities are similar to each...
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6233364 |
Method and system for detecting and tagging dust and scratches in a digital image
A system for identifying and tagging anomalies, such as images of dust and scratches, in a digital image so that they can be removed from the image. The invention implements a technique for...
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6233369 |
Morphology processing apparatus and method
The present invention provides a novel system and method that permits a "mask" to be directly incorporated into an image during image processing. This is accomplished by processing binary images or...
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6226050 |
Signal adaptive filtering method for reducing ringing noise and signal adaptive filter
A gradient is calculated at each pixel of the image data to be filtered using a one-dimensional horizontal gradient operator of 1×2 size and a one-dimensional vertical gradient operator of 2×1...
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6222935 |
Pattern inspecting method and pattern inspecting device
A pattern inspection method capable of providing an improved inspection reliability includes the following steps. A pattern classification is set every pixel-value range of a reference-image data...
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6219466 |
Apparatus for implementing pixel data propagation using a linear processor array
An image processing apparatus is provided with a linear processor array which includes a plurality of linearly coupled processing elements. The apparatus further includes a plurality of local...
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6201613 |
Automatic image enhancement of halftone and continuous tone images
Automatic image enhancement of halftone images is performed by subjecting the halftone image to a low-pass filter so as to smooth out halftone variations between adjacent pixels prior to performing...
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6195467 |
Method and apparatus for sharpening a grayscale image
A digitized image is treated by an electronic system where pairs of pixels within a convolution window are compared, and for those differences which are greater than a preselected, or automatically...
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6167164 |
One-dimensional signal adaptive filter for reducing blocking effect and filtering method
A one-dimensional signal adaptive filtering method and a one-dimensional signal adaptive filter. The one-dimensional signal adaptive filtering method capable of reducing a blocking effect of image...
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6163624 |
Image processing circuit
An image processing circuit of the present invention includes a succession calculating circuit. In the succession calculating circuit, an average value calculating circuit determines an average...
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6160913 |
Method and apparatus for digital halftone dots detection and removal in business documents
An image processing method for detection and removal of halftone dots includes converting a gray scale image into a binary thresholded image with halftone dots; identifying halftone regions within...
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6141460 |
Method for detecting edges in an image signal
An edge detection method employs binary morphological erosion. A binary image is generated from the gray-scale-value input image. A structure element is guided in a step-by-step manner across the...
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6134352 |
Spatial error concealment for image processing
An approach to synthesizing missing pixels in video images. The invention synthesizes an outermost ring of pixels within a block of missing pixels, based on adjacent, known, pixels. Then, the...
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6111974 |
Apparatus and method for detecting sheet objects in computed tomography data
A method and apparatus for detecting objects in computed tomography (CT) data, including sheet-shaped objects such as sheet explosives can be detected by analyzing a neighborhood of voxels...
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6111975 |
Minimum difference processor
A process for reducing background clutter of a scene, and isolating an object of interest. The process includes calculating a minimum output from a plurality of appropriately configured anti-median...
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6104839 |
Method and apparatus for correcting pixel values in a digital image
A method and apparatus for editing continuous tone digital images representing pixels in which regions containing defects, called "defect regions", are unnoticeable or less visually discernible....
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6081625 |
Image processing apparatus and method
In the image processing apparatus of the present invention, the dot pattern analysis section determines a plurality of black pixels neighboring a notice pixel of a predetermined positioned black...
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6078683 |
Method and system for recognition of currency by denomination
A denomination recognition apparatus and method uses a programmed microelectronic CPU (14) to execute program instructions (19) stored in PROM (18) to read in pixel data from an optical imaging...
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6075871 |
Apparatus and method for eroding objects in computed tomography data
A method and apparatus for detecting objects in computed tomography (CT) data, including sheet-shaped objects such as sheet explosives, analyze a neighborhood of voxels surrounding a test voxel....
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6067366 |
Apparatus and method for detecting objects in computed tomography data using erosion and dilation of objects
A method and apparatus for detecting objects in computed tomography (CT) data are disclosed. Erosion of the data can be performed by identifying a neighborhood of voxels surrounding a voxel of...
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6052484 |
Image-region discriminating method and image-processing apparatus
A degree of frequency and a comparison difference value are used as an amount of feature that is to be inputted to a discrimination circuit so as to discriminate the kind of regions. The degree of...
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6052489 |
Image output apparatus and method
In the image output apparatus of the present invention, a window forming section extracts a window including a notice pixel from bit map data of the image. A contour extraction section extracts...
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6049635 |
Dotted image area detecting apparatus and dotted image area detecting method
An apparatus for and a method of reliably detecting a very small dotted image area. A detecting area including a predetermined number of pixels including a target pixel is set. It is judged whether...
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6047090 |
Method and device for automatic segmentation of a digital image using a plurality of morphological opening operation
A method of processing a digital image representing ribbon-shaped objects of non-uniform intensity contrasting with a background of lower intensity includes an automatic segmentation phase having...
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6040853 |
Process for detecting surface defects on a textured surface
A process for detecting defects in a textured suface, particularly on a highway. The process consists in displacing with respect to the surface a camera presenting an inclination and in processing...
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6014471 |
Apparatus and method for retouching a digital representation of a color image
Apparatus and a method for semi-automatic retouching of digital images is provided. The method includes the steps of processing the digital image to obtain a list of candidate defect segments,...
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