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6526161 |
System and method for biometrics-based facial feature extraction
A method and image processing system are disclosed that extract facial feature information from an image using biometrics information of a face. Regions of interests such as a face, eyes, nose and...
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6525741 |
Chroma key of antialiased images
A method of combining a foreground image and a background image includes scaling up a pixel of interest, which is positioned along an edge between a subject and a key colored backing, into a...
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6498660 |
System and method for the dynamic thresholding of grayscale image data
A method for the conversion of grayscale images with a non-white background into halftone images is disclosed. The illustrated embodiment of the present invention addresses the difficulties current...
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6493469 |
Dual video camera system for scanning hardcopy documents
A face-up document scanning apparatus stitches views from multiple video cameras together to form a composite image. The document scanning apparatus includes an image acquisition system and a frame...
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6493620 |
Motor vehicle occupant detection system employing ellipse shape models and bayesian classification
A object on a seat of a motor vehicle is classified by creating a video image of the area and forming a silhouette of the object. The silhouette is divided into two segments and a separate ellipse...
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6493458 |
Local positioning apparatus, and method therefor
An apparatus and method for correctly determining the position of a vehicle in a traffic lane by obtaining correct information about the position of the traffic lane without being affected by...
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6493465 |
Matching point extracting method and apparatus therefor
This invention provides a matching point extracting method and an apparatus therefor, for extracting the matching points among plural images based on the template matching method. The method...
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6487313 |
Problem area location in an image signal
In a method of locating problem areas in an image signal (I), a motion vector field (Df) is estimated for the image signal (I), and edges are detected in the motion vector field (Df). In a...
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6487307 |
System and method of optically inspecting structures on an object
A system and method of optically inspecting a structure on a surface of a production object which is supported on a moving inspection platform. The method reliably traces structure edges and stores...
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6483943 |
Feature value extraction methods and apparatus for image recognition and storage medium for storing image analysis program
One or more contours of a picture element (PEL) array pattern are detected and, then, a strength of concavity/convexity on each contour (acuteness) and a direction of concavity/convexity are...
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6480302 |
Image processing apparatus and image processing method
The image processing apparatus is arranged by an object tag adding unit 11 for producing an object tag indicative of a sort of an object and a region, which are contained in an input image...
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6473525 |
Method for detecting an image edge within a dithered image
A method for detecting an image edge within a dithered image. A pixel within a support region is selected for processing. The differences between pixel values in the region and the selected pixel...
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6470095 |
Automatic extraction of text regions and region borders for an electronic work surface
The spatial separations between clusters of objects on the electronic work surface are analyzed to automatically generate borders, which may be used in at least two manners. The borders may become...
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6466695 |
Procedure for automatic analysis of images and image sequences based on two-dimensional shape primitives
The invention provides an apparatus, and related method, for providing a procedure to analyze images based on two-dimensional shape primitives. In the procedure, an object representation is created...
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6456325 |
Image signal processing device for minimizing false signals at color boundaries
An image signal processing device of the present invention includes an RGB-YC conversion for converting color component signals output from a CCD (Charge Coupled Device) image sensor to luminance...
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6453076 |
Edge enhancement circuit
Disclosed herein is an edge enhancement circuit which is capable of reducing required memory capacity and power consumption. An input analog video signal HVa is sampled based on a clock signal CLK...
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6449391 |
Image segmentation method with enhanced noise elimination function
Segmentation of a character-containing image, made by placing a dark mark against a light background, is accomplished by establishing a vertical pixel projection for each pixel column in the image....
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6445819 |
Image processing method, image processing device, and recording medium
An image processing method, image processing device and recording medium are provided in which the effects of erroneous extraction of a region assumed to correspond to a main portion within an...
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6434257 |
Size recognition system with method for determining price of a commodity
The present system and apparatus use image processing to recognize object size with a scene. The system includes novel image processing apparatus and method to segment one or more object images...
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6434271 |
Technique for locating objects within an image
A technique for locating objects within an image is disclosed. In one embodiment, the technique is realized by obtaining an image and then identifying an object within the image based upon an...
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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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6421469 |
Image data manipulation for improved image visualization and analysis
Digital image data is manipulated for improved image visualization and analysis. A two-dimensional image includes relevant subject matter and a substantially homogeneous background that at least...
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6408105 |
Method for detecting slope of image data utilizing hough-transform
Image data is edge-processed and then digitized. This image data is Hough-transformed to generate a parameter plane in which multiple Hough-curves are plotted in a parameter space, from which...
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6408109 |
Apparatus and method for detecting and sub-pixel location of edges in a digital image
The invention provides a fast, computationally inexpensive, and highly accurate method and apparatus for edge detection in a digital image, even for edges that are not substantially parallel to the...
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6404921 |
Contour extracting method and apparatus
In a contour extraction apparatus and method, states of target pixels and pixels adjacent to the respective target pixels in image data are stored, the target pixel is extracted in the sequence of...
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6404922 |
Curve length measuring device and measuring method therefore and storage medium which stores control program for measuring length of curve
A curve length measuring device which processes image data obtained by the photographing of an object to be measured to measure a length of an arbitrary curve on a surface of the object to be...
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6404936 |
Subject image extraction method and apparatus
There is disclosed a method of extracting the region of a subject image from an input image including the subject image. A subject region mask for masking the region of the subject image is...
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6400846 |
Method for ordering image spaces to search for object surfaces
A method determines a surface of an object in a sequence of images. The method begins by estimating a boundary of the object in each image of the sequence using motion information of adjacent...
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6400848 |
Method for modifying the perspective of a digital image
A method for modifying an apparent perspective of a digital image representing a perspective projection of a scene, the method comprises the steps of locating a line in the digital image; computing...
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6400844 |
Method and apparatus for segmenting data to create mixed raster content planes
An improved technique for compressing a color or gray scale pixel map representing a document using an MRC format includes a method of segmenting an original pixel map into two planes, and then...
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6400830 |
Technique for tracking objects through a series of images
A technique for tracking objects through a series of images is disclosed. In one embodiment, the technique is realized by obtaining at least first and second representations of a plurality of...
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6396947 |
Placing tags on surface string sequences representing a raster image
An apparatus is disclosed for converting a raster image comprising a plurality of pixels into a plurality of data tags representing at least one shape in the raster image. The apparatus comprises a...
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6393146 |
Defining non-axial line surfaces in border string sequences representing a raster image
An apparatus is disclosed for defining non-axial line surfaces in border string sequences representing a raster image. The apparatus comprises a computer program, or an integrated circuit...
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6392759 |
Edge-enhancement processing apparatus and method, and medium containing edge-enhancement processing program
An edge-enhancement processing apparatus which removes problems of the conventional edge enhancement processing, which requires checking by an operator's visual observation or a high-frequency band...
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6389167 |
Multi-level pixel density reduction for printers
A method of reducing pixel density in pixel array printers, alternatively termed depletion, uses information about a pixel when it is first available instead of having to recalculate that...
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6381366 |
Machine vision methods and system for boundary point-based comparison of patterns and images
The invention provides boundary-based machine vision methods and systems for comparing a pattern to an image. These contemplate the steps of finding boundary points in the image and comparing those...
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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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6371018 |
Method and apparatus for anilox roller scoring prevention
The present invention is directed to various apparatuses and methods for prevention of anilox roller scoring and compensation for anilox scoring ink marks, focusing on the anilox roller. According...
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6370279 |
Block-based image processing method and apparatus therefor
A block-based image processing method and an apparatus therefor, in which blocking artifacts caused by a block-based image processing can be removed by using spatial adaptive filtering based on...
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6366699 |
Scheme for extractions and recognitions of telop characters from video data
A scheme for detecting telop character displaying frames in video image which is capable of suppressing erroneous detection of frames without telop characters due to instability of image features...
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6356655 |
Apparatus and method of bitmap image processing, storage medium storing an image processing program
An object is to enable designation of character frames and recognition of characters even where a document does not have any page mark or reference mark nor does a scanner have a function for...
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6356656 |
Contour-information extraction apparatus and method
A contour-information extraction system which includes performing raster scanning of a document, detemining a position of an interpixel grid of image data in the document, detecting contour vectors...
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6345124 |
Image conversion based on edges
An image processing method for processing a grayscale image, by which grayscale images of color or monochrome photographs characters and so on are processed by being converted into digital signals,...
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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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6320984 |
Method of and apparatus for extracting contour line and workstation having contour line extracting function
Contour line data is easily extracted from line drawing data (binary image data). Run data representative of a line drawing compressed according to run-length coding is read line by line, and run...
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6310964 |
Produce size recognition system
The present system and apparatus uses image processing to recognize object size within a scene. The system includes novel image processing apparatus and methods to segment one or more object images...
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6307964 |
Method for ordering image spaces to represent object shapes
A method represents a shape of an object in an image. Portions of the image interior to a boundary of the object are ordered. A medial axis for the ordered portions of the image is derived. The...
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6304672 |
Edge detecting method and edge detecting device which detects edges for each individual primary color and employs individual color weighting coefficients
An edge detecting method and an edge detecting device improve the accuracy in edge detection and extract the outline correctly even in the general image. In the case of detecting the picture...
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6298157 |
Locating and aligning embedded images
Apparatus and methods useful to automate the task of locating a photograph or other image that is embedded within a larger image. An edge curve is found that approximates the perimeter of the...
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6298156 |
Image processing apparatus and method
An edge vector extraction unit (122) extracts edge vectors from an input image, and a variable-magnification processing unit (123) performs smoothing/variable-magnification processing of the edge...
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