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6748257 |
Detection of ribcage boundary from digital chest image
To prevent erroneous detection of a ribcage boundary from a chest image, an outer search limit point is decided with precision. A profile of smoothed pixel-value integrated averages in each of...
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6748112 |
Method and apparatus for finding shape deformations in objects having smooth surfaces
The present invention is directed to an imaging apparatus for examining an object having smooth surfaces to determine shape deformations in the surface of object. The imaging apparatus includes an...
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6744532 |
Method for enhancing printing quality
A method for enhancing printing quality to process the picture and textual data in an image properly such that both the picture and textual data can be clearly printed. The inventive method can...
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6741755 |
System and method providing mixture-based determination of opacity
A system is provided for selecting a foreground region of an image, given a set of pixels defining the boundary of the foreground region of the image. The system includes a component to dilate the...
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6741751 |
Logic based tagging for hyperacuity rendering of an input image with a 5×5 context
A primary pixel of interest within an image is processed by receiving colors, defining a plurality of pixels in a primary sub-neighborhood of pixels included within a neighborhood of pixels, into a...
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6738503 |
Notch inspection apparatus and method based on shading pattern matching
A notch inspection method based on shading pattern matching for inspecting notches on semiconductor packages or like objects. A template is created to characteristically express brightness...
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6731823 |
Method for enhancing the edge contrast of a digital image independently from the texture
A method is described for enhancing a digital image channel, particularly where the digital image channel is split into pedestal and texture signals that substantially comprise the digital image...
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6728427 |
Method of extracting temporal and spatial combination markers for morphological image division
The present invention provides the method of extracting temporal and spatial combination markers including the steps of: (1) simplifying inputted current image frames, quantizing the simplified...
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6725779 |
Multi-level printing process reducing aliasing in graphics
A multi-level printing process using a printer by converting electronic page data to multi-level bitmap data with a specific number of gradation levels Nlev at a specified spatial resolution higher...
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6728399 |
Method and apparatus for defining color borders in a raster image by identifying and breaking contrast ties
A method and apparatus is disclosed for converting raster images into a vector format by identifying and converting the borders of image features into a mathematical format referred to as string...
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6724946 |
Image processing method, apparatus and storage medium therefor
Disclosed are an image processing method, apparatus and storage medium for forming a mosaic image by combining a plurality of material images. The method includes dividing an image, which is the...
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6724938 |
Boundary line detecting method and apparatus, image processing method and apparatus, non-boundary line detecting method and apparatus
To detect a boundary line between different objects in contact which appear to be the same object as their structural consistencies are identical or substantially identical, there are provided a...
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6724942 |
Image processing method and system
An original image signal made up of a plurality of image signal components each representing a pixel of an original image is processed to suppress the granularity of the original image and enhance...
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6714688 |
Method and apparatus for enhancing the edge contrast of an interpolated digital image
A method for enhancing a digital image channel, the method comprising the following steps: (a) providing a digital image channel having image pixels; (b) providing interpolation parameter values;...
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6707943 |
Method of monitoring the quality of distributed digital images by detecting false contours
A method and device for monitoring the quality of distributed digital images coded by blocks of pixels in which a false contour phenomenon may be generated when the image is reproduced. An image...
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6704456 |
Automatic image segmentation in the presence of severe background bleeding
A method and apparatus for processing a digital image using an imaging input device so as to reduce bleeding of the edges of the detected images comprising receiving a digitized image including at...
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6704451 |
Method and arrangement for objective assessment of video quality
A method of and an arrangement for obtaining quality indicators for an objective assessment of a degraded or output video signal with respect to a reference or input video signal. The strength of...
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6700626 |
Video-apparatus with peaking filter
A video-apparatus includes a peaking filter ( 3 - 5 ), which, in response to applied video signals, supplies peaking signals (Vp) that are combined with the applied video signals. The peaking...
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6697497 |
Boundary identification and characterization through density differencing
Methods and systems are provided for identifying and characterizing boundaries in digital images and other digital data sets. At least two points within a digital image are selected. Clusters of...
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6697535 |
Method for refining a parameter of a contour in an image
Methods and apparatuses are disclosed for refining groupings of edge points that represent contours in an image. The methods and apparatuses decrease data dispersion and data quantization effects....
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6697107 |
Smoothing a digital color image using luminance values
A method for smoothing a digital color image having color pixels in which each colored pixel is expressed as one luminance and two chrominance color values, including computing parameters for at...
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6697534 |
Method and apparatus for adaptively sharpening local image content of an image
Briefly, in accordance with one embodiment of the invention, a method of sharpening an image includes the following. A crispening parameter is adaptively computed for a local region of a captured...
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6693669 |
Method for reducing image blurring
A method for reducing blurring associated with objects forming part of a grey scale image. The method includes receiving ( 11 ) a set of image pixels and then calculating ( 12 ) a gradient value...
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6694057 |
Method and apparatus for processing images with curves
A system according to the invention identifies image data points defining a curve. The method comprises the steps of determining a start point and an end point for the curve, establishing a search...
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6690838 |
Image processing circuit and method for reducing a difference between pixel values across an image boundary
An image processing circuit includes a processor that receives at least a portion of an image including a boundary and first and second contiguous pixels disposed on opposite sides of the boundary,...
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6690429 |
Device and method for processing color signal
A device and method for processing a color signal which can improve the sharpness of a color signal is disclosed. In the present invention, an edge of an image is detected and the detected edge is...
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6687300 |
Motion detection circuit and a noise suppressing circuit including the same
In a motion detection circuit, a difference signal between the video and one-frame delayed video signals is generated Edge signals are generated from the video and delayed video signals. Motion in...
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6681047 |
Method and system for determining character edges based upon edges pair and image characteristics of pixels between the edge pair
The current edge pair determination system and method determine whether or not an edge pair and certain image characteristics of pixels between the edge pair as a whole or a unit is a part of a...
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6677994 |
Image processing apparatus method of the same and camera apparatus
An image processing apparatus having a compensation value calculating unit, wherein an XOR element compares the signs of a difference A with a difference r and output the difference A as a...
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6670999 |
Contour emphasizing circuit and method thereof
A contour emphasizing circuit and a contour emphasizing method, in which an image having sharpness and a clear image can be obtained, are provided. The contour emphasizing circuit provides a...
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6667815 |
Method and apparatus for processing images
According to the method and apparatus of processing a digital image for noise suppression and sharpness enhancement, sharpness enhancement and smoothing are performed on an original image to obtain...
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6668097 |
Method and apparatus for the reduction of artifact in decompressed images using morphological post-filtering
An apparatus for post-processing of decompressed images having ringing artifacts identifies edges of the image such as may generate such artifacts and defines zones outside of those edges but...
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6650792 |
Image processor
An image processor containing an EPROM ( 38 ) stored with coefficient data for image enlargement and reduction, coefficient read controllers ( 40-44 ) for reading out coefficient data from the...
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6647152 |
Method and system for contouring reduction
The present invention is directed towards detecting contouring artifacts in a received video signal and reducing the detected artifacts by dithering and/or by adding least significant bits to...
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6642962 |
Merged pipeline for color interpolation and edge enhancement of digital images
A digital-camera processor receives mono-color digital pixels from an image sensor. Each mono-color pixel is red, blue, or green. The stream of pixels from the sensor has alternating green and red...
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6640017 |
Method and apparatus for adaptively sharpening an image
Briefly, in accordance with one embodiment of the invention, a method of sharpening an image includes the following. A crispening parameter is adaptively computed for a captured image based, at...
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6640002 |
Image processing apparatus
An image processing apparatus, including an image taking device which takes an image of an object, an image-data memory in which image data representing the taken image of the object is stored, a...
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6633342 |
Apparatus and method for compensating image signal
An apparatus and method for eliminating noise of a received image and compensating its sharpness is provided. A common circuit is used in a structure for eliminating noise based on a double...
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6628330 |
Color interpolator and horizontal/vertical edge enhancer using two line buffer and alternating even/odd filters for digital camera
A digital-camera processor receives a stream of mono-color pixels in a Bayer pattern from a sensor. Two lines of the pattern are stored in a 2-line buffer. Red, Blue, and Green interpolators...
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6628842 |
Image processing method and apparatus
The image processing method and apparatus enhance the sharpness of photographic images recorded by a silver halide photographic system or a digital still camera. The method and apparatus determine...
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6628840 |
Boundary mapping for multi-pel thickness lines
A method for mapping a boundary for a multi-pel thickness line into a bitmap image which describes the pel boundary with respect to an orthogonal pel array. The line has thickness T centered around...
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6625326 |
Edge enhancement method by 4-directional 1-dimensional high pass filtering
An edge enhancement method by 4-directional 1-dimensional high pass filtering characterized in that 4 adjacent pixels positioned at a pixel point at which the primary pixel has euclidean distance...
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6621595 |
System and method for enhancing scanned document images for color printing
A system and method for enhancing scanned document images utilizes an estimated background luminance of a given digital image to remove or reduce visual “see-through” noise. The estimated...
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6621928 |
Image edge detection method, inspection system, and recording medium
An inspection system which includes a memory for storing image data provided by picking up an image of a workpiece, a monitor for displaying the image data stored in the memory on a display screen...
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6618097 |
Image display apparatus and contour detecting circuit provided therein
A contour detecting circuit includes a first differentiating circuit which outputs a signal (first-differentiated value) obtained by first-differentiating an input video signal, a second...
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6614944 |
Image enhancement filter with adaptive threshold
A method of adaptive spatial filtering for enhancing digital images is presented. A window is applied to a source pixel to generate an array of windowed pixels. An upper threshold value and lower...
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6606420 |
Method and apparatus for digital image darkness control in saturated image structures
A method and apparatus for the control of darkness/lightness in a digital image rendered by a printing system. An original image containing antialiased edges is initially thresholded and filtered...
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6600517 |
System and method for improving the sharpness of a video image
There is disclosed an apparatus for sharpening an edge in a video image. The apparatus comprises: 1) a first circuit for determining a first luminance value of a first pixel associated with the...
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6600518 |
Adaptive clipping prevention for picture sharpness enhancement
A contrast control and clipping device is configured to determine a maximum range of enhancement that may be applied to each pixel for picture sharpness enhancement. This maximum range is used to...
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6590617 |
Edge emphasis device, image forming apparatus, image signal processing method, and image forming method
This invention can suppress overshoot/undershoot, and can maintain the improvement effect of the leading edge of an edge portion. For this purpose, a second derivative signal generator ( 1 )...
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