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Match Document Document Title
6388673 Method and system for filter type approximation in computer graphics processing  
A method and system for an approximation of a filter function for computing a characteristic value of an output pixel based on characteristic values of a plurality of input pixels is provided. A...
6362834 Flat-panel display controller with improved dithering and frame rate control  
A flat-panel display controller generates signals to cause display of images on TFT and STN type flat-panel displays. The display controller includes dither logic and frame rate control logic. The...
6359626 Multisample dither method with exact reconstruction  
A method and apparatus for multisample dithering is provided. For the method of the present invention, a graphics pipeline generates a series of b-bit color sample values for each pixel that is to...
6343159 Method and apparatus for modeling and reconstruction of halftoned images  
The methods and apparatus of this invention model and reconstruct binarized images. A grayscale image is modeled using a template matching approach. Each binarized grayscale image value is...
6330368 Method for generating dither values for one-dimensional dither arrays  
A method generates a one-dimensional dither array having a predetermined number of dither values stored at addresses of the array includes the steps of generating a choice size vector and a choice...
6262745 Digital halftoning using prioritized textures  
A technique of stroke substitution and digital halftoning uses prioritized textures to produce digital halftones which appear to be hand drawn in the traditional pen and ink fashion. A user may...
6252578 Method for reducing flicker when displaying processed digital data on video displays having a low refresh rate  
An apparatus for processing digital display data is described, wherein the digital display data has a fixed number of pixels in each display line, and the apparatus has a horizontal averaging...
6249272 Image processing method and device  
An image processing method and device corrects an empty dot between Polygons on a video screen at high speed without unnecessarily deforming a shape of the Polygons. Three latches 10, 12, 14 are...
6232953 Method and apparatus for removing artifacts from scanned halftone images  
A method for removing artifacts from a bitmap of image data produced by scanning a halftone image may comprise the steps of: (a) calculating a weighted average intensity value for a target pixel...
6229624 Transform for digital images  
A method for selecting an aim curve for a desired medium having a predetermined maximum density, including selecting an aim curve from a family of aim curves for a different medium having a lower...
6215492 Apparatus for supporting retrieval of articles by utilizing processed image thereof  
An article retrieval support apparatus which is capable of limiting the number of identification data of articles among which retrieval is to be executed through displaying images of the...
6211859 Method for reducing pulsing on liquid crystal displays  
A method for displaying grey-scale images at a desired grey scale resolution up to the visible limit on a display having a matrix of pixels, includes the steps of: defining a plurality of control...
6191793 Method and apparatus for texture level of detail dithering  
A computationally efficient method for minimizing the visible effects of texture LOD transitions across a polygon. The minimization is accomplished by adding a dithering offset value to the LOD...
6185334 Method for reconstructing a dithered image  
A method of reconstructing an image from a dithered image. A predefined set of filters having different regions of support is established. Each filter is defined by a number of filter coefficients...
6154195 System and method for performing dithering with a graphics unit having an oversampling buffer  
A dither unit preferably comprises an offset generator, an adjusted coordinate generator and a dither matrix. The offset generator is coupled to receive information about the relative position of...
6130661 Seamless parallel neighborhood process halftoning  
A method and apparatus are disclosed which permit a seamless halftoning of an image by halftoning regions of the image independently and/or in parallel. Each region of the image being arbitrarily...
6124844 Force field halftoning  
A method and apparatus are disclosed which permit halftoning of pixels in an image based upon the relative repulsive forces between a current pixel being halftoned and preferably all previous...
6118413 Dual displays having independent resolutions and refresh rates  
A video controller for controlling at least two video displays having independent refresh rates and pixel resolutions. In a first embodiment, two separate data paths are provided within a video...
6104377 Method and system for displaying an image at a desired level of opacity  
Displaying an image at a particular level of opacity on a pixel-oriented output device by selecting a dithered pattern corresponding to the desired opacity level. The image is divided into tiles...
6088039 Compression of grey scale images of text  
An image stored in a memory of a computer as pixels, each pixel including a bit pattern to indicate a grey-scale level. The image is compressed by grouping the pixels of the image into a plurality...
6084560 Image display for dither halftoning  
Disclosed is an image display apparatus for dither halftoning a video signal that enters from an external unit and displaying the resulting video signal on a display unit. A dither table, which...
6069609 Image processor using both dither and error diffusion to produce halftone images with less flicker and patterns  
An image processing device has an error distribution unit, and a multiplier. The error distribution unit carries out an error distribution operation to artificially increase the number of shades...
6052113 Methods and apparatus for processing data values representative of an image with efficient dither matrices  
Data values representative of a source image are processed with a dither matrix having dither values corresponding to pixel locations in the source image. The dither matrix has dimensions n×n,...
6052112 Gradation display system  
A sub-field array is formed by providing a sub-field corresponding to an m-th bit sub-field (m and n being a positive integers of m≤n and representing the most significant bit place when m is 1)...
6046748 Cooperative filter and raster operation evaluation model  
A method and apparatus for handling transparency operatives simultaneously with raster operatives in a graphics environment. This is achieved by introducing filter operations to obtain the effect...
6040819 Display apparatus for reducing distortion of a displayed image  
A display apparatus, in which one field is divided into a plurality of sub-fields, and a relative ratio of luminescent time of each sub-field is previously determined so that by determining a...
6034663 Method for providing grey scale images to the visible limit on liquid crystal displays  
A method for displaying grey-scale images at a desired grey scale resolution on a display having a matrix of pixels, comprises the steps of: defining a control matrix having a size smaller than...
6023264 Method to estimate the white point on a display device  
A method for estimating a white point includes displaying a plurality of grey patches on a screen; requesting that a user select a patch corresponding to a neutral grey; and iteratively converging...
5990863 Image display system  
An image display system is provided with a difference calculator for calculating, when interlacing video signals are entered, differences between fields from the input interlacing video signals...
5986640 Display device using time division modulation to display grey scale  
A display device includes a deformable mirror device wherein grey scales are displayed using a time division modulation process in which the times or sub-frame periods for which each mirror within...
5986637 Digital oscilloscope architecture for signal monitoring with enhanced duty cycle  
To increase the percentage of time that an input signal is actively monitored, a digital oscilloscope has an acquisition system (100) that includes an analog-to-digital converter (15), an...
5943063 Method and apparatus for rendering characters  
A method for creating anti-aliased characters on a computer output device includes the steps of generating a call from a client process for a character to be rendered, rendering the character at a...
5926164 Image processor  
An infrared-spectrum image processor mounted in a vehicle assists a driver in seeing under difficult conditions, such as rain, smog or fog. The device operates, in part, on the principle that...
5880702 Display control apparatus and method  
An image is displayed in an optimum state in accordance with the state of a display. For this purpose, an FLCD interface mounted in an information processing apparatus and an FLCD for actually...
5856823 Plasma display  
A plasma display having a quartet type pixel structure provides a high grade and excellent picture quality picture and maintains good white balance and excellent intensity levels. The plasma...
5831626 Method and apparatus for generating halftone image with halftone dot rate correction  
A plurality of correction look-up tables are prepared corresponding to offsets of halftone dot areas. An offset of a halftone dot area including the subject pixel is calculated, and a correction...
5808622 Image display using irregularly placed curving structures  
A method and apparatus for digital halftoning places curving structure centers at random locations within a halftone cell. Pixel illumination ordering is determined based on displacement from a...
5777599 Image generation device and method using dithering  
This invention relates to an improved image processing device which more rapidly provides an image that appears to have a greater resolution by using dithering to an output device having a lower...
5761392 Process of making two adjacent uniformly colored objects appear with a diminished gap in between  
A process is provided for avoiding a gap between adjacent uniform color objects in an image. First, it is first determined whether the image data contains two adjacent uniform color objects, each...
5714975 Apparatus and method for generating halftoning or dither values  
In an image-data processing apparatus, halftoning or dither values are generated by performing operations on initial "seed" values. In one example, this is done within the registers in the central...
5579457 Image display apparatus and method using irregularly placed curving structures  
A method and apparatus for digital halftoning places curving structure centers at random locations within a halftone cell. Pixel illumination ordering is determined based on displacement from a...
5500924 Method for vector plotting a bitmap with a reduced number of lines  
From a matrix of elements representing an image, coordinates of each end of lines in a parallel array are generated. The lines in the array join adjacent elements in the same binary state. The...
5495346 Element generator for dither matrix and a dithering apparatus using the same  
An element generator for a dither matrix comprises a logic device which receives a row address and a column address and performs a logic operation thereon so as to produce a dither element...
5483634 Display control apparatus and method utilizing first and second image planes  
A display control apparatus includes an input device to input image data, a memory to store the inputted image data by an amount corresponding to first and second image planes, a comparator to...
5461398 Video preamplifier with fast blanking and halftone capability on a single integrated circuit chip  
A method and circuit (30) for providing drive signals that have a half-tone and fast blanking capability to a video display (20) has a video preamplifier (31) integrated on a semiconductor...
5381519 System for line interpolation for computer graphics displays  
Primitive data in the form of defined lines for a computer graphics display is processed as by interpolating triangles, as during scan conversion, and by treating lines as triangle edges. An...
5371515 Method and apparatus for non-linear dithering of digital images  
The method and apparatus of the present invention takes into consideration that the eye is more sensitive to intensity variations at low levels of intensity than at high levels of intensity and...
5293258 Automatic correction for color printing  
Automatic processing of color signals to print an accurate reproduction of an original color image. The RGB scan signals are processed to use the full dynamic range of the system and to adjust the...
5271095 Image processing apparatus for estimating halftone images from bilevel and pseudo halftone images  
An image processing apparatus for receiving digital image data including bilevel images such as character and line draw images and pseudo halftone images such as dither image and error diffusion...
5260873 Medical image displaying apparatus  
A medical image displaying apparatus is provided with a display device, which reproduces a visible image from an image signal made up of a series of image signal components representing a medical...

Matches 251 - 300 out of 323 < 1 2 3 4 5 6 7 >