Matches 201 - 250 out of 323 < 1 2 3 4 5 6 7 >


Match Document Document Title
7018050 System and method for correcting luminance non-uniformity of obliquely projected images  
A system and method corrects luminance non-uniformity caused by images being obliquely projected onto a screen. A camera is used to record the geometry of the obliquely displayed image. Utilizing...
7009622 Image processing apparatus, image processing method, and image processing program  
An image processing apparatus includes a command analyzing unit obtaining color information of each endpoint of an object by analyzing a drawing command, a draw processing unit obtaining the color...
6989913 Halftone dots, halftone dot forming method and apparatus therefor  
Each halftone dot is randomly placed, and the halftone dot area rate at which half of the halftone dots join with their adjacent halftone dots in an image area having a uniform image density is...
6977663 Color error diffusion with color bleed control  
A method for controlling color bleed in relation to a system-invoked halftone color-image process which involves and includes the practice of error diffusion. The proposed method involves (a)...
6965389 Image displaying with multi-gradation processing  
A video signal processing apparatus processes an input video signal for displaying an image based on the video signal. Detected is a gradation level of the input video signal. A color saturation...
6943808 System and method of reducing aliasing in printed images  
The system and method reduces aliasing which is formed by the patterns that are introduced by the halftone screens used in the printer. The system and method provides halftone-specific anti-alias...
6940521 Gray scale processing system and display device  
A display device with a dithering circuit is provided which can perform dithering on an input video signal without causing flicker and dither noise. A correction value is provided to reduce the...
6924819 Image processor  
An image processor includes: a color conversion unit for converting an input signal to color signals of at least four colors; a gamma correction unit for performing gamma correction on the color...
6921172 System and method for increasing projector amplitude resolution and correcting luminance non-uniformity  
A system and method corrects luminance non-uniformity and increases the apparent amplitude resolution of an image generated by a projector. The projector, which has a given number of stated...
6922196 Priority-driven dither  
The present invention presents halftoning techniques for printers and solves problems related to halftoning so as to render a combination of text and image areas in a pleasing manner. An advantage...
6909435 Reduction of gamma correction contouring in liquid crystal on silicon (LCOS) displays  
A method (30) of reducing contouring in a liquid crystal on silicon (LCOS) display can include receiving a frame-doubled input signal (32) comprising a positive picture and a negative picture. A...
6894698 Recovering added precision from L-bit samples by dithering the samples prior to an averaging computation  
A dithering system comprising a dithering unit, a storage medium, and an averaging unit. The dithering unit is configured to receive a set of data values, to add dither values to the data values,...
6882351 Display apparatus with improved suppression of pseudo-contours  
A display apparatus using a subfield drive system suppresses pseudo-contours in moving pictures by identifying areas with smoothly varying gradation values, determining the minimum and maximum...
6876366 Graphic engine for handling sub-pixel regions in a resource-constrained device  
A method for determining areas of sub-pixel regions formed by edges in a pixel includes receiving a first fill style to a first side of an edge, a second fill style to a second side of the edge,...
6873338 Anti-moire pixel array having multiple pixel types  
A two-dimensional array of non-uniformly spaced pixels having a plurality of overlaid pixel sets for avoiding moiré patterns in digital images by avoiding producing an inherent “frequency” or...
6870643 Method and system for error diffusion with a plurality of error measures  
A method (and system) for producing a halftoned image, includes calculating errors corresponding to a plurality of different viewing conditions of a halftone image, and minimizing a function of...
6864870 Liquid crystal display controller with improved dithering and frame rate control and method thereof  
Disclosed is a liquid crystal display (LCD) controller with improved dithering and frame rate control to reduce the physical (hardware) cost and power consumption, and a method thereof. The LCD...
6844882 Variable dithering for GIF  
A method for generating a palette-based output image from a source image by variably dithering regions of the source image using an associated regional dithering mask. The palletized output image...
6842184 Three dimensional stochastic screen for LCD and video  
A dither matrix generator defines a three-dimensional array of pixels referred to as the “cluster array” in which each pixel is designated based on its value as a “cluster pixel” or a “void...
6833932 Method for elimination of spatial artifacts in digital imaging  
A method and system for elimination of spatial artifacts in digital imaging. Aperiodicity is applied to periodic data to mitigate spatial artifacts. The data can be received aperiodically and...
6817721 System and method for correcting projector non-uniformity  
A system and method corrects the luminance non-uniformity of an image generating by a projector by generating a correction look-up table (LUT) for the projector. The projector receives input data...
6801213 System and method for superframe dithering in a liquid crystal display  
A system and method are provided for driving a digital display adapted to depict a first number of bits per color field during each frame. In use, a second number of bits is displayed which is...
6795085 Contouring reduction in SLM-based display  
Methods of reducing contouring in images display by a linear display device, such as a spatial light modulator. The methods operate on a high resolution signal, which represents a stream of pixel...
6788306 Display apparatus displaying pseudo gray levels and method for displaying the same  
A display apparatus is composed of a pseudo gray level data processor generating pseudo gray level data having m bits based on input gray level data having n bits. The pseudo gray level data...
6778186 Method of and apparatus for carrying out gray conversion on color image  
An original color image data is converted to halftone image data having information on density of pixels by a predetermined gray conversion. The predetermined gray conversion includes an RGB ratio...
6756995 Method and apparatus for processing video picture data for display on a display device  
The invention is related to a new kind of dithering method for plasma display panels. In a former Europena Patent Application a dithering method for the plasma display technology has been...
6747661 Graphics data compression method and system  
Graphics data representing color values of pixels are compressed into a data structure. Each pixel has a color value that results from the combination of a luma component and chroma components....
6731299 Apparatus and method for dithering in image processing and computer graphics systems  
A method for converting N-bit image data of a digital image into M-bit image data, in which N−M=K, K>0, is disclosed. The method is adapted to be used for dithering in an image processing system...
6727913 Method and device for displaying images on a matrix display device  
The present invention provides a method of displaying successive image frames or fields on a matrix display device, said display device comprising a predetermined number of display lines each...
6724437 Method and device for adding noise to a video signal for improving a display of the video signal  
In a display driving method, noise is added (NG, AD) to a video signal before the video signal is subjected to a dithering operation (DC). The invention is preferably applied to render non-moving...
6714204 Image processing system  
The present invention provides a system of transmitting image data from a server via a network or another communication path to a cellular phone or another terminal. In order to enhance the...
6714208 Method of displaying monochromatic image on color monitor and image display apparatus for implementing the method  
The method of displaying a monochromatic image on a color monitor and the image display apparatus display the monochromatic image on a color display device with red, green and blue cells as a unit...
6714206 Method and system for spatial-temporal dithering for displays with overlapping pixels  
A method and system for establishing intensity levels for sub-pixels of a display device with overlapping logical pixels. The dithering system combines frame rate control techniques with...
6710778 Method for halftoning using a difference weighting function  
An improved method of digital halftoning using “screens” or dither arrays is provided, including stochastic dither arrays (e.g., stochastic screening). The weakness of ordinary stochastic...
6690389 Tone modifying dithering system  
A method for correcting the tone of an input image for display on a given output device includes the steps of generating a dither template having advantageously more threshold levels than color...
6686922 Adaptive thresholding using loose gray scale template matching  
What is presented is a method for rendering gray half-toned images from a received image wherein the received image is bitmap data including at least a plurality of gray-scale pixel tiles that...
6665454 Dot adjacency compensation in optical storage systems using ink dots  
A method of accurately detecting the value of a dot of sensed image data, said image data comprising an array of dots and said sensed image data comprising a sampling of said image data at a rate...
6646649 Image display device, electronic apparatus having same, and image display method  
A monochrome display device easily and clearly distinguishes a multicolored character image from a multicolored background image by employing four gradations of monochrome. First and second...
6636229 Gradation correction circuit, and &ggr correction apparatus  
A gradation correction circuit comprises: an arithmetic means (101˜104, 106, 108˜110) for operating an output value corresponding to each broken point of a broken line in a vertical blanking...
6600840 Image format conversion such as photometric, rotation, cropping, padding, scaling, dithering, bit padding, grayscale and color transformation, encoding and decoding using a plurality of filters  
The present invention provides a method and system for transforming image data from a present format to a requested format. A request for the image data is received wherein the request includes a...
6587115 Method of an apparatus for distinguishing type of pixel  
The types of pixels of an image made up of a plurality of pixels arranged in a main scanning direction and a sub-scanning direction are distinguished. The image is divided into a plurality of...
6580434 Halftoning without a full range of equally-spaced colors  
A method to use most of the colors that are available when rendering color images where a limited number of colors are available such as rendering images in VGA mode. The instant invention...
6559855 Method for transferring image information, method for updating image information, transferring apparatus and updating apparatus  
The present invention enables image information of high resolution to be transferred via a transmission line with limited band width using a simple configuration. In transferring image information...
6496194 Halftone display method and display apparatus for reducing halftone disturbances occurring in moving image portions  
A halftone display method utilizes an activation sequence, having a plurality of luminance blocks predefined in each frame or field to display an image and having redundancy, that enables one...
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...
6469708 Image dithering device processing in both time domain and space domain  
An image dithering device processing in both time domain and space domain to improve the image quality of an LCD digital display is disclosed. The device comprises a Gamma Table for performing...
6466225 Method of halftoning an image on a video display having limited characteristics  
A method of halftoning input image data intended for reproduction on a display (114) having a plurality of pixels (23-27) and a limited pixel response time (see FIG. 1) is disclosed. In a first...
6448960 Driving method of plasma display panel  
A driving method of a plasma display panel which can perform an image display of a high quality in which a pseudo outline is suppressed while suppressing the number of bits of drive data. A...
6429949 Low memory printer controller  
Apparatus and methods are provided that enables color printers to render color or black and white files in a reduced memory configuration, and in a time efficient fashion.
6417864 Light modulating devices  
When a ferroelectric liquid crystal display (FLCD) panel is addressed in such a manner as to cause adjacent or successive pixels to display different levels of greyscale, the viewer may perceive a...

Matches 201 - 250 out of 323 < 1 2 3 4 5 6 7 >