Class 345/599 - Spatial

Subclass of Class 345 - Computer graphics processing and selective visual display systems
Definition: Subject matter where a shade of gray is approximated by
No. of patents: 39
Last issue date: 05/27/2008

Number	Title	Issue Date
7379072	Method for determining weighting factors for the color calculation of a color value of texels for a footprint In a method for determining weighting factors for the color calculation of a color value of texels for a footprint covering a plurality of texels in a texel grid, in a graphic system, form information of the footprint is determined at first. Afterwards, the edges of...	05/27/2008
7369277	Image processing apparatus, drawing processing method, and computer program A drawing instruction processor refers to a bit map line table that shows whether the bit arrays in the row unit are the same in the order of concentrations. The drawing instruction processor decides whether dither patterns to be used for the adjacent specified draw...	05/06/2008
7327373	3D dither algorithm A four-time resolution refinement of 3D-dither algorithm is provided in this present invention. A 4×2 pixel-block is treated as an observed unit in this present invention, which includes two 2×2 pixel-blocks. In order to eliminate moving lines and dithered edges, ...	02/05/2008
7286142	System and method for optimising halftoning printer performance A method of rendering a plurality of graphical objects of an image on a scanline basis, with each scanline having at least one run of pixels, and each run of pixels being associated with at least one of the graphical objects such that the pixels of the run are withi...	10/23/2007
7268790	Display system with framestore and stochastic dithering A display system provides temporal stochastic dithering to image data for storage in a frame buffer for display. Stochastic dithering is used to reduce the size of the frame buffer and the complexity of the drive circuitry that is used to display an image in accorda...	09/11/2007
7268783	Image alias rejection using shaped statistical filtering Image alias rejection when converting a high resolution rasterized waveform to a lower resolution rasterized waveform for display uses a statistical filter. The statistical filter provides a shaped probability density function either by combining the outputs of mult...	09/11/2007
7256794	Method and apparatus for processing video data of display device Discloses herein is a method and apparatus for processing video data of a display device in which dithering noise generating when a motion picture is displayed can be minimized. According to the present invention, the method of processing the video data of the displ...	08/14/2007
7233339	Method and apparatus for performing dithering A method and apparatus for dithering may provide filtering M bit data and performing a temporal/spatial compensation based on LSB of the filtered M bit data. The dithering may be performed on a selected frame. M-2 bits of the M bit data may be specified as a referen...	06/19/2007
7209144	Image-display apparatus, image-display method, and image-display program Aspects of the invention provide an image-display apparatus including an image display, such as a liquid-crystal display panel, where the image display can display a limited number of gray scales, interpolation is performed so that the number of gray scales displaye...	04/24/2007
7206099	Media/screen look-up-table for color consistency In an image rendering system, a method of compensating for system performance changes related to image attributes includes rendering a diagnostic image, sensing at least one image quality from the diagnostic image, updating an image attribute compensation tone repro...	04/17/2007
7206000	System and process for generating a two-layer, 3D representation of a scene A system and process for generating a two-layer, 3D representation of a digital or digitized image from the image and a pixel disparity map of the image is presented. The two layer representation includes a main layer having pixels exhibiting background colors and b...	04/17/2007
7193604	Shift register circuit, image display apparatus having the circuit, and driving method for LCD devices A shift register circuit includes a plurality of latch circuits connected in series to sequentially transfer a pulse signal ST from one to another, a clock signal line transmitting a clock signal CLK, and a plurality of switching circuits performing electrical conne...	03/20/2007
7129955	Image displaying method and image displaying device When displaying an image with at least four primary colors mixed, there are provided a primary color B generating unit (1036) having, as an xy chromaticity, (x, y)=(0.150, 0.060) and generating a primary color B lowest in luminance, a primary color G generati...	10/31/2006
7098927	Methods and systems for adaptive dither structures Embodiments of the present invention comprise methods and systems for adaptive dither pattern array generation and application. ...	08/29/2006
7079154	Sub-pixel assembly with dithering A sub-pixel assembly of one embodiment of the invention is disclosed that includes a number of active display units. Each active display unit is capable of controlling light, and has a turn-on threshold responsive to a signal. The active display units are organized ...	07/18/2006
7043089	Overflow error diffusion Methods, devices and systems for overflow error diffusion in image processing are provided. A method includes calculating error values, em, corresponding to differences between modified intensity values for a number of pixel locations and one or more thre...	05/09/2006
7019761	Methods for auto-separation of texts and graphics The present invention is directed to a method of discriminating between textual content and graphical content. The method includes the steps of receiving a plurality of pixel values for a pixel line segment, calculating a plurality of spatial gradients based on the ...	03/28/2006
7015926	System and process for generating a two-layer, 3D representation of a scene A system and process for generating a two-layer, 3D representation of a digital or digitized image from the image and a pixel disparity map of the image is presented. The two layer representation includes a main layer having pixels exhibiting background colors and b...	03/21/2006
6961037	Processing of image data supplied to image display apparatus The technique of the present invention carries out image processing of image data, which are to be supplied to an image display apparatus having a less number of expressible tones than a number of tones included in original image data and a non-linear display charac...	11/01/2005
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 of this technique is that it gradually switches from text rendering t...	07/26/2005
6879329	Image processing apparatus having processing operation by coordinate calculation An image processing apparatus draws an image, stores the drawn image in a memory, reads image data from the memory along a raster direction, and executes a processing operation required for a display with respect to the read image data to output the processed image ...	04/12/2005
6879313	Shift register circuit, image display apparatus having the circuit, and driving method for LCD devices A shift register circuit includes a plurality of latch circuits connected in series to sequentially transfer a pulse signal ST from one to another, a clock signal line transmitting a clock signal CLK, and a plurality of switching circuits performing electrical conne...	04/12/2005
6839065	Method for producing bump mapping effect for a three dimensional object of a computer graphic A method is for producing the bump mapping effect for a 3D object in a computer graphic. First, a shading vector is produced at one point of the surface of the 3D object. A shift coordinate with respect to this point is determined, according to the shading vector. A...	01/04/2005
6690499	Multi-state light modulator with non-zero response time and linear gray scale A multi-state light modulating system having grayscale based on a series of time intervals includes an arrangement that establishes the duration of each time interval such that the time intervals in the series have progressively varying duration. The arra...	02/10/2004
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 halftone cycle (K=n), the method comprises (first) halftoning...	10/15/2002
6437787	Display master control A display master control (200) apparatus and method is provided for controlling a digital video pipeline within a reduced instruction set processor (120) for performing field-level control of the post filter 110, includes field/frame filtering display wit...	08/20/2002
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 pseudo edge effect caused by the perceived error in the tr...	07/09/2002
6266068	Multi-layer image-based rendering for video synthesis A computerized method and related computer system synthesize video from a plurality of sources of image data. The sources include a variety of image data types such a collection of image stills, a sequence of video frames, and 3-D models of objects. Each ...	07/24/2001
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 comprises an array of dither threshold values used by a dithe...	07/04/2000
5784049	Image display using evenly distributed intensity clusters A method and apparatus for digital halftoning provides evenly distributed intensity clusters within a halftone cell. Pixel illumination ordering is determined based on adjacency from a candidate pixel to other pixels already placed in the order of illumin...	07/21/1998
5625772	Gray-scale font generating apparatus utilizing a blend ratio A gray-scale display device such as a general display for a personal computer or work station, a laser printer or a color printer. A gray-scale font generating apparatus used in the display device includes an input unit for inputting the information repre...	04/29/1997
5572638	Image formation system invalidating outline correction within gradation image region In an image formation system, when a halftone region is contained in a raster image data stored in an image memory, the halftone image region is set as a transparent region and the outline correction of the transparent region is made invalid. The image fo...	11/05/1996
5301269	Window-relative dither circuit A circuit for performing window-relative dithering of intensity data comprises a programmable dither cell; circuitry for comparing dither values stored in the dither cell with selected parts of the intensity values and outputting an increment signal in ac...	04/05/1994
5264840	Method and apparatus for vector aligned dithering A method and apparatus for dithering vectors in which the dither matrix is aligned to the vector and not to the display coordinate space. The dither matrix is aligned to the vector according to the major axis of the vector. In a preferred embodiment the d...	11/23/1993
5220647	Image processing method A method for processing images is useful for generating a chain code representation of a configuration of pixels in an image. The method stores a pixel representation in first frame memory. For each pixel, "convolution information" is stored in a second f...	06/15/1993
5003303	Character and other graphical generating systems for video display A character generating system is disclosed having a source of batches of video keying signals representing different characters combined with further keying signals representing a background for the respective character. The video keying signals are confi...	03/26/1991
4706077	Halftoning implementation for interactive image editing A circuit for producing a "knight ordered dither" halftone pattern for a CRT and a "double spiral" halftone pattern for a xerographic printer is described. The circuit comprises a RAM for storing the threshold values, a comparator, and supporting addressi...	11/10/1987
4698778	Method of processing gradation information with variable magnification A mother matrix pattern as a fixed matrix pattern is specified with gradation data, and information in an area of the specified mother matrix pattern in accordance with the instructed magnification is extracted as information of a child matrix pattern so ...	10/06/1987
4598282	Video retouching system This concerns retouching a set of n input image signals (1), one for each of the image printing colors, by converting these signals into a set of signals in a format (R, G, B) suitable for displaying the image on a monitor (3) to be viewed by an operator ...	07/01/1986

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Class 345/599 - Spatial