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Class Information
Number: 358/3.13
Name: Facsimile and static presentation processing > Static presentation processing (e.g., processing data for printer, etc.) > Attribute control > Multi-level image reproduction (e.g., gray level reproduction) > Halftoning (e.g., a pattern of print elements used to represent a gray level) > Dithering (e.g., spatial distribution of print elements by threshold matrix)
Description: Subject matter wherein the pattern or distribution of print elements forming a halftone pattern is determined by comparing a discrete density value (gray level) to an array of threshold values.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619778 |
Method of generating a threshold matrix for producing a color separation, the matrix having a varied intensity distribution, method of reproducing a color image using the threshold matrix, app |
Nov. 17, 2009 |
| 7616340 |
Image processing method and apparatus, threshold value matrix creating method, image forming apparatus, sub-matrix creating method and program |
Nov. 10, 2009 |
| 7616347 |
System and method for multi-bit halftoning |
Nov. 10, 2009 |
| 7599097 |
Method and system for designing multilevel halftone screens using spot functions |
Oct. 6, 2009 |
| 7589868 |
Method and apparatus for creating 3D-prints and a 3-D printing system |
Sep. 15, 2009 |
| 7585040 |
Printing apparatus and printing method |
Sep. 8, 2009 |
| 7586649 |
Method and device for compressing image data |
Sep. 8, 2009 |
| 7580156 |
Image processing system, image processing device, dot data processing device, and method and program product therefor |
Aug. 25, 2009 |
| 7576888 |
Color reduction processing apparatus and color reduction method |
Aug. 18, 2009 |
| 7564586 |
Method, system and computer program for compressing and transmitting image raster data |
Jul. 21, 2009 |
| 7557962 |
System and method for tone-dependent multi-frequency halftone screening |
Jul. 7, 2009 |
| 7554697 |
Image forming apparatus, image forming method, and image forming program |
Jun. 30, 2009 |
| 7542169 |
Halftone image processing using a dither matrix with a consecutive order and shifted from an adjoining block in a main scan direction |
Jun. 2, 2009 |
| 7538909 |
Defective nozzle compensation |
May. 26, 2009 |
| 7532365 |
Threshold matrix generation method, threshold matrix generation apparatus, and recording medium |
May. 12, 2009 |
| 7532364 |
Image processing device, image output apparatus, and storage medium storing image processing program |
May. 12, 2009 |
| 7522312 |
Threshold matrix, a method of generating the same, and a method of reproducing color image |
Apr. 21, 2009 |
| 7518754 |
Apparatus and method for error diffusion with dither |
Apr. 14, 2009 |
| 7515303 |
Process for the modeling of dots for a screen |
Apr. 7, 2009 |
| 7511857 |
Halftoning method and system |
Mar. 31, 2009 |
| 7511856 |
Threshold matrix, storage unit for storing threshold matrix as data, and raster image processor incorporating storage unit |
Mar. 31, 2009 |
| 7505177 |
Method for generating a threshold value matrix for frequency modulated half-toning |
Mar. 17, 2009 |
| 7499198 |
Threshold value matrix, image processing apparatus, image forming apparatus and printer driver |
Mar. 3, 2009 |
| 7495798 |
Ejection control of quality-enhancing ink |
Feb. 24, 2009 |
| 7491424 |
Reproduction of security documents and color images with metallic inks |
Feb. 17, 2009 |
| 7492482 |
Image processing apparatus, image processing method and image processing program |
Feb. 17, 2009 |
| 7492484 |
Image signal processing method and apparatus for limiting amount of toner stick |
Feb. 17, 2009 |
| 7486420 |
Flexographic printing |
Feb. 3, 2009 |
| 7483039 |
System for programmable dithering of video data |
Jan. 27, 2009 |
| 7483587 |
Iterative filtering for dithered imaging |
Jan. 27, 2009 |
| 7474443 |
Image formation using dots of different spatial density determined based on comparison of pixel value to threshold value matrix and error added by error diffusion |
Jan. 6, 2009 |
| 7474316 |
Bit-depth extension of digital displays via the use of models of the impulse response of the visual system |
Jan. 6, 2009 |
| 7471421 |
Method of generating threshold matrix and recording medium storing data of threshold matrix |
Dec. 30, 2008 |
| 7468814 |
Algorithm for controlling half toning process |
Dec. 23, 2008 |
| 7463387 |
Multilevel value output device |
Dec. 9, 2008 |
| 7457001 |
Half-toner compositor for use in a print engine/controller |
Nov. 25, 2008 |
| 7457004 |
Halftone dot formation method, halftone dot formation apparatus, threshold matrix generation method used therefor and halftone dot recording medium |
Nov. 25, 2008 |
| 7446904 |
Methods and apparatus for generating dither mask through interpolation between preferred patterns |
Nov. 4, 2008 |
| 7443541 |
Image processing apparatus and image processing method |
Oct. 28, 2008 |
| 7440141 |
Method for generating a dither mask |
Oct. 21, 2008 |
| 7429092 |
Method of printing with a personal computer and connected printer |
Sep. 30, 2008 |
| 7420570 |
Methods and systems for video processing using super dithering |
Sep. 2, 2008 |
| 7420709 |
Dither matrix generation |
Sep. 2, 2008 |
| 7397580 |
Ejection control of quality-enhancing ink |
Jul. 8, 2008 |
| 7385731 |
Method and system for processing a multi-colour image |
Jun. 10, 2008 |
| 7370929 |
Printer, dither matrix generation method, and recording medium |
May. 13, 2008 |
| 7369276 |
Multi-level halftoning providing improved texture uniformity |
May. 6, 2008 |
| 7369277 |
Image processing apparatus, drawing processing method, and computer program |
May. 6, 2008 |
| 7365883 |
Dither matrix design using sub-pixel addressability |
Apr. 29, 2008 |
| 7359091 |
Multi-bit output sampled threshold array halftoner |
Apr. 15, 2008 |
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