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Browse by Category: Main > Optical & Optics
Class Information
Number: 382/252
Name: Image analysis > Image compression or coding > Quantization > Error diffusion or dispersion
Description: Subject matter in which any error in a given output image value that results from quantization is distributed among surrounding values so as to reduce the losses that accumulated errors would have on the output image as a whole.










Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8693058 Image forming apparatus and image forming method to provide multi-bit data by combining a plurality of successive binary data Apr. 8, 2014
8687906 Image processing device, image processing method, and storage medium for performing pseudo graduation-increased processing Apr. 1, 2014
8670629 Image processing apparatus, image processing method, and program for converting an m-value into an n-value image Mar. 11, 2014
8666187 Image reproduction apparatus and image reproduction method Mar. 4, 2014
8665487 Calibration of half-tone densities in printers Mar. 4, 2014
8655065 Image processing device using adding module for adding error diffusion value or error diffusion seed Feb. 18, 2014
8625163 Selecting dither matrix based upon determination of toner Jan. 7, 2014
8600184 System and method for reducing artifacts in images Dec. 3, 2013
8582908 Quantization method and apparatus Nov. 12, 2013
8577162 Output apparatus and output method Nov. 5, 2013
8576447 Error diffusion halftoning with bandpass noise shaping Nov. 5, 2013
8559760 Spectral image dimensionality reduction system and method Oct. 15, 2013
8554006 Image processing apparatus, filter device, methods of controlling same and computer programs therefor Oct. 8, 2013
8538183 System and method for approximating a diffusion profile utilizing gathered lighting information associated with an occluded portion of an object Sep. 17, 2013
8509313 Video error concealment Aug. 13, 2013
8482801 Storage of stamp information for error diffusion Jul. 9, 2013
8483502 Image processing apparatus including error diffusion processing which adds green noise characteristics, image processing method including error diffusion processing which adds green noise char Jul. 9, 2013
8463063 Image processing apparatus, method and program for gradation conversion Jun. 11, 2013
8451499 Multi-level image conversion using error-diffusion with improved speed by processing quadrangular image segments May. 28, 2013
8441687 Image processing apparatus, image processing method, and program May. 14, 2013
8437046 Image processing apparatus and method for outputting an image subjected to pseudo-halftone processing May. 7, 2013
8427706 Error diffusion halftoning techniques and configurations Apr. 23, 2013
8422079 Image forming apparatus and image correction method for correcting scan-line position error with error diffusion Apr. 16, 2013
8416256 Programmable dithering for video displays Apr. 9, 2013
8396314 Method and apparatus for inverse quantizing image, and method and apparatus for decoding image Mar. 12, 2013
8391624 Apparatus and method for quantizing image data Mar. 5, 2013
8363278 Method and apparatus capable of producing FM halftone dots in high speed Jan. 29, 2013
8363279 Method and device for setting multiple tones in halftone process to prevent mixing of adjacent ink dots Jan. 29, 2013
8363889 Image data processing systems for hiding secret information and data hiding methods using the same Jan. 29, 2013
8363718 Method for correcting a quantized data value and associated device Jan. 29, 2013
8355176 Image processing apparatus and image processing method for halftoning screen processing Jan. 15, 2013
8346001 Image processing apparatus, printing apparatus, and image processing method Jan. 1, 2013
8339673 Method and apparatus for improving edge sharpness with error diffusion Dec. 25, 2012
8320694 Surround error diffusion Nov. 27, 2012
8305387 Adaptive pulse-width modulated sequences for sequential color display systems Nov. 6, 2012
8294952 Memory efficient hierarchical error diffusion with color consistency constraints Oct. 23, 2012
8284452 Method for screening color separations of a lenticular image and method for producing a lenticular image on a printing material Oct. 9, 2012
8274705 Multi-level surround error diffusion Sep. 25, 2012
8270746 Image compression method and device thereof Sep. 18, 2012
8259358 Apparatus for eliminating moire in scanned image and method for the same Sep. 4, 2012
8248660 Efficient diffusion dithering using dyadic rationals Aug. 21, 2012
8208172 Image forming apparatus and image forming method Jun. 26, 2012
8208543 Quantization and differential coding of alpha image data Jun. 26, 2012
8194995 Fast camera auto-focus Jun. 5, 2012
8175149 Method and apparatus for controlling bitrate of scalable video stream May. 8, 2012
8170357 Apparatus and method for generating coded block pattern for alpha channel image and alpha channel image encoding/decoding apparatus and method using the same May. 1, 2012
8169663 Image processing system and method for quantizing an image by using an error diffusion method May. 1, 2012
8169665 Tone dependent green-noise error diffusion method and printing device thereof May. 1, 2012
8154777 Color compensation of images Apr. 10, 2012
8155445 Image processing apparatus, method, and processing program for image inversion with tree structure Apr. 10, 2012

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