Class / Patent application number | Description | Number of patent applications / Date published |
358300070 | Rescreening (e.g., converting spatial resolution) | 11 |
20080266609 | METHOD AND DEVICE FOR PROOFING RASTER PRINT DATA WHILE MAINTAINING THE RASTER INFORMATION - The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that, by means of a color space transformation, transformed tonal values and/or intermediate tonal values can be formed which represent a true-to-color proof. | 10-30-2008 |
20090161166 | THERMAL RECORDING DEVICE, IMAGE FORMING METHOD AND PRINTED MATTER - A control section | 06-25-2009 |
20090213433 | SCREEN GENERATING APPARATUS, SCREEN GENERATING METHOD, AND IMAGE PROCESSING APPARATUS - Disclosed is a method of generating a screen for an image processing apparatus, which reproduces a multi-gradation image in one pixel using a PWM technique for controlling a pulse width and reference position data. The method includes inputting image data with a first resolution, virtually increasing the first resolution to a second resolution using the reference position data, and generating a screen with the second resolution with respect to the image data using two reference vectors based on the reference position data. | 08-27-2009 |
20100238510 | IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - Disclosed is an image processing apparatus to perform screen processing for image data, and to form an image based thereon, comprising a screen processing unit to perform the screen processing by using a subcell corresponding to a plurality of pixels, and in which a first and a second threshold values are determined according to each position of the pixels, wherein the screen processing unit obtains threshold values, to output either an invariable value D | 09-23-2010 |
20120194871 | Image Processing Device, Image Processing Method, And Recording Medium Storing A Program Executed By Image Processing Device - An image processing device adjusts black separately from chromatic colors and applies density adjustment capable of controlling the amount of color material according to the density. Such image processing device, capable of communicating with an image recording device, includes a color conversion unit that converts image data expressed in a first color space to color material amount data expressed in a second color space used by an image recording device; a density adjustment unit that increases or decreases the color material amount data based on a specified adjustment value; a dot breakdown unit that converts the increased or decreased color material amount data to dot quantity data expressed as a dot quantity for each of different sizes of dots formed by the image recording device; and a halftone process unit that converts the dot quantity data to data denoting whether or not the dots are formed. | 08-02-2012 |
20130271794 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming station for forming a pattern image on a recording material; an image reading station for reading a pattern image formed on a recording material by the image forming station; and a tone gradation corrector for calculating a halftone dot area property on the basis of the density of the pattern image read by the image reading station and for executing tone gradation correction in the image forming station on the basis of the calculated halftone dot area property. | 10-17-2013 |
20130314750 | RESCREEINING SELECTED PARTS OF A HALFTONE IMAGE - An apparatus for enhancing halftone image ( | 11-28-2013 |
20150049366 | QUANTIZATION METHOD, IMAGE PROCESSING APPARATUS, AND RECORDING MEDIUM - A quantization method according to an aspect of the present invention includes the steps of quantizing a first image data by the use of a basic pattern and converting the first image data into a second image data that represents a binary or multi-level quantized pattern having a gray level smaller than that of the first image data. The basic pattern according to this aspect of the present invention presents high frequent occurrence of the basic tone patterns and a mostly uniform-distributed pattern of the clusters of different kinds of the basic tone patterns in the image with the long-distance autocorrelation (periodicity) of the basic tone patterns suppressed. Quantization by the use of this basic pattern provides a quantized pattern that reflects pattern characteristics of the basic pattern. | 02-19-2015 |
20150062659 | Raster Image Processor With Printhead Profile Compensation for a Multi Level Digital Printing Machine - A system and method of calibration, screening, and compensation is presented for multiple gray-level digital presses. Unequal quantization of the input range is employed with compensated overlapping of sub-ranges. Multiple instances of bi-level screening algorithms, tone modification functions, and a recombination algorithm are employed to produce calibrated screening on individual tone ranges. The method works with any bi-level screening algorithm and devices with any number of gray-levels. Quality imaging results from high detail, high tonal accuracy, low screening noise, and lack of printed artifacts. Dynamic re-calibration is facilitated. The elimination of the constraint of evenly spaced gray-levels also has advantages of cost and yield for both print head fabricators as well as digital press manufacturers. Multiple implementations of the system and method are given for both hardware and software embodiments of the invention. | 03-05-2015 |
20150103381 | Image Processing that Generates and Density Corrects Ink Amount Data - An image processing device comprises a color conversion unit that converts image data expressed in a first color space to ink quantity data expressed in a second color space, the ink quantity data comprising ink quantity data for chromatic color and ink quantity data for black; and a density adjustment unit that increases or decreases the ink quantity data for chromatic color based on a first adjustment value specified for chromatic color and increases or decreases the ink quantity data for black based on a second adjustment value specified for black. | 04-16-2015 |
20160255240 | HALFTONING | 09-01-2016 |