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| Number | Title | Issue Date |
| 8139267 | Method, apparatus and program for creating a threshold value matrix In a first process, initial dot pattern of a predetermined dot rate “a” is created in a first process, and a gradation value corresponding to the dot rate “a” is arranged as a threshold value in the position of the pixel of the threshold value matrix corresp... | 03/20/2012 |
| 8040568 | 4+ color management using a virtual CMYK color paradigm A color management method, system and storage medium output 4+ color separation signals to a 4+ (5 or more) color print engine. An input source color is converted into virtual intermediate CMYK separation signals using a 4-color management tool, which may be a conve... | 10/18/2011 |
| 8004721 | Halftone apparatus that provides simultaneous, multiple lines per inch screens A halftone threshold matrix includes a plurality of submatrices, wherein a first group of the plurality of submatrices has a line screen frequency different from a second group of the plurality of submatrices. The halftone method and apparatus removes the restrictio... | 08/23/2011 |
| 7961356 | Image processing apparatus including adjustable shading profile and shading method thereof Embodiments of image processing apparatuses and methods according to the present general inventive concept may generate and/or store shading profile information based on an image characteristic relative to a prescribed condition of that characteristic such as accord... | 06/14/2011 |
| 7843608 | Image processing apparatus capable of preventing pseudo coutour There is provided an image processing apparatus employing an error diffusion method capable of preventing a pseudo contour attributable to a delayed dot. The image processing apparatus receives an error diffused from a neighboring pixel and corrects a value (an inpu... | 11/30/2010 |
| 7830554 | Fiducial artifact detection and compensation algorithm Defects in an image forming system may give rise to scratched fiducials, missing fiducial regions, or other defects in an image that can run parallel to the process direction. The present disclosure provides for a fiducial compensation method and system for detectin... | 11/09/2010 |
| 7826099 | Variable-dot halftoning A method for enabling a program that communicates a document description from a composition system to a printing system to manage variable-dot halftones for use with variable-dot printing devices, comprising the steps of creating a set of strings, each string defini... | 11/02/2010 |
| 7768674 | Exposure determining device and exposure determining method There is provided an exposure determining device that determines whether exposure of an image represented by image data is appropriate. The exposure determining device includes a first evaluation value deriving unit that derives a maximum luminance reference value f... | 08/03/2010 |
| 7623271 | Automatic grainy noise control for optimal macro uniformity appearance A system's intrinsic mottle & graininess levels are either measured or predicted based on the knowledge of system states including material states and actuator states. The optimal amount of total graininess is then calculated based on established visual models or cu... | 11/24/2009 |
| 7599098 | System and methods for color matching overprinted documents A system and methods for color matching overprinted graphic documents is described. Graphic elements in a document are examined to determine overlapping regions. The overlapping graphic elements in each region are examined to determine which graphic elements contrib... | 10/06/2009 |
| 7593135 | Digital image multitoning method A method for multitone processing an N level digital image to produce an M level digital image wherein M | 09/22/2009 |
| 7564591 | Image processing apparatus and image processing method In a printer, when difference in ejection characteristic among nozzles appears as density non-uniformity and the way of letting the density non-uniformity appear is different depending upon kind of image, proper density correction is performed. Specifically, the kin... | 07/21/2009 |
| 7545539 | Apparatus and method for adjusting sharpness of image A method for adjusting a target gray level of a target pixel based on a spatial mask is provided. The target pixel is surrounded with N adjacent pixels; each of the N adjacent pixels respectively has an adjacent gray level. The method first multiplies the target gra... | 06/09/2009 |
| 7466455 | Image processing method and system for performing monochrome/color judgement of a pixelised image An image processing system and method are provided for judging whether a pixelised image or a part thereof is a monochrome or a color image. To increase the reliability of the judgement, instead of making the judgement on the level of an individual pixel, the judgem... | 12/16/2008 |
| 7443541 | Image processing apparatus and image processing method An image processing apparatus includes: a recording rate determining section for determining a recording rate of each of a plurality of dot types having different densities per unit area from each other according to an input value including a multi-gradation image d... | 10/28/2008 |
| 7440142 | Image processing system with multi-valued processing An image processing system receives an input gradient number m, input image data I(x,y) whose input gradient number is m, and an output gradient number n and calculates output image data O(x,y) having an output gradient number of n on the basis of the following form... | 10/21/2008 |
| 7420708 | Method for processing color image data employing a stamp field A method for processing image data that employs a stamp field that contains data representing a distance metric for use with a variety of error diffusion operations. The distance metric possesses distance-order preservation permitting the distance from a previous do... | 09/02/2008 |
| 7420710 | Optical proximity correction in raster scan printing based on grayscale manipulation of the bitmap Methods and apparatus for correcting defects, such as rounded corners and line end shortening, in patterns formed via photolithography are provided. Such defects are compensated for “post-rasterization” by manipulating the grayscale values of pixel maps. ... | 09/02/2008 |
| 7408672 | Image processing apparatus, image forming apparatus and image forming method When a print key on a console panel is depressed, a main CPU confirms enlargement/reduction rate information input via the console panel, and then, performs line thinning by setting a line thinning parameter according to the same magnification, an enlargement rate o... | 08/05/2008 |
| 7375857 | Print proofing with color and screen matching A proof generation method is disclosed for proof printers. The method includes receiving halftoned primary color print data to be printed on a target halftone printing press. This halftoned primary color print data has been produced by a first halftoning technique, ... | 05/20/2008 |
| 7365881 | Halftone dot-growth technique based on morphological filtering A method for converting an original halftone bitmap image to a color converted halftone bitmap image. A set of asymmetrical morphological filters is provided. The original halftone bitmap image is segmented into blocks and for each block: apply the set of morphologi... | 04/29/2008 |
| 7359092 | Picture image input method A picture image input method includes inputting a picture image of an object as a picture image signal. A histogram of a frequency with respect to brightness information of the picture image signal is created. A first brightness is created, which is a maximum bright... | 04/15/2008 |
| 7355159 | Image scanner and method for detecting a defect in an image to be scanned Image data in an image scanner is examined to determine whether lines (light or dark) are present in the image data. By examining whether the lines are present in image data for multiple colors, and whether calibration gains for corresponding photosensors are normal... | 04/08/2008 |
| 7355744 | Image processing method for superimposing high-resolution character data on low-resolution image data 600 dpi binary character shape data is created from 600 dpi character data inputted by a PC and written sequentially to a memory. The 600 dpi character data inputted from the PC and 300 dpi image data are stored as 300 dpi 8-bit graphics data. Next, 600 dpi 8-bit mu... | 04/08/2008 |
| 7349125 | Application specific integrated circuit (ASIC) in the form of a printer processor A processor is provided for a printer. The processor includes an address, data and control bus. An expander unit is coupled to the bus and is configured to decompress a bi-level black layer of a page to be printed. A decoder unit is coupled to the bus and is configu... | 03/25/2008 |
| 7333136 | Image processing apparatus for carrying out tone conversion processing and color correction processing using a three-dimensional look-up table When tone conversion processing and color correction processing is carried out on image data obtained by a digital camera, processed image data enabling reproduction of a high quality image can be obtained. A 3DLUT for carrying out the tone conversion processing and... | 02/19/2008 |
| 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 |
| 7319547 | Color printer calibration A method of determining substrate and ink compatibility includes providing a test pattern having a range of ink loading levels and including test features corresponding to at least one of text and graphics; identifying a substrate; identifying an ink set; printing t... | 01/15/2008 |
| 7315402 | Image forming apparatus and method for selecting an optimal image space frequency for an output image An image forming apparatus includes an image forming device configured to form an output image using at least two or more image space frequencies and an image size acquisition device configured to recognize a size of the output image. A switching device is configure... | 01/01/2008 |
| 7315398 | Multi-level error diffusion with color image data A method for processing color image data to generate multi-level image data with arbitrary output levels and arbitrary level spacing. The method identifies a gray level spacing for each of a first and second color separation pixels and scales the gray level for each... | 01/01/2008 |
| 7312898 | Transformation of an input image to produce an output image An input image is transformed to produce an output image. First pixels occurring at edges within the input image are detected. Second pixels that are part of text within the input image are also detected. The first pixels and the second pixels are combined to produc... | 12/25/2007 |
| 7307760 | Raster image path architecture A raster image path architecture having the capacity for supporting the rendering and output of a device-independent grayscale raster image, while also offering the capacity for supporting the rendering and output of a device-dependent binary raster image, thus offe... | 12/11/2007 |
| 7301671 | Method for calibrating a color marking engine for halftone operation Methods are described for calibrating a virtual printer including a plurality of color marking engines. The methods include printing a test pattern on one of the marking engines, the test pattern including a plurality of test patches, each test patch including corre... | 11/27/2007 |
| 7295348 | Processor for image processing, method of processing image using the same, and printer incorporating the same There is generated a virtual tile set which virtually covers color planes of an original image without any clearance or overlap by combination of Penrose-type virtual tiles to be non-periodically provided on the planes. The respective tiles are subjected to raster c... | 11/13/2007 |
| 7292260 | Image forming apparatus and image forming method An image forming apparatus records an image on a photosensitive material by controlling a light emission amount from a plurality of light emission elements that each emit light in accordance with a supplied light emission control signal. The apparatus has a control ... | 11/06/2007 |
| 7292374 | Method and apparatus for image processing capable of efficiently performing a gray-scale correction A novel image forming apparatus which makes gray-scale by performing at least one of operations including a manipulation of a plurality of dots arranged in a form of matrix, a single-dot-based density adjustment, or a single-dot-based size adjustment, includes a dot... | 11/06/2007 |
| 7278698 | Liquid ejection apparatus, liquid ejection head thereof, and liquid ejection method A liquid ejection apparatus includes a driving signal generating section which generates plural driving signals each having at least one or more driving pulses; a driving pulse selecting section which selectively combines the driving pulses of the driving signals wi... | 10/09/2007 |
| 7268916 | Digital image sharpening system A system and method for sharpening a digital image (38) having one or more image parameters, for printing with one or more print parameters, and for viewing at one or more viewing parameters, the method comprising the steps of preparing sharpening radius info... | 09/11/2007 |
| 7259888 | Image file bit depth expansion and subsequent manipulation The present invention addresses the reformatting of a digital “ready to print” data file into a continuous tone (32 or 24 bit) file whereby discrete values in the tone range are uniquely assigned to specific binary combinations. The purpose for this transform is... | 08/21/2007 |
| 7255413 | Method of adjusting printing resolution to avoid conditions of poor pen performance in an inkjet printing system, and systems Exemplary embodiments of the invention include methods of adjusting the print resolution of an inkjet printhead having a region of poor performance such that printing occurs outside the region of poor performance. Exemplary embodiments also include systems utilizing... | 08/14/2007 |
