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| Number | Title | Issue Date |
| 8189237 | Distributing a SRE codes in halftone pixels pattern in supercell A method is employed that represents patterns using a super resolution encoding method that distributes the code value among adjacent pixels. One or more blocks are created, wherein each block is comprised of a plurality of bits, the height of the block is equal to ... | 05/29/2012 |
| 8120815 | Image processing method and image forming device for generating profiles for color reproduction An image processing method is provided. The image processing method includes: generating profiles for color reproduction, classified for each of recording papers, from at least one of particular characteristic data of the each recording paper, which is generated on ... | 02/21/2012 |
| 8049931 | Image forming apparatus and image forming method for setting a margin region, a density change region, and regular density region An image forming apparatus for forming an image on a transfer sheet based on image data, comprises an operating section to determine a setup about a margin region on which an image is not formed at an edge portion of the transfer sheet, a control section to determin... | 11/01/2011 |
| 8049932 | Image forming apparatus and image density control method therefor An image forming apparatus which having a plurality of image processing modes, that is capable of accurate density gradation control without performing output of any patch image to a recording medium in all the image processing modes. A first correction parameter co... | 11/01/2011 |
| 7936481 | Method, system and program for forming an image A high-quality monochrome photographic image is formed using a high-resolution color ink-jet recording apparatus. When a monochrome mode is selected, density signals are produced such that they include at least one density signal corresponding to a chromatic color m... | 05/03/2011 |
| 7924466 | Image processing device, and medium employed for the same An image processing device is capable of generating single-hue image data from color image data, which include at least two records of a first area to be filled with a first color based on first hue component data and a second area to be filled with a second color b... | 04/12/2011 |
| 7746501 | Method and device for compressing image data A method for compressing image data includes a first step for dividing image data into predetermined areas and determining a representative value about density of pixels in each area, a second step for determining density of pixels included in each area by using the... | 06/29/2010 |
| 7729015 | Methods and apparatuses for controlling print density Multiple input patches are received on an output media, which patches are characterized by print density representing a document processing system's response to different input grayscale values over a potential response space. Values associated with the print densit... | 06/01/2010 |
| 7697168 | Image processing apparatus and method for generating bitmap data and attribute information from a raster data In order to improve print image quality, attribute information is generated for each pixel of a bitmap image generated according to a drawing command, and the bitmap image and attribute information are written in a memory. However, when this is done, data amount to ... | 04/13/2010 |
| 7663783 | Image-processing device processing image data by judging a detected and expanded medium-density field as a non-character edge field An image-processing device applies a predetermined process to input image data so as to output the processed image data. The image-processing device comprises a medium-density detection unit, an expansion unit, and a non-character edge judgment unit. The medium-dens... | 02/16/2010 |
| 7656558 | Image processing system, image processing device, image output device, and method and program product therefor A representative gradation value is set collectively for each pixel group of several pixels each, and then the representative gradation value undergoes multilevel halftoning. From the multilevel halftoning result value obtained in this way, the presence or absence o... | 02/02/2010 |
| 7623269 | Image forming apparatus, image processing apparatus and image forming/processing apparatus An image reading unit reads a paper formed with a predetermined pattern in a state folded into a predetermined shape, and a recognizing unit detects the shape of the paper based on the obtained image data. The recognizing unit reads the process instructing informati... | 11/24/2009 |
| 7619779 | Method for judging achievability of density correction of image and printing apparatus A method for judging achievability of density correction of an image, the density correction being performed by a printing apparatus during printing of the image, the printing apparatus including a plurality of nozzle groups each consisting of a plurality of nozzles... | 11/17/2009 |
| 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, apparatus for producing the color separation, and the threshold matrix Threshold matrixes for a C-separation and an M-separation of main colors are used to convert a continuous-tone image subjected to color separation into dot patterns for the C-separation and the M-separation. The dot patterns are binary images in which no screen ruli... | 11/17/2009 |
| 7570393 | Method for calibration of a printer A method for calibrating a first image processing apparatus at a first location with a control image processing apparatus at a second location. The method comprises obtaining a plurality of individual exposure levels and plotting them against time creating a deviati... | 08/04/2009 |
| 7561307 | Image processing method and device using dither matrixes with size and density being inversely related to a unit images distance to the center of the dither matrix An image processor includes: memory storing data including pixel values; memory storing dither matrixes corresponding to dot size and having cells with individual threshold values; a generator generating quantized data including dots corresponding to cells by compar... | 07/14/2009 |
| 7545538 | Image-processing apparatus, image-processing method and recording medium In an image-processing apparatus, a digital image signal is stored in a memory, and a memory access control part entirely manages all accesses to the memory with respect to the digital image signal. An image processing part converts the digital image signal stored i... | 06/09/2009 |
| 7502142 | Image data processing system In an image data processing device, a notice pixel is selected from among a plurality of pixels constituting an image. A specified direction in which ink ejected on a recording medium would bleed by a relatively large amount on the recording medium is obtained. Then... | 03/10/2009 |
| 7436545 | Method of forming image, image forming apparatus, and program for carrying out the method If an ink for a particular color (for example, red) having an excellent color developing characteristic is used in addition to inks for three primary colors of subtractive color mixture, the high color reproducibility is to be maintained for a long period. To accomp... | 10/14/2008 |
| 7385730 | Image processing apparatus, image processing method, and printing apparatus and printing system using the image processing apparatus In an apparatus for performing printing using a color ink-jet head having a plurality of ink-discharge-port strings corresponding to ink materials having different color tones, a high-quality image having excellent gradation can be recorded, while reducing the cost ... | 06/10/2008 |
| 7375853 | Image processing apparatus and method A separating unit determines, for an image data, whether there exists black data, and generates density data from the black data when the black data exists, and generates color data from data other than the black data. A multinarizing unit converts the color data in... | 05/20/2008 |
| 7362472 | Color error diffusion A method for multi-toning an input digital image having input pixels with two or more color channels to form an output digital image having modified output levels. The method includes producing an error signal for each color channel, combining the error signals to p... | 04/22/2008 |
| 7359091 | Multi-bit output sampled threshold array halftoner Xerox Reference No. D/A0639A system and method for improving xerographic halftoning by magnifying a threshold array, interpolating the in-between values, enabling multiple thresholds to be accessed simultaneously and presented to multiple comparators, to cause multi... | 04/15/2008 |
| 7336275 | Pseudo random number generator and method A pseudo random number generator that generates a plurality of intermediate values, where each successive intermediate value is based, at least in part, on one of the succeeding intermediate values, where a final value based on a subset of the plurality of intermedi... | 02/26/2008 |
| 7327380 | Apparatus for printing a multibit image The invention relates to an apparatus for printing a multibit per pixel image (10) from a halftone binary digital bitmap having pixels having a multibit per pixel image memory for receiving the multibit per pixel image; a lookup table (16) external to ... | 02/05/2008 |
| 7327503 | Image correction method in inkjet recording apparatus A method of preventing image degradation due to nonejecting nozzles of a recording head is provided for an inkjet recording apparatus for recording images by ejecting ink from plural nozzles disposed in the recording head. The method according to the present inventi... | 02/05/2008 |
| 7324238 | Image processing apparatus, method of setting tonal gradation conversion characteristics, and computer program Four test patterns are concurrently displayed on a display of a computer. The test patterns include respective backgrounds and contrast areas. The test patterns, different from each other in pixel value, have identically shaped contrast areas. The contrast between t... | 01/29/2008 |
| 7322665 | Inkjet printing system In an inkjet printing apparatus which generates satellites droplets, problems in an image attributable to the satellites are mitigated as far as possible. For this purpose, each parameter is adjusted to satisfy a relationship such that the distance between positions... | 01/29/2008 |
| 7307754 | Density control method for image control apparatuses and image forming apparatus capable of executing the method There is provided an image forming apparatus which is capable of quickly performing measurements required for obtaining a proper image density. The image forming apparatus having a plurality of image forming apparatuses performs an image density adjustment control p... | 12/11/2007 |
| 7286266 | Printer and image processing device for the same A printer is capable of expressing halftones by forming halftone spots in cells each having a plurality of pixels by irradiating an exposure beam. The printer comprises a halftone processing section for converting M-bit image data into N (M>N)-bit drive pulse width ... | 10/23/2007 |
| 7286267 | Method for rendering an image comprising multi-level pixels A halftoning method utilizes staged, overlapping pixel intensity growth in a halftone cell in rendering a halftone image with multi-level pixels. ... | 10/23/2007 |
| 7277103 | Image display device, image display method, and image display program The invention provides an easy and simple method of converting the resolution of image data, which is capable of generating the high-resolution image data without incongruity, does not make a circuit in the display device complicated and does not increase the power ... | 10/02/2007 |
| 7274490 | Image forming apparatus with control of maximum output of colorant In an image forming apparatus which forms a color image by superposing cyan, magenta, yellow and black toners on a recording medium, a circuit to limit image signals is provided immediately before a gamma correction circuit which corrects an output characteristic in... | 09/25/2007 |
| 7262879 | Method for screening of halftone images A method of making second generation halftone images lacking visible interference, includes selecting an image which has been halftoned, and determining the number of tone levels required for each pixel of the halftoned image, A halftone cell size is identified, and... | 08/28/2007 |
| 7262882 | Distribution curve generating device A plurality of color signals indicative of a plurality of color patterns are processed based on a first distribution curve to distribute the original color signals into color signals for normal ink and color signals for light ink. Then, the plurality of color patter... | 08/28/2007 |
| 7239422 | Color gamut mapping using a cost function A method of generating a reduced color gamut boundary for a color output device using three or more colorants, wherein the amount of each colorant is controlled by a colorant control signal vector, including determining a forward device model for the color output de... | 07/03/2007 |
| 7233414 | Image recording apparatus and method, image reproducing apparatus and method, and recording medium on which image processing program is recorded The present invention is intended to record image data having a wide dynamic range is a file together with image data having a narrow dynamic range. First, an image recording apparatus separately gradation-converts image data to be recorded into primary data having ... | 06/19/2007 |
| 7230741 | Optimum non-uniformity correction for imaging sensors The present invention relates to a method of generating intensity measurement correction coefficients for a pixel in a focal plane array of an optical sensor, wherein the correction coefficients are used to correct an intensity measurement generated by the pixel res... | 06/12/2007 |
| 7218420 | Gray level halftone processing An image processing method and apparatus for generating a gray level rendered pixel value that has been subjected to a halftoning process. In the method and apparatus a gray level pixel value of the pixel to be rendered by the halftoning process is provided as one i... | 05/15/2007 |
| 7190490 | Method for correcting unadjusted threshold arrays for halftoning by use of parameterized transfer functions that generate adjusted threshold arrays at run time A printer that stores a minimal number of unadjusted stochastic threshold arrays in non-volatile memory, in which the unadjusted threshold arrays are used to generate adjusted threshold arrays at run time by use of special parameterized transfer functions. The unadj... | 03/13/2007 |
