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| Number | Title | Issue Date |
| 7961366 | Color gamut modification and color mapping method and apparatus An image processing method according to the present invention achieves gamut mapping between devices having different color reproduction ranges in gamut compression, and enables good color reproduction without reversal of tonal change. An image processing method con... | 06/14/2011 |
| 7852532 | Image forming apparatus and image forming method An image forming apparatus including: an outputting section to output a chart which has a gradation pattern in a low-density area, the gradation pattern including patches, each of the patches having a density; a reading section to read-in the density of each of the ... | 12/14/2010 |
| 7729022 | Method for processing image A method for processing an image is provided. The method is to calculate the amount of original gray levels in a frame according to the original gray level difference between each pixel and an adjacent pixel thereof and adjusts the contrast of the frame according to... | 06/01/2010 |
| 7595921 | Increasing profile accuracy and accelerating profile creation When a profile to be referred to during conversion between different color systems is created, output color data that associates first and second color component data with their output colors is obtained, an interpolation function is generated based on the output co... | 09/29/2009 |
| 7580168 | Density-adjusting device that changes the gamma characteristics of regions of a copied image based on a difference value to a set of monotonous gamma correction curves In a set of non-reference gamma characteristics corresponding to a density adjustment value, a first region has first characteristics for converting input values to the maximum output value. A second region has second characteristics for converting input values to t... | 08/25/2009 |
| 7529006 | Image processing method, image processing apparatus, storage medium, and program for calculating first and second graduation-correction characteristics, and for reducing hue variations of a secondary color An image processing apparatus for forming an image using at least three color materials includes a first generation device for generating a plurality of patches of secondary colors composed of color materials of two different colors; a first measurement device for m... | 05/05/2009 |
| 7483187 | Method and apparatus of adjusting image tone and graphic user interface for the same An apparatus and method thereof adjust tonal characteristics of an image to a printer. The apparatus includes a storage unit storing a color correction scheme using a color gamma curve varying in accordance with variable values comprising locations of first and seco... | 01/27/2009 |
| 7436996 | Device, system and method of data conversion for wide gamut displays A method and system for converting color image data (data outputting from element 202) from a, for example, three-dimensional color space format to a format usable by an n-primary display (206), wherein n is greater than or equal to 3. The system (conv... | 10/14/2008 |
| 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 |
| 7433062 | Color image processing method and apparatus, and storage medium An image processing method for processing an input job in parallel using a plurality of color image output apparatus, includes developing input image data into bit map image data, using either of first and second modes. In the first mode, the input image data is dev... | 10/07/2008 |
| 7414598 | Apparatus and method for driving plasma display panel Disclosed herein are an apparatus for driving a plasma display panel in which the capability to represent the gray scale can be improved, and method thereof. The apparatus includes an inverse gamma control block for performing an inverse gamma correction process on ... | 08/19/2008 |
| 7397483 | Image data conversion using interpolation In tetrahedral interpolation suitable for data conversion implemented by digital computations, when the unit rectangular hexahedron is a regular hexahedron, no complicated multiplication is required, and the computation volume can be greatly reduced. However, when t... | 07/08/2008 |
| 7394929 | Digital picture image color conversion A computer method for transforming a sensor color space of a digital image to standard color space. The color pixels in the sensor color space digital image are grouped and multiplied by multiple color conversion matrices without amplifying sensor noise. Different c... | 07/01/2008 |
| 7385731 | Method and system for processing a multi-colour image A method and system are provided for processing digital multi-colour images for the reproduction thereof on a colour printing and/or copying system. Particularly, the printing and/or copying system is capable of complementary forming registered composite multi-colou... | 06/10/2008 |
| 7382382 | Display device conversion device, display device correction circuit, display device driving device, display device, display device examination device, and display method The liquid crystal display device inputs a signal, corrected by a correction circuit provided with a sigmoid inverse function generator, to a source driver. A sigmoid function which is an S-shaped function is used to approximate an input/output characteristic (appli... | 06/03/2008 |
| 7375852 | System and method for supporting a variety of color spaces in a computer operating system An application program may support multiple color spaces, such as Cyan Magenta Yellow blacK (CMYK) and Red Green Blue (RGB). Many computer operating systems have graphics drawing engines that only support RGB color space. For supporting non-RGB color spaces, the app... | 05/20/2008 |
| 7375854 | Method for color correction A method for color correction is provided. In this method, a plurality of groups of gray levels and luminance of light source of display device are respectively selected by color measurement system. The selected data of each color light are respectively calculated t... | 05/20/2008 |
| 7376268 | Image processing apparatus for transmitting image data to an external device The image data corresponding to an image is separated into areas corresponding to contents of the image. The image data in each of the area is subjected to an image processing specific to the content of the image. The image types are, for example, a character, a pho... | 05/20/2008 |
| 7372597 | Tonescales for geographically localized digital rendition of people In a method and system for processing a photographic image having lightness values, L*, representing one of the colorimetric values of an original scene, the photographic image is transformed. The transformed image has a gamma as a function of CIE 1976 L*, which inc... | 05/13/2008 |
| 7369272 | Accuracy of color conversion profile A method for determining lattice points to be referenced to prepare the correspondence defining data, said method including steps of prescribing a smoothness evaluation function which evaluates smoothness of arrangement of lattice points in the device-independent co... | 05/06/2008 |
| 7365755 | Black enhancement in perceptual gamut mapping The present invention provides for gamut mapping between a source device and a destination device, the destination device having a destination device black point with a hue, and the source device and the destination device being respectively characterized by a sourc... | 04/29/2008 |
| 7362894 | Image processing apparatus and method, recording medium, and program In an image processing apparatus, a sensitivity compensation unit converts a color-and-sensitivity mosaic image into a color mosaic image. A pixel-of-interest determination unit extracts local area information from the color mosaic image. An edge-direction detector ... | 04/22/2008 |
| 7360869 | Image processing and ink-jet recording apparatus for carrying out processing for reducing amount of ink delivered from recording apparatus to recording medium When image data output to an ink-jet recording apparatus for performing color recording using inks of a plurality of colors is to be processed, input image data is converted into data corresponding to colors of inks and gamma correction is applied to the data corres... | 04/22/2008 |
| 7362468 | Image sensing device and image processing method An image sensing apparatus comprising an image sensor that senses an image of a subject, a parameter setting unit that sets a parameter used for a predetermined developing processing, and an image processing unit that selects raw data from the image sensing unit or ... | 04/22/2008 |
| 7359571 | Method, apparatus and program for image processing Image processing is carried out accurately on image data obtained by a digital camera, for a high-quality reproduced image. Image data S0 is read and main part information M is acquired. Scene information H is obtained by inferring a photography scene based o... | 04/15/2008 |
| 7355606 | Methods and apparatuses for the automated display of visual effects Methods and apparatuses for the generation of visual effects according to the elapsed time for real time display. One embodiment of the present invention provides an automated mechanism for displaying visual effects (e.g., fade to or from a target color) through adj... | 04/08/2008 |
| 7356190 | Image area extraction method, image reconstruction method using the extraction result and apparatus thereof An image area of interest in an image file can be detected by a method with a relatively light processing load by making a determination using characteristics of a quantization table. Since spatial frequency information, chromaticity information, and a quantization ... | 04/08/2008 |
| 7339701 | Method for darkness correction of trapped pixels A method for correcting for edge defects caused by print characteristics of a print engine includes printing a set of actual color patches corresponding to a desired set of colors; defining an edge region and a uniform area region in each of the patches; for each co... | 03/04/2008 |
| 7336910 | Image forming apparatus with gamma conversion means The invention provides an image forming apparatus and an image forming method, capable of providing an image with little deterioration, even in case the image contrast has to be adjusted not for the purpose of image adjustment, such as for reducing the toner consump... | 02/26/2008 |
| 7336395 | Data conversion system, image processing and image forming apparatus Disclosed is a system of image data conversion, capable of setting conversion characteristics with more ease even for data having mixed image attributes, and of reducing the amount of data and the size of memory required. The conversion system includes processing el... | 02/26/2008 |
| 7330287 | Tone scale adjustment A method of processing data from a digital image to optimize the tonescale to a printer being used without operator intervention adjusts the gain and offset of the input image data to occupy the full range of the printer, adjusts the shadow and highlight regions of ... | 02/12/2008 |
| 7330286 | Apparatus, method and computer program product for providing output image adjustment for image files A CPU of a color printer performs gamma correction and a matrix operation M on an RGB color space image data derived by a matrix operation S. Using gamma correction value settings, the CPU performs gamma conversion of image data. Matrix operation M converts the RGB ... | 02/12/2008 |
| 7319787 | Automatic contrast enhancement A method of automatic contrast correction comprises providing digital image data, representing the data in the form of a brightness histogram, determining a measure of central tendency for said histogram, adding a shift value to the measure of central tendency to pr... | 01/15/2008 |
| 7319546 | Color management method A method of producing from a first device-dependent image data set, a second image data set matched to a real process, includes, by using inverse gamut mapping, transforming color values from the first image data set into color values of a device-independent color s... | 01/15/2008 |
| 7312799 | Visual determination of gamma for softcopy display Provided herein are teachings directed to calibrating an output device such as a color display, using a visual method of determining the gamma for the blue primary that is easier to perform and more consistent than methodologies employing a luminance-matching task. ... | 12/25/2007 |
| 7304768 | Image processing apparatus, computer readable medium storing program, image processing method, method for producing dynamic image and printer An image processing apparatus which performs correction processing on a dynamic image including a plurality of frame images for determining the correction value suitable for each of the frame images of the dynamic image including: a detector detecting change of scen... | 12/04/2007 |
| 7295705 | Image processing apparatus and method When one viewing condition parameter is applied to all pixels, a visual effect between a single color and a background expressed on a rasterized image cannot be reflected on a color matching result. To prevent this, when color matching using a human color appearance... | 11/13/2007 |
| 7289665 | Image processing device and image processing program An image processing unit of the present invention receives a first image, performs weighted addition on color information in the first image to generate a color component different from that of the color information in the first image, and outputs the generated colo... | 10/30/2007 |
| 7280260 | Color converting apparatus and color converting method for converting input image data into converted image data For each paper type, a plurality of two-dimensional excitation characteristics tables Ti are provided in one to one correspondence with a plurality of colors i. The excitation characteristics table Ti for each color i contains a plurality of sets of excitation-refle... | 10/09/2007 |
| 7277200 | Color Processing method and image processing apparatus In color matching among media having different white points or different black points, how to address gray balances among media poses a problem. To solve this problem, upon converting a colorimetric value onto a color space that connects profiles, gray-balance corre... | 10/02/2007 |
