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Class 358/3.23 - Look-up table for image processing or print attribute data (e.g., threshold value, print element property)


Subclass of Class 358 - Facsimile and static presentation processing
Definition: Subject matter wherein a look-up table stored in memory
No. of patents: 263
Last issue date: 05/22/2012


1              
NumberTitleIssue Date
8184341Image reading apparatus, image reading method, and storage medium
An image reading apparatus includes a document feeding unit, a reading unit, and a control unit configured to operate in a first reading mode in which the control unit causes the reading unit to move to read the document while holding the document in a stationary st...
05/22/2012
8144366Populating multidimensional look-up tables with missing values
Values at nodes of a LUT which is arranged as a rectangular grid of cells are populated, wherein the populated values model an underlying process that transforms from a first color space to a second color space, and some of the cells of the LUT are completely inside...
03/27/2012
8139268Image processing apparatus and image processing method of generating monochrome image data from two color components
A color document is scanned using sensors of two color components, and monochrome image data is generated by performing a color conversion process on color image data made up of two color components obtained through the scanning. ...
03/20/2012
8130416Image forming apparatus, image forming method, computer program, and recording medium
An image processing method is applied for recording an image on a recording medium using a plurality of color materials including a chromatic material and an achromatic material. A total amount of recording of the chromatic material is smaller than a total amount of...
03/06/2012
8049933Copy-forgery-inhibited pattern image generation method and image processing apparatus
A combination of a latent-image pattern which forms a latent-image part and a background pattern that forms a background-image part is determined so that the latent-image part and background-image part have equal print densities. The determined latent-image pattern ...
11/01/2011
8023156Image output color management system and method
Disclosed is an image color management system and method for controlling an image output device. The method for controlling the image output device comprises generating an image output device profile LUT (look-up-table) characterizing the color profile of the image ...
09/20/2011
8014033Image output color management system and method
Disclosed is an image color management system and method for controlling an image output device. The method for controlling the image output device comprises generating an image output device profile LUT (look-up-table) characterizing the color profile of the image ...
09/06/2011
7869096Table creation method, table creation apparatus, storage medium, and program
A distortion of a table which causes generation of a pseudo contour is removed. For this, there is disclosed a table creation method of creating a table for performing color separation into coloring material colors in an image forming apparatus, comprising the steps...
01/11/2011
7787151Tone setting for monochrome image using ink color diagram
A color tone setting window 100 that includes an ink color circle 110 is displayed in order to set a color tone of a monochrome image. By specifying a point Pcc in the ink color circle 110, intensities of color components representing three chro...
08/31/2010
7719723Exposed image input device, printer apparatus, and image data input control program product
To print on the front side, image data saved in an image memory is read pixel by pixel along a main scanning direction x. Correction data for each block of pixels then is referred to, and the image data is read while being shifted in a sub-scanning direction y by a ...
05/18/2010
7710607Image processing method and apparatus
The generation of an N-dimension look-up table used (N≧2) in conversion processing of input image data includes acquiring a value of the input image data for every channel corresponding to a respective dimension of the N-dimension look-up table by analyzing the in...
05/04/2010
7602532Highly accurate and rapid scanning by a simple scanning device and color correction technology for a printing device
A scan target is scanned to acquire scan data that includes tone values for each color component in a plurality of pixels; there are acquired scan profiles indicating association relationships between the aforementioned tone values and color values, which profiles s...
10/13/2009
7593136Digital image processing system and digital mammography system
A digital image processing system includes: a memory for storing a gradation conversion table which correlates inputted image signals to output gradation values in the output device; and a gradation conversion unit for converting an inputted image signals that indic...
09/22/2009
7586651Image formation with priority selection of correction table based on match with print sheet setting information
An object of this invention is to reduce the work load of generating a correction LUT used to correct the tint. To achieve this object, an image forming system according to this invention has the following arrangement. That is, in an image forming system in which an...
09/08/2009
7576893Correlated secondary TRC calibration method
This invention is a method of producing a set of TRC's for a color printer's secondary halftone screens that is correlated with the printer's primary halftone screens. The method makes use of the printer/screen characteristic data that is normally gathered during sc...
08/18/2009
7570395Image display device, method of driving image display device, and electronic apparatus
An image display device in which one dot is displayed using M (M is an integer larger than 3) sub-pixels having different colors and being disposed adjacent to each other in a vertical direction or horizontal direction, a ratio of a length of the sub-pixel of the on...
08/04/2009
7554698Robust document boundary determination
The present application discloses a system for determining document boundaries inc1uding an image sensor, a backing opposed to the sensor, and an image processor. The image processor analyzes candidate edges imaged from a document between the sensor and the backing....
06/30/2009
7525690Image processing device, image processing method, and image processing program
The image processor has a halftone processing unit which converts the grayscale input data of pixels into image regeneration output data corresponding to a dot size of pixels, and a lookup table including a plurality of gamma tables storing image regeneration output...
04/28/2009
7515304Smoothing of dispositions of lattice points for creation of profile
In order to create a profile that associates lattice points defined in an equipment-dependent color space with lattice points defined in an equipment-independent color space, a reference profile that associates a plurality of lattice points in the equipment-dependen...
04/07/2009
7508550Image correcting apparatus and method, and image correcting program, and look-up table creating apparatus and method, and look-up table creating program
A bright luminance value, a dark luminance value, and an average luminance value relating to a face image portion included in an image represented by fed image data are calculated in calculating circuits. Further, a target bright luminance value and a target dark lu...
03/24/2009
7499199Image processing circuit, image display apparatus, and image processing method
Aspects of the invention can provide an image processing circuit for gray scale correction, an image display apparatus, and an image processing method that allow reduction in the storage capacity needed for storing correction characteristics data without increasing ...
03/03/2009
7492484Image signal processing method and apparatus for limiting amount of toner stick
Even when an image signal is converted into an image signal with a limited amount of toner adhesion, the gradation is prevented from changing rapidly near the limiting value and therefore the image quality is prevented from deteriorating. An amount-of-adhesion conve...
02/17/2009
7443544Accelerating color conversion using a temporary palette cache
A method and device for accelerating a color conversion process that converts input image data corresponding to a first color space to output image data corresponding to an output color space. A temporary cache stores color information in an array, and performs a co...
10/28/2008
7443537Methods and apparatuses for printer recalibration
A test pattern printed by a printer is assessed—without colorimetric equipment—to provide data used in recalibrating the printer. The assessment may be made by an unskilled operator, and can include discerning whether a particular pattern is visible in the print...
10/28/2008
7440611Method for image characterization using color and texture statistics with embedded spatial information
A method for characterizing an image where a number of test areas of predefined shape and size are located on the image. The color or the texture of the image over each of the test areas is quantified. The image can be characterized by statistical descriptions of th...
10/21/2008
7433081Color conversion for printers
A plurality of color conversion profiles are prepared for each of plural types of color conversion profiles. One profile is selected for each of the color conversion profile types according to the printing mode used when printing, and color conversion is performed b...
10/07/2008
7433080System and method for conversion of duotone images for display
A method for processing an image. The method includes receiving an image having image values and described in a first color space and determining the image color space from a received image. Image values in the first color space are associated with values in a secon...
10/07/2008
7433102Reproduction color prediction apparatus and method
A primary color dot gain correction unit corrects the spectral reflectance of each of a plurality of color agents on the basis of the dot quantity set for each color agent. An initial estimated value calculator estimates a mixed color by the KM theory using spectral...
10/07/2008
7430060Fast low-memory paper color suppression algorithm
A fast, low-memory-requiring, adaptive algorithm for determining and correcting for page background color generally involves quantizing the color component values of the pixels of the scanned page, dividing the scanned color space into a set of bins, and assigning e...
09/30/2008
7417763Data processing apparatus and method, and image processing apparatus
A method of reconstructing the content of an ink color decomposition table is available as a method calibrating second- and higher-order colors. However, it is difficult to reconstruct the ink color decomposition table while maintaining a limitation upon the overall...
08/26/2008
7403307Method of selecting inks for use in imaging with an imaging apparatus
A method of selecting inks for use in imaging with an imaging apparatus includes determining a maximum usage of a diluted ink for use in conjunction with a saturated ink based on visual perception characteristics relating to a combination of the diluted ink and the ...
07/22/2008
7403305Image processing system, apparatus and method for updating a printer profile based on comparison of previous and current measurements of color chart
A feature amount converting unit performs a color conversion of an input data. A history storage unit stores history information about a measurement of a color chart including conversion values of measured values of the color chart. An arithmetic unit compares the h...
07/22/2008
7397588Generation of hue slice table for gamut mapping
A table representing a color gamut for a device for use in a color management system where colors are represented in a color appearance space comprises data representing a collection of hue slices through a boundary surface of the color gamut. The collection of hue ...
07/08/2008
7385731Method 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
7385730Image 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
7379204Image processing apparatus and method, and image processing system
If only a specific color and its nearby colors of image data are adjusted, density discontinuation occurs in the image as a whole. If masking is performed to avoid this problem, the adjustment range cannot be bounded, so the processing time increases. On an adjustme...
05/27/2008
7375855Image processing apparatus for converting image data by unit of multiple pixels
The technique of the invention joins a preset number of adjacent pixels into a unit and collectively converts input image data of each unit into dot data. Here the image data is expressed by tone values of respective pixels constituting an image, and the dot data re...
05/20/2008
7375852System 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
7369276Multi-level halftoning providing improved texture uniformity
A method for multi-level halftoning an input digital image to form an output digital image which includes a multi-level error diffusion halftoning process incorporating periodic dither signals whose amplitudes are adjusted as a function of the error-diffusion textur...
05/06/2008
7369277Image processing apparatus, drawing processing method, and computer program
A drawing instruction processor refers to a bit map line table that shows whether the bit arrays in the row unit are the same in the order of concentrations. The drawing instruction processor decides whether dither patterns to be used for the adjacent specified draw...
05/06/2008
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