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7440144 Image input/output apparatus  
An image input/output apparatus having a scanner unit disposed at an upper stage of an apparatus body and a liquid jet recording unit installed at a lower stage of the apparatus body includes a...
7417766 Calibration of color devices  
A method of adjusting a non-black primary color value including determining first, second and third portions of the non-black primary color value; determining an adjusted first portion using a...
7411697 Color conversion device  
During the device link processing, an original lookup table LUT 0 is modified into a modified lookup table LUT 1 so that achromatic color value sets B2 a will be associated with all the...
7394566 Calibration of color devices  
A method of adjusting a non-black primary color value including determining first, second and third portions of the non-black primary color value; determining a first contribution using a first...
7391533 Image processing method, image processing apparatus and strage medium  
An image reading apparatus is provided which includes a contact image sensor comprised of a plurality of sensor chips arranged in series, an analog image processor for processing an analog image...
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...
7375849 Balancing grays on color printers  
A gray balancing technique wherein gray balancing curves are determined by interpolating the primary color data values of color samples to determine discrete combinations of primary colors that...
7342685 Constraint correlation for computer to plate inkjet system  
Printing masters are produced by use of an inkjet printing system. The smallest halftone dot size which can be printed by the inkjet printing system is larger than the size of a pixel of the...
7327492 Image processing device and image processing method  
In a black character detection processing, RGB data read from a line buffer is converted into YIQ data. For a subject pixel, a subject area centered on the subject pixel is set, and a judgment...
7310167 Color converting device emphasizing a contrast of output color data corresponding to a black character  
A color converting device converts input CMYK data into output color data in a predetermined different format. The color converting device comprises a contrast emphasizing unit emphasizing a...
7304767 Color processing method, storage medium, color processing apparatus, color transforming apparatus, and image forming apparatus  
A regulated black colorant amount calculating section calculates a corresponding regulated black colorant amount from the L*a*b* of a plurality of typical color signals in a partial color gamut,...
7298527 Image forming apparatus and its control method, and computer program  
Input print data can assume one of a RGB color space, CMYK color space, and Gray color space. When graphic arts are principally to be printed, data of these color spaces is converted into CIE Color...
7295341 System for processing monochrome and full-color digital image data  
In a system for processing full-color image data, such as within a digital color printer or copier, a four-channel architecture is used. Three of the channels handle image data relating to primary...
7274818 Image forming apparatus  
A CPU determines whether a generated low-level drawing command is associated with drawing of a gray object and a color value of the gray object is greater than a determination value. If the...
7274489 Image forming apparatus and method of controlling the apparatus  
One processing section 131 executes a process of generating image data K representing a black image on the basis of the image data Y, M, and C, and sequentially executes a process of removing...
7259893 Methods and apparatus for gray component replacement blending  
Color processing methods and apparatus are provided that blend the gray component replacement (“GCR”) level of arbitrarily-specified input color data with an estimate of the GCR level of an...
7236265 Image reading apparatus, image forming system, image reading method, and program therefor  
An image reading apparatus includes an imaging unit which has a plurality of channels and which, for the channels, outputs effective signals output from photo-receiving sections for receiving light...
7206100 Image processing method and apparatus  
It is difficult to adjust a black plate while maintaining accurate color reproduction in a color printer that forms an image using C, M, Y, and K color agents. Upon generating a conversion...
7187409 Level difference correcting method and image pick-up device using the method  
An OB level difference is calculated from the luminance signal levels of at least two frames which are exposed for proper exposure time and for exposure time different from the proper exposure...
7110140 Methods and systems for undercolor reduction  
Undercolor reduction is performed to a color image that is to be marked to reduce an amount of marking material used to mark underlying colors in overmarked pixels where a top color is marked over...
7102787 Image reading apparatus  
An image reading apparatus comprises a correction coefficient determining circuit 4 for determining a correction coefficient per each bit of white reference data in a main scanning direction...
7088470 All-device-space automatic black replacement  
A direct device-space-to-device-space transform adjusts the amount of actual black ink, to avoid highlight and midtone granularity in incremental printing—but with no need for translation into...
7085009 Image processing apparatus and method  
This invention provides an image processing apparatus which simplifies the circuit arrangement required for edge emphasis correction. For this purpose, the apparatus has a first color conversion...
7065247 Apparatus for and method of graphics imaging  
The printer's page description contains a contone layer and a black layer. The black layer is conceptually above the black layer and is composited over the contone layer by the printer. The print...
7046393 Color space transformation with black preservation for open color management  
An open color management system allows any of a plurality of input color devices to share data with any of a plurality of output color devices. The color management system includes a networked...
7012714 Color processing method, and system with coverage restriction  
The invention provides a color processing method that is capable of improving the color reproduction accuracy by calculating an adequate amount of black component (referred to as K) with...
7009732 Method of producing from a first image data set, a second image data set matched to a real process, and a 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...
6995881 Image processing method and program capable of reducing graininess  
To provide an output image of high quality with no graininess produced. An image processing method for controlling a starting point which produces a black component between vertices showing a...
6985257 Job processing apparatus  
A printing control apparatus performs print processing by sequentially spooling print data received from a data processing apparatus via a predetermined communication medium in units of a job and...
6985255 Image communication apparatus and its control method  
If a color image is converted into a monochrome image and is sent when the receiver does not have color reception performance, the monochrome image is sent against user's intention. Hence, when...
6980327 Image processing apparatus  
In an image processing apparatus, a first recognition section recognizes a black character portion and a color character portion in CMY color signals input from a color conversion section, and...
6956672 Method for mixing inks for high fidelity color printing  
A computerized method for mixing inks to facilitate high fidelity color reproduction for printing includes the steps of using a theoretical printer model to establish relationship between the...
6924819 Image processor  
An image processor includes: a color conversion unit for converting an input signal to color signals of at least four colors; a gamma correction unit for performing gamma correction on the color...
6917445 Image data conversion method  
Input image data Ki for the black color component is divided into distribution data Tc, Tn, Ty, and Tk for the four color components C, M, Y, and K. The distribution data Tc, Tm, and Ty for the...
6906827 Color image processor  
In a color image processor for converting a RGB input image data into a CMYK image output data, it is determined whether a data format of the input image data is a non-picture image format or a...
6897989 Black reference data calculation method and image reader  
A light source is turned off (S 101 ), incidence of light on a line sensor is shut off, and the output value of an electric signal output from each of pixels of the line sensor (S 102 ). Since the...
6891649 Method of and apparatus for generating color conversion table and apparatus for generating proof using color conversion table  
For converting color data to be processed by a first device into color data to be processed by a second device, using a color conversion table, a constraint condition is set between the color data,...
6879417 Color image processing apparatus that performs color conversion processing  
When a first mode is designated, an RGB image signal obtained by reading an image is compressed, decoded and stored. After that, the resultant signal is converted into a CMYK image signal on the...
6812957 Image sensing module outputting color signals or monochrome signals depending on mode of operation  
An image preprocessing apparatus, which processes image signals of an image of a scanned object, includes an image sensing module, a multiplexing unit and an analog signal processor. The image...
6781714 Color image processing system and method  
The present invention provides a color image processing system for processing drawings at high speed while reproducing color tone with fidelity. The color image processing system includes a digital...
6778300 Black generation for color management system  
Transformation of CMYK source color data from a source device into CMYK destination color data for rendering by a destination device, in a case which the “K” channel of the CMYK source color...
6765694 Color image processor  
The color image processor in accordance with the invention has a raster circuit 1 for receiving data about an image of multiple gray levels of plural colors, an UCR/BG circuit 2 for decomposing...
6714321 Smoothing calibration files to improve reproduction of digitized images  
A method, system and computer article are presented for smoothing an image calibration signal in order to smooth a reproduced signal, and to identify the presence of any remaining spikes or other...
6693731 Image processing apparatus and method  
An image processing apparatus having a first black generating unit for generating a black component from input image data of signals representative of a plurality of color components, a color...
6574010 Image processing apparatus and method  
An image processor includes an input unit which inputs color image data, and a color correction unit which effects under color removal processing and black generation processing on the color image...
6483606 Error diffusion on moderate numbers of output colors  
A method of error diffusion selects colorants, from a plurality of colorants defining a color space, to obtain an actual color which represents a desired color for respective pixels. The actual...
6466332 BLACK COLOR GENERATION AMOUNT DETERMINING METHOD IN BLACK PRINTING, A BLACK COLOR GENERATION AMOUNT DETERMINING APPARATUS IN BLACK PRINTING, A MEDIA HAVING RECORDED THEREON A BLACK COLOR GENERATION AMOUNT DETERMINING PROGRAM IN BLACK PRINTING  
In order to perform black printing in a color space for printing approximately equivalent element colors such as CMY, a CPU system multiplies an undercolor amount CMYmin which is a common minimum...
6426809 Image transmitting system and image transmitting method  
Input image information undergoes color conversion processing in a color conversion section 1 , then is separated into first piece of image data, second piece of image data, and selection data in...
6412898 Ink volume reduction system for an ink jet recording apparatus  
An image processing apparatus which includes an image signal input device for outputting a first image signal including at least three signals corresponding to cyan, magenta and yellow,...
6400468 Smoothing calibration files to improve reproduction of digitized images  
A method, system and computer article are presented for smoothing an image calibration signal in order to smooth a reproduced signal, and to identify the presence of any remaining spikes or other...
Matches 1 - 50 out of 201 1 2 3 4 5 >