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7450267 |
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...
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7447352 |
Method for abstracting histogram of HSV color
A method Abstract a histogram of HSV (Hue-Saturation-Value) colors from a color signal. The method includes receiving the color signal having a luminance component (Y) and chrominance components...
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7446902 |
Apparatus and method for converting color signal, and computer-readable recording medium for storing computer program for controlling the apparatus
An apparatus and a method for converting a color signal and a computer-readable recording medium storing a computer program for controlling the apparatus. The apparatus converts an input color...
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7443539 |
Color reproducing device
A multi-spectral camera is provided which includes an image pickup optical system which forms an image of a subject. A wavelength selecting device receives light beams from the image pickup optical...
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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...
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7433077 |
Gamut mapping between multiple boundary regions
Mapping color image data from a source color gamut to a destination color gamut, wherein the mapping includes identifying source color boundary regions in the source color gamut based on descriptor...
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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...
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7414755 |
Color quality assessment and color control during color reproduction
A process for color quality assessment and color control in a color printing process is provided. The process utilizes a test element array including several test elements is co-reproduced with an...
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7400430 |
Detecting and compensating for color misregistration produced by a color scanner
A method, computer program product and system for detecting and compensating for color misregistration. A black/white edge or a solid color edge on a target may be scanned. A black/white edge may...
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7382493 |
Image processing for optimal color density decomposition based on calculated graininess and equiluminance contours
Graininess and calorimetric values of color patches formed by an image generating system using dark and light colored recording agents are input to calculate equiluminance contours. Color density...
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7379209 |
Color separation of pattern color spaces and form XObjects
Systems and computer program products for performing color separation operations. In one aspect, a system creates a high-level representation of a graphical container as a separated element the...
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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...
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7372469 |
Image transforming method
The present invention provides a method for rotating YUV4:2:0 image in a digital display device, such as TV image system. A YUV4:2:0 image is separated to a Y division matrix and a U and V division...
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7369284 |
Image signal processing method, image signal processing device, and image signal processing system
A color image signal processing device having a high resolution and excellent color reproducibility even though the device comprises a one-chip color sensor. The data format for transmitting image...
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7365890 |
Color processing apparatus and method and image processing apparatus
As a method of calibrating colors other than primary colors such as secondary colors, the contents of an ink color-separation table are reconstructed. However, it is difficult to reconstruct the...
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7355750 |
Image processing apparatus, image processing method and image processing program
An image processing apparatus in which an appropriate color separation table is selected for an unexpected print medium. In plural color separation tables 108 , maximum total color-material color...
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7355737 |
Apparatus and method for two-color printing based on single color data
A printer 10 has a reception unit 28 for receiving print commands from a host 12 , and has print heads 64, 66 capable of printing multiple colors. A data processing part 24 applies a...
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7352893 |
Representing extended color gamut information
A computer-readable medium of one embodiment of the invention is disclosed that has a data structure stored thereon to represent extended color gamut information for a pixel. The data structure has...
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7349135 |
Time multiplexed image data decompression circuit
A circuit which uses a compressor to divide each separation image into 8-line strips, and to independently compress each strip, a single decompressor to decompress two or more color image...
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7345793 |
Scan method
A scan method comprising a sensing photo module applicable in a scan apparatus for scanning a document is disclosed. The sensing photo module is equipped with photo sensors parallel to each other...
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7342687 |
Image reading apparatus and light source stability determination method
A scanner has an imaging device which is constituted by a cold-cathode tube, includes a light source for irradiating light to a reflection surface of a reference white plate and a plurality of...
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7339705 |
Apparatus for and method of making measurement on printed sheet
A printed sheet measurement apparatus initially captures images on a reference sheet and a printed sheet to store respective image data. Next, both of the image data are displayed on a display...
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7336819 |
Detection of sky in digital color images
A method of detecting sky in a digital color image having pixels is disclosed. The method includes identifying pixels from the digital color image representing an initial sky region; developing a...
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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...
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7333236 |
Method for the mapping of colour values of a colour image in the colour values of a highlight-colour image and corresponding print system
The invention relates to a mapping method, whereby color values of the color image to be mapped, represented in the RGB color space are mapped in the highlight-color color space, corresponding to a...
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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...
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7319545 |
Method and apparatus for calibration of a color printer
A method permitting an end user to recalibrate a color reproduction device. The color reproduction device includes a device for converting the native color values of the scanner into a device...
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7307766 |
Black and white image detection
A method and apparatus for classifying an input image as black and white or color is described. The method calculates a first ratio of a color pixel portion to a total pixel portion in the input...
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7307753 |
Color processing method, color processing device, storage medium, color processing program, and image forming apparatus
Receiving an object color signal and an input black colorant quantity associated with the object color signal, an equivalent output black colorant quantity calculating section calculates an...
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7301681 |
System and method for processing documents with four-line CCD sensor
An image forming apparatus includes a four line CCD which produces RGB data and K data that are read out selectably, and a selector which selects whether to output the RGB data that is provided...
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7298929 |
Image interpolation method and apparatus therefor
An image interpolation method and apparatus by which to quickly generate and display motion pictures using a small amount of data. An image input unit inputs a first image and a second image. A...
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7295355 |
Image reading apparatus
An image reading apparatus includes an image reading device having a plurality of solid-state image sensing device arrays arranged to be parallel to each other, the image reading device for...
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7286261 |
Color calibration color value correction
Correcting color values for color calibration is disclosed. A sensor measures a color calibration pattern output by a device, to color values for the patch. Corrective action(s) are then performed...
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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...
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7274496 |
4-line CCD sensor and image input apparatus using the same
A 4-line CCD sensor according to one embodiment of the present invention has a monochromic reading line sensor section and a color reading line sensor section. This 4-line CCD sensor is...
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7266237 |
System and method for a heuristics-based approach for determining a number of colors in an image
A method for determining a number of colors in a digital image includes receiving a digital image and determining a total number of pixels in the digital image. A proportion of the total number of...
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7265870 |
Colour separation method
Separation of a color into values for colorants in colorant space can be done easily when color correction and color separation are done in separate steps, where the color is defined as a set of...
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7242409 |
Interpolated color transform for changing color of an application user interface
A system and method for adjusting the color of an application user interface (UI). A UI allows a user to define hue and saturation values used to adjust first RGB values of pixels determining the...
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7228311 |
Creation method of table, creation apparatus, creation program and program storage medium
A method for creating and an apparatus for creating a four-dimensional or higher table. A dimension number m and an order n are set, and a permutation of a symbol of n elements and a selecting...
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7218428 |
Method of sequencing image data inside memory of optical scanning device
An image data sequencing method for a memory unit inside an optical scanning device. The image data sequencing method is particularly suitable for scanning a line of pixels with each pixel...
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7196817 |
Printing of digital images using reduced colorant amounts while preserving perceived color
A method for modifying an input digital image having an (x,y) array of image pixels, each image pixel having an input code value for each of four or more color channels, to produce a depleted...
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7193747 |
Table 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...
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7190487 |
Color conversion with hue straightening using multiple look-up tables and interpolation
A method of color conversion includes providing a first color domain input signal set having plural input signals; sorting the input signals of the first color domain input signal set according to...
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7190486 |
Image processing apparatus and image processing method
An image processing apparatus and an image processing method of the present invention improves image quality during monochrome output by adaptively executional conversion from a color image signal...
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7190485 |
Method for multilevel printing of digital images using reduced colorant amounts
A method for modifying an input digital image having an (x, y) array of pixels, each pixel having an input code value for one or more color channels, wherein said input code value has a nonlinear...
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7184174 |
Color picture signal processing method and color picture using the method
A color picture signal processing method includes the steps of: (a) inputting picture signal data; (b) converting the picture signal data to data of luminance Y and color differences Cr and Cb on a...
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7173234 |
Method reading apparatus and control method thereof having an illumination unit
The deterioration of read-image quality caused by LED color-tone variations is suppressed in a case in which a white-color LED illumination module is used as a light source of a color-image reading...
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7164498 |
Color matching for a printing process using more than four colorants using a four-colorant color management system
A method for representing a digital image in an extended CMYK color space that has an extended color gamut. The image is for output to an output device that uses a set of more than four colorants...
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7161719 |
Generalized color calibration architecture and method
A generalized color calibration architecture and method are disclosed. A first interface receives raw measuring data of a sample from a measuring tool. The data has a color type, and the sample has...
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7158271 |
Image processing apparatus
R, G and B signals read by a 4-line color CCD sensor are converted into C, M and Y color signals. A black-and-white signal is generated from a luminance signal read by the 4-line color CCD sensor....
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