Seiko Epson Corporation

Katsuyuki Tanaka

Takumi Shimomukai

Takuya Ono

Yuko Yamamoto

Kenji Fukasawa

Makoto Fujino

Takahiro Kamada

Masayuki Seko

Mitsuhiro Yamashita

Takashi Ito

Yasumasa Nakajima

Kenji Matsuzaka

Naoki Hagihara

Masaki Kimura

Shotaro Matsuda

Provided is an image processing device coupled to a printing device that performs printing on a medium by ejecting ink having a plurality of colors, and configured to convert image data into ink amount data. The image processing device includes: an input unit configured to input a search condition; an acquisition unit configured to acquire a plurality of search values based on the search condition input by the input unit; a table storage unit storing a plurality of image conversion tables for converting the image data into the ink amount data; and a search unit configured to search the plurality of image conversion tables for a target image conversion table based on the plurality of search values acquired by the acquisition unit.

Image processing device, image processing method, and image processing program

A profile creation device that causes a display section to display a display screen displaying an input color space image and an output color space image, the profile creation device includes an acquisition section that acquires first color gamut data indicating a color space related to the input device and second color gamut data indicating a color space related to the output device, an image generating section configured to generate an input color space image of a three dimensional image based on the first color gamut data and an output color space image of a three dimensional image based on the second color gamut data, a display control section configured to generate screen data for displaying the display screen having an image display area for displaying the input color space image and the output color space image generated by the image generating section, and an input and output section for transmitting the screen data generated by the display control section to the display section.

Profile creation device and method generating and displaying input and output device color gamuts as 3D images

An image processing device includes an image input section configured to receive input of an image, a chromatic value acquisition section configured to obtain a chromatic value with respect to each of pixels of the image, an RGB conversion section configured to convert the chromatic value of each of the pixels of the image into an unnormalized linear RGB value expressed by a linear RGB value based on a characteristic of a display which outputs the image, a normalization section configured to divide the unnormalized linear RGB value by a modulus higher than a maximum value of linear RGB values which express displayable colors of the display to thereby generate a normalized linear RGB value when the unnormalized linear RGB value of at least one of the pixels is higher than the maximum value, an outputting RGB conversion section configured to convert the normalized linear RGB value into a display outputting RGB value, and an output section configured to output the display outputting RGB value to the display.

Image processing device and image processing method

The method of generating color sample data includes the step of generating the color sample data for preparing a color sample of a color included in a difference area between a color gamut in an equipment independent color space which is expressed by a first color expression apparatus and a color gamut in the equipment independent color space which is expressed by a second color expression apparatus using an output profile which expresses the color and corresponds to one of the first color expression apparatus and the second color expression apparatus configured to express a color in at least a part of the difference area out of a first output profile representing a correspondence relationship between a coordinate value in an output color space depending on the first color expression apparatus and a coordinate value in the equipment independent color space, and a second output profile representing a correspondence relationship between a coordinate value in an output color space depending on the second color expression apparatus and a coordinate value in the equipment independent color space based on a coordinate value in the difference area.

Method of generating color sample data, method of preparing color sample, and color sample preparation device

A method of creating teacher data used for creating a color prediction model that predicts a spectral reflectance of a printed matter printed using an ink amount set from the ink amount set that is a combination of ink amounts of inks used for printing, includes, in an ink amount space in which a plurality of lattice points are disposed, selecting an ink amount set from an ink amount set associated with each lattice point, according to a predetermined selection rule, acquiring a spectral reflectance of a color chart printed on a printing medium using the selected ink amount set, and setting the teacher data using the selected ink amount set as an input value and the acquired spectral reflectance as an output value.

Method of creating teacher data, color prediction model creation apparatus, and method of creating color prediction model

A common profile is prepared that, in a device-independent first color system, converts image data of a color space that is representable by the first color system into image data of a color space that is commonly representable by the plurality of printing devices, and first image data representing an image to be printed is converted into second image data by using the common profile, where the image is represented by the first color system. Then, the second image data is converted into third image data by using an output profile, where the third image data is image data of a second color system that depends on a specific printing device designated from among a plurality of printing devices and the output profile is unique to the designated specific printing device. The third image data thus obtained is output to the designated specific printing device and printed.

Printing system and printing method

To set a shading relationship between the plurality of shading inks having the same system color and different densities included in a plurality of kinds of inks, to perform provisional color separation processing to decide a color space value in a virtual color space in the second color system for every lattice point that defines a correspondence relationship between the first and second color spaces, to perform first processing of setting a position of the lattice point where a generation amount of the first ink at the lattice point can be maximized and an ink amount at the lattice point for a first ink which is one of light inks from a result of the provisional color separation processing, and then to perform second processing of setting an ink amount of the first ink and an ink amount of a second ink having a higher density by giving priority to a use of the first ink while maintaining a virtual color space value of the provisional color separation processing result for the first ink.

Color conversion profile creation device, color conversion profile creation method, and program therefor

A color chart for color selection to select a color patch of the closest color to a target color from among a plurality of the color patches, in which the color patch that represents colors of either an adjustment target color or a reference color that substitutes the adjustment target color is a target patch, a direction that represents a direction in which a color is to be adjusted from the target patch in the color chart for color selection is an adjustment direction, and the adjustment direction from the target patch is wider than the direction counter to the adjustment direction from the target patch.

Color chart for color selection, method for producing color chart for color selection, and device for producing color chart for color selection

A profile adjustment method for causing a computer to execute a process of adjusting a to-be-adjusted profile by using a color conversion module performing a color conversion process of converting coordinate values in a color space with reference to a profile, the profile adjustment method including: setting a color conversion module included in one or more of the color conversion module, as a target module that is a color conversion module to be used; causing the target module to execute the color conversion process of converting input coordinate values in an input color space into output coordinate values in an output color space; and executing a process of using a conversion result by the target module to adjust the to-be-adjusted profile.

Profile adjustment method, profile adjustment apparatus, and profile adjustment system

A printing apparatus provided with a carriage provided with a mounting unit which can be mounted with a cartridge in which ink is accommodated and a printing head, an ink tank which stores ink, and a control unit which controls ejecting of ink using the printing head, in which, in a case in which the control unit obtains information for blocking ejecting of ink corresponding to the mounting unit, ejecting of ink, by the printing head, corresponding to the mounting unit is blocked.

Printing apparatus and control method of printing apparatus

A profile adjustment system adjusts a profile to be used for converting a coordinate value in a color space, based on an adjustment target at an adjustment point indicating a color to be adjusted. The profile adjustment system includes a coordinate receiving unit configured to display on a display unit an input field for coordinates of the adjustment point, and to receive an input of the coordinates of the adjustment point, and a color display processing unit configured to display on the display unit a color corresponding to the coordinates, the input of which has been received, in association with displaying of the coordinates.

Profile adjustment system, profile adjustment device, and profile adjustment method

A color conversion table generation device, that generates a color conversion table defining a correspondence relationship between a coordinate value of input color space and a use amount of a plurality kinds of color materials, includes a boundary position setting unit that receives selection of setting of a boundary position at which use of a specific color material included in the plurality kinds of color materials is started or ended in a predefined axis provided in the input color space, a usability determination unit that determines whether the specific color material is to be used at a grid point defining the correspondence relationship or not, based on the boundary position in the predefined axis, and a use amount setting unit that sets a use amount of the specific color material at the grid point in a case where it is determined that the specific color material is to be used.

Color conversion table generation device, and color conversion table generation method

Calculating a difference between a hue angle of a colorimetric value of a printed object with respect to diffuse reflection and the hue angle of a colorimetric value of the printed object with respect to specular reflection, calculating the difference between a standard chroma with respect to an observational light source and the chroma of the colorimetric value of the printed object with respect to specular reflection under the observational light source, and calculating a bronzing index value on the basis of a value obtained by multiplying the calculated difference of the hue angles by the calculated difference of the chromas.

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Nagano, Japan

Katsuyuki Tanaka