Canon Kabushiki Kaisha

Akira Shibasaki

Hiromitsu Nishikawa

Yoshiyuki Nakagawa

Ken Tsuchii

Masataka Sakurai

Takahiro Suzuki

Takuya Shimada

Shintaro Kasai

Hideki Kubo

Akiko Saito

Takashi Ochiai

Masaharu Sato

Akiko Hammura

Masao Furukawa

Tatsurou Mori

Yusuke Imahashi

Takayuki Jinno

Shinji Kishikawa

Seiichi Kamiya

An apparatus includes a control unit configured to control an illumination unit such that two or more light sources from among the plurality of light sources of the illumination unit are turned on when an image of an object is captured, and a derivation unit configured to derive a reflection characteristic of the object based on image data obtained by capturing the image of the object, wherein the control unit turns on the two or more light sources such that a distance between the two or more light sources is greater than a predetermined threshold value.

Apparatus, method, and storage medium for acquiring a reflection characistic of an object

An apparatus includes a first acquisition unit configured to acquire specular reflection information about specular reflection light on an object, a second acquisition unit configured to acquire diffuse reflection information about diffuse reflection light on the object, and a compression unit configured to compress the diffuse reflection information based on the specular reflection information.

Apparatus, method, and storage medium for compressing data about texture of an object

A control apparatus includes: a control unit that controls an image capturing device and an illumination device that includes multiple light sources, and obtains a first number of reference images corresponding to the first number of the light sources being less than the multiple light sources; and a generation unit that generates correction data for correcting illuminance unevenness of a target image based on the first number of the reference images, which is obtained by capturing an image of a measurement target object different from the reference object while turning on a light source of interest out of the multiple light sources. The generation unit generates the correction data corresponding to a light source not included in the first number of the light sources by carrying out interpolation processing while using at least two reference images out of the first number of the reference images.

Control apparatus, control method, and storage medium

Disclosed is a liquid discharge method of discharging liquid with a liquid discharge head having a heating surface that contacts and heats the liquid and a discharge port that faces the heating surface and discharges the liquid. The method includes heating the liquid through the heating surface to generate a bubble such that the bubble communicates with an atmosphere, thereby discharging the liquid. The liquid that is being discharged from the discharge port includes a trailing portion. The trailing portion moves toward the heating surface in response to a reduction in volume of the bubble and contacts the heating surface. The method further includes heating the trailing portion through the heating surface while the trailing portion is in contact with the heating surface, thereby generating a bubble.

Liquid discharge method and liquid discharge apparatus for heating a liquid through a surface to generate a bubble

In printing, it is possible to more easily reduce a change in color that is caused by the surface form of an image to be formed. A color correction unit configured to correct color data representing a color by using a correction value in accordance with gloss data representing gloss, a color conversion unit configured to convert the corrected color data into color material amount data, a first generation unit configured to generate, based on the color material amount data, data that is used to form a color development layer among the print data and which makes the color development layer flat and smooth, and a second generation unit configured to generate, based on the gloss data, data that is used to form a glossy layer among the print data are included.

Generating print data including data to form a flat and smooth color development layer and data to form a gloss layer

An image processing apparatus obtains first information including reflective characteristics of an object to be reproduced and second information including transmissive characteristics of the object to be reproduced. Then, the image processing apparatus determines the amount of coloring material for each pixel of an image representing the object to be reproduced based on the first information and the second information.

Image processing apparatus and image processing method

There is provided an image processing apparatus capable of favorably reproducing a metallic texture on a recording medium. The image processing apparatus includes an input unit configured to receive color information included in image data, a conversion unit configured to convert the color information into color material amount data of a chromatic color material, and a determination unit configured to make a determination on color material amount data of an achromatic color material to be formed on top of the chromatic color material on a recording medium so as to cause a hue of diffused light and a hue of specular reflection light of an image, which is formed of a chromatic color material corresponding to the converted color material amount data of the chromatic color material, formed on the recording medium to coincide with each other.

Image processing apparatus, image processing method, and storage medium

An image processing apparatus may include a conversion unit, a determination unit, and a calculation unit to convert image data into color material data indicating a chromatic color material amount and an achromatic color material amount. The conversion unit converts image data of a pixel of interest into chromatic color material color material data. The determination unit determines achromatic color material color material data on the pixel of interest based on coloring information corresponding to the converted color material data of the chromatic color material and coloring information that occurs at surrounding pixels that surround the interest pixel. The calculation unit calculates coloring information that occurs at the interest pixel based on coloring information corresponding to a combination of the converted color material data of the chromatic color material and the determined color material data of the achromatic color material and the coloring information that occurs at the surrounding pixels.

Image processing is performed for an image recording apparatus which records an image by arranging, on a recording medium, dots of a plurality of types of dot structures having different arrangements of color materials to be used. A dot arrangement signal which corresponds to an input color signal and represents the arrangement of dots of the plurality of types of dot structures is generated. Image data which arranges dots of the plurality of types of dot structures on a recording medium based on the dot arrangement signal is output.

Image processing apparatus and method therefor

An image processing apparatus includes a conversion unit and a determination unit to convert image data into color material data including color material data indicating a color material amount of a chromatic color material and color material data indicating a color material amount of an achromatic color material. The conversion unit converts image data of a region of interest in an image into the color material data of the chromatic color material. The determination unit determines the color material data of the achromatic color material corresponding to the image data so that a color indicated by coloring information corresponding to the image data of the region of interest in the image approaches an achromatic color.

Image processing apparatus and method for reducing coloring between color ink and clear ink on a pixel region

An image processing apparatus includes a conversion unit configured to convert image data corresponding to a pixel of interest in an image into color material data corresponding to a color material amount of a chromatic color material, and a generation unit configured to generate color material data corresponding to a color material amount of an achromatic color material at the pixel of interest in such a manner that the color material data corresponding to the color material amount of the achromatic color material at the pixel of interest is different from color material data corresponding to a color material amount of the achromatic color material at a pixel adjacent to the pixel of interest.

An image forming apparatus in which an operation of reciprocal scans of a print head including a plurality of ejection ports for ejecting at least two kinds of inks onto a print medium and an operation of conveying the print medium are repeatedly performed, and in the meanwhile ink is ejected from the print head to the print medium for printing, comprises input unit configured to input ejection data for ejecting the ink onto the print medium to form an image, calculating unit configured to calculate an area ratio of each ink on the surface of the print medium based upon the ejection data, and setting unit configured to set the ejection data in such a manner that the area ratio is generally constant in the reciprocal scans.

Image forming apparatus and image forming method

A liquid jet recording head includes a substrate including a plurality of discharge energy generating elements, and a plurality of ink supply ports positioned along an array direction of the plurality of discharge energy generating elements and separated from each other by beams, a plurality of ribs supported by the beams, and an orifice plate supported by the plurality of ribs, wherein the orifice plate includes discharge ports for discharging liquid droplets which enter from the plurality of ink supply ports and is provided with discharge energy by the plurality of discharge energy generating elements.

Growing community of inventors

Kawasaki, Japan

Akira Shibasaki