Ricoh Company, Ltd.

Fumihiro Nakashige

Kenji Kobayashi

Hitoshi Itoh

Keiji Kojima

Shinichi Sumiyoshi

Otoichi Nakata

Satoshi Yamauchi

Takuji Kamada

Mitsumasa Nomoto

An inspection system for inspecting a target includes a first lighting device configured to irradiate light onto the target from a given direction; a second lighting device, provided between the target and the first lighting device, configured to irradiate light onto the target from an oblique direction with respect to the given direction; an image capture device, provided at a position opposite to a position of the target with respect to the first lighting device and the second lighting device in the given direction; and circuitry configured to acquire a first inspection target image of the target, captured by the image capture device by irradiating the light from the first lighting device, and a second inspection target image of the target, captured by the image capture device by irradiating the light from the second lighting device, to be used for inspecting the target.

Inspection system, inspection apparatus, and method using multiple angle illumination

A lighting device includes: a light emitting device including a plurality of light emitting elements arranged in curve having a first curvature; and a honeycomb member having an extendable and contractible honeycomb structure, arranged in curve having a second curvature larger than the first curvature, in an emission direction of light emitted from the light emitting device.

Lighting device, and apparatus and system incorporating the lighting device

An image projection device includes: a drive control unit that generates colors sequentially; a setting unit that sets a color of an illumination image; an image capturing control unit that receives, from the drive control unit, a synchronization signal that specifies a timing at which light of a color closest to the set color of the illumination image is not projected and causes an image of a projection surface to be captured in accordance with the timing that is specified by the synchronization signal; an illumination image detection unit that detects, from captured image data, an illumination image that is produced by illuminating the projection surface by an illuminating device; and an illumination image generation unit that generates projection image data obtained by combining given image data at a position at which the illumination image is detected.

Image projection device

The present invention is concerning an image projection apparatus comprising: a projecting unit that projects and displays on a projection surface each image in a time sharing manner for each of a plurality of color components, for an input image signal; a shooting unit that shoots a projected image on the projection surface; a shoot control unit that makes the shooting unit perform the shooting, when a detection mode of a irradiation point at which light is irradiated from an irradiation device on the projection surface is set, in timing shifted by a certain amount of time from a synchronized state to time sharing timing of each color component in the projecting unit; and an irradiation-point-position detecting unit that detects, from a projected image projected by the projecting unit, a position of the irradiation point on the image.

Image projection apparatus and presentation system

An image projection device includes: a drive controller that causes generation of light of a specified color tone by a combination of light to be transmitted by a liquid crystal panel to project image data onto a projection plane; an image capturing controller that receives a synchronization signal that specifies a period in which the liquid crystal panel does not transmit light from the drive controller and causes capturing of an image of the projection plane according to the period that is specified by the synchronization signal; an illuminated image detector that detects, from the captured image of the image data, an illuminated image that is illuminated by an illuminating device on the projection plane; and an illuminated image generator that generates projection image data obtained by combining given image data in a position in which the illuminated image is detected.

An image inspecting apparatus includes a first light illuminating unit that irradiates a measured object on which an image is formed with illuminating light from a diagonal direction; an imaging unit that receives specular light of the illuminating light with which the measured object is irradiated by the first light illuminating unit; and an image inspecting unit that inspects the image. The image inspecting unit generates gloss reference data from density distribution data included in print data used for forming the image by using a converting unit. The image inspecting unit inspects a gloss distribution of the image by using the gloss reference data and a gloss distribution of the image that is generated based on an amount of the specular light received by the imaging unit.

Method and apparatus for inspecting image, image forming apparatus, and computer-readable recording medium storing image inspecting program

An image inspecting apparatus includes a first light illuminating unit irradiating a measured object on which an image is formed with light from an inclined direction; a second light illuminating unit irradiating the measured object with light from a different direction; an imaging unit receiving reflected light of the light with which the measured object is irradiated by the first light illuminating unit and the second light illuminating unit; a first and a second reference plate having a mirror surface and a diffuse surface, respectively; and an image inspecting unit inspecting a gloss distribution of the image based on the amount of light received by the imaging unit and a correcting coefficient.

Image inspecting apparatus, image inspecting method, and image forming apparatus

An image processing apparatus includes a scanning unit configured to scan at least one of two surfaces of a printed material on both of which information is printed and to obtain a density image representing intensity distribution of diffuse reflection light from the scanned surface and a gloss image representing intensity distribution of specular reflection light from the scanned surface, a mask image generating unit configured to generate a mask image for the scanned surface based on the obtained gloss image, and a show-through removing unit configured to perform mask processing on the density image using the generated mask image to generate a show-through-removed image that does not include show-through information for the scanned surface.

Image processing apparatus, method, and program product removing show-through from density image using mask image generated from gloss image

A disclosed image scanning device illuminates a document with a light source, focuses light reflected from the document on an image sensor to obtain one-dimensional images of the document, and obtains a two-dimensional image of the document from the one-dimensional images. The device includes an illumination lens for dividing a light beam emitted from the light source into multiple light beams and a combining unit for combining the multiple light beams on the document. A disclosed image scanning method includes the steps of illuminating a document with a light source; focusing light reflected from the document on an image sensor to obtain one-dimensional images of the document; and obtaining a two-dimensional image of the document from the one-dimensional images. In this method, a light beam from the light source is divided into multiple light beams and the multiple light beams are combined on the document. A disclosed image forming apparatus includes the image scanning device.

Image scanning device and illuminating device that divide a light beam from a light source into multiple light beams and direct the multiple light beams to a target

An image evaluation program is implemented in an image evaluation apparatus to evaluate a dot of an image that is reproduced on a support medium by an imaging apparatus and formed by a plurality of dots having a predetermined dimension arranged in a main scanning direction and a sub scanning direction. The image evaluation apparatus produces image signals at a resolution at least twice as high as a dot resolution of the image, and the image evaluation program is arranged to measure a dot position of each dot in the image.

Image evaluation apparatus and method

An image reader apparatus for lighting a manuscript surface of a manuscript in a line state, and for image-forming a reflection light from a reading part of the manuscript surface lighted in the line state, to an image sensor, by an image forming lens which forms a part of a scaled down optical system so that an image of the manuscript is read, includes an irradiation opening part and an optical element. The irradiation opening part is for irradiating a lighting light to an outside part, which is formed at the light source. The optical element for attenuating a light amount so as to be permeated, which is provided between the irradiation opening part and the manuscript stand.

Image reader apparatus and cylinder shaped lamp used for the same

An image reader apparatus for lighting a manuscript surface of a manuscriptin a line state, and for image-forming a reflection light from a reading part of the manuscript surface lighted in the line state, to an image sensor, by an image forming lens which forms a part of a scaled down optical system so that an image of the manuscript is read, includes an irradiation opening part and an optical element. The irradiation opening part is for irradiating a lighting light to an outside part, which is formed at the light source. The optical element for attenuating a light amount so as to be permeated, which is provided between the irradiation opening part and the manuscript stand.

Growing community of inventors

Kanagawa, Japan

Fumihiro Nakashige