Hitachi, Ltd.

Ricoh Company, Ltd.

Other

Renesas Technology Corp.

Hitachi Seibu Soft Ware Co., Ltd.

Hitachi Computer Consultant Ltd.

Rcoh Company

Keiji Kojima

Kiyokazu Nishioka

Hiroyoshi Ishizaki

Shunichi Torii

Tadashi Kitai

Yoshiki Matsuda

Hitomi Kaneko

Hiroyuki Kawamoto

Keiichi Miyamoto

Seiji Futatsugi

Kazuhiko Tanaka

Yoshifumi Fujikawa

Tohru Nojiri

Toru Nojiri

Hitoshi Itoh

Takeshi Miyazaki

Hiroshi Nakayama

John Setel O'Donnell

Yoshiki Kurokawa

Koichi Terada

Yusuke Mishina

Benjamin Franklin Cutler

Richard Deeley

Fumihiro Nakashige

Yatin Mundkur

Atsuo Kawaguchi

Woobin Lee

Christopher H Basoglu

Masao Ishiguro

Gregorio Gervasio

Gen Sato

David Baker

Vinay Naik

Sarang Padalkar

Toshiyuki Ono

Yuichi Yagawa

Kenji Baba

Kenichi Funaki

Kiyoshi Kumagai

Noriyasu Ido

Koji Hosoki

Hiroshi Takahashi

Toshio Miyazawa

Toshihiro Suzuki

Takashi Saitoh

Semyon Nisenzon

Hideyo Makino

Kiyoshi Yamamoto

Hideaki Yamagata

Hirobumi Nishida

Satoshi Wakayama

Yasusi Kanada

Yoichi Kubota

Tadashi Araki

Yoshinori Kitahara

Tetsuya Hashimoto

Takuji Kamada

Masami Takahashi

Takuya Suzuki

Masahiro Hashimoto

Masato Mogaki

Akiharu Sakata

Katsushi Morimoto

Ken Chin

Maki Shinoda

Tatsuya Nishiyama

Eiji Tatsukawa

Yuka Minamizono

Tatsuhiko Hashimoto

Yoko Mizuta

An inspection system includes circuitry configured to determine whether a predetermined pattern is present in a master image of an inspection target object; acquire an inspection target image of the inspection target object from an image captured by an image capturing device; compare the master image of the inspection target object with the inspection target image, to inspect the inspection target object; and switch a threshold value used in comparing the master image with the inspection target image of the inspection target object depending on a determination result of determining whether the predetermined pattern is present in the master image of the inspection target object.

Inspection of a target object using a comparison with a master image and a strictness of a quality evaluation threshold value

A head driving device includes a recording head, an input-and-output interface, and circuitry. The recording head includes a plurality of nozzles and a plurality of pressure generating elements corresponding to the plurality of nozzles. The input-and-output interface is configured to acquire correction information generated based on a chart image of a specific pattern for correcting a deviation amount of a landing position of each of the plurality of nozzles. The circuitry is configured to set the correction information acquired by the input-and-output interface and perform correction processing for correcting the deviation amount of the landing position on a driver for each of the plurality of nozzles of the recording head, in accordance with the correction information.

Head driving device, liquid discharge apparatus, and head driving method

An image inspection apparatus for checking an image printed on a recording medium includes: a reference pixel obtaining unit configured to generate a reference image and obtain a first pixel value from the reference image; a print pixel obtaining unit configured to extract an image printed area and obtain a second pixel value from the image; an offset processing unit configured to add a non-image-printed area; and an image checking unit configured to compute a difference between the first image pixel value and the second image pixel value and detect an error when the difference is higher than a predetermined threshold value, wherein the non-image-printed area contains a third pixel value that is different from the first pixel value or the second pixel value, and the image checking unit suspends a determination whether or not there is an error in the image printed area associated with the non-image-printed area.

Image inspection apparatus, image inspection system and image inspection method

Display screen with graphical user interface

Writing paper

An image inspection apparatus includes a first-image obtaining unit, a scanned-image obtaining unit, a second-image obtaining unit, first and second registration units, a combining unit, and an inspection unit. The first-image obtaining unit obtains a first image generated by scanning a sheet on which a predetermined image has been printed. The scanned-image obtaining unit obtains a scanned image generated by scanning a printed matter produced by printing a second image additionally on the sheet. The second-image obtaining unit obtains the second image. The first registration unit performs registration between the first and scanned images. The second registration unit performs registration between the second image and the scanned image. The combining unit generates a master image by combining the first and second images based on registration results performed by the first and second registration units. The inspection unit inspects the printed matter by comparing the scanned image against the master image.

Image inspection of printed matter with a master image

An inspection apparatus obtains a correction parameter for correcting the positional shift between a previously read image and a master image, and corrects one of a currently read image or a master image using the correction parameter for the previously read image, before comparing between the currently read image and the master image to detect the positional shift in the currently read image.

Apparatus, system, and method of inspecting image, and recording medium storing image inspection control program

An image test apparatus includes an image generating unit acquiring an output target image with which an image is formed and output by an image forming apparatus, and generating a test image for testing the read image, an image test unit determining a defect of the read image based on a difference between the test image and the read image, a defect number determining unit determining number of defects contained in the read image based on a determination result of the defect of the read image, a frequency distribution generating unit accumulating defect numbers of multiple read images, each of the defect numbers being the number of defects detected in one read image, and generating a frequency distribution of the defect numbers, and an abnormality determination unit determining an abnormality of the image forming apparatus based on a change in the frequency distribution generated for each predetermined period.

Image test apparatus, image test system, and image test method

An apparatus, system, method, and non-transitory recording medium storing an image inspection control program, each of which is capable of inspecting a printed image are provided. While generating an inspection image to be used for inspecting a read image obtained by reading the printed image, attribute data indicating, for each pixel in the inspection image, whether the pixel belongs to drawing data in the inspection image is generated. The attribute data is used to process inspection of the read image based on comparison between the read image and the inspection image.

An inspection apparatus, inspection system, inspection method, and inspection control program stored in a recording medium, each of which sets a reference point in a master image and a read image read from a printed image, which is to be used for detecting the positional shift between the read image and the master image, based on determination whether a pattern previously added to the printed image for detecting the positional shift is available or can be used to effectively detect the positional shift.

An apparatus, system, method, and a non-transitory recording medium storing an image inspection control program, each of which is capable of inspecting a printed image based on comparison between a read image read from the printed image and an inspection image. As a portion of the read image is obtained, the size of the obtained portion of the read image is corrected to match the size of the inspection image, using a magnification ratio previously obtained. After matching the sizes of the read image and the inspection image, the read image is compared with the inspection image to inspect the read image.

An image reading device includes an imaging device including a plurality of imaging elements, a color measuring unit that detects color of an object at a color measurement area, a calibration plate having a surface on which a plurality of color patches is formed, and a processor that causes the color measuring unit to read the plurality of color patches while changing a relative position between the plurality of color patches and the plurality of imaging elements to output color measurement results of the plurality of color patches, and generates a set of reference values for the plurality of color patches based on the color measurement results of the plurality of colors. The set of reference values are compared with the reading results of the plurality of color patches to generate a set of correction values for correcting the reading results of the plurality of color patches.

Image reading device employing calibration plate, apparatus including image reading device, image reading controlling method, and recording medium storing image reading control program

An image test apparatus includes a color-image-data acquiring unit that acquires color image data being data of an image to be formed with a color material; a master-image-data generating unit that converts the color image data depending on transparent image data being data of an image to be formed with a transparent color material, thereby generating master image data; and an image testing unit that tests, using the master image data, a test image data which is generated by optically reading a print image from a printed matter on which the print image based on the color image data and the transparent image data has been printed.

Image test apparatus, image test system, and image test method for testing a print image based on master image data

An image inspection apparatus obtains a threshold value indicating an allowable range of offset differences between an output target inspection image and a pre-provided inspection image, and determines whether to inspect a read image obtained by reading an output target image formed on a recording sheet having a pre-provided image, using the threshold value.

Image inspection method, apparatus, control program overlapping inspection images to obtain positional shift

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Sagamihara, Japan

Keiji Kojima