公开(公告)号：US20180146150A1

公开(公告)日：2018-05-24

申请号：US15790101

申请日：2017-10-23

Applicant: Hiroki SHIRADO ,  Masamoto NAKAZAWA ,  Masayuki YABUUCHI

Inventor： Hiroki SHIRADO ,  Masamoto NAKAZAWA ,  Masayuki YABUUCHI

IPC: H04N5/367 ,  H04N5/217

Abstract: A photoelectric conversion device having plural photoelectric conversion pixels includes an imaging unit, a position identifying unit, an interpolation determining unit, and an interpolation processing unit. The imaging unit generates image data for each of plural colors based on light received in the photoelectric conversion pixels. The position identifying unit detects in the photoelectric conversion pixels a defective pixel outputting an electrical signal at an abnormal level, and stores position information of the defective pixel. The interpolation deter mining unit determines, based on respective pixel values of peripheral pixels peripheral to the defective pixel, whether to perform an interpolation process on the defective pixel. The interpolation processing unit performs the interpolation process on the defective pixel when the interpolation determining unit determines to perform the interpolation process on the defective pixel. The interpolation process approximates the electrical signal of the defective pixel to an electrical signal at a normal level.

公开(公告)号：US20200252513A1

公开(公告)日：2020-08-06

申请号：US16776521

申请日：2020-01-30

Applicant: Yuuki NAKADA ,  Hajime TSUKAHARA ,  Hiroki SHIRADO ,  Ayumu HASHIMOTO ,  Tomohiko ONO ,  Tatsuya OZAKI ,  Hiroshi KUBO ,  Yoshiaki NAGAO ,  Kimiharu YANAGISAWA ,  Masahiro ITOH

Inventor： Yuuki NAKADA ,  Hajime TSUKAHARA ,  Hiroki SHIRADO ,  Ayumu HASHIMOTO ,  Tomohiko ONO ,  Tatsuya OZAKI ,  Hiroshi KUBO ,  Yoshiaki NAGAO ,  Kimiharu YANAGISAWA ,  Masahiro ITOH

IPC: H04N1/00

Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.

公开(公告)号：US20180139345A1

公开(公告)日：2018-05-17

申请号：US15600156

申请日：2017-05-19

Applicant: Naoki GOH ,  Masaki NAGASE ,  Hiroki SHIRADO ,  Naoki ASABA ,  Shiho SHIMOSAKA ,  Satoshi HATANAKA ,  Osamu KIZAKI ,  Hiroshi ISHll ,  Masayuki YABUUCHI ,  Hideki HASHIMOTO ,  Atsushi YOSHIDA ,  Masafumi KISHI ,  Ayumu HASHIMOTO

Inventor： Naoki GOH ,  Masaki NAGASE ,  Hiroki SHIRADO ,  Naoki ASABA ,  Shiho SHIMOSAKA ,  Satoshi HATANAKA ,  Osamu KIZAKI ,  Hiroshi ISHll ,  Masayuki YABUUCHI ,  Hideki HASHIMOTO ,  Atsushi YOSHIDA ,  Masafumi KISHI ,  Ayumu HASHIMOTO

IPC: H04N1/04 ,  G03G15/043 ,  G03G15/01 ,  H04N1/00

CPC classification number: H04N1/04 ,  H04N1/00766

Abstract: An image reading apparatus includes: a plurality of light sources to emit light to a target to be read from a plurality of different irradiation positions; an illumination controller to sequentially and alternately turn on or off the plurality of light sources with a blinking cycle not perceptible to the human eye; an image capturing device to photoelectrically convert, pixel by pixel, reflected light of the light emitted to the target from the plurality of light sources to capture a plurality of read images; a memory to store one or more read images of the plurality of read images being captured; and a synthesizer to synthesize preset regions of the plurality of read images using the one or more read images stored in the memory to generate a synthesized read image representing the target, the preset region of each of the plurality of read images having an image level change caused by reflected light that is smaller than a threshold.

公开(公告)号：US20220407983A1

公开(公告)日：2022-12-22

申请号：US17774162

申请日：2020-12-04

Applicant: Hiroki SHIRADO ,  Masamoto NAKAZAWA ,  Shinji SAKAGUCHI

Inventor： Hiroki SHIRADO ,  Masamoto NAKAZAWA ,  Shinji SAKAGUCHI

IPC: H04N1/60 ,  H04N1/48

Abstract: A gain modification device (20) includes a plurality of gain modification units (31) whose number of units corresponds to a number of kinds of a plurality of signals input to the plurality of gain modification units, each one of the plurality of gain modification units (31) being configured to modify a gain value used to amplify the plurality of signals, and a plurality of gain reflection control units (44) configured to change a timing at which the gain value is to be switched by the plurality of gain modification units (31) such that the gain value of one of the plurality of signals affecting a signal level of another one of the plurality of signals is switched at a timing different from a timing at which the gain value of the another one of the plurality of signals is switched.

公开(公告)号：US20210099614A1

公开(公告)日：2021-04-01

申请号：US17035791

申请日：2020-09-29

Applicant: Tatsuya OZAKI ,  Hiroki SHIRADO

Inventor： Tatsuya OZAKI ,  Hiroki SHIRADO

IPC: H04N1/60 ,  H04N1/58 ,  H04N1/409 ,  H04N1/00

Abstract: A signal correction device includes a correction signal generator configured to generate a correction signal serving to remove noise superimposed on an input signal; a phase adjuster configured to shift a phase of the correction signal generated by the correction signal generator; a subtractor configured to generate an output signal for output by subtracting the correction signal from the input signal; a peak and bottom detector configured to detect a peak value and a bottom value of the output signal; and a determiner configured to determine a phase-shift amount of the phase adjuster from the peak value and the bottom value of the output signal detected by the peak and bottom detector. The determiner detects uncorrected noise from the peak value and the bottom value of the output signal from the subtractor, and sets the phase-shift amount such that the uncorrected noise is reduced to a minimum.

公开(公告)号：US20140043629A1

公开(公告)日：2014-02-13

申请号：US13960056

申请日：2013-08-06

Applicant: Hiroki SHIRADO

Inventor： Hiroki SHIRADO

IPC: H04N1/387 ,  G06K15/00 ,  H04N1/44 ,  H04N1/00

CPC classification number: H04N1/3872 ,  G06K15/4095 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/0005 ,  H04N1/00082 ,  H04N1/00278 ,  H04N1/12 ,  H04N1/193 ,  H04N1/32048 ,  H04N1/32133 ,  H04N1/4433 ,  H04N2201/044 ,  H04N2201/3208 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3269 ,  H04N2201/327 ,  H04N2201/3271

Abstract: An image processing apparatus includes a scanning unit, a gloss detecting unit, and a glossy information processing unit. The scanning unit includes a light source and is configured to scan a document to be scanned at a first illumination position not resulting in halation caused by light of the light source output to the document, and scan the document at a second illumination position resulting in halation caused by the light output to the document. The gloss detecting unit is configured to detect a glossy portion of the document based on images scanned at the first illumination position and the second illumination position. The glossy information processing unit is configured to perform a predetermined process by using information represented by the detected glossy portion.

Abstract translation: 图像处理装置包括扫描单元，光泽检测单元和光泽信息处理单元。 扫描单元包括光源，并且被配置为在第一照明位置扫描要扫描的文档，而不会导致由输出到文档的光源的光引起的停止，并且在第二照明位置扫描文档导致暂停 由光输出引起的文件。 光泽检测单元被配置为基于在第一照明位置和第二照明位置扫描的图像来检测文档的光泽部分。 光泽信息处理单元被配置为通过使用由检测到的光泽部分表示的信息来执行预定处理。

公开(公告)号：US20230283726A1

公开(公告)日：2023-09-07

申请号：US18103510

申请日：2023-01-31

Applicant: Kohsuke NAMBARA ,  Hiroki SHIRADO

Inventor： Kohsuke NAMBARA ,  Hiroki SHIRADO

IPC: H04N1/00

CPC classification number: H04N1/00689 ,  H04N1/00737 ,  H04N1/00708 ,  H04N1/00801

Abstract: A document placement detecting device includes a document table, a plate, a plurality of invisible light sources, an imaging device, and circuitry. The document table transmits light. The plate is openable and closable relative to the document table, and covers the document table in a closed state of the plate. The plurality of invisible light sources irradiate a placement area with invisible light via the document table. The placement area is an area of the document table on which a document is placed. The imaging device receives reflected light from the document, and outputs read data. The circuitry detects the placement of the document with a change in a read value of the read data output from the imaging device based on the irradiation with the invisible light.

公开(公告)号：US20170302821A1

公开(公告)日：2017-10-19

申请号：US15485323

申请日：2017-04-12

Applicant: Tomohiro SASA ,  Masamoto NAKAZAWA ,  Hiroki SHIRADO ,  Hideki HASHIMOTO

Inventor： Tomohiro SASA ,  Masamoto NAKAZAWA ,  Hiroki SHIRADO ,  Hideki HASHIMOTO

IPC: H04N1/409 ,  H04N1/00 ,  H04N1/193 ,  H04N1/40

CPC classification number: H04N1/409 ,  H04N1/00018 ,  H04N1/193 ,  H04N1/40056 ,  H04N1/4076 ,  H04N2201/0094

Abstract: A signal processing device includes a signal output circuit, a controller, and a corrector. The signal output circuit outputs a signal according to a physical quantity being input. The controller controls the signal output circuit. The corrector corrects a signal to be corrected. The signal to be corrected is output from the signal output circuit. The signal output circuit selectively performs one of first operation of outputting a characteristic signal that indicates characteristics of the signal output circuit and second operation of outputting a pseudo signal that is generated spuriously, according to control of the controller. The corrector corrects the signal to be corrected based on one of the characteristic signal and the pseudo signal output from the signal output circuit.

公开(公告)号：US20170019567A1

公开(公告)日：2017-01-19

申请号：US15191035

申请日：2016-06-23

Applicant: Yoshio KONNO ,  Masamoto NAKAZAWA ,  Hiroki SHIRADO

Inventor： Yoshio KONNO ,  Masamoto NAKAZAWA ,  Hiroki SHIRADO

IPC: H04N1/58 ,  H04N5/376 ,  H04N5/369 ,  H04N5/3745 ,  H04N5/363 ,  H04N5/378 ,  H04N1/028 ,  H04N9/04

CPC classification number: H04N1/58 ,  H04N1/02805 ,  H04N1/401 ,  H04N5/361 ,  H04N5/363 ,  H04N5/3692 ,  H04N5/378 ,  H04N2201/0081 ,  H04N2201/0094

Abstract: An imaging element includes: a plurality of pixel units configured to each include a plurality of light receiving elements performing photoelectric conversion; a plurality of analog-to-digital (A/D) converters configured to be provided to each of the pixel units for sequentially converting an analog signal obtained by photoelectric conversion performed by the light receiving elements to a digital signal; a plurality of first holding units configured to be provided to each of the pixel units for sequentially holding a digital signal obtained by conversion performed by the A/D converters; and a plurality of second holding units configured to receive and hold a digital signal held by the first holding units in a period when the A/D converters do not convert an analog signal to a digital signal.

Abstract translation: 成像元件包括：多个像素单元，被配置为每个像素单元包括执行光电转换的多个光接收元件; 多个模数（A / D）转换器，被配置为提供给每个像素单元，用于将由光接收元件执行的光电转换获得的模拟信号顺序转换为数字信号; 多个第一保持单元，被配置为提供给每个像素单元，用于顺序保持由A / D转换器执行的转换获得的数字信号; 以及多个第二保持单元，被配置为在A / D转换器不将模拟信号转换为数字信号的期间内接收和保持由第一保持单元保持的数字信号。

公开(公告)号：US20200336615A1

公开(公告)日：2020-10-22

申请号：US16841708

申请日：2020-04-07

Applicant: Tomohiko ONO ,  Hajime TSUKAHARA ,  Hiroki SHIRADO ,  Ayumu HASHIMOTO ,  Yuuki NAKADA ,  Tatsuya OZAKI ,  Hiroshi KUBO ,  Yoshiaki NAGAO ,  Kimiharu YANAGISAWA ,  Masahiro ITOH

Inventor： Tomohiko ONO ,  Hajime TSUKAHARA ,  Hiroki SHIRADO ,  Ayumu HASHIMOTO ,  Yuuki NAKADA ,  Tatsuya OZAKI ,  Hiroshi KUBO ,  Yoshiaki NAGAO ,  Kimiharu YANAGISAWA ,  Masahiro ITOH

IPC: H04N1/00 ,  G06T7/13 ,  G06T7/194

Abstract: An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.