JP6918482B2 - 画像読取装置 - Google Patents

画像読取装置 Download PDF

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Publication number
JP6918482B2
JP6918482B2 JP2016244057A JP2016244057A JP6918482B2 JP 6918482 B2 JP6918482 B2 JP 6918482B2 JP 2016244057 A JP2016244057 A JP 2016244057A JP 2016244057 A JP2016244057 A JP 2016244057A JP 6918482 B2 JP6918482 B2 JP 6918482B2
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Japan
Prior art keywords
document
pixel
edge
interest
difference
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Application number
JP2016244057A
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English (en)
Japanese (ja)
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JP2018098723A5 (enExample
JP2018098723A (ja
Inventor
比呂夢 清水
比呂夢 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP2016244057A priority Critical patent/JP6918482B2/ja
Priority to US15/839,564 priority patent/US10764461B2/en
Publication of JP2018098723A publication Critical patent/JP2018098723A/ja
Publication of JP2018098723A5 publication Critical patent/JP2018098723A5/ja
Application granted granted Critical
Publication of JP6918482B2 publication Critical patent/JP6918482B2/ja
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/0461—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa part of the apparatus being used in common for reading and reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00684—Object of the detection
    • H04N1/00687—Presence or absence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00684—Object of the detection
    • H04N1/00702—Position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00684—Object of the detection
    • H04N1/00708—Size or dimensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00742—Detection methods
    • H04N1/00748—Detecting edges, e.g. of a stationary sheet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00763—Action taken as a result of detection
    • H04N1/00771—Indicating or reporting, e.g. issuing an alarm
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/107—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with manual scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32203—Spatial or amplitude domain methods
    • H04N1/32229—Spatial or amplitude domain methods with selective or adaptive application of the additional information, e.g. in selected regions of the image
    • H04N1/32245—Random or pseudorandom selection of pixels

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
JP2016244057A 2016-12-16 2016-12-16 画像読取装置 Active JP6918482B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016244057A JP6918482B2 (ja) 2016-12-16 2016-12-16 画像読取装置
US15/839,564 US10764461B2 (en) 2016-12-16 2017-12-12 Image reading apparatus with determination of original size, and image forming apparatus, reading method, and image forming system therewith

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016244057A JP6918482B2 (ja) 2016-12-16 2016-12-16 画像読取装置

Publications (3)

Publication Number Publication Date
JP2018098723A JP2018098723A (ja) 2018-06-21
JP2018098723A5 JP2018098723A5 (enExample) 2020-02-06
JP6918482B2 true JP6918482B2 (ja) 2021-08-11

Family

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Family Applications (1)

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JP2016244057A Active JP6918482B2 (ja) 2016-12-16 2016-12-16 画像読取装置

Country Status (2)

Country Link
US (1) US10764461B2 (enExample)
JP (1) JP6918482B2 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018098722A (ja) * 2016-12-16 2018-06-21 キヤノン株式会社 画像読取装置、及び画像形成装置、読取方法、画像形成システム
JP7455562B2 (ja) 2019-11-29 2024-03-26 キヤノン株式会社 画像読取装置及び画像形成装置
JP2022128248A (ja) 2021-02-22 2022-09-01 キヤノン株式会社 画像読取装置、画像形成装置
JP7657608B2 (ja) 2021-02-25 2025-04-07 キヤノン株式会社 画像読取装置
JP2022137425A (ja) 2021-03-09 2022-09-22 キヤノン株式会社 画像読取装置、画像形成装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3747695B2 (ja) 1999-07-19 2006-02-22 富士ゼロックス株式会社 画像読取装置
US7102786B2 (en) * 2000-10-05 2006-09-05 Matsushita Electric Industrial Co., Ltd. Image reading apparatus and processing apparatus
JP4745949B2 (ja) * 2006-12-11 2011-08-10 キヤノン株式会社 画像処理装置およびその制御方法
JP4445989B2 (ja) * 2007-09-10 2010-04-07 Ｎｅｃアクセステクニカ株式会社 端部検出装置及び端部検出方法
JP4858437B2 (ja) 2007-12-28 2012-01-18 ブラザー工業株式会社 画像読取装置
JP4941316B2 (ja) 2008-01-16 2012-05-30 ブラザー工業株式会社 画像読取装置
US8330997B2 (en) * 2008-10-02 2012-12-11 Samsung Electronics Co., Ltd. Image processing apparatus, image forming apparatus and image processing method
JP4807406B2 (ja) * 2008-12-16 2011-11-02 ブラザー工業株式会社 画像読取装置
JP5755089B2 (ja) * 2011-09-08 2015-07-29 株式会社Pfu 画像処理装置、画像処理方法、画像処理プログラム及び画像処理システム
JP6161484B2 (ja) * 2013-09-19 2017-07-12 株式会社Pfu 画像処理装置、画像処理方法及びコンピュータプログラム
US9641716B2 (en) * 2015-07-10 2017-05-02 Kabushiki Kaisha Toshiba Image forming apparatus and image forming method for both side copying
JP6613115B2 (ja) * 2015-11-19 2019-11-27 キヤノン株式会社 画像処理装置及び画像処理方法とプログラム
JP2018098722A (ja) * 2016-12-16 2018-06-21 キヤノン株式会社 画像読取装置、及び画像形成装置、読取方法、画像形成システム
JP6918481B2 (ja) * 2016-12-16 2021-08-11 キヤノン株式会社 画像読取装置
JP6345224B1 (ja) * 2016-12-19 2018-06-20 株式会社Pfu 画像処理装置、矩形検出方法及びコンピュータプログラム
JP6869076B2 (ja) * 2017-03-30 2021-05-12 キヤノン株式会社 画像読取装置
JP6965014B2 (ja) * 2017-04-25 2021-11-10 キヤノン株式会社 原稿読取装置

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Publication number Publication date
US10764461B2 (en) 2020-09-01
US20180176407A1 (en) 2018-06-21
JP2018098723A (ja) 2018-06-21

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