JP4405663B2 - 画像処理方法及び装置 - Google Patents

画像処理方法及び装置 Download PDF

Info

Publication number
JP4405663B2
JP4405663B2 JP2000376263A JP2000376263A JP4405663B2 JP 4405663 B2 JP4405663 B2 JP 4405663B2 JP 2000376263 A JP2000376263 A JP 2000376263A JP 2000376263 A JP2000376263 A JP 2000376263A JP 4405663 B2 JP4405663 B2 JP 4405663B2
Authority
JP
Japan
Prior art keywords
text
attribute
image data
resolution
edge
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP2000376263A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001274990A (ja
JP2001274990A5 (enExample
Inventor
由紀 内田
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
Publication of JP2001274990A publication Critical patent/JP2001274990A/ja
Publication of JP2001274990A5 publication Critical patent/JP2001274990A5/ja
Application granted granted Critical
Publication of JP4405663B2 publication Critical patent/JP4405663B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/40—Document-oriented image-based pattern recognition
    • G06V30/41—Analysis of document content
    • G06V30/413—Classification of content, e.g. text, photographs or tables
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/70—Denoising; Smoothing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/73—Deblurring; Sharpening
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/13—Edge detection
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image
    • G06T2207/10008—Still image; Photographic image from scanner, fax or copier
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10024—Color image
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20004—Adaptive image processing
    • G06T2207/20012—Locally adaptive
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G06T2207/20192—Edge enhancement; Edge preservation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30176—Document

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Multimedia (AREA)
  • Artificial Intelligence (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Image Input (AREA)
  • Image Analysis (AREA)
JP2000376263A 1999-12-10 2000-12-11 画像処理方法及び装置 Expired - Fee Related JP4405663B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/458941 1999-12-10
US09/458,941 US6718059B1 (en) 1999-12-10 1999-12-10 Block selection-based image processing

Publications (3)

Publication Number Publication Date
JP2001274990A JP2001274990A (ja) 2001-10-05
JP2001274990A5 JP2001274990A5 (enExample) 2008-01-31
JP4405663B2 true JP4405663B2 (ja) 2010-01-27

Family

ID=23822720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000376263A Expired - Fee Related JP4405663B2 (ja) 1999-12-10 2000-12-11 画像処理方法及び装置

Country Status (2)

Country Link
US (1) US6718059B1 (enExample)
JP (1) JP4405663B2 (enExample)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4424845B2 (ja) * 1999-12-20 2010-03-03 本田 正 イメージデータ圧縮方法及び復元方法
JP4105367B2 (ja) * 2000-05-11 2008-06-25 富士フイルム株式会社 色変換装置および色変換プログラム記憶媒体
JP2004005211A (ja) * 2002-05-31 2004-01-08 Toshiba Corp 情報処理装置
JP4387907B2 (ja) * 2003-11-21 2009-12-24 キヤノン株式会社 画像処理方法及び装置
JP2007188474A (ja) * 2005-12-12 2007-07-26 Ricoh Co Ltd ユーザインタフェース装置、項目設定方法およびプログラム
US7792359B2 (en) 2006-03-02 2010-09-07 Sharp Laboratories Of America, Inc. Methods and systems for detecting regions in digital images
US7889932B2 (en) * 2006-03-02 2011-02-15 Sharp Laboratories Of America, Inc. Methods and systems for detecting regions in digital images
US8630498B2 (en) * 2006-03-02 2014-01-14 Sharp Laboratories Of America, Inc. Methods and systems for detecting pictorial regions in digital images
JP4135752B2 (ja) * 2006-06-12 2008-08-20 コニカミノルタビジネステクノロジーズ株式会社 画像処理装置、画像処理方法及び画像処理プログラム
US8437054B2 (en) * 2006-06-15 2013-05-07 Sharp Laboratories Of America, Inc. Methods and systems for identifying regions of substantially uniform color in a digital image
US7864365B2 (en) * 2006-06-15 2011-01-04 Sharp Laboratories Of America, Inc. Methods and systems for segmenting a digital image into regions
JP4706581B2 (ja) * 2006-07-14 2011-06-22 富士ゼロックス株式会社 画像処理装置および画像形成装置
US7876959B2 (en) * 2006-09-06 2011-01-25 Sharp Laboratories Of America, Inc. Methods and systems for identifying text in digital images
US20090041344A1 (en) * 2007-08-08 2009-02-12 Richard John Campbell Methods and Systems for Determining a Background Color in a Digital Image
US8989493B1 (en) * 2012-02-06 2015-03-24 Marvell International Ltd. Method and apparatus for identifying regions of an image to be filtered during processing of the image
KR102809749B1 (ko) 2018-12-05 2025-05-20 삼성전자주식회사 에지 보전 스무딩을 수행하는 이미지 프로세싱 장치 및 이의 이미지 프로세싱 방법

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2872285B2 (ja) 1989-08-02 1999-03-17 キヤノン株式会社 画像処理装置及び画像処理方法
JPH0722330B2 (ja) 1990-01-10 1995-03-08 富士ゼロックス株式会社 画像処理装置の画像領域識別方式
EP0441586B1 (en) 1990-02-06 1996-04-24 Canon Kabushiki Kaisha Image processing apparatus
US5696842A (en) * 1991-07-04 1997-12-09 Ricoh Company, Ltd. Image processing system for adaptive coding of color document images
US5452374A (en) * 1992-04-06 1995-09-19 Ricoh Corporation Skew detection and correction of a document image representation
US5680479A (en) 1992-04-24 1997-10-21 Canon Kabushiki Kaisha Method and apparatus for character recognition
JPH0750752A (ja) 1993-08-06 1995-02-21 Fuji Xerox Co Ltd 画像密度変換方法及び装置
JP3599367B2 (ja) 1993-12-29 2004-12-08 キヤノン株式会社 画像処理装置およびその方法
US5729360A (en) 1994-01-14 1998-03-17 Fuji Xerox Co., Ltd. Color image processing method and system
US5715377A (en) 1994-07-21 1998-02-03 Matsushita Electric Industrial Co. Ltd. Gray level correction apparatus
TW367447B (en) 1994-12-21 1999-08-21 Canon Kk Block selection review and editing system
JP3343457B2 (ja) * 1994-12-22 2002-11-11 京セラミタ株式会社 画像処理装置
JPH08331398A (ja) 1995-05-31 1996-12-13 Canon Inc 画像処理システム及びコントローラ
US5774579A (en) 1995-08-11 1998-06-30 Canon Kabushiki Kaisha Block selection system in which overlapping blocks are decomposed
US5848186A (en) 1995-08-11 1998-12-08 Canon Kabushiki Kaisha Feature extraction system for identifying text within a table image
US5778092A (en) * 1996-12-20 1998-07-07 Xerox Corporation Method and apparatus for compressing color or gray scale documents
JPH11143986A (ja) * 1997-10-17 1999-05-28 Internatl Business Mach Corp <Ibm> ビットマップイメージの処理方法及び処理装置、ビットマップイメージの処理を行うイメージ処理プログラムを格納した記憶媒体

Also Published As

Publication number Publication date
US6718059B1 (en) 2004-04-06
JP2001274990A (ja) 2001-10-05

Similar Documents

Publication Publication Date Title
JP4405663B2 (ja) 画像処理方法及び装置
JP3768052B2 (ja) カラー画像処理方法、カラー画像処理装置、及びそのための記録媒体
US7724950B2 (en) Image processing apparatus, image processing method, computer program, and storage medium
CN102984429B (zh) 图像处理设备和图像处理方法
US6504949B2 (en) Image processing apparatus and method
US6377711B1 (en) Methods and systems for detecting the edges of objects in raster images using diagonal edge detection
US20030118234A1 (en) Image processing device, image processing method, program for executing image processing, and computer readable recording medium on which the program is stored
JPH05252388A (ja) ノイズ除去装置
US20090284801A1 (en) Image processing apparatus and image processing method
JPH0435167A (ja) 線画分離方法および装置
JP4424309B2 (ja) 画像処理装置、文字判定プログラム、および文字判定方法
KR101224936B1 (ko) 화상 처리 장치, 화상 형성 장치, 및 컴퓨터 판독 가능한 매체
US8345310B2 (en) Halftone frequency determination method and printing apparatus
JP4140519B2 (ja) 画像処理装置、プログラムおよび記録媒体
JP2003189096A (ja) 画像処理装置
JP4115999B2 (ja) 画像処理装置、画像形成装置、画像読取処理装置、画像処理方法、画像処理プログラムおよびコンピュータ読み取り可能な記録媒体
US6661921B2 (en) Image process apparatus, image process method and storage medium
US20100085611A1 (en) Image processing apparatus, image forming apparatus and image processing method
US20100322511A1 (en) Image processing for binarization of image data
KR20080006112A (ko) 경계 영역의 선명도를 개선하는 하프토닝 방법 및 장치
US6947595B2 (en) System for processing object areas of an image
JP2003209704A (ja) 画像処理方法、画像処理装置、画像形成装置、画像処理プログラムおよび記録媒体
JP3830350B2 (ja) カラー画像処理方法、カラー画像処理装置、プログラム、及び記録媒体
JPH11136505A (ja) 画像処理装置およびその方法
JP2010068198A (ja) 画像形成装置

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071211

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20071211

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20071211

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20080828

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090303

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090313

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090512

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20091030

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091105

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121113

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131113

Year of fee payment: 4

LAPS Cancellation because of no payment of annual fees