JP5775225B2 - マルチレイヤ連結成分をヒストグラムと共に用いるテキスト検出 - Google Patents

マルチレイヤ連結成分をヒストグラムと共に用いるテキスト検出 Download PDF

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JP5775225B2
JP5775225B2 JP2014537674A JP2014537674A JP5775225B2 JP 5775225 B2 JP5775225 B2 JP 5775225B2 JP 2014537674 A JP2014537674 A JP 2014537674A JP 2014537674 A JP2014537674 A JP 2014537674A JP 5775225 B2 JP5775225 B2 JP 5775225B2
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spatial
bins
histogram
bin
connected components
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Japanese (ja)
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JP2014531097A (ja
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シャン−シュアン ツァイ
シャン−シュアン ツァイ
ヴァスデーヴ パラメスワラン
ヴァスデーヴ パラメスワラン
ラデク グジェシュチャク
ラデク グジェシュチャク
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Nokia Oyj
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Nokia Oyj
Nokia Inc
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/60—Type of objects
    • G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/26—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
    • 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
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/1801—Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes or intersections
    • G06V30/18076—Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes or intersections by analysing connectivity, e.g. edge linking, connected component analysis or slices
    • 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
    • G06V30/10—Character recognition

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Analysis (AREA)
  • Character Input (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
JP2014537674A 2011-11-21 2012-10-17 マルチレイヤ連結成分をヒストグラムと共に用いるテキスト検出 Expired - Fee Related JP5775225B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13/301,103 2011-11-21
US13/301,103 US8611662B2 (en) 2011-11-21 2011-11-21 Text detection using multi-layer connected components with histograms
PCT/FI2012/050994 WO2013076358A1 (en) 2011-11-21 2012-10-17 Text detection using multi-layer connected components with histograms

Publications (2)

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JP2014531097A JP2014531097A (ja) 2014-11-20
JP5775225B2 true JP5775225B2 (ja) 2015-09-09

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Country Status (7)

Country Link
US (1) US8611662B2 (enExample)
EP (1) EP2783328B1 (enExample)
JP (1) JP5775225B2 (enExample)
KR (1) KR101617681B1 (enExample)
CN (1) CN103946866B (enExample)
IN (1) IN2014CN04624A (enExample)
WO (1) WO2013076358A1 (enExample)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8731296B2 (en) * 2011-04-21 2014-05-20 Seiko Epson Corporation Contact text detection in scanned images
US9064191B2 (en) 2012-01-26 2015-06-23 Qualcomm Incorporated Lower modifier detection and extraction from devanagari text images to improve OCR performance
US9053361B2 (en) 2012-01-26 2015-06-09 Qualcomm Incorporated Identifying regions of text to merge in a natural image or video frame
US9076242B2 (en) 2012-07-19 2015-07-07 Qualcomm Incorporated Automatic correction of skew in natural images and video
US9183458B2 (en) * 2012-07-19 2015-11-10 Qualcomm Incorporated Parameter selection and coarse localization of interest regions for MSER processing
US9262699B2 (en) 2012-07-19 2016-02-16 Qualcomm Incorporated Method of handling complex variants of words through prefix-tree based decoding for Devanagiri OCR
US9141874B2 (en) 2012-07-19 2015-09-22 Qualcomm Incorporated Feature extraction and use with a probability density function (PDF) divergence metric
US9047540B2 (en) 2012-07-19 2015-06-02 Qualcomm Incorporated Trellis based word decoder with reverse pass
US9047528B1 (en) * 2013-02-19 2015-06-02 Amazon Technologies, Inc. Identifying characters in grid-based text
US9928572B1 (en) 2013-12-20 2018-03-27 Amazon Technologies, Inc. Label orientation
US9460357B2 (en) * 2014-01-08 2016-10-04 Qualcomm Incorporated Processing text images with shadows
US9858304B2 (en) * 2014-04-15 2018-01-02 Raytheon Company Computing cross-correlations for sparse data
US9183636B1 (en) * 2014-04-16 2015-11-10 I.R.I.S. Line segmentation method
CN104182750B (zh) * 2014-07-14 2017-08-01 上海交通大学 一种在自然场景图像中基于极值连通域的中文检测方法
WO2016014020A1 (en) 2014-07-21 2016-01-28 Hewlett-Packard Development Company, L.P. Radial histogram matching
US9235757B1 (en) * 2014-07-24 2016-01-12 Amazon Technologies, Inc. Fast text detection
CN104751147A (zh) * 2015-04-16 2015-07-01 成都汇智远景科技有限公司 一种图像识别方法
CN104766095A (zh) * 2015-04-16 2015-07-08 成都汇智远景科技有限公司 一种移动终端图像识别方法
US9471990B1 (en) * 2015-10-20 2016-10-18 Interra Systems, Inc. Systems and methods for detection of burnt-in text in a video
US10083353B2 (en) * 2016-10-28 2018-09-25 Intuit Inc. Identifying document forms using digital fingerprints
CN107688806B (zh) * 2017-08-21 2021-04-20 西北工业大学 一种基于仿射变换的自由场景文本检测方法
CN108985288B (zh) * 2018-07-17 2022-06-14 电子科技大学 一种基于TGMSERs的SAR图像溢油检测方法
CN110008950A (zh) * 2019-03-13 2019-07-12 南京大学 一种对形状鲁棒的自然场景中文本检测的方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6413687A (en) * 1987-07-07 1989-01-18 Nec Corp System for detecting character row
US5920655A (en) 1995-02-10 1999-07-06 Canon Kabushiki Kaisha Binarization image processing for multi-level image data
JP3868654B2 (ja) * 1998-03-27 2007-01-17 株式会社リコー 画像処理装置
JP4418726B2 (ja) * 2004-10-01 2010-02-24 日本電信電話株式会社 文字列探索装置、探索方法およびこの方法のプログラム
US7570816B2 (en) 2005-03-31 2009-08-04 Microsoft Corporation Systems and methods for detecting text
CN100565559C (zh) * 2007-03-14 2009-12-02 中国科学院自动化研究所 基于连通分量和支持向量机的图像文本定位方法和装置
CN101615252B (zh) * 2008-06-25 2012-07-04 中国科学院自动化研究所 一种自适应图像文本信息提取方法
US8189917B2 (en) 2008-09-25 2012-05-29 Sharp Laboratories Of America, Inc. Methods and systems for locating text in a digital image
CN102163284B (zh) * 2011-04-11 2013-02-27 西安电子科技大学 面向中文环境的复杂场景文本定位方法

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Publication number Publication date
CN103946866A (zh) 2014-07-23
US20130129216A1 (en) 2013-05-23
EP2783328B1 (en) 2018-08-22
WO2013076358A1 (en) 2013-05-30
KR20140091762A (ko) 2014-07-22
JP2014531097A (ja) 2014-11-20
CN103946866B (zh) 2018-06-01
KR101617681B1 (ko) 2016-05-11
EP2783328A1 (en) 2014-10-01
EP2783328A4 (en) 2016-09-28
US8611662B2 (en) 2013-12-17
IN2014CN04624A (enExample) 2015-09-18

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