KR101795823B1 - 광학 문자 인식되는 텍스트 영상의 텍스트 개선 기법 - Google Patents

광학 문자 인식되는 텍스트 영상의 텍스트 개선 기법 Download PDF

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KR101795823B1
KR101795823B1 KR1020127023496A KR20127023496A KR101795823B1 KR 101795823 B1 KR101795823 B1 KR 101795823B1 KR 1020127023496 A KR1020127023496 A KR 1020127023496A KR 20127023496 A KR20127023496 A KR 20127023496A KR 101795823 B1 KR101795823 B1 KR 101795823B1
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KR20130016213A (ko
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사사 갈릭
드조르드제 니젬체빅
보딘 드레세빅
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지구 홀딩스 리미티드
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
    • G06V10/457—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components 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
    • G06V30/16—Image preprocessing
    • G06V30/162—Quantising the image signal
    • 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
    • G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
    • 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
    • G06V2201/00—Indexing scheme relating to image or video recognition or understanding
    • G06V2201/01—Solutions for problems related to non-uniform document background
    • 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)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Character Input (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
KR1020127023496A 2010-03-10 2011-03-07 광학 문자 인식되는 텍스트 영상의 텍스트 개선 기법 Active KR101795823B1 (ko)

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US12/720,732 US8526732B2 (en) 2010-03-10 2010-03-10 Text enhancement of a textual image undergoing optical character recognition
US12/720,732 2010-03-10
PCT/US2011/027439 WO2011112522A2 (en) 2010-03-10 2011-03-07 Text enhancement of a textual image undergoing optical character recognition

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KR20130016213A KR20130016213A (ko) 2013-02-14
KR101795823B1 true KR101795823B1 (ko) 2017-11-08

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US (1) US8526732B2 (enExample)
EP (1) EP2545499B1 (enExample)
JP (1) JP5754065B2 (enExample)
KR (1) KR101795823B1 (enExample)
CN (1) CN102782706B (enExample)
CA (1) CA2790402A1 (enExample)
ES (1) ES2773719T3 (enExample)
WO (1) WO2011112522A2 (enExample)

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CN110533049B (zh) * 2018-05-23 2023-05-02 富士通株式会社 提取印章图像的方法和装置
CN111986095B (zh) * 2019-05-22 2024-03-19 上海哔哩哔哩科技有限公司 基于边缘提取的图像处理方法及图像处理装置
CN111080554B (zh) * 2019-12-20 2023-08-04 成都极米科技股份有限公司 一种投影内容中字幕区域增强方法、装置及可读存储介质
US11205084B2 (en) * 2020-02-17 2021-12-21 Wipro Limited Method and system for evaluating an image quality for optical character recognition (OCR)
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CN111507352B (zh) * 2020-04-16 2021-09-28 腾讯科技（深圳）有限公司 一种图像处理方法、装置、计算机设备以及存储介质
CN111753832B (zh) * 2020-07-02 2023-12-08 杭州睿琪软件有限公司 图像处理方法、图像处理装置、电子设备和存储介质
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CA2790402A1 (en) 2011-09-15
JP2013527513A (ja) 2013-06-27
WO2011112522A3 (en) 2011-11-03
US8526732B2 (en) 2013-09-03
EP2545499B1 (en) 2020-01-08
ES2773719T3 (es) 2020-07-14
WO2011112522A2 (en) 2011-09-15
EP2545499A2 (en) 2013-01-16
KR20130016213A (ko) 2013-02-14
JP5754065B2 (ja) 2015-07-22
CN102782706A (zh) 2012-11-14
CN102782706B (zh) 2014-07-23
EP2545499A4 (en) 2017-08-30
US20110222768A1 (en) 2011-09-15

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