CN102782706B - 经历光学字符识别的文本图像的文本增强 - Google Patents

经历光学字符识别的文本图像的文本增强 Download PDF

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CN102782706B
CN102782706B CN201180013195.8A CN201180013195A CN102782706B CN 102782706 B CN102782706 B CN 102782706B CN 201180013195 A CN201180013195 A CN 201180013195A CN 102782706 B CN102782706 B CN 102782706B
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text
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CN102782706A (zh
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S.加利奇
D.尼耶姆塞维奇
B.德雷塞维奇
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Ivalley Holding Co Ltd
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Microsoft Corp
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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)
CN201180013195.8A 2010-03-10 2011-03-07 经历光学字符识别的文本图像的文本增强 Active CN102782706B (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
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
US12/720732 2010-03-10
PCT/US2011/027439 WO2011112522A2 (en) 2010-03-10 2011-03-07 Text enhancement of a textual image undergoing optical character recognition

Publications (2)

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CN102782706A CN102782706A (zh) 2012-11-14
CN102782706B true CN102782706B (zh) 2014-07-23

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

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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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Publication number Publication date
US20110222768A1 (en) 2011-09-15
WO2011112522A3 (en) 2011-11-03
KR20130016213A (ko) 2013-02-14
JP5754065B2 (ja) 2015-07-22
US8526732B2 (en) 2013-09-03
JP2013527513A (ja) 2013-06-27
ES2773719T3 (es) 2020-07-14
EP2545499A2 (en) 2013-01-16
EP2545499B1 (en) 2020-01-08
CN102782706A (zh) 2012-11-14
WO2011112522A2 (en) 2011-09-15
KR101795823B1 (ko) 2017-11-08
EP2545499A4 (en) 2017-08-30
CA2790402A1 (en) 2011-09-15

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