ES2773719T3 - Mejora de texto de una imagen textual sometida a un reconocimiento óptico de caracteres - Google Patents

Mejora de texto de una imagen textual sometida a un reconocimiento óptico de caracteres Download PDF

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Publication number
ES2773719T3
ES2773719T3 ES11753880T ES11753880T ES2773719T3 ES 2773719 T3 ES2773719 T3 ES 2773719T3 ES 11753880 T ES11753880 T ES 11753880T ES 11753880 T ES11753880 T ES 11753880T ES 2773719 T3 ES2773719 T3 ES 2773719T3
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Spain
Prior art keywords
image
pixels
text
intensity
foreground
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ES11753880T
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English (en)
Spanish (es)
Inventor
Sasa Galic
Djordje Nijemcevic
Bodin Dresevic
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Zhigu Holdings Ltd
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Zhigu Holdings Ltd
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Publication of ES2773719T3 publication Critical patent/ES2773719T3/es
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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

Landscapes

  • 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 Processing (AREA)
  • Image Analysis (AREA)
ES11753880T 2010-03-10 2011-03-07 Mejora de texto de una imagen textual sometida a un reconocimiento óptico de caracteres Active ES2773719T3 (es)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
ES2773719T3 true ES2773719T3 (es) 2020-07-14

Family

ID=44560016

Family Applications (1)

Application Number Title Priority Date Filing Date
ES11753880T Active ES2773719T3 (es) 2010-03-10 2011-03-07 Mejora de texto de una imagen textual sometida a un reconocimiento óptico de caracteres

Country Status (8)

Country Link
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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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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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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Also Published As

Publication number Publication date
WO2011112522A2 (en) 2011-09-15
EP2545499A4 (en) 2017-08-30
JP5754065B2 (ja) 2015-07-22
CA2790402A1 (en) 2011-09-15
KR20130016213A (ko) 2013-02-14
US20110222768A1 (en) 2011-09-15
EP2545499A2 (en) 2013-01-16
WO2011112522A3 (en) 2011-11-03
KR101795823B1 (ko) 2017-11-08
US8526732B2 (en) 2013-09-03
CN102782706B (zh) 2014-07-23
EP2545499B1 (en) 2020-01-08
CN102782706A (zh) 2012-11-14
JP2013527513A (ja) 2013-06-27

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