WO2008138356A3 - System and method for arabic omni font written optica character recognition - Google Patents

System and method for arabic omni font written optica character recognition Download PDF

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Publication number
WO2008138356A3
WO2008138356A3 PCT/EG2007/000018 EG2007000018W WO2008138356A3 WO 2008138356 A3 WO2008138356 A3 WO 2008138356A3 EG 2007000018 W EG2007000018 W EG 2007000018W WO 2008138356 A3 WO2008138356 A3 WO 2008138356A3
Authority
WO
WIPO (PCT)
Prior art keywords
character recognition
arabic
optica
omni
hmm
Prior art date
Application number
PCT/EG2007/000018
Other languages
French (fr)
Other versions
WO2008138356A2 (en
Inventor
Mohsen Abdel-Razik Ali Rashwan
Mohamed Attia Mohamed El-Araby Ahmed
Original Assignee
The Engineering Company For The Development Of Computer Systems ; (Rdi)
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 The Engineering Company For The Development Of Computer Systems ; (Rdi) filed Critical The Engineering Company For The Development Of Computer Systems ; (Rdi)
Priority to PCT/EG2007/000018 priority Critical patent/WO2008138356A2/en
Publication of WO2008138356A2 publication Critical patent/WO2008138356A2/en
Publication of WO2008138356A3 publication Critical patent/WO2008138356A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06V30/18019—Detecting partial patterns, e.g. edges or contours, or configurations, e.g. loops, corners, strokes or intersections by matching or filtering
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/20—Analysing
    • G06F18/29—Graphical models, e.g. Bayesian networks
    • G06F18/295—Markov models or related models, e.g. semi-Markov models; Markov random fields; Networks embedding Markov models
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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

Abstract

Optical character recognition system and method are disclosed for Arabic scripts. The system is based on Hidden Markov Models (HMM), an approach that has proven to be very successful in the area of automatic speech recognition. The system is divided into two subsystems, the trainer subsystem based on Hidden Markov Models (HMM) and the recognizer subsystem comprising a feature extractor (M4) providing a series of feature vectors to the vector quantizer module (M5) and using the Viterbi algorithm to recognize input bitmaps to output characters. The system uses a speciel histogram-based algorithm for lines & words decomposition.
PCT/EG2007/000018 2007-05-15 2007-05-15 System and method for arabic omni font written optica character recognition WO2008138356A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EG2007/000018 WO2008138356A2 (en) 2007-05-15 2007-05-15 System and method for arabic omni font written optica character recognition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EG2007/000018 WO2008138356A2 (en) 2007-05-15 2007-05-15 System and method for arabic omni font written optica character recognition

Publications (2)

Publication Number Publication Date
WO2008138356A2 WO2008138356A2 (en) 2008-11-20
WO2008138356A3 true WO2008138356A3 (en) 2009-09-24

Family

ID=40002673

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EG2007/000018 WO2008138356A2 (en) 2007-05-15 2007-05-15 System and method for arabic omni font written optica character recognition

Country Status (1)

Country Link
WO (1) WO2008138356A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8111911B2 (en) * 2009-04-27 2012-02-07 King Abdulaziz City For Science And Technology System and methods for arabic text recognition based on effective arabic text feature extraction
EP2662802A1 (en) * 2012-05-09 2013-11-13 King Abdulaziz City for Science & Technology (KACST) Method and system for preprocessing an image for optical character recognition
JP5986051B2 (en) * 2013-05-12 2016-09-06 キング・アブドゥルアジズ・シティ・フォー・サイエンス・アンド・テクノロジー（ケイ・エイ・シィ・エス・ティ）Ｋｉｎｇ Ａｂｄｕｌａｚｉｚ Ｃｉｔｙ Ｆｏｒ Ｓｃｉｅｎｃｅ Ａｎｄ Ｔｅｃｈｎｏｌｏｇｙ （Ｋａｃｓｔ） Method for automatically recognizing Arabic text
US9014481B1 (en) 2014-04-22 2015-04-21 King Fahd University Of Petroleum And Minerals Method and apparatus for Arabic and Farsi font recognition
US9501708B1 (en) 2015-09-10 2016-11-22 King Fahd University Of Petroleum And Minerals Adaptive sliding windows for text recognition
CN109255113B (en) * 2018-09-04 2022-10-11 郑州信大壹密科技有限公司 Intelligent proofreading system
US11270153B2 (en) 2020-02-19 2022-03-08 Northrop Grumman Systems Corporation System and method for whole word conversion of text in image

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933525A (en) * 1996-04-10 1999-08-03 Bbn Corporation Language-independent and segmentation-free optical character recognition system and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933525A (en) * 1996-04-10 1999-08-03 Bbn Corporation Language-independent and segmentation-free optical character recognition system and method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Computational Intelligence for Measurement Systems and Applications, CIMSA 2004 IEEE International Conference on Boston, MA, USA", 14 July 2004, article GOUDA ET AL.: "Segmentation of connected arabic characters using hidden Markov models", pages: 115 - 119, XP010773387 *
"Document Image Analysis for Libraries, 2006. DIAL '06. Second International Conference on Lyon, France", 27 April 2006, article NADIA BEN AMOR ET AL.: "Combining a hybrid Approach for Features Selection and Hidden Markov Models in Multifont Arabic Characters Recognition", pages: 103 - 107, XP010912514 *

Also Published As

Publication number Publication date
WO2008138356A2 (en) 2008-11-20

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