JP6062791B2 - 尤度最大化を用いたナンバープレートの文字分割 - Google Patents

尤度最大化を用いたナンバープレートの文字分割 Download PDF

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JP6062791B2
JP6062791B2 JP2013090020A JP2013090020A JP6062791B2 JP 6062791 B2 JP6062791 B2 JP 6062791B2 JP 2013090020 A JP2013090020 A JP 2013090020A JP 2013090020 A JP2013090020 A JP 2013090020A JP 6062791 B2 JP6062791 B2 JP 6062791B2
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license plate
model
layout
likelihood
distribution
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JP2013235577A5 (enExample
JP2013235577A (ja
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ヅィガン・ファン
ヨンフイ・チャオ
アーロン・マイケル・バリー
ウラディーミル・コジーツキー
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Xerox Corp
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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
    • G06V20/63—Scene text, e.g. street names
    • 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
    • G06V20/625—License plates

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)
  • Traffic Control Systems (AREA)
  • Image Analysis (AREA)
JP2013090020A 2012-05-04 2013-04-23 尤度最大化を用いたナンバープレートの文字分割 Expired - Fee Related JP6062791B2 (ja)

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US13/464,357 US9014432B2 (en) 2012-05-04 2012-05-04 License plate character segmentation using likelihood maximization
US13/464,357 2012-05-04

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JP2013235577A5 JP2013235577A5 (enExample) 2016-06-16
JP6062791B2 true JP6062791B2 (ja) 2017-01-18

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Families Citing this family (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013072862A1 (en) * 2011-11-14 2013-05-23 Université Du Sud Toulon-Var Method for segmenting a source image
US10146795B2 (en) 2012-01-12 2018-12-04 Kofax, Inc. Systems and methods for mobile image capture and processing
US9158967B2 (en) 2012-01-12 2015-10-13 Kofax, Inc. Systems and methods for mobile image capture and processing
US9292759B2 (en) 2012-05-07 2016-03-22 Xerox Corporation Methods and systems for optimized parameter selection in automated license plate recognition
US9208550B2 (en) * 2012-08-15 2015-12-08 Fuji Xerox Co., Ltd. Smart document capture based on estimated scanned-image quality
US10127636B2 (en) 2013-09-27 2018-11-13 Kofax, Inc. Content-based detection and three dimensional geometric reconstruction of objects in image and video data
US9213910B2 (en) 2013-11-06 2015-12-15 Xerox Corporation Reinforcement learning approach to character level segmentation of license plate images
US10579892B1 (en) 2014-06-27 2020-03-03 Blinker, Inc. Method and apparatus for recovering license plate information from an image
US9589201B1 (en) 2014-06-27 2017-03-07 Blinker, Inc. Method and apparatus for recovering a vehicle value from an image
US9563814B1 (en) 2014-06-27 2017-02-07 Blinker, Inc. Method and apparatus for recovering a vehicle identification number from an image
US9600733B1 (en) 2014-06-27 2017-03-21 Blinker, Inc. Method and apparatus for receiving car parts data from an image
US9818154B1 (en) 2014-06-27 2017-11-14 Blinker, Inc. System and method for electronic processing of vehicle transactions based on image detection of vehicle license plate
US9589202B1 (en) 2014-06-27 2017-03-07 Blinker, Inc. Method and apparatus for receiving an insurance quote from an image
US10572758B1 (en) 2014-06-27 2020-02-25 Blinker, Inc. Method and apparatus for receiving a financing offer from an image
US10733471B1 (en) 2014-06-27 2020-08-04 Blinker, Inc. Method and apparatus for receiving recall information from an image
US9594971B1 (en) 2014-06-27 2017-03-14 Blinker, Inc. Method and apparatus for receiving listings of similar vehicles from an image
US9892337B1 (en) 2014-06-27 2018-02-13 Blinker, Inc. Method and apparatus for receiving a refinancing offer from an image
US10867327B1 (en) 2014-06-27 2020-12-15 Blinker, Inc. System and method for electronic processing of vehicle transactions based on image detection of vehicle license plate
US9779318B1 (en) 2014-06-27 2017-10-03 Blinker, Inc. Method and apparatus for verifying vehicle ownership from an image
US9558419B1 (en) 2014-06-27 2017-01-31 Blinker, Inc. Method and apparatus for receiving a location of a vehicle service center from an image
US9760776B1 (en) 2014-06-27 2017-09-12 Blinker, Inc. Method and apparatus for obtaining a vehicle history report from an image
US10540564B2 (en) 2014-06-27 2020-01-21 Blinker, Inc. Method and apparatus for identifying vehicle information from an image
US9754171B1 (en) 2014-06-27 2017-09-05 Blinker, Inc. Method and apparatus for receiving vehicle information from an image and posting the vehicle information to a website
US9773184B1 (en) 2014-06-27 2017-09-26 Blinker, Inc. Method and apparatus for receiving a broadcast radio service offer from an image
US10515285B2 (en) 2014-06-27 2019-12-24 Blinker, Inc. Method and apparatus for blocking information from an image
US9607236B1 (en) 2014-06-27 2017-03-28 Blinker, Inc. Method and apparatus for providing loan verification from an image
US9384391B2 (en) 2014-10-03 2016-07-05 Xerox Corporation Methods and systems for processing documents
US9760788B2 (en) 2014-10-30 2017-09-12 Kofax, Inc. Mobile document detection and orientation based on reference object characteristics
KR102349059B1 (ko) * 2014-11-07 2022-01-10 삼성전자주식회사 영상의 관심영역으로부터 랜드마크를 결정하는 장치 및 방법
CN105678207A (zh) * 2014-11-19 2016-06-15 富士通株式会社 用于从给定图像中识别目标铭板图像的内容的装置和方法
US9405985B1 (en) 2015-03-17 2016-08-02 Xerox Corporation Leveraging character-by-character image classifiers to improve license plate state identification
CN104834937B (zh) * 2015-04-28 2018-07-17 安徽清新互联信息科技有限公司 一种基于Bayes的车牌颜色判断方法
US9418305B1 (en) * 2015-04-29 2016-08-16 Xerox Corporation Segmentation free approach to automatic license plate recognition
KR101648701B1 (ko) * 2015-06-26 2016-08-17 렉스젠(주) 차량 번호 판독 장치 및 그 방법
US10467465B2 (en) 2015-07-20 2019-11-05 Kofax, Inc. Range and/or polarity-based thresholding for improved data extraction
US10242285B2 (en) * 2015-07-20 2019-03-26 Kofax, Inc. Iterative recognition-guided thresholding and data extraction
WO2017088478A1 (zh) * 2015-11-24 2017-06-01 乐视控股（北京）有限公司 数字分离方法及装置
CN105575126A (zh) * 2015-12-16 2016-05-11 深圳市捷顺科技实业股份有限公司 一种车牌识别系统与方法
US10235585B2 (en) * 2016-04-11 2019-03-19 The Nielsen Company (US) Methods and apparatus to determine the dimensions of a region of interest of a target object from an image using target object landmarks
CN108877229A (zh) * 2017-05-09 2018-11-23 深圳市赛菲姆科技有限公司 一种实现脱机收费的车牌识别摄像机及方法
CN109697386B (zh) * 2017-10-23 2020-07-17 杭州海康威视数字技术股份有限公司 一种车牌识别方法、装置及电子设备
US11062176B2 (en) 2017-11-30 2021-07-13 Kofax, Inc. Object detection and image cropping using a multi-detector approach
WO2019140434A2 (en) * 2018-01-15 2019-07-18 President And Fellows Of Harvard College Overlapping pattern differentiation at low signal-to-noise ratio
US11030466B2 (en) * 2018-02-11 2021-06-08 Nortek Security & Control Llc License plate detection and recognition system
CN110276342B (zh) * 2018-03-14 2023-04-18 台达电子工业股份有限公司 车牌辨识方法以及其系统
CN109492645A (zh) * 2018-11-01 2019-03-19 湖南文理学院 一种车牌字符分割方法和装置
EP3948646A4 (en) 2019-03-28 2022-11-09 The Nielsen Company (US), LLC. METHODS AND APPARATUS FOR DETECTING A TEXT REGION OF INTEREST IN A DIGITAL IMAGE USING MACHINE-BASED ANALYSIS
US11410446B2 (en) 2019-11-22 2022-08-09 Nielsen Consumer Llc Methods, systems, apparatus and articles of manufacture for receipt decoding
US11810380B2 (en) 2020-06-30 2023-11-07 Nielsen Consumer Llc Methods and apparatus to decode documents based on images using artificial intelligence
EP3933692A1 (en) * 2020-07-03 2022-01-05 Robert Bosch GmbH An image classifier comprising a non-injective transformation
US20220114821A1 (en) 2020-07-17 2022-04-14 Nielsen Consumer Llc Methods, systems, articles of manufacture and apparatus to categorize image text
CN112504140B (zh) * 2020-11-20 2022-10-04 上海电科智能系统股份有限公司 基于俯视深度相机的物体探测方法
CN113392839B (zh) * 2021-05-18 2023-07-28 浙江大华技术股份有限公司 非机动车车牌识别方法、装置、计算机设备和存储介质
CN113313115B (zh) * 2021-06-11 2023-08-04 浙江商汤科技开发有限公司 车牌属性识别方法及装置、电子设备和存储介质
US11822216B2 (en) 2021-06-11 2023-11-21 Nielsen Consumer Llc Methods, systems, apparatus, and articles of manufacture for document scanning
US12327425B2 (en) 2021-06-24 2025-06-10 Nielsen Consumer Llc Methods, systems, articles of manufacture, and apparatus for decoding purchase data using an image
US12229741B2 (en) 2021-06-24 2025-02-18 Nielsen Consumer Llc Methods, systems, articles of manufacture, and apparatus for decoding purchase data using an image
US11625930B2 (en) 2021-06-30 2023-04-11 Nielsen Consumer Llc Methods, systems, articles of manufacture and apparatus to decode receipts based on neural graph architecture
US12175782B2 (en) 2021-07-12 2024-12-24 Nielsen Consumer Llc Methods, systems, articles of manufacture and apparatus to label text on images
US12288405B2 (en) 2021-12-22 2025-04-29 Nielsen Consumer Llc Methods, systems, articles of manufacture and apparatus to extract region of interest text from receipts
US12229805B2 (en) 2021-12-30 2025-02-18 Nielsen Consumer Llc Methods, systems, articles of manufacture, and apparatus for processing an image using visual and textual information
US12315283B2 (en) 2022-01-14 2025-05-27 Nielsen Consumer Llc Methods, systems, articles of manufacture, and apparatus for decoding images
US12322195B2 (en) 2022-07-06 2025-06-03 Nielsen Consumer Llc Methods, systems, articles of manufacture, and apparatus to determine related content in a document
CN115187977A (zh) * 2022-07-15 2022-10-14 苏州清研精准汽车科技有限公司 一种车牌数据集动态创建方法及系统、电子设备
CN119107257B (zh) * 2024-08-08 2025-06-17 北京卓视智通科技有限责任公司 一种残缺车牌图像的恢复方法、系统、设备及介质

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2893814B2 (ja) * 1990-03-15 1999-05-24 住友電気工業株式会社 車番自動読取装置におけるプレート切出し装置
JPH0520497A (ja) * 1991-07-16 1993-01-29 Matsushita Electric Ind Co Ltd ナンバープレート文字切り出し装置
SG71018A1 (en) * 1997-03-01 2000-03-21 Inst Of Systems Science Nat Un Robust identification code recognition system
JP2002342880A (ja) * 2001-05-18 2002-11-29 Hitachi Eng Co Ltd 車番認識装置
JP2005322146A (ja) * 2004-05-11 2005-11-17 Mitsubishi Electric Corp ナンバープレート読取装置
JP4587038B2 (ja) * 2005-05-25 2010-11-24 住友電気工業株式会社 車両位置検出方法、並びに車両速度検出方法及び装置
US20070058856A1 (en) * 2005-09-15 2007-03-15 Honeywell International Inc. Character recoginition in video data

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US9014432B2 (en) 2015-04-21
DE102013207484B4 (de) 2025-04-24
US20130294652A1 (en) 2013-11-07
JP2013235577A (ja) 2013-11-21
DE102013207484A1 (de) 2013-11-07

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