BR112022017234A2 - Sistemas e métodos para calibrar módulos de captura de imagem - Google Patents

Sistemas e métodos para calibrar módulos de captura de imagem

Info

Publication number
BR112022017234A2
BR112022017234A2 BR112022017234A BR112022017234A BR112022017234A2 BR 112022017234 A2 BR112022017234 A2 BR 112022017234A2 BR 112022017234 A BR112022017234 A BR 112022017234A BR 112022017234 A BR112022017234 A BR 112022017234A BR 112022017234 A2 BR112022017234 A2 BR 112022017234A2
Authority
BR
Brazil
Prior art keywords
drum
target
image
image capture
pixels
Prior art date
Application number
BR112022017234A
Other languages
English (en)
Inventor
R Krueger Darrell
Smitley Garrett
Original Assignee
Bnsf Railway Co
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 Bnsf Railway Co filed Critical Bnsf Railway Co
Publication of BR112022017234A2 publication Critical patent/BR112022017234A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/97—Determining parameters from multiple pictures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30248—Vehicle exterior or interior
    • G06T2207/30252—Vehicle exterior; Vicinity of vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Traffic Control Systems (AREA)
  • Endoscopes (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Image Analysis (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

SISTEMAS E MÉTODOS PARA CALIBRAR MÓDULOS DE CAPTURA DE IMAGEM. Em uma modalidade, um método inclui capturar, por uma câmera de um módulo de captura de imagem, uma primeira imagem de um alvo. O módulo de captura de imagem e um tambor são fixados a um acessório e o alvo é fixado ao tambor. O método também inclui determinar um número de pixels laterais em uma distância de passo lateral da imagem do alvo, determinar um tamanho de pixel de objeto lateral com base no número de pixels laterais, e determinar uma taxa de codificador de tambor com base no tamanho de pixel de objeto lateral. A taxa de codificador de tambor é programada em um codificador de tambor. O método inclui adicionalmente capturar, pela câmera, uma segunda imagem do alvo enquanto o alvo é girado em torno de um eixo do tambor, determinar um número de pixels longitudinais em uma distância de passo longitudinal da segunda imagem, e comparar o número de pixels laterais com o número de pixels longitudinais.
BR112022017234A 2020-03-12 2021-02-25 Sistemas e métodos para calibrar módulos de captura de imagem BR112022017234A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/816,525 US11270466B2 (en) 2020-03-12 2020-03-12 Systems and methods for calibrating image capturing modules
PCT/US2021/019503 WO2021183289A1 (en) 2020-03-12 2021-02-25 Systems and methods for calibrating image capturing modules

Publications (1)

Publication Number Publication Date
BR112022017234A2 true BR112022017234A2 (pt) 2022-10-11

Family

ID=74875376

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022017234A BR112022017234A2 (pt) 2020-03-12 2021-02-25 Sistemas e métodos para calibrar módulos de captura de imagem

Country Status (10)

Country Link
US (3) US11270466B2 (pt)
EP (1) EP4118819A1 (pt)
JP (2) JP7465419B2 (pt)
KR (1) KR102669397B1 (pt)
CN (1) CN115299042A (pt)
AU (1) AU2021235491A1 (pt)
BR (1) BR112022017234A2 (pt)
CA (1) CA3165795A1 (pt)
MX (1) MX2022009403A (pt)
WO (1) WO2021183289A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11508055B2 (en) 2018-11-20 2022-11-22 Bnsf Railway Company Systems and methods for calibrating image capturing modules
WO2023183115A1 (en) * 2022-03-23 2023-09-28 Bnsf Railway Company Systems and methods for calibrating image capturing modules

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722762A1 (de) 1997-06-02 1998-12-03 Heidelberger Druckmasch Ag Verfahren zur Erzeugung eines Probeschnitts
DE10323915A1 (de) * 2003-05-23 2005-02-03 Daimlerchrysler Ag Kamerabasierte Positionserkennung für ein Straßenfahrzeug
JP6009894B2 (ja) * 2012-10-02 2016-10-19 株式会社デンソー キャリブレーション方法、及びキャリブレーション装置
DE102014209137B4 (de) * 2014-05-14 2023-02-02 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zur Kalibrierung eines Kamerasystems eines Kraftfahrzeugs
JP6263461B2 (ja) * 2014-09-26 2018-01-17 日立オートモティブシステムズ株式会社 撮像装置
CN106023213A (zh) 2016-05-24 2016-10-12 上海海事大学 一种基于圆柱面的多摄像机系统标定方法
JP6707022B2 (ja) * 2016-12-26 2020-06-10 日立オートモティブシステムズ株式会社 ステレオカメラ
WO2019023658A1 (en) 2017-07-28 2019-01-31 Ensco, Inc. SYSTEMS AND METHODS FOR VISUALIZING AND ANALYZING A RAIL SURFACE
US20200231193A1 (en) 2017-07-28 2020-07-23 Ensco, Inc. Systems and methods for inspecting a railroad track
JP6947112B2 (ja) 2018-04-20 2021-10-13 トヨタ自動車株式会社 キャリブレーション方法
CN108765494B (zh) 2018-05-21 2021-12-24 南昌航空大学 一种基于圆柱体标定物的多相机标定方法

Also Published As

Publication number Publication date
US20240193814A1 (en) 2024-06-13
US11908165B2 (en) 2024-02-20
AU2021235491A1 (en) 2022-08-18
US20220084248A1 (en) 2022-03-17
JP7465419B2 (ja) 2024-04-11
CA3165795A1 (en) 2021-09-16
JP2024061745A (ja) 2024-05-08
WO2021183289A1 (en) 2021-09-16
US20210287402A1 (en) 2021-09-16
JP2023517979A (ja) 2023-04-27
CN115299042A (zh) 2022-11-04
US11270466B2 (en) 2022-03-08
MX2022009403A (es) 2022-08-25
EP4118819A1 (en) 2023-01-18
KR102669397B1 (ko) 2024-05-28
KR20220128411A (ko) 2022-09-20

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