EP4127670A1 - Procédé de reconnaissance de surfaces - Google Patents

Procédé de reconnaissance de surfaces

Info

Publication number
EP4127670A1
EP4127670A1 EP21710597.2A EP21710597A EP4127670A1 EP 4127670 A1 EP4127670 A1 EP 4127670A1 EP 21710597 A EP21710597 A EP 21710597A EP 4127670 A1 EP4127670 A1 EP 4127670A1
Authority
EP
European Patent Office
Prior art keywords
image
camera
detail
prominent
video stream
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP21710597.2A
Other languages
German (de)
English (en)
Inventor
Kai Zeh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
4Art Holding AG
Original Assignee
4Art Holding AG
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 4Art Holding AG filed Critical 4Art Holding AG
Publication of EP4127670A1 publication Critical patent/EP4127670A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/018—Certifying business or products
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/40—Scenes; Scene-specific elements in video content
    • G06V20/48—Matching video sequences
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/80—Recognising image objects characterised by unique random patterns
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/2033—Matching unique patterns, i.e. patterns that are unique to each individual paper
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/206—Matching template patterns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
    • G01N2021/95615—Inspecting patterns on the surface of objects using a comparative method with stored comparision signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/02—Mechanical
    • G01N2201/022—Casings
    • G01N2201/0221—Portable; cableless; compact; hand-held
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/061—Sources
    • G01N2201/0616—Ambient light is used
    • 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
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/95—Pattern authentication; Markers therefor; Forgery detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/4728—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region

Definitions

  • the invention relates to a method for the recognition of surfaces, in particular for the optical detection of structured and / or pictorial surfaces, for example of paintings or sculptures.
  • Another stationary optical device for detecting surfaces of a component is described in DE 102008018586 A1.
  • Two light sources and a camera device are provided, the camera receiving the light beams of the light sources reflected on the surfaces of the component in order to generate an image of the surfaces.
  • FIG. 2 the camera according to FIG. 1 with a glare protection.
  • the camera 5 is focused if, for example, there is no refocusing of the lens of the camera 5 within approx. 0.5 seconds.
  • the physical position of the lens of the objective is continuously monitored. As far as the average of the obtained lens positions of the lens of the camera 5 from the last approx. 0.5 seconds corresponds to the next obtained lens position, the camera 5 is classified as focused and triggered by the software of the mobile device 4.
  • Each individual image of the live video stream is sent to a subroutine in the control electronics for processing (individual frames can be left unprocessed, to the detriment of accuracy).
  • High-contrast image points 3 are identified in each image to be processed. Colors, contrasts, distances and / or depths of structures are automatically determined. These image points 3 are surrounded by significantly more or less intense image points.
  • Geometric shapes are then projected using the high-contrast image points 3 identified. These pixels 3 form the corners of the projected geometric figures.
  • the number, the positions and the sizes of the geometric figures are stored in a data record for each image.
  • the target image or target image that is to be found in the video stream is processed.
  • the data records of the target image and the single image with the highest level of detail are compared with one another. If the target image is found in the individual image of the video, this can be determined by comparing the data sets.
  • the number of projected geometric figures indicates the depth of detail in an image.
  • the image with the highest level of detail, ie the greatest number of details, is selected for further processing and saved or saved as a reference (target image). was created and saved at an earlier point in time.
  • step 9 To ensure that the saved image is suitable as a reference for a fingerprint, another image of the selected area is created as described above and saved as a secondary reference image. 10. The reference image from step 8 and the secondary reference image from step 9 are used for future comparisons of the selected area.
  • the user wants to determine whether a work of art / object available to him corresponds to the object originally recorded in the registration process or is identical to it.
  • step 8 of the registration process is now used to obtain the best possible image in accordance with steps 6 and / or 7 of the registration

Abstract

L'invention concerne un procédé de reconnaissance de surfaces (2), en particulier pour la reconnaissance ou l'identification optique de surfaces (2) structurées et/ou picturales, ledit procédé comprenant les étapes suivantes : la focalisation d'une caméra (5) sur un point d'image (3) proéminent sur la surface (2), la création d'au moins un flux vidéo en direct d'une zone reconnaissable et à fort contraste du point d'image (3), et le guidage de la caméra (5) vers la trame d'image de la vidéo ayant la plus grande profondeur de détail en focalisant une caméra (5) sur un point d'image proéminent (3) sur la surface (2) à détecter, la création d'au moins deux images d'une zone reconnaissable à contraste élevé du point d'image (3), le stockage de l'image ayant la plus grande profondeur de détail comme image de référence, l'analyse de chaque trame d'image du flux vidéo en direct, la comparaison de la trame d'image ayant la plus grande profondeur de détail avec une image cible ou une image de référence.
EP21710597.2A 2020-03-23 2021-03-03 Procédé de reconnaissance de surfaces Pending EP4127670A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00344/20A CH717252A2 (de) 2020-03-23 2020-03-23 Verfahren zur Wiedererkennung von Oberflächen.
PCT/IB2021/051754 WO2021191708A1 (fr) 2020-03-23 2021-03-03 Procédé de reconnaissance de surfaces

Publications (1)

Publication Number Publication Date
EP4127670A1 true EP4127670A1 (fr) 2023-02-08

Family

ID=77887811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21710597.2A Pending EP4127670A1 (fr) 2020-03-23 2021-03-03 Procédé de reconnaissance de surfaces

Country Status (4)

Country Link
US (1) US20230206637A1 (fr)
EP (1) EP4127670A1 (fr)
CH (1) CH717252A2 (fr)
WO (1) WO2021191708A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737631C1 (de) 1987-11-05 1989-03-02 Sick Optik Elektronik Erwin Optische Abstastvorrichtung fuer ebene Oberflaechen
US5521984A (en) * 1993-06-10 1996-05-28 Verification Technologies, Inc. System for registration, identification and verification of items utilizing unique intrinsic features
ATE441183T1 (de) 1999-01-22 2009-09-15 Konica Minolta Opto Inc Optische abtastvorrichtung, mit der optischen abtastvorrichtung versehenes aufnahme/wiedergabegerät, optisches element und verfahren zur datenaufnahme/wiedergabe
DE102008018586A1 (de) 2008-04-12 2009-11-05 Mühlbauer Ag Optische Erfassungsvorrichtung und Verfahren für die Erfassung von Oberflächen von Bauteilen
DE102014018940A1 (de) 2014-12-22 2016-06-23 Sata Gmbh & Co. Kg Vorrichtung und Verfahren zur Begutachtung von Oberflächen, insbesondere von Farb- oder Lackoberflächen
WO2017089736A1 (fr) 2015-11-27 2017-06-01 Kerquest Procede d'authentification et/ou de controle d'integrite d'un sujet
BR112018073706A8 (pt) 2016-05-17 2023-04-04 Kerquest Método de autenticação aumentada de um assunto material
DE102016011497B4 (de) 2016-09-21 2019-01-24 Mühlbauer Gmbh & Co. Kg Optische Untersuchungseinrichtung und optisches Untersuchungsverfahren mit sichtbarem und infrarotem Licht für Halbleiterbauteile
DE102017000296B4 (de) 2017-01-15 2021-02-11 Baden-Württemberg Stiftung Ggmbh Messsystem und Verfahren zur kombinierten Erfassung der Oberflächentopographie und hyperspektralen Bildgebung
EP3577597A1 (fr) * 2017-05-19 2019-12-11 Google LLC Analyse d'image efficace à l'aide de données de capteur d'environnement
CN108898597B (zh) * 2018-06-28 2021-10-15 广东创图文化传媒有限公司 一种基于智能手机的书画鉴证的方法

Also Published As

Publication number Publication date
US20230206637A1 (en) 2023-06-29
WO2021191708A1 (fr) 2021-09-30
CH717252A2 (de) 2021-09-30

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