EP4127670A1 - Method for recognizing surfaces - Google Patents
Method for recognizing surfacesInfo
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000010191 image analysis Methods 0.000 claims description 2
- 238000010422 painting Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000000701 chemical imaging Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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
- 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
- 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
- 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 or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Toxicology (AREA)
- Entrepreneurship & Innovation (AREA)
- Development Economics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Accounting & Taxation (AREA)
- Biochemistry (AREA)
- Economics (AREA)
- Finance (AREA)
- Marketing (AREA)
- Strategic Management (AREA)
- General Business, Economics & Management (AREA)
- Chemical & Material Sciences (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00344/20A CH717252A2 (en) | 2020-03-23 | 2020-03-23 | Process for the recognition of surfaces. |
PCT/IB2021/051754 WO2021191708A1 (en) | 2020-03-23 | 2021-03-03 | Method for recognizing surfaces |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4127670A1 true EP4127670A1 (en) | 2023-02-08 |
Family
ID=77887811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21710597.2A Pending EP4127670A1 (en) | 2020-03-23 | 2021-03-03 | Method for recognizing surfaces |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230206637A1 (en) |
EP (1) | EP4127670A1 (en) |
CH (1) | CH717252A2 (en) |
WO (1) | WO2021191708A1 (en) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3737631C1 (en) | 1987-11-05 | 1989-03-02 | Sick Optik Elektronik Erwin | Optical scanning device for flat surfaces |
US5521984A (en) * | 1993-06-10 | 1996-05-28 | Verification Technologies, Inc. | System for registration, identification and verification of items utilizing unique intrinsic features |
ATE441183T1 (en) | 1999-01-22 | 2009-09-15 | Konica Minolta Opto Inc | OPTICAL SCANNING DEVICE, RECORDING/RECORDING DEVICE EQUIPPED WITH THE OPTICAL SCANNING DEVICE, OPTICAL ELEMENT AND METHOD FOR DATA RECORDING/REPRODUCTION |
DE102008018586A1 (en) | 2008-04-12 | 2009-11-05 | Mühlbauer Ag | Optical detection device and method for detecting surfaces of components |
DE102014018940A1 (en) | 2014-12-22 | 2016-06-23 | Sata Gmbh & Co. Kg | Apparatus and method for assessing surfaces, in particular of paint or lacquer surfaces |
WO2017089736A1 (en) | 2015-11-27 | 2017-06-01 | Kerquest | Method for authenticating and/or checking the integrity of a subject |
WO2017198950A1 (en) | 2016-05-17 | 2017-11-23 | Kerquest | Method of augmented authentification of a material subject |
DE102016011497B4 (en) | 2016-09-21 | 2019-01-24 | Mühlbauer Gmbh & Co. Kg | Optical inspection device and optical inspection method with visible and infrared light for semiconductor devices |
DE102017000296B4 (en) | 2017-01-15 | 2021-02-11 | Baden-Württemberg Stiftung Ggmbh | Measurement system and method for the combined acquisition of surface topography and hyperspectral imaging |
CN113888761A (en) * | 2017-05-19 | 2022-01-04 | 谷歌有限责任公司 | Efficient image analysis using environmental sensor data |
CN108898597B (en) * | 2018-06-28 | 2021-10-15 | 广东创图文化传媒有限公司 | Method for identifying painting and calligraphy based on smart phone |
-
2020
- 2020-03-23 CH CH00344/20A patent/CH717252A2/en unknown
-
2021
- 2021-03-03 EP EP21710597.2A patent/EP4127670A1/en active Pending
- 2021-03-03 US US17/913,508 patent/US20230206637A1/en active Pending
- 2021-03-03 WO PCT/IB2021/051754 patent/WO2021191708A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2021191708A1 (en) | 2021-09-30 |
CH717252A2 (en) | 2021-09-30 |
US20230206637A1 (en) | 2023-06-29 |
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Legal Events
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