FR3134270B3 - Process for rectifying the brightness of a digital image - Google Patents

Process for rectifying the brightness of a digital image Download PDF

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Publication number
FR3134270B3
FR3134270B3 FR2203120A FR2203120A FR3134270B3 FR 3134270 B3 FR3134270 B3 FR 3134270B3 FR 2203120 A FR2203120 A FR 2203120A FR 2203120 A FR2203120 A FR 2203120A FR 3134270 B3 FR3134270 B3 FR 3134270B3
Authority
FR
France
Prior art keywords
digital image
rectifying
brightness
detection device
light intensity
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.)
Active
Application number
FR2203120A
Other languages
French (fr)
Other versions
FR3134270A3 (en
Inventor
Guillaume Bathelet
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.)
Caliper Fr
Original Assignee
Konatic
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 Konatic filed Critical Konatic
Priority to FR2203120A priority Critical patent/FR3134270B3/en
Priority to PCT/EP2023/059034 priority patent/WO2023194487A1/en
Publication of FR3134270A3 publication Critical patent/FR3134270A3/en
Application granted granted Critical
Publication of FR3134270B3 publication Critical patent/FR3134270B3/en
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Anticipated expiration legal-status Critical

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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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/86—Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image 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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/025—Fruits or vegetables

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

L’invention concerne un procédé de rectification de la luminosité d’une image numérique. Le procédé de rectification met en oeuvre les étapes suivantes : a) acquisition d’une image numérique d’un objet (14) par l’intermédiaire d’un dispositif de détection optique comprenant des capteurs photosensibles (10), l’image numérique est formée à partir de mesures de variations d’intensité lumineuses à une longueur d’onde d’observation dont la réflectance varie en fonction de la composition chimique de la surface dudit objet (14) ; b) mesure de la distance entre la surface de l’objet (14) et les capteurs photosensibles (10), les mesures de distance sont réalisées à une longueur d’onde télémétrique dont la réflectance ne dépend pas de la composition chimique de la surface de l’objet (14) ; c) pondération de l’intensité lumineuse de l’image acquise par le dispositif de détection optique lors de l’étape a), en fonction des distances mesurées lors de l’étape b). Figure 1The invention relates to a method for rectifying the brightness of a digital image. The rectification method implements the following steps: a) acquisition of a digital image of an object (14) via an optical detection device comprising photosensitive sensors (10), the digital image is formed from measurements of light intensity variations at an observation wavelength whose reflectance varies as a function of the chemical composition of the surface of said object (14); b) measuring the distance between the surface of the object (14) and the photosensitive sensors (10), the distance measurements are carried out at a telemetric wavelength whose reflectance does not depend on the chemical composition of the surface of the object (14); c) weighting of the light intensity of the image acquired by the optical detection device during step a), as a function of the distances measured during step b). Figure 1

FR2203120A 2022-04-05 2022-04-05 Process for rectifying the brightness of a digital image Active FR3134270B3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2203120A FR3134270B3 (en) 2022-04-05 2022-04-05 Process for rectifying the brightness of a digital image
PCT/EP2023/059034 WO2023194487A1 (en) 2022-04-05 2023-04-05 Process for rectifying the brightness of a digital image

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2203120A FR3134270B3 (en) 2022-04-05 2022-04-05 Process for rectifying the brightness of a digital image
FR2203120 2022-04-05

Publications (2)

Publication Number Publication Date
FR3134270A3 FR3134270A3 (en) 2023-10-06
FR3134270B3 true FR3134270B3 (en) 2024-04-19

Family

ID=82019822

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2203120A Active FR3134270B3 (en) 2022-04-05 2022-04-05 Process for rectifying the brightness of a digital image

Country Status (2)

Country Link
FR (1) FR3134270B3 (en)
WO (1) WO2023194487A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9108782B2 (en) * 2012-10-15 2015-08-18 S.C. Johnson & Son, Inc. Dispensing systems with improved sensing capabilities
CN108254396B (en) * 2017-12-05 2019-12-03 江苏大学 It is a kind of based on micro-CT and polarization-high light spectrum image-forming multiple features fusion tomato seedling water stress detection method
GB201721451D0 (en) * 2017-12-20 2018-01-31 Univ Manchester Apparatus and method for determining spectral information

Also Published As

Publication number Publication date
WO2023194487A1 (en) 2023-10-12
FR3134270A3 (en) 2023-10-06

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Legal Events

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Year of fee payment: 2

TP Transmission of property

Owner name: CALIPER, FR

Effective date: 20231212

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Year of fee payment: 3