FR3047830B1 - METHOD FOR DETERMINING THE DIRECTION OF MOVING OBJECTS IN A SCENE - Google Patents

METHOD FOR DETERMINING THE DIRECTION OF MOVING OBJECTS IN A SCENE Download PDF

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Publication number
FR3047830B1
FR3047830B1 FR1651120A FR1651120A FR3047830B1 FR 3047830 B1 FR3047830 B1 FR 3047830B1 FR 1651120 A FR1651120 A FR 1651120A FR 1651120 A FR1651120 A FR 1651120A FR 3047830 B1 FR3047830 B1 FR 3047830B1
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ddk
image
inn
moving objects
computation
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French (fr)
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FR3047830A1 (en
Inventor
Joseph Castaings William
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Nat Du Rhone Cie
Tenevia
NATIONALE DU RHONE Cie
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Nat Du Rhone Cie
Tenevia
NATIONALE DU RHONE Cie
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Priority to FR1651120A priority Critical patent/FR3047830B1/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/246—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
    • 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
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20068—Projection on vertical or horizontal image axis
    • 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
    • G06T2207/30181—Earth observation
    • G06T2207/30192—Weather; Meteorology

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Analysis (AREA)

Abstract

Un procédé d'estimation de la direction moyenne de déplacements d'objets en mouvement dans un flux d'images {INn} d'une scène comprenant du ciel, le procédé comprend : - pour chaque image INn du flux : ○ le calcul d'une image segmentée INsn identifiant les objets en mouvement dans l'image INn; ○ le calcul d'un ensemble de zones d'image {Zk.n} respectivement associées à des directions d'analyse {Dk} différentes : o dans chaque zone Zk.n, le calcul d'une distribution DDk,n des valeurs des pixels le long d'une direction normale à la direction d'analyse Dk; - pour chaque direction Dk, le calcul d'un critère de variabilité CVk,n de distributions {DDk,n-p, DDk,n-p+1,... ,DDk,n-1, DDk,n} calculées pour des zones Zk,n associées à ladite direction Dk; et - la détermination de la direction moyenne Dkopt,n de déplacement des objets dans le flux {INn} comme étant égale à la direction pour laquelle le critère de variabilité CVk,n est optimum.A method for estimating the average direction of movements of moving objects in an image stream {INn} of a scene comprising sky, the method comprises: for each image INn of the stream: ○ the calculation of a segmented image INsn identifying moving objects in the INn image; ○ the computation of a set of image zones {Zk.n} respectively associated with different directions of analysis {Dk}: o in each zone Zk.n, the computation of a distribution DDk, n of the values of pixels along a direction normal to the analysis direction Dk; for each direction Dk, the computation of a criterion of variability CVk, n of distributions {DDk, np, DDk, n-p + 1, ..., DDk, n-1, DDk, n} calculated for zones Zk, n associated with said direction Dk; and determining the mean direction Dkopt, n of displacement of the objects in the flux {INn} as being equal to the direction for which the criterion of variability CVk, n is optimum.

FR1651120A 2016-02-12 2016-02-12 METHOD FOR DETERMINING THE DIRECTION OF MOVING OBJECTS IN A SCENE Active FR3047830B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1651120A FR3047830B1 (en) 2016-02-12 2016-02-12 METHOD FOR DETERMINING THE DIRECTION OF MOVING OBJECTS IN A SCENE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1651120A FR3047830B1 (en) 2016-02-12 2016-02-12 METHOD FOR DETERMINING THE DIRECTION OF MOVING OBJECTS IN A SCENE
FR1651120 2016-02-12

Publications (2)

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FR3047830A1 FR3047830A1 (en) 2017-08-18
FR3047830B1 true FR3047830B1 (en) 2019-05-10

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FR1651120A Active FR3047830B1 (en) 2016-02-12 2016-02-12 METHOD FOR DETERMINING THE DIRECTION OF MOVING OBJECTS IN A SCENE

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020179326A1 (en) * 2019-03-06 2020-09-10 古野電気株式会社 Cloud observation device, cloud observation method, and program

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1884893A1 (en) * 2006-08-03 2008-02-06 Mitsubishi Electric Information Technology Centre Europe B.V. Sparse integral image description with application to motion analysis
WO2015157643A1 (en) * 2014-04-10 2015-10-15 Vega-Avila Rolando Solar energy forecasting

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Publication number Publication date
FR3047830A1 (en) 2017-08-18

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