WO2015005758A4 - Single-camera system for estimating the speed of vehicles by video processing with multi-camera calibration by stereoscopic effect - Google Patents

Single-camera system for estimating the speed of vehicles by video processing with multi-camera calibration by stereoscopic effect Download PDF

Info

Publication number
WO2015005758A4
WO2015005758A4 PCT/MA2014/000016 MA2014000016W WO2015005758A4 WO 2015005758 A4 WO2015005758 A4 WO 2015005758A4 MA 2014000016 W MA2014000016 W MA 2014000016W WO 2015005758 A4 WO2015005758 A4 WO 2015005758A4
Authority
WO
WIPO (PCT)
Prior art keywords
camera
cameras
processing unit
scene
stereoscopic effect
Prior art date
Application number
PCT/MA2014/000016
Other languages
French (fr)
Other versions
WO2015005758A1 (en
Inventor
Francois Bourzeix
Omar BOURJA
Original Assignee
Moroccan Foundation For Advanced Science, Innovation & Research (Mascir)
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 Moroccan Foundation For Advanced Science, Innovation & Research (Mascir) filed Critical Moroccan Foundation For Advanced Science, Innovation & Research (Mascir)
Publication of WO2015005758A1 publication Critical patent/WO2015005758A1/en
Publication of WO2015005758A4 publication Critical patent/WO2015005758A4/en

Links

Classifications

    • 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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/38—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using photographic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/254—Analysis of motion involving subtraction of images
    • 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
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G06T2207/10021—Stereoscopic video; Stereoscopic 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
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30236—Traffic on road, railway or crossing
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles

Abstract

The present invention concerns systems (speed detection devices) for passive speed estimation using video processing, which are used, in particular, for detecting traffic violations (speeding).

Claims

REVENDICATIONS MODIFIÉES reçues par le Bureau international le 02 February 2015 (02.02.2015) AMENDED CLAIMS received by the International Bureau on 02 February 2015 (02.02.2015)
1. Système d'estimation des vitesses d'objets par traitement vidéo comprenant une caméra principale (105) et une caméra secondaire (110) qui sont fixées à une hauteur "h" (400) au-dessus de la surface de la route, leurs axes optiques sont parallèles avec une distance (B) les séparant et elles sont inclinés à un angle # (405) par rapport à la surface de la route caractérisé en ce que les deux caméras (105) et (110) sont connectées à une unité de traitement (190) permettant l'indentification des points de références (125) sur les images prises par les deux caméras (105, 110) au même instant t, pour générer les distances réelles métriques desdits points de références (125) par rapport au sol et ainsi construire une matrice de calibration composée des coordonnées des points identifiés et de leurs distances métriques d (400). Ladite matrice est utilisée par l'unité de traitement (190) pour calibrer la caméra (105) afin d'estimer la vitesse de mouvement des objets. A video processing object velocity estimation system comprising a main camera (105) and a secondary camera (110) which are fixed at a height "h" (400) above the road surface, their optical axes are parallel with a distance (B) separating them and they are inclined at an angle # (405) with respect to the surface of the road, characterized in that the two cameras (105) and (110) are connected to a processing unit (190) for identifying the reference points (125) on the images taken by the two cameras (105, 110) at the same time t, to generate the actual metric distances of said reference points (125) relative to on the ground and thus build a calibration matrix composed of the coordinates of the identified points and their metric distances d (400). The matrix is used by the processing unit (190) to calibrate the camera (105) to estimate the speed of movement of the objects.
2. Système selon la revendication 1 caractérisé en ce que les caméras (105) et (110) sont numériques et identiques avec des axes optiques parallèles. 2. System according to claim 1 characterized in that the cameras (105) and (110) are digital and identical with parallel optical axes.
3. Système multi-caméras selon les revendications 1 et 2 caractérisé en ce que l'unité de traitement des images (200) contient une carte d'acquisition (210) qui permet de récupérer le flux vidéo en provenance des caméras (105) et (110), identifier les éléments mobiles, et calibrer la scène filmée. 3. Multi-camera system according to claims 1 and 2 characterized in that the image processing unit (200) contains an acquisition card (210) for recovering the video stream from the cameras (105) and (110), identify the moving elements, and calibrate the filmed scene.
4. Système multi-caméras selon les revendications 1 à 3 caractérisé en ce qu'au niveau de l'unité de traitement, un algorithme permet d'identifier 4 points (de fortes contraste par exemple) sur les deux images acquises par les deux caméras (105) et (110) afin de calibrer le système et de réaliser le redressement de la scène en utilisant l'effet stéréoscopique. 4. Multi-camera system according to claims 1 to 3 characterized in that at the processing unit, an algorithm can identify 4 points (high contrast for example) on the two images acquired by the two cameras (105) and (110) to calibrate the system and perform scene recovery using the stereoscopic effect.
5. Système multi-caméras selon les revendications 1 à 4 caractérisé en ce que la caméra (105) est une caméra principale qui a pour objectif la détection des objets mobiles sur la scène filmée, et que la caméra (110) est une caméra de calibration qui permet de redressé la scène par l'effet stéréoscopique. 5. Multi-camera system according to claims 1 to 4 characterized in that the camera (105) is a main camera that aims to detect moving objects on the scene filmed, and that the camera (110) is a camera of calibration that rectifies the scene by the stereoscopic effect.
8 8
PCT/MA2014/000016 2013-07-08 2014-07-08 Single-camera system for estimating the speed of vehicles by video processing with multi-camera calibration by stereoscopic effect WO2015005758A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MA36097A MA36097B1 (en) 2013-07-08 2013-07-08 Mono-camera system for estimating vehicle speed by video processing with multi-camera calibration by stereoscopic effect
MA36097 2013-07-08

Publications (2)

Publication Number Publication Date
WO2015005758A1 WO2015005758A1 (en) 2015-01-15
WO2015005758A4 true WO2015005758A4 (en) 2015-03-19

Family

ID=51429344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MA2014/000016 WO2015005758A1 (en) 2013-07-08 2014-07-08 Single-camera system for estimating the speed of vehicles by video processing with multi-camera calibration by stereoscopic effect

Country Status (2)

Country Link
MA (1) MA36097B1 (en)
WO (1) WO2015005758A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69330513D1 (en) * 1992-03-20 2001-09-06 Commw Scient Ind Res Org OBJECT MONITORING SYSTEM
KR100201739B1 (en) * 1995-05-18 1999-06-15 타테이시 요시오 Method for observing an object, apparatus for observing an object using said method, apparatus for measuring traffic flow and apparatus for observing a parking lot
ITTO20060214A1 (en) * 2006-03-22 2007-09-23 Kria S R L VEHICLE DETECTION SYSTEM

Also Published As

Publication number Publication date
MA36097B1 (en) 2016-01-29
WO2015005758A1 (en) 2015-01-15
MA20150045A1 (en) 2015-02-27

Similar Documents

Publication Publication Date Title
KR102384175B1 (en) Camera device for vehicle
EP2632160B1 (en) Method and apparatus for image processing
CA3027899C (en) Ground plane detection for placement of augmented reality objects
EP3101625A3 (en) Method and system of selecting a view from a plurality of cameras
MX2018010527A (en) Information processing system, information processing device, information processing method, and program.
WO2016077057A3 (en) Imaging systems and methods
EP3372975A3 (en) Leak detection for fluid distribution networks using hyperspectral imaging
JP2013546238A5 (en)
EP3013047B1 (en) Multiple pixel pitch for super resolution
WO2014132090A3 (en) Optical navigation & positioning system
EP2348280A3 (en) Systems and methods for monocular airborne object detection
MX2017006717A (en) Method of controlling a traffic surveillance system.
CN108692719A (en) Article detection device
FR3047451B1 (en) METHOD, DEVICE AND SYSTEM FOR DETECTING THE DEFECT (S) OF A PANTOGRAPH OF A VEHICLE MOVING ON A RAILWAY
US9373175B2 (en) Apparatus for estimating of vehicle movement using stereo matching
WO2020117285A1 (en) A multicamera system for autonamous driving vehicles
MY196035A (en) Line Measurement Device and Method
WO2017056088A3 (en) Method and system for recalibrating sensing devices without familiar targets
JP2017092839A5 (en)
WO2015005758A4 (en) Single-camera system for estimating the speed of vehicles by video processing with multi-camera calibration by stereoscopic effect
JP2019068117A5 (en) Image processing device and image processing method, imaging device
WO2018069354A3 (en) Stereometric object flow interaction
WO2018052364A3 (en) Automatic panning system
JP5315104B2 (en) Traffic flow measuring device
JP2016090242A (en) Method for measuring exit pupil position of lens

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14757988

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14757988

Country of ref document: EP

Kind code of ref document: A1