WO2021045698A1 - A speed detection system - Google Patents

A speed detection system Download PDF

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Publication number
WO2021045698A1
WO2021045698A1 PCT/TR2019/050722 TR2019050722W WO2021045698A1 WO 2021045698 A1 WO2021045698 A1 WO 2021045698A1 TR 2019050722 W TR2019050722 W TR 2019050722W WO 2021045698 A1 WO2021045698 A1 WO 2021045698A1
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WO
WIPO (PCT)
Prior art keywords
imaging unit
processor
speed
image
images
Prior art date
Application number
PCT/TR2019/050722
Other languages
French (fr)
Inventor
Farid JABARZADE
Cenk MULAZIMOGLU
Yasin ERDEM
Elzad IZZATDUST
Original Assignee
Ggtek Gelismis Guvenlik Teknolojileri A.S.
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
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Application filed by Ggtek Gelismis Guvenlik Teknolojileri A.S. filed Critical Ggtek Gelismis Guvenlik Teknolojileri A.S.
Priority to PCT/TR2019/050722 priority Critical patent/WO2021045698A1/en
Publication of WO2021045698A1 publication Critical patent/WO2021045698A1/en

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/60—Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
    • 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
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules

Definitions

  • the present invention relates to a system which detects speed of an object on the basis of number of change of images in hologram films created by lenticular lenses and time of these changes.
  • the United States patent document no. US5938717 an application in the state of the art, an automatic speed detection system which can capture image of a moving vehicle.
  • the system comprises an image detector which generates an image signal to represent the image of the moving vehicle, a storage device which can store the image signals representing the parameters being associated with the image, and a database processor which can search the image signal and the associated parameters.
  • the triggering devices capture a video frame during a flash illumination for storage with the associated data parameters. Together with the captured image; items such as the distance of the moving vehicle from the imaging/detector unit, the time, date and location of the captured image are also obtained.
  • Imaging transaction for a moving vehicle is carried out by using a telephoto lens such as a 200 millimeter Olympus 200. Thereby, speed data of a moving vehicle can be accessed.
  • An objective of the present invention is to realize a system which enables to make speed detection by imaging the related pictures that are coded on hologram films created by lenticular lenses, at different angles.
  • Another objective of the present invention is to realize a system which determines speed of an object from number of change of frames that are captured belonging to the image obtained by lenticular lenses relating to the object the speed of which is aimed to be determined, and time of these changes.
  • Figure 1 is a schematic view of the inventive system.
  • Figure 2 is a view showing the points where the imaging unit and the lenticular lens are placed in the inventive system.
  • Figure 3 is a view showing change and direction of movement of different images that are detected by means of the inventive lenticular lens.
  • the inventive system (1) for detecting speed of object/objects comprises: at least one lenticular lens (2) which is placed on the object (C) the speed of which is aimed to be detected and creates films that will enable to observe multiple images independent of each other on the surface where it is placed when viewed from different angles; at least one imaging unit (3) which enables to capture different images at different angles, from films that are created by the lenticular lens (2) while the object the speed of which will be detected is on the move; and at least one processor (4) which makes calculations necessary for speed detection by using capture times of the lenticular images that are obtained by the imaging unit (3) and the distance covered until the capture time.
  • the lenticular lens (2) included in the inventive system (1) can be placed in any area of the object (C) (preferably a vehicle) the speed of which will be measured.
  • the lenticular lens (2) are lens arrays consisting of optical structures that are placed successively at certain periodicity and in different shapes.
  • Lenticular holograms which are film comprising multiple different images with the lenticular lens (2), are created.
  • the lenticular lens (2) show the images that are coded in different areas of the film, when viewed from different angles and present the images at high resolution as enlarged.
  • the hologram created by the lenticular lenses (2) always shows the same image in the same approach angle, whenever it comes into view of the imaging unit (3).
  • the lenticular lens (2) does not need any predefined reference point or region during the image processing.
  • the imaging unit (3) included in the inventive system (1) is configured to monitor the object (C) the speed of which is aimed to be detected and to count the number of change of pictures varying by the angle in the hologram that is created by the lenticular lens (2) placed onto the object (C).
  • the imaging unit (3) is a camera.
  • the imaging unit (3) is placed in a point that will enable to monitor the vehicles from above, when it is requested to detect the speed of a vehicle whereon the lenticular lens (2) is located.
  • the imaging unit (3) continuously observes the environment where it is placed.
  • the processor (4) included in the inventive system (1) is configured to process the image of the object (C) being monitored by the imaging unit (3) and to split the processed image into its frames.
  • the processor (4) is software.
  • the processor (4) calculates the number of frames between both images by determining the first lenticular image of the moving object, that is monitored by the imaging unit (3), captured at a suitable angle and also determining the second lenticular image of it after the image changes.
  • the processor (4) determines the time between two pictures by comparing the number of calculated frames and the recording speed of the imaging unit (3).
  • the processor (4) counts the change in all images up to the last image and calculates the total time by subtracting the times elapsing for each of them from the number of frames.
  • the total time is calculated by equation (1) of:
  • the object speed (V) is calculated by equation (2) of: by accessing the total distance (Dc) upon determining the points where the images are taken by the processor (4), using the distance information known between these points since the imaging unit (3) is in fixed position.
  • the inventive ist (1) enables to determine speed from number of frames by using the number of change and the speed of the image in the lenticular lenses.
  • the imaging unit (3) which is a camera according to the working principle of the inventive ist (1), takes the first image at the moment when the lenticular hologram enters the frame.
  • the images occurring at different angles by means of the lenticular lens (2) used, are saved as default.
  • the processor (4) saves the frame as soon as it decides tha the first image enters the screen. Then, the processor (4) saves the frame that is sees in the lenticular in the second place. By counting the number of frames between two consecutive images, it is calculated after how many frames the second image comes. It calculates the time elapsing between two images by comparing this number of frames with the image recording speed. It carries out this transaction for the changes in the lenticular pictures until it sees the last image. Finally, it finds out the total time, combines it with the known road information and calculates the speed of the object from the equations of motion.

Abstract

The present invention relates to a system (1) which detects speed of an object on the basis of number of change of images in hologram films created by lenticular lenses and time of these changes.

Description

A SPEED DETECTION SYSTEM Technical Field
The present invention relates to a system which detects speed of an object on the basis of number of change of images in hologram films created by lenticular lenses and time of these changes.
Background of the Invention
Today, use of microwave is the most widely-known speed measurement systems. Albeit at low frequencies, these systems lead to electromagnetic pollution. Also, when two objects are en route at very close range to each other, the microwaves carrying out the measurement cannot always discriminate between multiple objects. In addition, cosine error occur based on inclined roads and land structure in existing systems. Therefore, there is need for a system which enables to make speed detection regardless of the position of the object without leading to electromagnetic pollution.
The United States patent document no. US5938717, an application in the state of the art, an automatic speed detection system which can capture image of a moving vehicle. The system comprises an image detector which generates an image signal to represent the image of the moving vehicle, a storage device which can store the image signals representing the parameters being associated with the image, and a database processor which can search the image signal and the associated parameters. The triggering devices capture a video frame during a flash illumination for storage with the associated data parameters. Together with the captured image; items such as the distance of the moving vehicle from the imaging/detector unit, the time, date and location of the captured image are also obtained. Imaging transaction for a moving vehicle is carried out by using a telephoto lens such as a 200 millimeter Olympus 200. Thereby, speed data of a moving vehicle can be accessed.
Summary of the Invention
An objective of the present invention is to realize a system which enables to make speed detection by imaging the related pictures that are coded on hologram films created by lenticular lenses, at different angles.
Another objective of the present invention is to realize a system which determines speed of an object from number of change of frames that are captured belonging to the image obtained by lenticular lenses relating to the object the speed of which is aimed to be determined, and time of these changes.
Detailed Description of the Invention
“A Speed Detection System” realized to fulfil the objectives of the present invention is shown in the figures attached, in which:
Figure 1 is a schematic view of the inventive system.
Figure 2 is a view showing the points where the imaging unit and the lenticular lens are placed in the inventive system.
Figure 3 is a view showing change and direction of movement of different images that are detected by means of the inventive lenticular lens.
The components illustrated in the figures are individually numbered, where the numbers refer to the following:
1. System
2. Lenticular lens 3. Imaging unit
4. Processor
The inventive system (1) for detecting speed of object/objects comprises: at least one lenticular lens (2) which is placed on the object (C) the speed of which is aimed to be detected and creates films that will enable to observe multiple images independent of each other on the surface where it is placed when viewed from different angles; at least one imaging unit (3) which enables to capture different images at different angles, from films that are created by the lenticular lens (2) while the object the speed of which will be detected is on the move; and at least one processor (4) which makes calculations necessary for speed detection by using capture times of the lenticular images that are obtained by the imaging unit (3) and the distance covered until the capture time.
The lenticular lens (2) included in the inventive system (1) can be placed in any area of the object (C) (preferably a vehicle) the speed of which will be measured. The lenticular lens (2) are lens arrays consisting of optical structures that are placed successively at certain periodicity and in different shapes. Lenticular holograms, which are film comprising multiple different images with the lenticular lens (2), are created. The lenticular lens (2) show the images that are coded in different areas of the film, when viewed from different angles and present the images at high resolution as enlarged. The hologram created by the lenticular lenses (2) always shows the same image in the same approach angle, whenever it comes into view of the imaging unit (3). The lenticular lens (2) does not need any predefined reference point or region during the image processing.
The imaging unit (3) included in the inventive system (1) is configured to monitor the object (C) the speed of which is aimed to be detected and to count the number of change of pictures varying by the angle in the hologram that is created by the lenticular lens (2) placed onto the object (C). In a preferred embodiment, the imaging unit (3) is a camera. The imaging unit (3) is placed in a point that will enable to monitor the vehicles from above, when it is requested to detect the speed of a vehicle whereon the lenticular lens (2) is located. The imaging unit (3) continuously observes the environment where it is placed.
The processor (4) included in the inventive system (1) is configured to process the image of the object (C) being monitored by the imaging unit (3) and to split the processed image into its frames. In a preferred embodiment, the processor (4) is software. The processor (4) calculates the number of frames between both images by determining the first lenticular image of the moving object, that is monitored by the imaging unit (3), captured at a suitable angle and also determining the second lenticular image of it after the image changes. The processor (4) determines the time between two pictures by comparing the number of calculated frames and the recording speed of the imaging unit (3). The processor (4) calculates the time elapsing between two pictures (Dΐ) from the number of frames (n) and the imaging unit (3) frequency in the form of (f (Hz)) Dΐ = n / f. The processor (4) counts the change in all images up to the last image and calculates the total time by subtracting the times elapsing for each of them from the number of frames. The total time is calculated by equation (1) of:
Figure imgf000005_0001
. Then, the object speed (V) is calculated by equation (2) of:
Figure imgf000005_0002
by accessing the total distance (Dc) upon determining the points where the images are taken by the processor (4), using the distance information known between these points since the imaging unit (3) is in fixed position. The inventive sistem (1) enables to determine speed from number of frames by using the number of change and the speed of the image in the lenticular lenses.
The imaging unit (3) which is a camera according to the working principle of the inventive sistem (1), takes the first image at the moment when the lenticular hologram enters the frame. The images occurring at different angles by means of the lenticular lens (2) used, are saved as default. The processor (4) saves the frame as soon as it decides tha the first image enters the screen. Then, the processor (4) saves the frame that is sees in the lenticular in the second place. By counting the number of frames between two consecutive images, it is calculated after how many frames the second image comes. It calculates the time elapsing between two images by comparing this number of frames with the image recording speed. It carries out this transaction for the changes in the lenticular pictures until it sees the last image. Finally, it finds out the total time, combines it with the known road information and calculates the speed of the object from the equations of motion.
Within these basic concepts; it is possible to develop various embodiments of the inventive “Speed Detection System (1)”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.

Claims

1. A system (1) for detecting speed of object/objects; characterized by at least one lenticular lens (2) which is placed on the object (C) the speed of which is aimed to be detected and creates films that will enable to observe multiple images independent of each other on the surface where it is placed when viewed from different angles; at least one imaging unit (3) which enables to capture different images at different angles, from films that are created by the lenticular lens (2) while the object the speed of which will be detected is on the move; and at least one processor (4) which makes calculations necessary for speed detection by using capture times of the lenticular images that are obtained by the imaging unit (3) and the distance covered until the capture time.
2. A system (1) according to any of the preceding claims; characterized by the imaging unit (3) which is configured to monitor the object (C) the speed of which is aimed to be detected and to count the number of change of pictures varying by the angle in the hologram that is created by the lenticular lens (2) placed onto the object (C).
3. A system (1) according to any of the preceding claims; characterized by the imaging unit (3) an instance of which is a camera.
4. A system (1) according to any of the preceding claims; characterized by the imaging unit (3) which is placed in a point that will enable to monitor the vehicles from above, when it is requested to detect the speed of a vehicle whereon the lenticular lens (2) is located.
5. A system (1) according to any of the preceding claims; characterized by the processor (4) which is configured to process the image of the object (C) being monitored by the imaging unit (3) and to split the processed image into its frames.
6. A system (1) according to any of the preceding claims; characterized by the processor (4) an instance of which is software.
7. A system (1) according to any of the preceding claims; characterized by the processor (4) which calculates the number of frames between both images by determining the first lenticular image of the moving object, that is monitored by the imaging unit (3), captured at a suitable angle and also determining the second lenticular image of it after the image changes.
8. A system (1) according to any of the preceding claims; characterized by the processor (4) which determines the time between two pictures by comparing the number of calculated frames and the recording speed of the imaging unit (3).
9. A system (1) according to any of the preceding claims; characterized by the processor (4) which calculates the time elapsing between two pictures (At) from the number of frames (n) and the imaging unit (3) frequency in the form of (f (Hz)) At = n / f.
10. A system (1) according to any of the preceding claims; characterized by the processor (4) which counts the change in all images up to the last image and calculates the total time by subtracting the times elapsing for each of them from the number of frames.
11. A system (1) according to any of the preceding claims; characterized by the processor (4) which calculates the total time (T) as such in the equation
(1) of
Figure imgf000009_0002
12. A system (1) according to any of the preceding claims; characterized by the processor (4) which calculates the object speed (V) as such in the equation of number 2:
Figure imgf000009_0001
by accessing the total distance (Ax) upon determining the points where the images are taken, using the distance information known between these points since the imaging unit (3) is in fixed position.
PCT/TR2019/050722 2019-09-03 2019-09-03 A speed detection system WO2021045698A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466714A (en) * 2008-12-31 2010-07-07 Lucasfilm Entertainment Compan Hybrid visual and physical object tracking for virtual (VR) system
WO2011128766A2 (en) * 2010-04-13 2011-10-20 Picard Frederic Methods and systems for object tracking

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466714A (en) * 2008-12-31 2010-07-07 Lucasfilm Entertainment Compan Hybrid visual and physical object tracking for virtual (VR) system
WO2011128766A2 (en) * 2010-04-13 2011-10-20 Picard Frederic Methods and systems for object tracking

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHOMTIP PORNPANOMCHAI ET AL: "Vehicle speed detection system", SIGNAL AND IMAGE PROCESSING APPLICATIONS (ICSIPA), 2009 IEEE INTERNATIONAL CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 18 November 2009 (2009-11-18), pages 135 - 139, XP031685337, ISBN: 978-1-4244-5560-7 *
HARIK EL HOUSSEIN CHOUAIB ET AL: "Vision based target tracking using an unmanned aerial vehicle", 2015 IEEE INTERNATIONAL WORKSHOP ON ADVANCED ROBOTICS AND ITS SOCIAL IMPACTS (ARSO), IEEE, 30 June 2015 (2015-06-30), pages 1 - 6, XP032878049, DOI: 10.1109/ARSO.2015.7428194 *
HIDEYUKI TANAKA ET AL: "A Visual Marker for Precise Pose Estimation based on Lenticular Lenses", IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, 14 May 2012 (2012-05-14), pages 1 - 6, XP055413898, Retrieved from the Internet <URL:http://ieeexplore.ieee.org/ielx5/6215071/6224548/06225114.pdf> [retrieved on 20171010] *
RAHIM H A ET AL: "Vehicle speed detection using frame differencing for smart surveillance system", INFORMATION SCIENCES SIGNAL PROCESSING AND THEIR APPLICATIONS (ISSPA), 2010 10TH INTERNATIONAL CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 10 May 2010 (2010-05-10), pages 630 - 633, XP031777789, ISBN: 978-1-4244-7165-2 *

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