WO2010087347A1 - Appareil de photographie de pantographe par traitement d'image - Google Patents

Appareil de photographie de pantographe par traitement d'image Download PDF

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Publication number
WO2010087347A1
WO2010087347A1 PCT/JP2010/050987 JP2010050987W WO2010087347A1 WO 2010087347 A1 WO2010087347 A1 WO 2010087347A1 JP 2010050987 W JP2010050987 W JP 2010050987W WO 2010087347 A1 WO2010087347 A1 WO 2010087347A1
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WIPO (PCT)
Prior art keywords
pantograph
image
unit
vehicle
input image
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PCT/JP2010/050987
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English (en)
Japanese (ja)
Inventor
伸行 藤原
貴雅 藤澤
研 山澤
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株式会社 明電舎
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Application filed by 株式会社 明電舎 filed Critical 株式会社 明電舎
Priority to RU2011135829/11A priority Critical patent/RU2491182C2/ru
Priority to CN2010800055432A priority patent/CN102300741A/zh
Publication of WO2010087347A1 publication Critical patent/WO2010087347A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
    • B60L5/22—Supporting means for the contact bow
    • B60L5/24—Pantographs
    • 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
    • G06V20/54—Surveillance or monitoring of activities, e.g. for recognising suspicious objects of traffic, e.g. cars on the road, trains or boats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Definitions

  • the present invention relates to an apparatus for photographing a roof of a traveling vehicle, and particularly to a pantograph photographing apparatus by image processing for photographing a pantograph of a vehicle by a surveillance camera installed above a track.
  • a camera and lighting are installed above the track, while a recording device is installed indoors, and a device that performs recording in conjunction with a vehicle approach alarm device is generally used. It is used.
  • a device for example, turns on lighting and starts recording based on a train approach signal generated by a vehicle approach warning device when a train approaches, and records an image during a period when the train approach signal is generated.
  • Several proposals have been made for a vehicle approach warning device that generates a train approach signal that serves as a reference for the start and end of imaging.
  • Patent Document 1 discloses a technique in which a vibration sensor is directly attached to a rail using a magnet to detect vibration when a railway vehicle approaches and generate a train approach signal.
  • a train current detection sensor is attached to a rail via a magnet, the output of the sensor is connected to an amplifier built in the arithmetic processing unit, and an alarm is sounded based on the result processed by the arithmetic processing unit.
  • Patent Document 3 includes a transmission unit and a reception unit. The transmission unit transmits an exploration signal to the rail, the reflected signal reflected by the approaching track vehicle is received by the reception unit, and the reflected signal of the reception unit is received.
  • a technique is disclosed that issues an alarm in response to reception.
  • the devices described in Patent Documents 1 to 3 are devices for notifying a construction worker working in the vicinity of a track of the approach of a train. Therefore, these vehicle approach warning devices are configured to detect a train at a position away from the work site by a predetermined distance so that a sufficient time can be secured for the construction worker to retreat. Therefore, in the passing train imaging device, when starting and ending recording based on the train approach signal generated by the vehicle approach warning device, the train will be photographed before the train actually passes through the field of view of the camera, There is a time for taking a picture other than the time when the train passes through the field of view of the surveillance camera.
  • an object of the present invention is to provide a pantograph photographing apparatus using image processing capable of efficiently photographing and recording a roof of a running train and automatically searching for a pantograph from a recorded image.
  • a pantograph photographing apparatus by image processing includes vehicle approach warning means for detecting approach of a vehicle and outputting a vehicle approach signal, and a structure on the roof of the vehicle. Structure detection means for detecting and outputting a trigger signal, imaging means for outputting an input image obtained by imaging the roof of the vehicle based on the trigger signal, image processing means for analyzing the input image, and the vehicle Vehicle passage notification means for detecting the passage of the vehicle and outputting a vehicle passage signal, wherein the image processing means temporarily stores the input image, and the input stored in the shooting function section. And a pantograph image storage function unit that extracts and stores only an image showing a pantograph from the image.
  • a pantograph photographing apparatus using image processing wherein the photographing function unit temporarily stores the input image.
  • a video recording means for transmitting an activation signal to the imaging means, the structure detection detecting means and the video recording means based on a vehicle approach signal output from the vehicle approach warning means, while passing through the vehicle
  • An imaging control unit that transmits a stop signal based on a vehicle passage signal output from the notification unit, a storage unit that stores the input image input from the recording unit, and a storage unit that stores the pantograph image storage function unit
  • a pantograph photographing apparatus based on image processing according to a third invention for solving the above-described problem is a pantograph photographing apparatus based on image processing according to the first invention, wherein the pantograph detecting means sets a reference image set in advance, and The pantograph is detected from the input image by a normalized correlation operation with the input image.
  • a pantograph photographing apparatus based on image processing according to a fourth aspect of the present invention, wherein the pantograph detecting means includes preset feature data, The pantograph is detected from the input image by comparing with feature data extracted from the input image photographed by the photographing means.
  • a pantograph photographing apparatus based on image processing according to a fifth invention for solving the above-mentioned problems is a pantograph photographing apparatus based on image processing according to the first invention, wherein the pantograph detecting means sets a reference sign image set in advance, The pantograph is detected from the input image by comparing with an input code image created from the input image photographed by the photographing means.
  • a pantograph photographing apparatus based on image processing, wherein the image processing means includes the photographing function section and the pantograph image.
  • the image output function unit determines that a pantograph exists for the storage unit by the pantograph detection unit of the images stored in the storage unit.
  • an image output control function for designating the image, and an image output means for outputting an image designated by the image output control function and transmitted from the storage means.
  • pantograph photographing apparatus using image processing according to the first invention only an image showing a pantograph that is an important monitoring target as a rooftop apparatus can be stored. Therefore, an image storage area of the storage device can be stored. Can be used efficiently.
  • the effect of the pantograph photographing apparatus using the image processing according to the first invention can be obtained efficiently.
  • the pantograph photographing apparatus by the image processing according to the third invention can be configured simply.
  • pantograph photographing apparatus based on image processing according to the fourth invention, in addition to the effect of the second invention, brightness fluctuation due to sunshine change or the like, and change in surface state due to dirt on the surface of the pantograph as a detection target. It is robust and can detect a pantograph in an image more stably.
  • pantograph photographing apparatus based on image processing according to the fifth invention, in addition to the effect of the second invention, it is robust against fluctuations in brightness due to changes in sunshine, etc., and the presence / absence of a pantograph in the image can be determined more stably. It can be carried out.
  • pantograph photographing apparatus using image processing according to the sixth invention in addition to the effects of the first to fifth inventions, it is possible to easily browse only the image in which the pantograph is shown.
  • FIG. 1 is an explanatory view showing an installation example of a pantograph photographing apparatus by image processing according to the present embodiment
  • FIG. 2 is a block diagram showing a schematic configuration of the pantograph photographing apparatus by image processing according to the present embodiment
  • FIG. FIG. 4 is an explanatory diagram illustrating an example of a reference image
  • FIG. 5 is an explanatory diagram illustrating an example of an input image
  • FIG. 6 is an explanatory diagram illustrating an example of a pantograph detection result.
  • the pantograph photographing apparatus using image processing includes approaching vehicle detection sensors 10a and 10b for detecting the approach of the vehicle 1, an illumination device 20, a monitoring camera 30 as photographing means, a distance sensor, and the like.
  • a pantograph detection sensor 40 as a structure detection unit and an image processing device 50 as an image processing unit are configured.
  • pantograph photographing apparatus using the image processing of this embodiment, when the pantograph detection sensor 40 detects the passage of the pantograph 1a, the surveillance camera 30 photographs the pantograph 1a and records the image.
  • pantograph detection sensor 40 reacts to a structure on the roof of the vehicle 1 other than the pantograph 1a or some flying object and takes an image without the pantograph 1a. Therefore, an image (see FIG. 5; hereinafter referred to as an input image) 5 recorded by the image processing apparatus 50 is analyzed to determine whether or not the pantograph 1a exists in the input image 5, and the pantograph 1a is reflected. Keep only the images.
  • the approaching vehicle detection sensor 10a detects the approach of the vehicle 1
  • the pantograph detection sensor 40 detects the pantograph 1a
  • the approaching vehicle detection sensor 10b detects the passage of the vehicle 1. Therefore, the approaching vehicle detection sensor 10 a is installed at a position a predetermined distance from the monitoring camera 30 with respect to the traveling direction of the vehicle 1.
  • the lighting device 20, the monitoring camera 30, and the pantograph detection sensor 40 are installed above the track through which the vehicle 1 passes.
  • the approaching vehicle detection sensor 10b is a position ahead of the monitoring camera 30 by a predetermined distance with respect to the traveling direction of the vehicle 1, specifically, when the approaching vehicle detection sensor 10b detects the approach of the vehicle 1. Is installed at such a position as to pass completely under the surveillance camera 30.
  • the approaching vehicle detection sensors 10a and 10b measure, for example, vibrations of the rail 2, and are attached to the rail 2 and as vehicle approach warning units 10A as vehicle approach warning means and vehicle passage notification means shown in FIG. Is connected to the vehicle approach warning unit 10B.
  • the vehicle approach warning unit 10A detects whether or not the vehicle 1 is approaching according to the output of the approaching vehicle detection sensor 10a. When it is determined that the vehicle 1 is approaching, the train approach signal is displayed as an alarm. It transmits to the control part 51 mentioned later of the processing apparatus 50. FIG.
  • the vehicle approach warning unit 10B detects whether or not the vehicle 1 is approaching according to the output of the approaching vehicle detection sensor 10b. When it is determined that the vehicle 1 is approaching, a vehicle passing signal is used as an alarm. Is transmitted to the control unit 51 of the image processing apparatus 50.
  • the illuminating device 20 is installed so as to irradiate the illumination light directly above the track in the vertical direction.
  • the light is turned on in response to a start signal from a control unit 51 (to be described later) of the image processing apparatus 50 and turned off in response to a stop signal from the control unit 51.
  • the surveillance camera 30 as a photographing means is arranged at substantially the same position as the lighting device 20 and is configured to photograph a region immediately below the light illuminated by the lighting device 20 on the roof of the vehicle 1. Then, the imaging function is started upon receipt of an activation signal from the control unit 51 to enter a trigger wait state, and the imaging function is stopped upon receipt of a stop signal from the control unit 51.
  • the trigger waiting state when a trigger signal is received from the pantograph detection sensor 40, shooting is performed, and the captured input image 5 is transmitted to the recording unit 52.
  • the pantograph detection sensor 40 receives a start signal from the control unit 51 and starts a pantograph detection operation, and receives a stop signal from the control unit 51 and stops the pantograph detection operation.
  • a trigger signal is transmitted to the monitoring camera 30.
  • the image processing apparatus 50 includes a photographing function unit 50A for temporarily storing an input image 5 photographed on the roof of the vehicle 1 by the monitoring camera 30, and a temporary photographing unit 50A.
  • the pantograph image storage function unit 50B stores only the image in which the pantograph 1a is shown from the input image 5 stored in FIG.
  • the imaging function unit 50A includes a control unit 51 as an imaging control unit and a recording unit 52 as a recording unit shown in FIG.
  • the control unit 51 receives a train approach signal from the vehicle approach warning unit 10A and transmits an activation signal to the lighting device 20, the pantograph detection sensor 40, the monitoring camera 30, and the recording unit 52. Further, in response to a vehicle passage signal from the vehicle approach warning unit 10B, a stop signal is transmitted to the lighting device 20, the pantograph detection sensor 40, the monitoring camera 30, and the recording unit 52.
  • the recording unit 52 activates the recording function in response to the activation signal from the control unit 51 and starts recording the image received from the monitoring camera 30, and stops the recording function in response to the stop signal from the control unit 51. Further, in response to the inspection signal from the pantograph image storage function unit 50B, the image data of the input image 5 is sequentially transmitted to the storage unit 55 of the pantograph image storage function unit 50B, and these image data are deleted from the recording unit 52 after transmission. To do.
  • the pantograph image storage function unit 50B includes an inspection setting unit 53, an inspection control unit 54 as an inspection control unit, a pantograph detection unit 56 as a pantograph detection unit, and a storage unit 55 as a storage unit. ing.
  • the inspection setting unit 53 sets correlation search parameters and pantograph matching data, which will be described in detail later, and stores them in the storage unit 55.
  • the inspection control unit 54 transmits an inspection signal to the pantograph detection unit 56 and the recording unit 52 of the imaging function unit 50A. Also, a pantograph presence / absence result is received from the pantograph detection unit 56, and when there is no pantograph, a deletion signal is transmitted to the storage unit 55. The inspection control unit 54 repeatedly executes these operations while the input image 5 stored in the recording unit 52 of the imaging function unit 50A exists.
  • the pantograph detection unit 56 receives the inspection signal from the inspection control unit 54, reads the correlation search parameter, the pantograph collation data, and the image data (the input image 5 and the pantograph reference image 3 described later) from the storage unit 55. 5 to detect the pantograph 1a. Then, after the detection process of the pantograph 1a, correlation search result data, which will be described in detail later, is stored in the storage unit 55, and the presence / absence of the pantograph 1a is transmitted to the inspection control unit 54 as the pantograph presence / absence result.
  • pantograph reference image 3 an image as shown in FIG. 4 in which the pantograph 1a is captured in advance is prepared as the pantograph reference image 3, and the position of the pantograph part A in the pantograph reference image 3 and the pantograph It is assumed that pantograph collation data including the range of the part A is created.
  • symbol 4 in FIG. 4 shows a trolley line.
  • the pantograph detection unit 56 is provided with a pantograph detection processing unit 55a and a pantograph determination processing unit 55b.
  • the pantograph detection unit 56 detects the pantograph 1a from the input image 5 taken by the monitoring camera 30 by normalized correlation. That is, first, in the pantograph detection processing unit 55a, the comparison of image data between the search range B and the pantograph portion A in the pantograph reference image 3 is normally performed for the search range B set in the input image 5 in advance. This is performed by the calculation correlation calculation. In the search range B, the position of a region C (the position indicated by hatching in FIG. 6) that best matches the pantograph portion A (hereinafter referred to as the pantograph detection position) and the correlation value (hereinafter referred to as the pantograph detection position). Pantograph detection correlation value).
  • the pantograph detection correlation value is compared with a preset threshold value (hereinafter referred to as a correlation search threshold value), and when the fitness is high, that is, the pantograph detection correlation value is If it is larger than the correlation search threshold, it is determined that the pantograph 1a exists in the search range B, and it is considered that there is a pantograph.
  • a correlation search threshold value a preset threshold value
  • the fitness is low, that is, when the pantograph detection correlation value is equal to or smaller than the correlation search threshold value, it is determined that the pantograph 1a does not exist in the search range B, and is regarded as having no pantograph.
  • the presence / absence of the pantograph 1a thus obtained is output to the inspection control unit 54 as a result of the presence / absence of the pantograph.
  • the search range B and the correlation search threshold are collectively referred to as correlation search parameters.
  • the pantograph detection position and the pantograph detection correlation value are collectively referred to as correlation search result data.
  • the storage unit 55 stores correlation search parameters, pantograph comparison data, image data such as the pantograph reference image 3 and the input image 5 transmitted from the recording unit 52 of the photographing function unit 50A, and correlation search result data.
  • a deletion signal is received from the inspection control unit 54, the image data to be inspected is deleted.
  • pantograph photographing apparatus using image processing only an image showing a pantograph which is an important monitoring target as a rooftop apparatus is stored, so that the image storage area is greatly increased compared to the conventional case. Can be reduced.
  • FIG. 7 is a block diagram illustrating a schematic configuration of a pantograph photographing apparatus using image processing according to the present embodiment
  • FIG. 8 is a block diagram illustrating a configuration of a pantograph detecting unit according to the present embodiment
  • FIG. 9 illustrates an example of an object shape model.
  • FIG. 10 and FIG. 10 are explanatory diagrams showing an example of a pantograph detection result in this embodiment.
  • This embodiment uses the pantograph detector 57 shown in FIG. 7 that detects the pantograph 1a by object shape inspection instead of the pantograph detector 56 that detects the pantograph 1a by the normalized correlation processing of the first embodiment.
  • the processing in the examination setting unit 53 and the storage unit 55 is different from that in the first embodiment.
  • Other configurations are substantially the same as those described in the first embodiment, and hereinafter, the same reference numerals are given to those having the same functions as those shown in FIGS. However, the differences will be mainly described.
  • the pantograph image storage function unit 50B includes an inspection setting unit 53, an inspection control unit 54, a pantograph detection unit 57, and a storage unit 55.
  • the inspection setting unit 53 sets shape inspection parameters and stores them in the storage unit 55.
  • the feature data is read from the storage unit 55, the object shape model is created and stored in the storage unit 55.
  • the inspection control unit 54 performs the same processing as in the first embodiment.
  • the pantograph detection unit 57 detects the pantograph 1a from the input image 5 by object shape inspection using an object recognition method (for example, see Patent Documents 4 and 5 above).
  • object shape inspection first, feature data composed of a linear feature and an arc feature extracted from the input image 5 by approximating a characteristic portion such as a contour line or a pattern to a straight line or an arc is created.
  • An object shape model (see FIG. 9) 6 in which the shape of the object to be formed is constituted by feature data is prepared in advance.
  • feature data is extracted from the input image 5, collated with the feature data of the object shape model 6, and a portion that matches the feature data constituting the object shape model 6 is detected.
  • the pantograph detection unit 57 creates the object shape model 6
  • the pantograph reference image 3 is read out as image data from the storage unit 55, and feature data constituting the object shape model 6 is extracted from the pantograph reference image 3. Data is stored in the storage unit 55.
  • the pantograph detection unit 57 detects the pantograph 1a in the input image 5, it receives an inspection signal from the inspection control unit 51 and receives shape inspection parameters, object shape model 6, image data (input image) from the storage unit 55. 5 and the pantograph reference image 3) are read out, and the pantograph 1a is detected from the input image 5. Then, after the pantograph 1a detection process, the pantograph presence / absence result is transmitted to the inspection control unit 54.
  • the pantograph detection unit 57 is provided with a feature extraction processing unit 57a, a pantograph detection processing unit 57b, and a pantograph determination processing unit 57c.
  • pantograph detection unit 57 in the search range B set in the input image 5 in advance by the feature extraction processing unit 57a, the position of the portion D (see FIG. 10) that best matches the pantograph portion A by object shape inspection (refer to FIG. 10 below). , And a pantograph detection position) and a matching rate of feature data at the pantograph detection position (hereinafter referred to as a pantograph feature matching rate).
  • the pantograph feature matching rate is compared with a preset threshold value (hereinafter referred to as a shape inspection threshold value).
  • a shape inspection threshold value a preset threshold value
  • the matching level is high, that is, the pantograph feature matching rate is higher than the shape inspection threshold value. In this case, it is determined that the pantograph 1a exists in the search range B, and it is considered that there is a pantograph.
  • the matching level is low, that is, when the pantograph feature matching rate is equal to or smaller than the shape inspection threshold, it is determined that the pantograph 1a exists in the search range B, and it is determined that there is no pantograph.
  • the presence / absence of the pantograph 1a thus obtained is output to the inspection control unit 54 as a result of the presence / absence of the pantograph.
  • the search range and shape inspection threshold are collectively referred to as shape inspection parameters.
  • the pantograph detection position and the pantograph feature matching rate are collectively referred to as shape inspection result data.
  • the storage unit 55 stores image data such as the shape inspection parameter, the object shape model 6, feature data, the pantograph reference image 3 and the input image 5 transmitted from the recording unit 52 of the photographing function unit 50A.
  • image data such as the shape inspection parameter, the object shape model 6, feature data, the pantograph reference image 3 and the input image 5 transmitted from the recording unit 52 of the photographing function unit 50A.
  • the pantograph photographing apparatus using the image processing according to the present embodiment in addition to the effects of the first embodiment described above, the variation in brightness due to a change in sunshine and the like, and the change in the surface state due to the dirt on the surface of the pantograph as a detection target. It is robust and can determine the presence or absence of a pantograph in an image more stably.
  • FIG. 11 is a block diagram showing a configuration of a pantograph photographing apparatus by image processing according to the present embodiment
  • FIG. 12 is a block diagram showing a configuration of a pantograph detecting unit of the present embodiment
  • FIG. 13 is an explanatory diagram showing an example of a reference code image. It is.
  • the pantograph detection unit 56 that detects the pantograph 1a by the normalized correlation process of the first embodiment
  • the pantograph detection unit 58 shown in FIG. 11 that detects the pantograph 1a by object shape inspection is used.
  • the processing in the examination setting unit 53 and the storage unit 55 is different from that in the first embodiment.
  • Other configurations are substantially the same as those described in the first embodiment, and hereinafter, the same reference numerals are given to those having the same functions as those shown in FIGS. However, the differences will be mainly described.
  • the pantograph 1a is detected from the input image 5 by the direction code matching process applying “direction code matching (Orientation Code Matching)” (see, for example, Non-Patent Document 1).
  • direction code collation the intensity direction of each image portion is encoded, and the pantograph reference image 3 (see FIG. 4) and the input image 5 are collated with each other, thereby checking the degree of matching between the image data. This is a verification method that is robust against brightness changes and hiding.
  • the pantograph image storage function unit 50B includes an inspection setting unit 53, an inspection control unit 54, a pantograph detection unit 58, and a storage unit 55.
  • the inspection setting unit 53 sets direction code search parameters and pantograph verification data, which will be described in detail later, and stores them in the storage unit 55.
  • the inspection control unit 54 performs the same processing as in the first embodiment.
  • the pantograph detection unit 58 creates a direction sign image (see FIG. 13; hereinafter referred to as a reference sign image) 7 in which the pantograph reference image 3 is encoded with the density of the image portion in advance, and further, the pantograph part A in the pantograph reference image 3 Pantograph collation data consisting of the positions of and the range of the pantograph part A is created in advance.
  • image data (pantograph reference image 3) is read from the storage unit 55, and this is encoded with the density of the image portion to create the reference code image 7 and store it in the storage unit 55.
  • the pantograph 1a is detected from the input image 5. Then, after the pantograph 1a detection process, the pantograph presence / absence result is transmitted to the inspection control unit 54.
  • the pantograph detection unit 58 is provided with a direction encoding processing unit 58a, a pantograph detection processing unit 58b, and a pantograph determination processing unit 58c.
  • pantograph detection processing is performed in the pantograph detection unit 58, first, a direction code image (hereinafter referred to as an input code image) in which the input image 5 (see FIG. 5) is encoded with the density of the image portion in the direction encoding processing unit 58a. ) To compare the image data with the pantograph portion A in the reference code image 7 by the direction code comparison with respect to the search range B set in advance in the pantograph detection processing unit 58b, and search as the pantograph detection position A position that matches the pantograph portion A in the range B and a direction code matching value (hereinafter referred to as a pantograph detection matching value) at the pantograph detection position are obtained.
  • a direction code image hereinafter referred to as an input code image
  • the pantograph detection collation value is compared with a preset threshold value (hereinafter referred to as a direction code search threshold value). Is larger than the direction code search threshold, it is determined that the pantograph 1a exists in the search range B, and it is considered that there is a pantograph. On the other hand, when the fitness is low, that is, when the pantograph detection collation value is equal to or smaller than the direction code search threshold value, it is determined that the pantograph 1a does not exist in the search range B, and is regarded as having no pantograph. The presence / absence of the pantograph 1a thus obtained is output to the inspection control unit 54 as a result of the presence / absence of the pantograph.
  • a direction code search threshold value hereinafter referred to as a direction code search threshold value
  • the search range B and the direction code search threshold are collectively referred to as direction code search parameters.
  • the pantograph detection position and the pantograph detection collation value are collectively referred to as direction code search result data.
  • the storage unit 55 stores image data such as the direction code search parameter, the pantograph comparison data, the pantograph reference image 3 and the input image 5 and the reference code image 7 transmitted from the recording unit 52 of the photographing function unit 50A.
  • image data such as the direction code search parameter, the pantograph comparison data, the pantograph reference image 3 and the input image 5 and the reference code image 7 transmitted from the recording unit 52 of the photographing function unit 50A.
  • the present embodiment in addition to the effects of the first embodiment, it is robust against brightness fluctuations caused by changes in sunshine, and the presence / absence of a pantograph in the image can be determined more stably.
  • FIG. 14 is a block diagram illustrating a configuration of a pantograph photographing apparatus using image processing according to the present embodiment.
  • an image output function unit 50C shown in FIG. 14 is added to the image processing apparatus 50 of the first embodiment.
  • Other configurations are substantially the same as those described in the first embodiment.
  • the same reference numerals are given to the same operations as those shown in FIGS. However, the differences will be mainly described.
  • the image processing apparatus 50 captures and records the pantograph 1a of the vehicle 1 that is running, and the imaging function unit 50A for recording the pantograph 1a from the images recorded by the imaging function unit 50A.
  • the imaging function unit 50A for recording the pantograph 1a from the images recorded by the imaging function unit 50A.
  • an image output function unit 50C that outputs the stored image is provided.
  • the image output function unit 50C includes an image output control unit 59 and an image output unit 60 shown in FIG.
  • the image output control unit 59 stores an image output signal for designating which image is to be output to a display unit (not shown) out of the image data stored in the storage unit 55 of the pantograph image storage function unit 50B. It transmits to the memory
  • the storage unit 55 of the pantograph image storage function unit 50B receives the image output signal from the image output control unit 59 of the image output function unit 50C, and converts the image data designated as the output image into the image output unit of the image output function unit 50C. 60.
  • the image output unit 60 outputs the image data transmitted from the storage unit 55 of the pantograph image storage function unit 50B to the display unit.
  • the stored image can be output, and the image on which the pantograph is displayed can be easily browsed.
  • the pantograph photographing apparatus based on image processing according to the present invention is not limited to the above-described embodiment, and records an image of the pantograph 1a based on the detection result of the pantograph detection sensor 40, and from among the recorded images. Needless to say, the presence or absence of the pantograph 1a may be detected, and various modifications are possible without departing from the spirit of the present invention.
  • the present invention is suitable for application to a pantograph photographing apparatus using image processing.

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  • Image Analysis (AREA)

Abstract

L'invention porte sur un moyen de traitement d'image (50) qui comporte une unité de fonction de photographie (50A) qui est composée d'un moyen de commande de photographie (51) qui commande la présence ou l'absence d'une image enregistrée (Figure 5) en fonction du résultat de détection d'un moyen de détection de structure (40), et un moyen d'enregistrement (52) dans lequel l'image d'entrée (Figure 5) est stockée temporairement, et une unité de fonction de détection de pantographe (50B) qui est composée d'un moyen de stockage (55) pour obtenir et stocker l'image d'entrée (Figure 5) du moyen d'enregistrement (52), un moyen de détection de pantographe (56) pour récupérer la présence ou l'absence d'un pantographe (1a) par traitement de l'image d'entrée (Figure 5), et un moyen de commande d'inspection (54) pour transmettre un signal indicatif de l'élimination du signal d'entrée (Figure 5) au moyen de stockage (55) lorsqu'aucun pantographe (1a) n'est indiqué dans l'image d'entrée (Figure 5). Avec cette structure, il est possible de stocker efficacement les images indiquant qu'un véhicule (1) passe dans le champ de vision d'un moyen de photographie (30) et de récupérer automatiquement le pantographe (1a) à partir des images enregistrées.
PCT/JP2010/050987 2009-01-27 2010-01-26 Appareil de photographie de pantographe par traitement d'image WO2010087347A1 (fr)

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RU2011135829/11A RU2491182C2 (ru) 2009-01-27 2010-01-26 Устройство фотосъемки токоприемника посредством обработки изображений
CN2010800055432A CN102300741A (zh) 2009-01-27 2010-01-26 基于图像处理的受电弓摄影装置

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JP2009014851A JP2010176156A (ja) 2009-01-27 2009-01-27 画像処理によるパンタグラフ撮影装置
JP2009-014851 2009-01-27

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JP6251904B2 (ja) * 2014-03-26 2017-12-27 株式会社明電舎 パンタグラフ舟体熔損検査装置
CN107743577B (zh) * 2015-06-15 2020-06-09 韩国铁道技术研究院 用于检测电动铁道车辆的振动信息的方法和装置
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