CN109624996A - A kind of method and system based on image recognition linkage control train door and gate - Google Patents

A kind of method and system based on image recognition linkage control train door and gate Download PDF

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Publication number
CN109624996A
CN109624996A CN201910074933.8A CN201910074933A CN109624996A CN 109624996 A CN109624996 A CN 109624996A CN 201910074933 A CN201910074933 A CN 201910074933A CN 109624996 A CN109624996 A CN 109624996A
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China
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train
door
speed
default
current
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CN109624996B (en
Inventor
王啸
肖义
王飞
梅嘉伦
沈刚勇
王宝星
耿稣骏
于肖博
段东梅
赵小聪
谢学涛
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Ningbo CRRC Times Transducer Technology Co Ltd
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Ningbo CRRC Times Transducer Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61BRAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B1/00General arrangement of stations, platforms, or sidings; Railway networks; Rail vehicle marshalling systems
    • B61B1/02General arrangement of stations and platforms including protection devices for the passengers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L13/00Operation of signals from the vehicle or by the passage of the vehicle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)

Abstract

The method based on image recognition linkage control train door and gate that the present invention provides a kind of can not achieve gate following train door synchronous linked switch to solve the problems, such as in the prior art.This method is comprising steps of S1: obtaining the image information in preset range, and saves;S2: judge whether current train speed is zero-speed;S3: if current train speed is zero-speed, judge whether the current door position variation of train is that default open changes;S4: if the current door position variation of train opens variation to be default, the current car door opening signal of train is sent to platform door control unit;If the variation of current train door position closes variation to be default, current train closing of the door signal is sent to platform door control unit.This method can be sent to platform door control unit in conjunction with actual conditions confirmation train status and by train status, and realization gate following train door synchronous linked switch purpose meets real-time, reliability and high efficiency.

Description

A kind of method and system based on image recognition linkage control train door and gate
Technical field
The present invention relates to safety of urban transit technical fields, more particularly to a kind of image recognition linkage control that is based on to arrange The system of car door and gate.
Background technique
Currently, the rail traffic platforms such as city underground, light rail use (entirely for energy conservation and safety on rail traffic platform High or half height) (shield door) Xi Tong ﹙ PSD ﹚, place of the barrier shield of system around platform away from edge 30CM or so is even for gate Continuous arrangement separates out with rail travelling crane the platform area that waits, and barrier shield is equipped with the gate (shield door) that passenger goes up Train The Train door stopped on channel, gate (shield door) and track corresponds, and usually gate (shield door), which is in, closes And locking states, coordinate to match jointly by the door device of train itself, signal system and gate (shield door) control system It closes and realizes gate (shield door) opening and closing synchronous with train door, endanger so that passenger be avoided to enter tunnel from platform Danger.
After subway or light rail enter platform, train deceleration is to when stopping, needing to judge whether train stops completely, i.e., Zero-speed detection;Train door is in normal condition before not opening between train door and gate;Train door open, close The state of identification train door switch is needed in the process.
Therefore zero-speed detection and the state of identification train door switch are the important components in train rail traffic, in order to It solves the above problems, the Chinese patent of Publication No. CN203819231U discloses a kind of train door and gate linkage control System, system include that RFID radio frequency identification system, ZigBee wireless two-way Transmission system, PSL gate control on the spot System and PSA gate condition monitoring system;RFID radio frequency identification system provides the enabled switch letter that train comes to a complete stop in place Number;ZigBee wireless two-way Transmission system completes train door and the instruction of gate switch gate is sent, and platform door state feedback connects The wireless two-way of receipts transmits;Control system completes RFID radio frequency identification system, ZigBee wireless two-way to PSL gate on the spot Data acquisition, transmission and the gate control of Transmission system;PSA gate condition monitoring system completes the operation note of all events The monitoring and control of record, malfunction alarm and on-line parameter adjustment.
However train signal system in the prior art intelligently sends unified switch gate order, if the single vehicle of single unit vehicle Door, which breaks down, is isolated, and corresponding gate, which can not receive timely information, still will do it switch gate movement, is influenced Passenger getting on/off;Once and train signal system jam, permutation gate all will be unable to carry out switch gate movement;Using Additional apparatus for transmitting signal must on vehicle doorn and gate all upper corresponding signal of installation occur, receiver, increase at Originally it and bears.
It is, therefore, desirable to provide a kind of acquisition train and gate state-detection without signal system transmission signal is System, to solve the above problems.
Summary of the invention
To solve the above-mentioned problems, the present invention provides one kind accesses without extra, and simulation, which manually visualizes, obtains column Car state realizes that one kind of gate following train door synchronous linked switch is based on image recognition linkage control train door and platform The method and system of door.
In order to achieve the above object, the invention adopts the following technical scheme:
A method of based on image recognition linkage control train door and gate, comprising steps of
S1: the image information in preset range is obtained by the camera being arranged on gate predeterminated position, and is saved;
S2: extracting the default train fixed character in consecutive frame image information, and in conjunction with default zero-speed algorithm, forefront is worked as in judgement Whether vehicle speed is zero-speed;
S3: if current train speed is zero-speed, the default car door feature in consecutive frame image information is extracted, in conjunction with default position Algorithm is set, judges whether the current door position variation of train is that default open changes;
S4: if the current door position variation of train opens variation to be default, the current car door opening signal of train is sent extremely Platform door control unit;If the variation of current train door position closes variation to be default, current train closing of the door letter is sent Number to platform door control unit.
Further, before step S1 comprising steps of
By the camera being arranged on gate predeterminated position, the image information without train in preset range is obtained;
Background modeling is carried out to the image in the preset range of acquisition without train, generates default background;
Background is saved with image format.
Further, step S2 includes:
S21: the train image in image information is subjected to threshold value division and integral projection;
S22: the window on train adhesive tape feature in image information is extracted.
S23: the image information of consecutive frame and default background are subjected to image comparison;
S24: judge whether the position that window on train adhesive tape is corresponded in consecutive frame changes;
S25: if the position for corresponding to window on train adhesive tape in consecutive frame changes, confirm that current train speed is not zero Speed;If the position for corresponding to window on train adhesive tape in consecutive frame does not change, confirm that current train speed is zero-speed.
Further, step S3 includes:
S31: when train speed is zero-speed, the Train door door frame adhesive tape feature in consecutive frame image information is extracted;
S32: the image information of consecutive frame and default background are subjected to image comparison;
S33: whether the change in location for judging Train door door frame adhesive tape in consecutive frame is that default open changes;
Further, which is characterized in that step S4 includes:
S41: if the change in location of Train door door frame adhesive tape is that default open changes in consecutive frame, confirm current train vehicle Door state is open state;If the change in location of Train door door frame adhesive tape is that default close changes in consecutive frame, confirmation is current Train door state is in off state;
S42: Train door state is sent to platform door control unit.
A kind of system based on image recognition linkage control train door and gate characterized by comprising
Camera, the camera is arranged on gate predeterminated position, for obtaining the image information in preset range, And it saves;
Train zero-speed confirmation module, for extracting the default train fixed character in consecutive frame image information, in conjunction with default Zero-speed algorithm judges whether current train speed is zero-speed;
Vehicle door status judgment module, for extracting the default vehicle in consecutive frame image information when train speed is zero-speed Door feature judges whether the current door position variation of train is that default open changes in conjunction with predeterminated position algorithm;
Vehicle door status sending module, for Train door current state to be sent to platform door control unit.
Further, further includes:
Background module is generated, for the camera by being arranged on gate predeterminated position, obtains nothing in preset range The image information of train carries out background modeling to the image in the preset range of acquisition without train, generates default background;
Background preserving module, for saving the background of generation with image format.
Further, train zero-speed confirmation module includes:
Image divides projecting cell, for the train image in image information to be carried out threshold value division and integral projection;
Fixed character unit is extracted, for extracting the window on train adhesive tape feature in image information.
Image background comparing unit, for the image information of consecutive frame and default background to be carried out image comparison;
Change in location unit is judged, for judging whether the position for corresponding to window on train adhesive tape in consecutive frame changes;
Train speed's unit is confirmed, for confirming when the position for corresponding to window on train adhesive tape in consecutive frame changes Current train speed is not zero speed;When the position for corresponding to window on train adhesive tape in consecutive frame does not change, current train is confirmed Speed is zero-speed.
Further, vehicle door status judgment module includes:
Car door feature unit is extracted, for extracting the train vehicle in consecutive frame image information when train speed is zero-speed Door frame adhesive tape feature;
Car door image comparing unit, for the image information of consecutive frame and default background to be carried out image comparison;
Door position unit is judged, for judging whether the change in location of Train door door frame adhesive tape in consecutive frame is default Open variation;
Further, vehicle door status sending module includes:
Vehicle door status confirmation unit is that default open becomes for the change in location when Train door door frame adhesive tape in consecutive frame When change, confirmation current train vehicle door status is open state;When the change in location of Train door door frame adhesive tape in consecutive frame is pre- If closing variation, confirmation current train vehicle door status is in off state.
Vehicle door status transmission unit, it is single for current train vehicle door status to be sent to gate control by Ethernet Member.
The invention has the benefit that
(1) image embedded processing scheme is used, driving camera module is monitored gate and train door region, Using image algorithm, the state of the following vehicle speed of current scene and train door switch, the directly image information by obtaining are obtained Judged, so that result is more accurate, efficiently, practicability is stronger.
(2) method in the application based on image recognition linkage control train door and gate can simulate artificial visual Foreign matter is detected, more intuitively, exact can carry out gate for the opening and closing state of each train and train door The judgement of control, more convenient, intellectual monitoring.
(3) image analysis that train is wherein carried out by camera, wherein the image information obtained can be carried out preservation Realize the information of reduction train zero-speed detection and the detection of train door opening and closing state, it is convenient and reliable.
Detailed description of the invention
Fig. 1 is the method flow diagram one based on image recognition linkage control train door and gate;
Fig. 2 is the method flow diagram two based on image recognition linkage control train door and gate;
Fig. 3 is the structural schematic diagram based on image recognition linkage control train door and gate;
Fig. 4 is the system construction drawing one based on image recognition linkage control train door and gate;
Fig. 5 is the system construction drawing two based on image recognition linkage control train door and gate.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described, However, the present invention is not limited to these examples.
Embodiment one
A kind of method based on image recognition linkage control train door and gate is present embodiments provided, such as Fig. 1 to Fig. 3 It is shown, this method comprising steps of
S1: the image information in preset range is obtained by the camera being arranged on gate predeterminated position, and is saved;
S2: extracting the default train fixed character in consecutive frame image information, and in conjunction with default zero-speed algorithm, forefront is worked as in judgement Whether vehicle speed is zero-speed;
S3: if current train speed is zero-speed, the default car door feature in consecutive frame image information is extracted, in conjunction with default position Algorithm is set, judges whether the current door position variation of train is that default open changes;
S4: if the current door position variation of train opens variation to be default, the current car door opening signal of train is sent extremely Platform door control unit;If the variation of current train door position closes variation to be default, current train closing of the door letter is sent Number to platform door control unit.
Further, before step S1 comprising steps of
By the camera being arranged on gate predeterminated position, the image information without train in preset range is obtained;
Background modeling is carried out to the image in the preset range of acquisition without train, generates default background;
Background is saved with image format.
In a kind of method based on image recognition linkage control train door and gate provided in this embodiment, at each station It is both provided with camera on the predeterminated position of platform door, the image information without train in preset range is obtained by camera first, Image in the preset range that will acquire without train carries out background modeling, generates default background, and save with image format.
Zero-speed judgement is carried out to train first, the train zero-speed judgment method wherein provided in the present embodiment is that judgement obtains The change in location of train fixed character is preset in the image information consecutive frame taken, default train fixed character refers in train operation In relative to train be it is static, can determine that the position of train becomes by judging the change in location of default train fixed character Change;Such as window on train adhesive tape, wherein window on train is fixed with respect to train, thus by the train image in image information into Row threshold value divides and integral projection;To in image information window on train adhesive tape and Train door door frame adhesive tape extract;
It therefore can be by window on train in the corresponding image of different time, that is, consecutive frame image information, relative to default back The change in location of scape, i.e., the relative position of former frame and a later frame window on train adhesive tape in contrast images information, if become Change, whether can determine train currently is zero-speed;
Further, in this embodiment it is single the result of train zero-speed detection to be sent to gate control by Ethernet Member.
After train zero-speed, Train door state can be judged, the default car door feature provided in the present embodiment Refer to when Train door opens or closes, can with the movement of Train door the feature of movement;Wherein train is default in arrival Behind parking position, will do it car door opening and closing of the door two movement, corresponding vehicle door status be car door opening state and Closing of the door state.
The image information of consecutive frame and default background are subjected to image comparison;The default car door provided in the present embodiment is special Sign is default door frame adhesive tape, by judging whether the change in location of Train door door frame adhesive tape in consecutive frame is default unlatching Variation opens or closes state judge Train door;If the change in location of Train door door frame adhesive tape is pre- in consecutive frame If opening variation, then judge that current train vehicle door status for open state, and is sent to platform door control unit;If in consecutive frame The change in location of Train door door frame adhesive tape is that default close changes, then judges that current train vehicle door status is in off state, and It is sent to platform door control unit.
After platform door control unit receives the state of Train door, corresponding gate control instruction will do it, control Gate and train door carry out linkage control.
A kind of method based on image recognition linkage control train door and gate provided in this embodiment, it is embedding using image Enter formula processing scheme, driving camera module is monitored gate and train door region, using image algorithm, obtains current The state of scene Train and train door switch is directly judged by the image information obtained, and image detection train is based on Zero-speed state and train enabling, train shutdown state, and train zero-speed information, train enabling information, train shutdown information are passed Platform door controller is passed, gate following train door synchronous switch is promoted to realize linkage, so that result is more accurate, efficiently, Practicability is stronger.
Embodiment two
A kind of system based on image recognition linkage control train door and gate is present embodiments provided, such as Fig. 3 to Fig. 5 Shown, this system includes:
Camera, the camera is arranged on gate predeterminated position, for obtaining the image information in preset range, And it saves;
Train zero-speed confirmation module, for extracting the default train fixed character in consecutive frame image information, in conjunction with default Zero-speed algorithm judges whether current train speed is zero-speed;
Vehicle door status judgment module, for extracting the default vehicle in consecutive frame image information when train speed is zero-speed Door feature judges whether the current door position variation of train is that default open changes in conjunction with predeterminated position algorithm;
Vehicle door status sending module, for Train door current state to be sent to platform door control unit.
Further, further includes:
Background module is generated, for the camera by being arranged on gate predeterminated position, obtains nothing in preset range The image information of train carries out background modeling to the image in the preset range of acquisition without train, generates default background;
Background preserving module, for saving the background of generation with image format.
Further, train zero-speed confirmation module includes:
Image divides projecting cell, for the train image in image information to be carried out threshold value division and integral projection;
Fixed character unit is extracted, for extracting the window on train adhesive tape feature in image information.
Image background comparing unit, for the image information of consecutive frame and default background to be carried out image comparison;
Change in location unit is judged, for judging whether the position for corresponding to window on train adhesive tape in consecutive frame changes;
Train speed's unit is confirmed, for confirming when the position for corresponding to window on train adhesive tape in consecutive frame changes Current train speed is not zero speed;When the position for corresponding to window on train adhesive tape in consecutive frame does not change, current train is confirmed Speed is zero-speed.
Further, vehicle door status judgment module includes:
Car door feature unit is extracted, for extracting the train vehicle in consecutive frame image information when train speed is zero-speed Door frame adhesive tape feature;
Car door image comparing unit, for the image information of consecutive frame and default background to be carried out image comparison;
Door position unit is judged, for judging whether the change in location of Train door door frame adhesive tape in consecutive frame is default Open variation;
Further, vehicle door status sending module includes:
Vehicle door status confirmation unit is that default open becomes for the change in location when Train door door frame adhesive tape in consecutive frame When change, confirmation current train vehicle door status is open state;When the change in location of Train door door frame adhesive tape in consecutive frame is pre- If closing variation, confirmation current train vehicle door status is in off state.
Vehicle door status transmission unit, it is single for current train vehicle door status to be sent to gate control by Ethernet Member.
Platform door control unit can carry out phase according to the train zero-speed of acquisition and the opening and closing state of Train door The gate answered opens and closes control, realizes the purpose of each train door opening synchronous with gate under zero-speed state, makes It is more intelligent, accurate to obtain Train Control.
System provided in this embodiment based on image recognition linkage control train door and gate, in each gate and A camera is equipped between vehicle doorn, it can be achieved that bit switch.And train zero-speed and car door are carried out using image processing techniques The extraction of switch state signal is directly transferred to platform door control unit by RJ45 Ethernet, does not need train signal system And additional signal device;So that result is more accurate, efficiently, practicability is stronger.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Claims (10)

1. a kind of method based on image recognition linkage control train door and gate, which is characterized in that comprising steps of
S1: the image information in preset range is obtained by the camera being arranged on gate predeterminated position, and is saved;
S2: extracting the default train fixed character in consecutive frame image information, in conjunction with default zero-speed algorithm, judges current train speed Whether degree is zero-speed;
S3: if current train speed is zero-speed, the default car door feature in consecutive frame image information is extracted, is calculated in conjunction with predeterminated position Method judges whether the current door position variation of train is that default open changes;
S4: if the current door position variation of train opens variation to be default, the current car door opening signal of train is sent to platform Door control unit;If the variation of current train door position closes variation to be default, current train closing of the door signal is sent extremely Platform door control unit.
2. a kind of method based on image recognition linkage control train door and gate according to claim 1, feature Be, before step S1 comprising steps of
By the camera being arranged on gate predeterminated position, the image information without train in preset range is obtained;
Background modeling is carried out to the image in the preset range of acquisition without train, generates default background;
Background is saved with image format.
3. a kind of method based on image recognition linkage control train door and gate according to claim 2, feature It is, step S2 includes:
S21: the train image in image information is subjected to threshold value division and integral projection;
S22: the window on train adhesive tape feature in image information is extracted;
S23: the image information of consecutive frame and default background are subjected to image comparison;
S24: judge whether the position that window on train adhesive tape is corresponded in consecutive frame changes;
S25: if the position for corresponding to window on train adhesive tape in consecutive frame changes, confirm that current train speed is not zero speed; If the position for corresponding to window on train adhesive tape in consecutive frame does not change, confirm that current train speed is zero-speed.
4. a kind of method based on image recognition linkage control train door and gate according to claim 2, feature It is, step S3 includes:
S31: when train speed is zero-speed, the Train door door frame adhesive tape feature in consecutive frame image information is extracted;
S32: the image information of consecutive frame and default background are subjected to image comparison;
S33: whether the change in location for judging Train door door frame adhesive tape in consecutive frame is that default open changes.
5. a kind of method based on image recognition linkage control train door and gate according to claim 2, feature It is, step S4 includes:
S41: if the change in location of Train door door frame adhesive tape is that default open changes in consecutive frame, confirm current train car door shape State is open state;If the change in location of Train door door frame adhesive tape is that default close changes in consecutive frame, current train is confirmed Vehicle door status is in off state;
S42: Train door state is sent to platform door control unit.
6. a kind of system based on image recognition linkage control train door and gate characterized by comprising
Camera, the camera are arranged on gate predeterminated position, for obtaining the image information in preset range, and protect It deposits;
Train zero-speed confirmation module, for extracting the default train fixed character in consecutive frame image information, in conjunction with default zero-speed Algorithm judges whether current train speed is zero-speed;
Vehicle door status judgment module, for when train speed is zero-speed, the default car door extracted in consecutive frame image information to be special Sign judges whether the current door position variation of train is that default open changes in conjunction with predeterminated position algorithm;
Vehicle door status sending module, for Train door current state to be sent to platform door control unit.
7. a kind of system based on image recognition linkage control train door and gate according to claim 6, feature It is, further includes:
Background module is generated, for the camera by being arranged on gate predeterminated position, is obtained in preset range without train Image information, background modeling is carried out to the image in the preset range of acquisition without train, generates default background;
Background preserving module, for saving the background of generation with image format.
8. a kind of system based on image recognition linkage control train door and gate according to claim 7, feature It is, train zero-speed confirmation module includes:
Image divides projecting cell, for the train image in image information to be carried out threshold value division and integral projection;
Fixed character unit is extracted, for extracting the window on train adhesive tape feature in image information;
Image background comparing unit, for the image information of consecutive frame and default background to be carried out image comparison;
Change in location unit is judged, for judging whether the position for corresponding to window on train adhesive tape in consecutive frame changes;
Train speed's unit is confirmed, for when the position for corresponding to window on train adhesive tape in consecutive frame changes, confirmation to be current Train speed is not zero speed;When the position for corresponding to window on train adhesive tape in consecutive frame does not change, current train speed is confirmed For zero-speed.
9. a kind of system based on image recognition linkage control train door and gate according to claim 7, feature It is, vehicle door status judgment module includes:
Car door feature unit is extracted, for extracting the Train door door in consecutive frame image information when train speed is zero-speed Frame glue feature;
Car door image comparing unit, for the image information of consecutive frame and default background to be carried out image comparison;
Door position unit is judged, for judging whether the change in location of Train door door frame adhesive tape in consecutive frame is default unlatching Variation.
10. a kind of system based on image recognition linkage control train door and gate according to claim 7, feature It is, vehicle door status sending module includes:
Vehicle door status confirmation unit is that default open changes for the change in location when Train door door frame adhesive tape in consecutive frame When, confirmation current train vehicle door status is open state;When the change in location of Train door door frame adhesive tape in consecutive frame is default Variation is closed, confirmation current train vehicle door status is in off state;
Vehicle door status transmission unit, for current train vehicle door status to be sent to platform door control unit by Ethernet.
CN201910074933.8A 2019-01-25 2019-01-25 Method and system for linkage control of train door and platform door based on image recognition Active CN109624996B (en)

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CN110217262A (en) * 2019-05-29 2019-09-10 成都希格玛光电科技有限公司 The track clearance intrusion detection method and device compared based on image
CN112854944A (en) * 2021-02-01 2021-05-28 高朋飞 High-speed rail platform door control method and device and high-speed rail platform door
CN113238294A (en) * 2021-06-21 2021-08-10 北京宏锐星通科技有限公司 Millimeter wave based non-contact type vehicle door anti-pinch detection method and system

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CN205224922U (en) * 2015-12-25 2016-05-11 天津众利和自动化科技有限公司 Ground iron shield door control system

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CN112854944A (en) * 2021-02-01 2021-05-28 高朋飞 High-speed rail platform door control method and device and high-speed rail platform door
CN112854944B (en) * 2021-02-01 2023-02-17 高朋飞 High-speed rail platform door control method and device and high-speed rail platform door
CN113238294A (en) * 2021-06-21 2021-08-10 北京宏锐星通科技有限公司 Millimeter wave based non-contact type vehicle door anti-pinch detection method and system

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