CN110348380A - A kind of visualization grounding switch state video recognition system and method - Google Patents
A kind of visualization grounding switch state video recognition system and method Download PDFInfo
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- CN110348380A CN110348380A CN201910619449.9A CN201910619449A CN110348380A CN 110348380 A CN110348380 A CN 110348380A CN 201910619449 A CN201910619449 A CN 201910619449A CN 110348380 A CN110348380 A CN 110348380A
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- 238000012800 visualization Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004458 analytical method Methods 0.000 claims abstract description 21
- 230000000007 visual effect Effects 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000005530 etching Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000010191 image analysis Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/255—Detecting or recognising potential candidate objects based on visual cues, e.g. shapes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/94—Hardware or software architectures specially adapted for image or video understanding
- G06V10/95—Hardware or software architectures specially adapted for image or video understanding structured as a network, e.g. client-server architectures
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
Abstract
A kind of visualization grounding switch state video recognition system of the present invention and method are visualized earthing or grounding means for grounding switch real-time pictures and are transferred to visual analysis unit in a manner of video flowing；Visual analysis unit completes the conversion that video flows to picture format by therefrom interception image picture；Shielding area mark, luminance proportion adjusting and crucial identification region identification are carried out to the picture after conversion again, then export grounding switch current status data, and access in the form of signal condition for external system；Signal processing unit accesses the disconnecting link signal state data of visual analysis unit output, and generates final grounding apparatus signal condition after the progress operation of comprehensive mechanical travel switch signal.The present invention realizes merging for status switch signal and video state signal, can further improve the safety of system, reduces to artificial dependence；Be conducive to improve rail traffic production safety.
Description
Technical field
The present invention relates to visualization grounding technology field, specially a kind of visualization grounding switch state video recognition systems
And method.
Background technique
Visualization earthing or grounding means in rail traffic has been applied on a large scale at present, the efficiency and peace for producing subway
Full property is greatly improved.But the dependence that existing apparatus is inspected to travel switch and manually is higher, when one of them
When link goes wrong or neglects, exception or accident may cause.
Conventional visualization earthing or grounding means to the judgement of grounding switch opening and closing state mainly based on travel switch, and it is auxiliary
To pass through camera manual video confirmation in device.When equipment breaks down, travel switch is abnormal, and simultaneously operator not into
When pedestrian's work video check confirms, the operation exception of equipment or system may be caused, so as to cause there is safety accident.
In existing technical solution, a visualization ground connection station control host can access and manage multiple visualization ground connection dresses
It sets, visualization ground connection station control host, which only passes through disconnecting link status switch to the equipment state of the visualization earthing or grounding means managed, to be believed
Number judged, and visualizes the video image that camera acquires in earthing or grounding means and only have real-time artificial look facility.Disconnecting link
Status switch signal and video image data are grounded the signal processing unit and video monitoring list of station control host by visualization respectively
Member is handled respectively, does not carry out necessary fusion.
As shown in Figure 1, existing conventional disconnecting link state video identification technology is mainly using the side for being similar to Car license recognition
Formula identifies the profile edge of disconnecting link, and the judgement of disconnecting link state is then carried out to the profile edge.It is mainly comprised the processes of
1, image is obtained in video streaming；
2, (binary conversion treatment, gray proces etc.) are pre-processed to image；
3, the exterior contour (carrying out outline identification using operators such as Canny) in image is identified；
4, the profile of similar disconnecting link is detected；
5, the angle of disconnecting link is judged according to disconnecting link profile；
6, opening and closing state is judged according to disconnecting link angle；
The prior art fully relies on grounding switch status switch to the detection of visualization earthing or grounding means equipment state, once it should
Switch, which breaks down, will lead to erroneous judgement of the system to state, bring hidden danger to rail traffic, personal safety.Meanwhile visualization connects
Camera video image collected in ground device need to manually check confirmation, higher to artificial dependence, may be due to personnel
Neglect and leads to security risk.
There is also several disadvantages for existing video identification technology: 1, being influenced by equipment periphery illumination condition very big, illumination is slightly
When poor, it can not be identified；2, disconnecting link can generate larger color difference after the aging of equipment longtime running, so as to cause that can not be known
Not；3, in conventional images treatment process, the processes such as image preprocessing, exterior contour identification be both needed to repeatedly to analyze image and
Calculation process, recognizer take a long time, generally 100ms or more.
Summary of the invention
Know in view of the above-mentioned problems, the purpose of the present invention is to provide one kind for visualization grounding switch state key feature
Other system and method, and using from the treatment process ground, realize identification more higher than existing state video identification technology
Accuracy and recognition efficiency can make recognition accuracy be greatly improved, and can complete disconnecting link state in a shorter time
Identification.Technical solution is as follows:
A kind of visualization grounding switch state video recognition system, including visualization earthing or grounding means, visual analysis unit, letter
Number processing unit and external system；It visualizes earthing or grounding means and grounding switch real-time pictures is passed through into built-in camera with video flowing
Mode is transferred to visual analysis unit；Visual analysis unit from the video flowing that visualization earthing or grounding means is sent by constantly cutting
Image frame is taken, the conversion that video flows to picture format is completed；The picture after conversion is analyzed and identified again, output ground connection
Disconnecting link current status data, and accessed in the form of signal condition for external system；
The knife that signal processing unit is exported in signal processing with Modbus-TCP protocol access visual analysis unit
Lock signal state data, and final grounding apparatus signal condition is generated after the progress operation of comprehensive mechanical travel switch signal, and
It is accessed with Modbus-TCP agreement for external system.
A kind of visualization grounding switch state video frequency identifying method, comprising the following steps:
Step 1: connection visualization earthing or grounding means camera obtains image in video streaming；
Step 2: image is pre-processed:
1) identification shielding region: judging position of the current pixel point in whole image, and with the shielding area of setting into
Row compares, and if the point in shielding area, is then judged as the point that need to be shielded, and it is completely black for setting the pixel；
2) adjust luminance proportion: by calculate RGB component obtain current pixel brightness, and according to g (i, j)=α f (i, j)+
β adjusts brightness to setting range；Wherein, g (i, j) is object pixel brightness, and f (i, j) is current pixel brightness；α and β is gain
Variable, and α > 0；；
3) it identifies crucial identification region: judging that pixel color is biased to by the difference to pixel RGB component, if color is close
Like identification region color, then retain the pixel color, otherwise set is completely black；It is described key identification region be one piece on disconnecting link with
The region of special color etching；
Step 3: the angle of disconnecting link is judged according to crucial identification region image；
Step 4: opening and closing state, the disconnecting link status signal of output are judged according to disconnecting link angle；
Step 5: according to the acquiring video information disconnecting link mechanical trip on-off model of visualization earthing or grounding means, by disconnecting link shape
State signal and disconnecting link mechanical trip on-off model judge with gate logic, when two kinds of judgment modes provide identical earthing
When gate position state, output determines identical result with two kinds；When two kinds of judgment modes provide different grounding switch location status
When, export fault-signal.
Further, between step 2 and step 3 further include: to the crucial identification region image identified again according to
Picture characteristics from pixel quantity, image Aspect Ratio in terms of judged, to confirm whether distinguishing mark image correct.
The beneficial effects of the present invention are:
1) present invention is grounded in station control host in visualization increases visual analysis unit, which is analyzed using machine vision
Technology is substituted with computer and is manually analyzed automatically camera video image collected in visualization earthing or grounding means, and is sentenced
It is disconnected to go out to visualize the current disconnecting link state of earthing or grounding means；And analysis result is changed into signal of communication, it is transmitted to signal processing list
Member is compared operation with visualization earthing or grounding means disconnecting link mechanical trip on-off model, finally most by signal processing unit output
Terminate fruit.The signal can be with completely compatible prior art；
2) video image in present invention visualization earthing or grounding means, which can also synchronize, is transmitted to video monitor unit, completely compatible
Prior art；
3) present invention increases visual analysis unit on the basis of existing technology, and video image, which is automatically analyzed, becomes shape
State signal realizes merging for status switch signal and video state signal by the operation of signal processing unit；It can be further
The safety of raising system is reduced to artificial dependence；Be conducive to improve rail traffic production safety.
Detailed description of the invention
Fig. 1 is traditional technical solution schematic diagram.
Fig. 2 is the overall structure diagram of present invention visualization grounding switch state video recognition system.
Fig. 3 is data signal conversion process schematic diagram in present invention visualization grounding switch state video recognition system.
Fig. 4 is that the method for the present invention carries out pretreatment and crucial identification region image recognition processes flow chart to image.
Specific embodiment
The present invention is described in further details in the following with reference to the drawings and specific embodiments.As shown in Fig. 2, visualization ground connection
Disconnecting link state video recognition system includes visualization earthing or grounding means, visual analysis unit, signal processing unit and external system；It can
It is passed in a manner of video flowing by Ethernet in real time depending on changing the grounding switch real-time pictures in earthing or grounding means built-in camera
It is defeated to arrive visual analysis unit；Image analysis identification software built in visual analysis unit constantly draw from video flowing by interception image
The conversion that video flows to picture format is completed in face.Then, image analysis identification software is analyzed and is identified to the picture again,
Grounding switch current status data is exported, and is accessed in the form of signal condition for external system.Signal processing unit is in signal
The disconnecting link signal state data exported in treatment process with Modbus-TCP protocol access visual analysis unit, and comprehensive other are opened
OFF signal generates final grounding apparatus signal condition after carrying out operation, and is accessed with Modbus-TCP agreement for external system.
The disconnecting link state recognition that the present embodiment proposes is to identify that the crucial identification region etched on disconnecting link substitutes disconnecting link profile
Identification.The key identification region is one piece of region etched on disconnecting link with special color, and region is rectangular region, color
For red (or other colors).
The recognition methods of present invention visualization grounding switch state video recognition system, comprising the following steps:
Step 1: connection visualization earthing or grounding means camera obtains image in video streaming.
Step 2: image is pre-processed:
Wherein image preprocessing process includes balanced brightness of image, shielding area processing, crucial identification region identification.This is several
A treatment process only needs to carry out an analysis to all image pixels that whole processing can be completed, and can greatly improve image point
Analyse treatment effeciency.
1) identification shielding region: judging position of the current pixel point in whole image, and with the shielding area of setting into
Row compares, and if the point in shielding area, is then judged as the point that need to be shielded, and it is completely black for setting the pixel.
2) adjust luminance proportion: by calculate RGB component obtain current pixel brightness, and according to g (i, j)=α f (i, j)+
β adjusts brightness to setting range；Wherein, g (i, j) is object pixel brightness, and f (i, j) is current pixel brightness；α and β is gain
Variable, and α > 0.
3) it identifies crucial identification region: judging that pixel color is biased to by the difference to pixel RGB component, if color is close
Like identification region color, then retain the pixel color, otherwise set is completely black；It is described key identification region be one piece on disconnecting link with
The region of special color etching.
It, can root again to the crucial identification region image identified in order to ensure identifying accuracy in this algorithmic procedure
Accurately judged according to picture characteristics from pixel quantity, the Aspect Ratio of image etc..
Step 3: the angle of disconnecting link is judged according to crucial identification region image.
Step 4: opening and closing state, the disconnecting link status signal of output are judged according to disconnecting link angle.
Step 5: according to the acquiring video information disconnecting link mechanical trip on-off model of visualization earthing or grounding means, by disconnecting link shape
State signal and disconnecting link mechanical trip on-off model judge with gate logic, when two kinds of judgment modes provide identical earthing
When gate position state, output determines identical result with two kinds；When two kinds of judgment modes provide different grounding switch location status
When, export fault-signal.As shown in table 1.
Table 1: grounding switch location status decision logic
The present invention increases visual analysis unit on the basis of existing technology, and video image, which is automatically analyzed, becomes state
Signal realizes merging for status switch signal and video state signal by the operation of signal processing unit.It can further mention
The safety of high system is reduced to artificial dependence, is conducive to improve rail traffic production safety.
Claims (3)
1. a kind of visualization grounding switch state video recognition system, which is characterized in that including visualization earthing or grounding means, vision point
Analyse unit, signal processing unit and external system；It visualizes earthing or grounding means and grounding switch real-time pictures is passed through into built-in camera
Visual analysis unit is transferred in a manner of video flowing；Visual analysis unit passes through constantly from visualization earthing or grounding means transmission
Interception image picture in video flowing completes the conversion that video flows to picture format；The picture after conversion is analyzed and known again
Not, grounding switch current status data is exported, and is accessed in the form of signal condition for external system；
Signal processing unit is in signal processing with the disconnecting link letter of Modbus-TCP protocol access visual analysis unit output
Number status data, and comprehensive mechanical travel switch signal carries out generating final grounding apparatus signal condition after operation, and with
Modbus-TCP agreement is accessed for external system.
2. a kind of recognition methods of visualization grounding switch state video recognition system as described in claim 1, feature exist
In, comprising the following steps:
Step 1: connection visualization earthing or grounding means camera obtains image in video streaming；
Step 2: image is pre-processed:
Identification shielding region: judging position of the current pixel point in whole image, and be compared with the shielding area of setting,
If the point in shielding area, then it is judged as the point that need to be shielded, it is completely black for setting the pixel；
It adjusts luminance proportion: obtaining current pixel brightness by calculating RGB component, and bright according to g (i, j)=f (i, j)+β adjusting
Spend setting range；Wherein, g (i, j) is object pixel brightness, and f (i, j) is current pixel brightness；It is gain variables with β, and
⍺>0；；
It identifies crucial identification region: judging that pixel color is biased to by the difference to pixel RGB component, if color is approximate identification
Field color then retains the pixel color, and otherwise set is completely black；It is described key identification region be one piece on disconnecting link with special face
The region of color etching；
Step 3: the angle of disconnecting link is judged according to crucial identification region image；
Step 4: opening and closing state, the disconnecting link status signal of output are judged according to disconnecting link angle；
Step 5: according to the acquiring video information disconnecting link mechanical trip on-off model of visualization earthing or grounding means, disconnecting link state being believed
Number with disconnecting link mechanical trip on-off model carry out with gate logic judge, when two kinds of judgment modes provide identical grounding switch position
When setting state, output determines identical result with two kinds；It is defeated when two kinds of judgment modes provide different grounding switch location status
Be out of order signal.
3. recognition methods according to claim 2, which is characterized in that between step 2 and step 3 further include: to identification
Crucial identification region image out again according to picture characteristics from pixel quantity, image Aspect Ratio in terms of judged,
To confirm whether distinguishing mark image is correct.
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| CN111026006A (en) * | 2019-11-15 | 2020-04-17 | 中铁二局集团电务工程有限公司 | Subway visual grounding management device convenient to observe and installation method |
| CN111914620A (en) * | 2020-06-12 | 2020-11-10 | 珠海南自电气系统工程有限公司 | Calibration-based disconnecting link state visual identification method |
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| CN113093635A (en) * | 2021-03-02 | 2021-07-09 | 深圳供电局有限公司 | Measurement and control system |
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