CN113191356A - State identification method and related device for switch cabinet pressing plate equipment - Google Patents
State identification method and related device for switch cabinet pressing plate equipment Download PDFInfo
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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
- G06V10/25—Determination of region of interest [ROI] or a volume of interest [VOI]
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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
- G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
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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
- G06V10/40—Extraction of image or video features
- G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
Abstract
The application discloses a state identification method and a related device of switch cabinet pressure plate equipment, wherein the method comprises the following steps: extracting a region of the pressing plate equipment in the template image as a target image, and performing characteristic point enhancement on the target image; dividing the detection image into a plurality of search areas, generating a plurality of search window images with the same size as the target image, and performing characteristic point enhancement on each search window image; sequentially calculating the NCC value of each search window image and the NCC value of the target image by taking the search window image at the center of the detection image towards the outer side as a calculation sequence, and taking the area of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested area; and carrying out Hough circle detection and rectangle detection on the region of interest, and identifying the state of the pressing plate equipment according to the detected circular region and the detected rectangular region. Therefore, the technical problems that in the prior art, positioning errors are easy to occur to the plate pressing equipment, so that the identification is failed, and the identification rate is low are solved.
Description
Technical Field
The application relates to the technical field of image recognition, in particular to a state recognition method and a related device for switch cabinet pressing plate equipment.
Background
The inspection robot of the indoor transformer substation inspects panel equipment of the switch cabinet through autonomous navigation, and identifies the state of a pressing plate, an indicator light, a disconnecting link and meter reading; the pressing plate equipment is a bridge and a link of which the protection device is connected with external wiring, is related to the function of protection and whether an action outlet can normally play a role, is numerous on a panel of the switch cabinet, and belongs to equipment for key inspection. There are three common states of the pressing plate, as shown in fig. 1.
The pressing plate equipment needs to be positioned before being identified, so that the pressing plate equipment to be identified is determined as target equipment, and then the target equipment is identified.
At present, for a target device positioning method, feature matching is usually performed on a template image acquired in advance and a detection image, a homography matrix representing a mapping relationship between the two images is calculated, and then a target device area calibrated on the template image is mapped to the detection image by using the homography matrix, so as to position the target device of the current identification task. The accuracy of the positioning method depends on the matching degree of the characteristic points among the images, and due to the fact that the crimping equipment on the switch cabinet panel is simple in structure and single in background, the accuracy of characteristic matching is reduced due to the fact that the number of the characteristic points of the images is small, the problem of positioning errors is prone to occur, and failure in recognizing the crimping on-off state is caused. And when the state of the target device is identified, the window is moved from top to bottom from left to right on the detection image according to the size of the target device area, the NCC value of the pixel in the window and the template pixel after each pixel is moved is calculated, the NCC value is compared with the threshold, and the position is recorded if the NCC value is larger than the threshold.
Disclosure of Invention
The application provides a state identification method and device of switch cabinet pressure plate equipment, which are used for solving the technical problems that in the prior art, the pressure plate equipment is easy to have positioning errors, so that the identification is failed, and the identification rate is low.
In view of the above, a first aspect of the present application provides a method for identifying a state of a switch cabinet pressure plate device, the method comprising:
extracting a region of a pressing plate device in a template image as a target image, and performing characteristic point enhancement on the target image;
dividing a detection image into a plurality of search areas, generating a plurality of search window images with the same size as a target image, and performing feature point enhancement on each search window image;
sequentially calculating the NCC value of each search window image and the NCC value of the target image by taking the search window image at the center of the detection image towards the outer side as a calculation sequence, and taking the area of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested area;
and carrying out Hough circle detection and rectangle detection on the region of interest, and identifying the state of the pressing plate equipment according to the detected circular region and the detected rectangular region.
Optionally, the performing feature point enhancement on the target image specifically includes:
preprocessing the target image through a Canny algorithm to obtain a binary image only containing the contour information of target equipment;
and calculating data of each contour object in the binary image, and displaying the data on the target image, wherein the data comprises moment, center, arc length and area.
Optionally, performing hough circle detection on the region of interest specifically includes:
setting an initial detection threshold, and gradually reducing the threshold on the basis of the initial detection threshold to perform Hough circle detection on the region of interest until the number of detected circular regions meets a preset number.
Optionally, performing rectangle detection on the region of interest specifically includes:
performing image binarization after performing edge extraction on the region of interest, and acquiring the outline of the binarized image; performing polygonal fitting on each contour, and calculating the angle of the fitted quadrilateral contour; and determining a rectangular area according to the angle of the quadrilateral outline.
Optionally, the identifying the state of the platen device according to the detected circular area and the rectangular area specifically includes:
when the rectangular area is not detected, the pressing plate device is in a first state;
when the straight line distance between the center of the rectangular area and the centers of the two circular areas is larger than a preset threshold value, the plate pressing device is in a second state;
and when the distance between the centers of the rectangular areas and the distance between the centers of the two circular areas are smaller than a preset threshold value, the pressing plate device is in a third state.
A second aspect of the present application provides a status identification apparatus of a switch cabinet platen device, the apparatus comprising:
the first enhancement module is used for extracting a region of the pressing plate equipment in the template image as a target image and enhancing the characteristic points of the target image;
the second enhancement module is used for dividing the detection image into a plurality of search areas, generating a plurality of search window images with the same size as the target image and enhancing the characteristic points of each search window image;
the calculation module is used for sequentially calculating the NCC value of each search window image and the NCC value of the target image by taking the search window image at the center of the detection image towards the outer side as a calculation sequence, and taking the area of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested area;
and the identification module is used for carrying out Hough circle detection and rectangle detection on the region of interest and identifying the state of the pressing plate equipment according to the detected circular region and the detected rectangular region.
Optionally, the first enhancement module is specifically configured to:
extracting a region of the pressing plate device in the template image as a target image;
preprocessing the target image through a Canny algorithm to obtain a binary image only containing the contour information of target equipment;
and calculating data of each contour object in the binary image, and displaying the data on the target image, wherein the data comprises moment, center, arc length and area.
Optionally, the identification module is specifically configured to:
setting an initial detection threshold, and gradually reducing the threshold on the basis of the initial detection threshold to perform Hough circle detection on the region of interest until the number of detected circular regions meets a preset number;
performing image binarization after performing edge extraction on the region of interest, and acquiring the outline of the binarized image; performing polygonal fitting on each contour, and calculating the angle of the fitted quadrilateral contour; determining a rectangular area according to the angle of the quadrilateral outline;
when the rectangular area is not detected, the pressing plate device is in a first state;
when the straight line distance between the center of the rectangular area and the centers of the two circular areas is larger than a preset threshold value, the plate pressing device is in a second state;
and when the distance between the centers of the rectangular areas and the distance between the centers of the two circular areas are smaller than a preset threshold value, the pressing plate device is in a third state.
A third aspect of the application provides a state identification device of a switch cabinet pressure plate device, the device comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to perform the steps of the method for status identification of a switchgear panel apparatus as described above in the first aspect, according to instructions in the program code.
A fourth aspect of the present application provides a computer-readable storage medium for storing program code for executing the method for status identification of a switchgear panel apparatus as described in the first aspect above.
According to the technical scheme, the method has the following advantages:
the application provides a state identification method of a switch cabinet pressure plate device, which comprises the following steps: extracting a region of the pressing plate equipment in the template image as a target image, and performing characteristic point enhancement on the target image; dividing the detection image into a plurality of search areas, generating a plurality of search window images with the same size as the target image, and performing characteristic point enhancement on each search window image; sequentially calculating the NCC value of each search window image and the NCC value of the target image by taking the search window image at the center of the detection image towards the outer side as a calculation sequence, and taking the area of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested area; and carrying out Hough circle detection and rectangle detection on the region of interest, and identifying the state of the pressing plate equipment according to the detected circular region and the detected rectangular region.
Drawings
Fig. 1 is a schematic flowchart of a method for identifying a state of a switch cabinet pressure plate device provided in an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for identifying a state of a switch cabinet pressure plate device provided in an embodiment of the present application;
fig. 3 is a schematic flow chart of a state identification device of a switch cabinet pressure plate device provided in an embodiment of the present application;
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for identifying a state of a switch cabinet pressure plate device according to an embodiment of the present application.
The state identification method for the switch cabinet pressure plate equipment provided by the embodiment comprises the following steps:
And 103, sequentially calculating the NCC value of each search window image and the NCC value of the target image by taking the search window images outside the search window image in the center of the detection image as a calculation sequence, and taking the region of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested region.
And 104, carrying out Hough circle detection and rectangle detection on the region of interest, and identifying the state of the pressing plate equipment according to the detected circular region and the detected rectangular region.
The above is a first embodiment of a method for identifying a state of a switch cabinet pressure plate device provided in the embodiment of the present application, and the following is a second embodiment of the method for identifying a state of a switch cabinet pressure plate device provided in the embodiment of the present application.
Referring to fig. 2, fig. 2 is a schematic flow chart illustrating a method for identifying a state of a switch cabinet pressure plate device according to an embodiment of the present application.
The second embodiment provides a state identification method for a switch cabinet pressure plate device, which includes:
And 204, taking the search window images outside the search window image in the center of the detection image as a calculation sequence, sequentially calculating the NCC value of each search window image and the NCC value of the target image, and taking the area of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested area.
The second embodiment of the method for identifying the state of the switch cabinet pressure plate equipment provided by the embodiment of the present application is as follows.
Referring to fig. 3, fig. 3 is a structural diagram of a state identification device of a switch cabinet pressure plate apparatus according to an embodiment of the present application.
The first enhancement module 301 is configured to extract a region of a platen device in a template image as a target image, and perform feature point enhancement on the target image;
the second enhancement module 302 is used for dividing the detection image into a plurality of search areas, generating a plurality of search window images with the same size as the target image, and enhancing the characteristic points of each search window image;
a calculating module 303, configured to take the search window image outside the search window image in the center of the detection image as a calculating sequence, sequentially calculate an NCC value of each search window image and the NCC value of the target image, and use an area of the detection image corresponding to the search window image with the NCC value greater than a preset threshold as an area of interest;
and the identifying module 304 is configured to perform hough circle detection and rectangle detection on the region of interest, and identify a state of the platen device according to the detected circular region and the detected rectangular region.
Further, the embodiment of the present application also provides a status identification device of a switch cabinet pressure plate device, where the device includes a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is used for executing the state identification method of the switch cabinet pressure plate equipment according to the method embodiment according to the instructions in the program codes.
Further, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is configured to store program codes, and the program codes are configured to execute the method for identifying the state of the switch cabinet pressure plate device according to the above method embodiment.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The terms "first," "second," "third," "fourth," and the like in the description of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A state identification method of a switch cabinet pressure plate device is characterized by comprising the following steps:
extracting a region of a pressing plate device in a template image as a target image, and performing characteristic point enhancement on the target image;
dividing a detection image into a plurality of search areas, generating a plurality of search window images with the same size as a target image, and performing feature point enhancement on each search window image;
sequentially calculating the NCC value of each search window image and the NCC value of the target image by taking the search window image at the center of the detection image towards the outer side as a calculation sequence, and taking the area of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested area;
and carrying out Hough circle detection and rectangle detection on the region of interest, and identifying the state of the pressing plate equipment according to the detected circular region and the detected rectangular region.
2. The method for identifying the state of the switch cabinet pressure plate equipment according to claim 1, wherein the enhancing the characteristic points of the target image specifically comprises:
preprocessing the target image through a Canny algorithm to obtain a binary image only containing the contour information of target equipment;
and calculating data of each contour object in the binary image, and displaying the data on the target image, wherein the data comprises moment, center, arc length and area.
3. The method for identifying the state of the switch cabinet pressure plate equipment according to claim 1, wherein performing hough circle detection on the region of interest specifically comprises:
setting an initial detection threshold, and gradually reducing the threshold on the basis of the initial detection threshold to perform Hough circle detection on the region of interest until the number of detected circular regions meets a preset number.
4. The method for identifying the state of the switch cabinet pressure plate equipment according to claim 1, wherein the rectangular detection of the region of interest specifically comprises:
performing image binarization after performing edge extraction on the region of interest, and acquiring the outline of the binarized image; performing polygonal fitting on each contour, and calculating the angle of the fitted quadrilateral contour; and determining a rectangular area according to the angle of the quadrilateral outline.
5. The method for identifying the state of the switch cabinet pressure plate equipment according to claim 1, wherein the identifying the state of the pressure plate equipment according to the detected circular area and the rectangular area specifically comprises:
when the rectangular area is not detected, the pressing plate device is in a first state;
when the straight line distance between the center of the rectangular area and the centers of the two circular areas is larger than a preset threshold value, the plate pressing device is in a second state;
and when the distance between the centers of the rectangular areas and the distance between the centers of the two circular areas are smaller than a preset threshold value, the pressing plate device is in a third state.
6. A state identification device of a switchgear panel apparatus, comprising:
the first enhancement module is used for extracting a region of the pressing plate equipment in the template image as a target image and enhancing the characteristic points of the target image;
the second enhancement module is used for dividing the detection image into a plurality of search areas, generating a plurality of search window images with the same size as the target image and enhancing the characteristic points of each search window image;
the calculation module is used for sequentially calculating the NCC value of each search window image and the NCC value of the target image by taking the search window image at the center of the detection image towards the outer side as a calculation sequence, and taking the area of the detection image corresponding to the search window image with the NCC value larger than a preset threshold value as an interested area;
and the identification module is used for carrying out Hough circle detection and rectangle detection on the region of interest and identifying the state of the pressing plate equipment according to the detected circular region and the detected rectangular region.
7. The status identification device of a switch cabinet platen apparatus of claim 6, wherein the first enhancement module is specifically configured to:
extracting a region of the pressing plate device in the template image as a target image;
preprocessing the target image through a Canny algorithm to obtain a binary image only containing the contour information of target equipment;
and calculating data of each contour object in the binary image, and displaying the data on the target image, wherein the data comprises moment, center, arc length and area.
8. The status identification device of a switch cabinet platen apparatus of claim 6, wherein the identification module is specifically configured to:
setting an initial detection threshold, and gradually reducing the threshold on the basis of the initial detection threshold to perform Hough circle detection on the region of interest until the number of detected circular regions meets a preset number;
performing image binarization after performing edge extraction on the region of interest, and acquiring the outline of the binarized image; performing polygonal fitting on each contour, and calculating the angle of the fitted quadrilateral contour; determining a rectangular area according to the angle of the quadrilateral outline;
when the rectangular area is not detected, the pressing plate device is in a first state;
when the straight line distance between the center of the rectangular area and the centers of the two circular areas is larger than a preset threshold value, the plate pressing device is in a second state;
and when the distance between the centers of the rectangular areas and the distance between the centers of the two circular areas are smaller than a preset threshold value, the pressing plate device is in a third state.
9. A state identification device of a switchgear panel apparatus, characterized in that it comprises a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the method of status identification of a switchgear panel apparatus as claimed in any of claims 1 to 5 according to instructions in the program code.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium is used for storing program code for performing the method for status recognition of a switchgear cabinet press plate apparatus of any of claims 1 to 5.
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| CN202110546938.3A CN113191356B (en) | 2021-05-19 | 2021-05-19 | State identification method and related device for switch cabinet pressing plate equipment |
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| CN113191356B (en) | 2023-01-31 |
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