CN113255525A - Mechanical water meter reading method and system - Google Patents
Mechanical water meter reading method and system Download PDFInfo
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- CN113255525A CN113255525A CN202110586312.5A CN202110586312A CN113255525A CN 113255525 A CN113255525 A CN 113255525A CN 202110586312 A CN202110586312 A CN 202110586312A CN 113255525 A CN113255525 A CN 113255525A
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Abstract
The scheme relates to a mechanical water meter reading method and system. The method comprises the following steps: acquiring an initial image which contains a mechanical water meter dial and is acquired, and carrying out image preprocessing on the initial image to obtain a target image; inputting the target image into a dial model, and performing dial cutting on the target image through the dial model to obtain a dial image; inputting the dial plate image into a reading model, and identifying dial plate data in the dial plate image through the reading model; and when the dial data passes verification, taking the dial data as the reading data of the mechanical water meter. Through processing the initial image that includes the dial plate, discernment dial plate data and verify, solved the manual work of the personnel of checking meter and read meter and upload the problem of the plenty of time that the system need spend, improved the efficiency and the rate of accuracy of water gauge reading.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a mechanical water meter reading method and system.
Background
The mechanical water meter is used for metering water consumption, and the working principle of the mechanical water meter is that water flow is used for driving the electromechanical water meter to supply water quantitatively through an impeller. In water affairs, the traditional mechanical water meter reading method is that a meter reading person manually identifies and records meter reading, and then the meter reading is uploaded to a system by a computer, so that the meter reading operation of the mechanical water meter is completed. Namely, each time, a meter reading person is required to manually identify and manually record meter reading, and the meter reading is uniformly uploaded to the system from a computer.
However, the traditional meter reading mode of the mechanical water meter often causes manual meter reading by meter reading personnel and a large amount of time is spent on uploading the system; in addition, in the manual meter reading process, because of a plurality of factors, meter reading errors and data uploading errors easily occur, and the problem that system personnel are not easy to check occurs; and some meter reading personnel can directly and artificially estimate the meter reading in the system and upload the meter reading to the system without reading the meter, so that the data of the system and the actual water meter are not unified.
Disclosure of Invention
Based on this, in order to solve the above technical problems, a mechanical water meter reading method and system are provided, which can improve the efficiency and accuracy of reading of the mechanical water meter.
A method of reading a mechanical water meter, the method comprising:
acquiring an initial image which contains a mechanical water meter dial and is acquired, and carrying out image preprocessing on the initial image to obtain a target image;
inputting the target image into a dial model, and performing dial cutting on the target image through the dial model to obtain a dial image;
inputting the dial plate image into a reading model, and identifying dial plate data in the dial plate image through the reading model;
and when the dial data passes verification, taking the dial data as the reading data of the mechanical water meter.
In one embodiment, the image preprocessing the initial image to obtain a target image includes:
and processing the gray scale and the size of the initial image, and simultaneously performing expansion processing on the initial image to obtain a target image.
In one embodiment, the performing dial cutting on the target image through the dial model to obtain a dial image includes:
identifying a dial plate position in the target image through the dial plate model, and calculating a first confidence coefficient of the dial plate position;
and when the first confidence coefficient is greater than a confidence coefficient threshold value, cutting the dial plate position in the target image to obtain a dial plate image.
In one embodiment, the training process of the reading model comprises the following steps:
acquiring training images containing dials;
converting each training image into a target training image with the same size;
labeling dials and numbers in each target training image, and dividing each labeled target training image into a test set and a training set;
and training according to the test set and the training set to generate the reading model.
In one embodiment, the method further comprises:
extracting each digital character string in the dial data, and calculating a second confidence coefficient corresponding to each digital character string;
acquiring coordinates corresponding to the digital character strings;
and screening each digital character string according to the second confidence coefficient and the coordinates to obtain a verification result of the dial data.
In one embodiment, the method further comprises:
displaying verification information according to the verification result;
and when the verification result is that the verification is passed, arranging the digital character strings according to the coordinates and uploading the digital character strings to a water affair system.
In one embodiment, the sending verification information according to the verification result includes:
when the verification result is that the verification is passed, the verification information is that the reading is successful;
and when the verification result is that the verification fails, the verification information is reading failure.
A mechanical water meter reading system, the system comprising:
the system comprises an image acquisition module, a target image acquisition module and a data processing module, wherein the image acquisition module is used for acquiring an acquired initial image containing a mechanical water meter dial and carrying out image preprocessing on the initial image to obtain a target image;
the dial plate cutting module is used for inputting the target image into a dial plate model and cutting the dial plate of the target image through the dial plate model to obtain a dial plate image;
the data reading module is used for inputting the dial plate image into a reading model and identifying the dial plate data in the dial plate image through the reading model;
and the data determining module is used for taking the dial data as the reading data of the mechanical water meter when the dial data passes verification.
According to the mechanical water meter reading method and system, the target image is obtained by acquiring the collected initial image containing the dial plate of the mechanical water meter and performing image preprocessing on the initial image; inputting the target image into a dial model, and performing dial cutting on the target image through the dial model to obtain a dial image; inputting the dial plate image into a reading model, and identifying dial plate data in the dial plate image through the reading model; and when the dial data passes verification, taking the dial data as the reading data of the mechanical water meter. Through processing the initial image that includes the dial plate, discernment dial plate data and verify, solved the manual work of the personnel of checking meter and read meter and upload the problem of the plenty of time that the system need spend, improved the efficiency and the rate of accuracy of water gauge reading.
Drawings
FIG. 1 is a diagram of an environment in which a mechanical water meter reading method may be used in one embodiment;
FIG. 2 is a flow chart illustrating a method of reading a mechanical water meter according to one embodiment;
fig. 3 is a block diagram of a reading system of a mechanical water meter according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that the terms "first," "second," and the like as used herein may be used herein to describe degrees of confidence, but these degrees of confidence are not limited by these terms. These terms are only used to distinguish a first confidence from another confidence. For example, a first confidence level may be referred to as a second confidence level, and similarly, a second confidence level may be referred to as a first confidence level, without departing from the scope of the present application. The first confidence and the second confidence are both confidences, but they are not the same confidence.
The mechanical water meter reading method provided by the embodiment of the application can be applied to the application environment shown in fig. 1. As shown in FIG. 1, the application environment includes a computer device 110. The computer device 110 may obtain an initial image including a mechanical water meter dial, and perform image preprocessing on the initial image to obtain a target image; the computer device 110 may input the target image into the dial model, and perform dial cutting on the target image through the dial model to obtain a dial image; the computer device 110 can input the dial plate image into the reading model, and identify the dial plate data in the dial plate image through the reading model; when the dial data is verified, the computer device 110 can use the dial data as the reading data for the mechanical water meter. The computer device 110 may be, but is not limited to, various smart phones, robots, tablet computers, and other devices.
In one embodiment, as shown in fig. 2, there is provided a method for reading a mechanical water meter, comprising the steps of:
The computer equipment collects the initial image containing the mechanical water meter dial through the camera. Specifically, a user can acquire an initial image through computer equipment, and the computer equipment can detect and identify the acquired initial image and judge whether the initial image contains a mechanical water meter dial. When the initial image is judged not to contain the mechanical water meter dial, the computer equipment can send error reporting information to prompt a user that the mechanical water meter dial does not exist in the acquired initial image; when the initial image contains the mechanical water meter dial, the computer equipment can carry out image preprocessing operation on the initial image so as to obtain a target image.
And 204, inputting the target image into the dial model, and performing dial cutting on the target image through the dial model to obtain a dial image.
Wherein, the dial plate model can be a model which is trained in advance and used for cutting the dial plate in the image.
After obtaining the target image, the computer equipment can input the target image into the dial plate model, so that the dial plate model can be used for cutting the target image to obtain the dial plate image. Specifically, the dial image may be cut by the computer device along the edge of the dial.
Step 206, inputting the dial plate image into the reading model, and identifying the dial plate data in the dial plate image through the reading model.
The reading model may be pre-trained for reading the dial data in the dial image. The computer device can input the dial plate image into a pre-trained reading model, so that the dial plate data in the dial plate image can be identified through the reading model. Wherein the dial data can be used to indicate the metering of water usage.
And step 208, when the dial data passes the verification, taking the dial data as the reading data of the mechanical water meter.
And the computer equipment can perform data verification on the dial data, and when the verification is passed, the computer equipment can use the dial data as final reading data of the mechanical water meter, namely meter reading data.
In the embodiment, a target image is obtained by acquiring a collected initial image containing a mechanical water meter dial and performing image preprocessing on the initial image; inputting the target image into a dial model, and performing dial cutting on the target image through the dial model to obtain a dial image; inputting the dial plate image into a reading model, and identifying dial plate data in the dial plate image through the reading model; and when the dial data passes the verification, taking the dial data as the reading data of the mechanical water meter. Through processing the initial image that includes the dial plate, discernment dial plate data and verify, solved the manual work of the personnel of checking meter and read meter and upload the problem of the plenty of time that the system need spend, improved the efficiency and the rate of accuracy of water gauge reading.
In one embodiment, the provided method for reading a mechanical water meter may further include a process of image preprocessing, where the process includes: and processing the gray scale and the size of the initial image, and simultaneously performing expansion processing on the initial image to obtain a target image.
The computer device may perform an image pre-processing operation on the initial image. Specifically, the computer device may perform the gray processing and the expansion and size processing on the initial image, so as to obtain a processed image, i.e., a target image.
In one embodiment, the provided reading method for the mechanical water meter can further comprise a process of cutting the meter dial, and the specific process comprises the following steps: identifying the dial plate position in the target image through the dial plate model, and calculating a first confidence coefficient of the dial plate position; and when the first confidence coefficient is greater than the confidence coefficient threshold value, cutting the dial plate position in the target image to obtain a dial plate image.
After the computer device identifies the dial position in the target image through the dial model, a first confidence of the dial position can be calculated. In this embodiment, the confidence threshold may be a specific value preset, for example, the confidence threshold may be 98%. When the first confidence is greater than the confidence threshold, the computer device may cut a partial image in the target image corresponding to the position of the dial plate, thereby obtaining an image of the dial plate. Meanwhile, the computer equipment can store the dial plate image obtained after cutting into the server.
In one embodiment, the provided method for reading a mechanical water meter may further include a process of training a reading model, where the specific process includes: acquiring training images containing dials; converting each training image into a target training image with the same size; labeling dials and numbers in each target training image, and dividing each labeled target training image into a test set and a training set; and training according to the test set and the training set to generate a reading model.
The computer equipment can collect a plurality of training images containing the dial plate, and particularly, the computer equipment can collect a large number of images needing to be identified according to the dial plate needing to be identified and the dial plate reading. The computer device may convert all of the collected images into uniformly sized images, i.e., uniformly sized target training images.
Then, the computer equipment can label the table and the number in the processed image; the computer equipment can divide each marked target training image into a test set and a training set according to the proportion of 2:8, convert the test set and the training set into csv files, convert the csv files into train. The computer equipment can generate a corresponding reading model according to the file trained by the cpu.
In one embodiment, the provided reading method for the mechanical water meter can further comprise a process of verifying dial data, and the specific process comprises the following steps: extracting each digital character string in the dial data, and calculating a second confidence coefficient corresponding to each digital character string; acquiring coordinates corresponding to each digital character string; and screening each digital character string according to the second confidence coefficient and the coordinates to obtain a verification result of the dial data.
Specifically, the computer device may extract each numeric character string in the dial data after recognizing the dial data, and calculate a second confidence of each numeric character string; meanwhile, the computer equipment can acquire the coordinates corresponding to each digital character string, namely the position relation of X and Y axes.
The computer device can screen each digital character string according to the second confidence coefficient and the coordinates, and specifically, the computer device can screen data with the second confidence coefficient being greater than 98% and the number of the digits meeting the reading requirement of the mechanical water meter. The computer device may determine a verification result of the dial data from the screening result.
In one embodiment, the provided method for reading the mechanical water meter may further include a process of uploading data, and the specific process includes: displaying verification information according to a verification result; and when the verification result is that the verification is passed, arranging the digital character strings according to the coordinates and uploading the digital character strings to the water affair system.
And after the computer equipment obtains the verification result of the dial data, the verification information can be displayed according to the verification result. When the verification result is that the verification is passed, the computer equipment can arrange all the digital character strings according to the size of an X axis and upload the obtained dial data to a water service system; the problem that some meter reading personnel estimate meter reading is effectively solved, and each piece of data in the water affair system is more real and stable.
In one embodiment, the provided method for reading a mechanical water meter may further include a process of returning a result, where the specific process includes: when the verification result is that the verification is passed, the verification information is that the reading is successful; and when the verification result is that the verification fails, the verification information is that the reading fails.
The computer equipment can return verification information, and when the verification result is that the verification is passed, the verification information returned to the user by the computer equipment is that the reading is successful; when the verification result is that the verification fails, the verification information returned to the user by the computer equipment is reading failure; by timely returning the verification result to the user, the problem elimination of the staff can be more conveniently carried out when the data problem occurs.
It should be understood that, although the steps in the respective flowcharts described above are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in each of the flowcharts described above may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or the stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least a portion of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 3, there is provided a mechanical water meter reading system comprising: an image acquisition module 310, a dial plate cutting module 320, a data reading module 330, and a data determination module 340, wherein:
the image acquisition module 310 is configured to acquire an acquired initial image including a mechanical water meter dial, and perform image preprocessing on the initial image to obtain a target image;
the dial plate cutting module 320 is used for inputting the target image into the dial plate model and performing dial plate cutting on the target image through the dial plate model to obtain a dial plate image;
the data reading module 330 is configured to input the dial plate image into the reading model, and identify dial plate data in the dial plate image through the reading model;
and the data determining module 340 is used for taking the dial data as the reading data of the mechanical water meter when the dial data passes verification.
In one embodiment, the image obtaining module 310 is further configured to process the gray scale and the size of the initial image, and perform an expansion process on the initial image to obtain the target image.
In one embodiment, the dial cutting module 320 is further configured to identify a dial position in the target image through the dial model, and calculate a first confidence of the dial position; and when the first confidence coefficient is greater than the confidence coefficient threshold value, cutting the dial plate position in the target image to obtain a dial plate image.
In one embodiment, the provided mechanical water meter reading system further comprises a model training module, a model reading module and a model reading module, wherein the model training module is used for acquiring training images containing dials; converting each training image into a target training image with the same size; labeling dials and numbers in each target training image, and dividing each labeled target training image into a test set and a training set; and training according to the test set and the training set to generate a reading model.
In one embodiment, the data determining module 340 is further configured to extract each numeric character string in the dial data, and calculate a second confidence corresponding to each numeric character string; acquiring coordinates corresponding to each digital character string; and screening each digital character string according to the second confidence coefficient and the coordinates to obtain a verification result of the dial data.
In one embodiment, the data determination module 340 is further configured to display the verification information according to the verification result; and when the verification result is that the verification is passed, arranging the digital character strings according to the coordinates and uploading the digital character strings to the water affair system.
In one embodiment, the data determination module 340 is further configured to verify the information as the reading success when the verification result is verification pass; and when the verification result is that the verification fails, the verification information is that the reading fails.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of reading a mechanical water meter, the method comprising:
acquiring an initial image which contains a mechanical water meter dial and is acquired, and carrying out image preprocessing on the initial image to obtain a target image;
inputting the target image into a dial model, and performing dial cutting on the target image through the dial model to obtain a dial image;
inputting the dial plate image into a reading model, and identifying dial plate data in the dial plate image through the reading model;
and when the dial data passes verification, taking the dial data as the reading data of the mechanical water meter.
2. The method of reading a mechanical water meter as set forth in claim 1, wherein said pre-processing said initial image to obtain a target image comprises:
and processing the gray scale and the size of the initial image, and simultaneously performing expansion processing on the initial image to obtain a target image.
3. The mechanical water meter reading method of claim 1, wherein said dial cutting of said target image by said dial model to obtain a dial image comprises:
identifying a dial plate position in the target image through the dial plate model, and calculating a first confidence coefficient of the dial plate position;
and when the first confidence coefficient is greater than a confidence coefficient threshold value, cutting the dial plate position in the target image to obtain a dial plate image.
4. The method of reading a mechanical water meter as recited in claim 1, wherein the training process of the reading model comprises:
acquiring training images containing dials;
converting each training image into a target training image with the same size;
labeling dials and numbers in each target training image, and dividing each labeled target training image into a test set and a training set;
and training according to the test set and the training set to generate the reading model.
5. A method of reading a mechanical water meter as recited in claim 1, further comprising:
extracting each digital character string in the dial data, and calculating a second confidence coefficient corresponding to each digital character string;
acquiring coordinates corresponding to the digital character strings;
and screening each digital character string according to the second confidence coefficient and the coordinates to obtain a verification result of the dial data.
6. A method of reading a mechanical water meter as recited in claim 5, further comprising:
displaying verification information according to the verification result;
and when the verification result is that the verification is passed, arranging the digital character strings according to the coordinates and uploading the digital character strings to a water affair system.
7. The mechanical water meter reading method of claim 6, wherein said sending verification information based on said verification result comprises:
when the verification result is that the verification is passed, the verification information is that the reading is successful;
and when the verification result is that the verification fails, the verification information is reading failure.
8. A mechanical water meter reading system, the system comprising:
the system comprises an image acquisition module, a target image acquisition module and a data processing module, wherein the image acquisition module is used for acquiring an acquired initial image containing a mechanical water meter dial and carrying out image preprocessing on the initial image to obtain a target image;
the dial plate cutting module is used for inputting the target image into a dial plate model and cutting the dial plate of the target image through the dial plate model to obtain a dial plate image;
the data reading module is used for inputting the dial plate image into a reading model and identifying the dial plate data in the dial plate image through the reading model;
and the data determining module is used for taking the dial data as the reading data of the mechanical water meter when the dial data passes verification.
9. The mechanical water meter reading system of claim 8, wherein the dial cutting module is further configured to:
identifying a dial plate position in the target image through the dial plate model, and calculating a first confidence coefficient of the dial plate position;
and when the first confidence coefficient is greater than a confidence coefficient threshold value, cutting the dial plate position in the target image to obtain a dial plate image.
10. The mechanical water meter reading system of claim 8, further comprising a model training module for obtaining training images each comprising a dial plate; converting each training image into a target training image with the same size; labeling dials and numbers in each target training image, and dividing each labeled target training image into a test set and a training set; and training according to the test set and the training set to generate the reading model.
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| CN202110586312.5A CN113255525A (en) | 2021-05-27 | 2021-05-27 | Mechanical water meter reading method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115035506A (en) * | 2022-04-22 | 2022-09-09 | 北京百度网讯科技有限公司 | Internet of things-oriented instrument reading acquisition method, electronic equipment and terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115035506A (en) * | 2022-04-22 | 2022-09-09 | 北京百度网讯科技有限公司 | Internet of things-oriented instrument reading acquisition method, electronic equipment and terminal equipment |
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