CN113793303A - Water leakage detection method and system based on image processing - Google Patents
Water leakage detection method and system based on image processing Download PDFInfo
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- CN113793303A CN113793303A CN202110965668.XA CN202110965668A CN113793303A CN 113793303 A CN113793303 A CN 113793303A CN 202110965668 A CN202110965668 A CN 202110965668A CN 113793303 A CN113793303 A CN 113793303A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000011218 segmentation Effects 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 3
- 230000010365 information processing Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 5
- 238000001931 thermography Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/0008—Industrial image inspection checking presence/absence
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/136—Segmentation; Edge detection involving thresholding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
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Abstract
The invention relates to the technical field of image information processing, in particular to a water leakage detection method and system based on image processing, wherein the method comprises the following steps: controlling the laser pen to be in an open state, so that water drops leaked from the pipeline can pass through a laser passage of the laser pen in a water leakage state of the pipeline; acquiring a first video; the first video is obtained by carrying out video acquisition on a laser channel of the laser pen; extracting a key frame in a first video, wherein the key frame is an RGB image; determining a first image according to the key frame, wherein the first image is a gray scale image; if the laser spots exist in the first image, the pipeline water leakage is determined, and the method has the advantages of sensitive reflection, remarkable characteristics and wide detection range.
Description
Technical Field
The invention relates to the technical field of image information processing, in particular to a water leakage detection method and system based on image processing.
Background
With the rapid development of national industry, large-scale plants such as power plants, iron foundries, thermal power plants and the like require a large amount of water resources. Among them, the most common way to transport water resources is pipeline transportation. The normal operation of pipeline transportation is a necessary prerequisite for the normal operation of a plant. Once the water leakage of the pipeline occurs, the serious problems of pipeline breakage, damage of plant machines, power failure, leakage, large-amount capital consumption and maintenance can be caused. Therefore, detecting whether the pipe leaks water is indispensable.
In the prior art, the technologies for detecting water leakage of pipelines mainly include a water leakage detection technology of an infrared thermal imaging method and a water leakage detection technology of a sound wave method. For infrared treatment, water piped in a typical industrial environment is at a higher temperature. Similarly, instruments, temperatures, etc. in the factory environment are also relatively high. If infrared thermal imaging is used, high-temperature instruments, pipelines and the like are likely to be detected in the infrared thermal imaging, so that misjudgment is caused, and the technology is not suitable for pipeline water leakage detection in an industrial environment. The water leakage detection technology by the sound wave method is characterized in that data acquisition processors are additionally arranged at two ends of a water pipe. However, the water pipe in the general industrial environment is long, and the sound wave transmission has a certain delay phenomenon and is not timely transmitted. Meanwhile, the water delivery in the factory is that the water pressure in the water pipe is high, so that the micro-vibration of the water pipe is probably generated, and errors are probably caused.
Therefore, it is necessary to improve the existing pipeline water leakage detection method and develop a simple and efficient water leakage detection scheme to overcome the defects in the prior art.
Disclosure of Invention
The present invention is directed to a method and system for detecting water leakage based on image processing, so as to solve one or more technical problems in the prior art and provide at least one useful choice or creation condition.
In order to achieve the purpose, the invention provides the following technical scheme:
a water leakage detection method based on image processing, the method comprising the steps of:
controlling the laser pen to be in an open state, so that water drops leaked from the pipeline can pass through a laser passage of the laser pen in a water leakage state of the pipeline;
acquiring a first video; the first video is obtained by carrying out video acquisition on a laser channel of the laser pen;
extracting a key frame in a first video, wherein the key frame is an RGB image;
determining a first image according to the key frame, wherein the first image is a gray scale image;
and if the laser spots exist in the first image, determining that the pipeline leaks water.
Further, the color of the laser passage is red; the determining a first image from the keyframe comprises:
combining the G channel and the B channel in the key frame to form a GB image;
and carrying out graying processing on the GB image to obtain a first image.
Further, if it is determined that there is a laser spot in the first image, determining that the pipe leaks water includes:
carrying out image enhancement processing on the first image to obtain a second image;
performing threshold segmentation processing on the second image to determine whether a highlight area exists in the second image;
and if the second image has a highlight area, taking the highlight area as a laser spot, and determining that the pipeline leaks water.
Further, the method further comprises:
if the second image has the highlight areas, determining the minimum circumscribed rectangle of all the highlight areas;
and marking the minimum bounding rectangles of all the highlight areas and displaying the minimum bounding rectangles on the key frame.
A computer readable storage medium having stored thereon a water leakage detection program based on image processing, which when executed by a processor implements the steps of the water leakage detection method based on image processing as recited in any one of the above.
A water leak detection system based on image processing, the system comprising:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one program causes the at least one processor to implement any one of the water leakage detection methods based on image processing described above.
The invention has the beneficial effects that: the invention discloses a water leakage detection method and system based on image processing, and provides a lossless water leakage detection technology, which can overcome the defects that the prior art is influenced by environment temperature and signal transmission speed and the like. The characteristic that the laser penetrates through water and is scattered to generate a special laser image is utilized when the laser is directly irradiated in the air, and the image processing technology is matched to detect whether the water leakage phenomenon exists or not. The invention has the advantages of sensitive reflection, obvious characteristics and wide detection range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a water leakage detection method based on image processing according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating marking of a minimum bounding rectangle of all highlight areas in the second image according to the embodiment of the present invention.
Detailed Description
The conception, specific structure and technical effects of the present application will be described clearly and completely with reference to the following embodiments and the accompanying drawings, so that the purpose, scheme and effects of the present application can be fully understood. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Referring to fig. 1, as shown in fig. 1, a method for detecting water leakage based on image processing according to an embodiment of the present application includes the following steps:
s100, controlling a laser pen to be in an open state, so that water drops leaked from a pipeline can pass through a laser passage of the laser pen in a pipeline water leakage state;
s200, acquiring a first video; the first video is obtained by carrying out video acquisition on a laser channel of the laser pen;
step S300, extracting a key frame in the first video, wherein the key frame is an RGB image;
step S400, determining a first image according to the key frame, wherein the first image is a gray scale image;
and step S500, if the laser spots exist in the first image, determining that the pipeline leaks water.
The invention adopts the laser path of the laser pen to penetrate through the water drops leaked from the pipeline, and detects the water leakage on the basis of no damage to the pipeline; the characteristics that laser does not have light shadow when being directly irradiated in the air, laser penetrates through water and can be scattered, and a special laser image appears are utilized, and the image processing technology is matched to detect whether the phenomenon of water leakage exists, so that the defects that the prior art is influenced by the environment temperature and the signal transmission speed and the like can be overcome. The invention has the advantages of sensitive reflection, obvious characteristics and wide detection range.
In a preferred embodiment, the laser path is red in color; the step S400 includes:
step S410, combining the G channel and the B channel in the key frame to form a GB image;
and step S420, carrying out graying processing on the GB image to obtain a first image.
In some embodiments, step S400 further comprises:
and cutting the GB image to remove the interference image information in the GB image.
Referring to fig. 2, in a preferred embodiment, the step S500 includes:
step S510, performing image enhancement processing on the first image to obtain a second image;
step S520, performing threshold segmentation processing on the second image to determine whether a highlight area exists in the second image;
and step S530, if the second image has the highlight area, the highlight area is used as a laser spot, and the water leakage of the pipeline is determined.
It should be noted that, in the step of performing threshold segmentation processing on the second image, a reasonable threshold may be set according to the brightness of the image, and the main purpose of the step is to determine whether a relatively obvious highlight region exists in the second image, in some embodiments, to better determine whether a highlight region exists in the second image; in some embodiments, the second image is subjected to threshold segmentation processing to obtain a third image and a fourth image; respectively determining the average gray value of the third image and the average gray value of the fourth image, dividing the average gray value of the third image and the average gray value of the fourth image, and comparing the obtained result with a preset proportional threshold; if the obtained result is larger than a preset proportion threshold value, determining whether a highlight area exists in the second image; it will be appreciated that for an accurate determination, the preset ratio threshold needs to be large enough, which in one embodiment is [150, 255 ].
In a preferred embodiment, the method further comprises:
if the second image has the highlight areas, determining the minimum circumscribed rectangle of all the highlight areas;
and marking the minimum bounding rectangles of all the highlight areas and displaying the minimum bounding rectangles on the key frame.
Through the embodiment, the invention can be obtained by detecting whether the water leakage phenomenon exists or not by utilizing the color channel, enhancing the characteristics left when the laser penetrates through the water and identifying the mark, thereby achieving the purpose of detecting whether the water leakage phenomenon exists or not.
The following is an example provided by the present invention for describing the operation and processing steps of the present invention in detail:
1. preparing a laser pen, a water leakage faucet, a camera and the like. The laser pen is arranged at a position below the pipeline, namely water drops can pass through the laser channel in a water leakage state; the laser light path is used in the red color,
2. keeping the laser in an open state, and recording a video;
3. and importing the video by using a digital image processing technology, and extracting the frame number with remarkable characteristics in the video as a key frame.
4. And extracting the G channel and the B channel in the key frame, and combining the G channel and the B channel in the key frame into a new image named as a GB image. The GB image can well highlight the spots of the leaked water after being irradiated by the laser.
5. Generating a gray scale image of the GB image as a first image; and (3) cutting the GB image by highlighting possible laser spots, and removing irrelevant image information in the GB image.
6. And carrying out image enhancement processing on the first image to obtain a second image, and carrying out threshold segmentation on the second image. The laser spot is relatively bright in the second image. Thresholding can make bright areas brighter, enhancing the apparent degree of their features. And if the second image has a highlight area, taking the highlight area as a laser spot, and determining that the pipeline leaks water.
7. And determining and marking the minimum circumscribed rectangle formed by all the laser spots, and simultaneously displaying the minimum circumscribed rectangle on the RGB image.
Compared with the prior art, the invention has the advantages that:
1) the invention belongs to nondestructive detection, and the service performance of an object to be detected is not damaged or influenced during detection.
2) Compared with the sound wave detection in the prior art, the laser emission speed is far faster than the sound wave transmission speed, and the detection of the invention is very sensitive by matching with the computer image processing technology.
3) The water transported by pipelines in general industrial environment has higher temperature. Similarly, instruments, temperatures, etc. in the factory environment are also relatively high. If infrared thermal imaging is used, high-temperature instruments, pipelines and the like are likely to be detected in the infrared thermal imaging device, so that misjudgment is caused. The laser detection of water leakage is not affected by the ambient temperature, and the detection stability is very high.
4) The laser range is far, and even if water leakage occurs at a far position, the color characteristics of the laser can be recorded through the first video as long as water drops leaked from the pipeline pass through a laser passage of the laser pen. The invention has wider detection range.
Corresponding to the method of fig. 1, an embodiment of the present invention further provides a computer-readable storage medium, on which an image processing-based water leakage detection program is stored, which, when executed by a processor, implements the steps of the image processing-based water leakage detection method according to any one of the above embodiments.
Corresponding to the method in fig. 1, an embodiment of the present invention further provides a water leakage detection system based on image processing, where the system includes:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor may implement the water leakage detection method based on image processing according to any of the above embodiments.
The contents in the above method embodiments are all applicable to the present system embodiment, the functions specifically implemented by the present system embodiment are the same as those in the above method embodiment, and the beneficial effects achieved by the present system embodiment are also the same as those achieved by the above method embodiment.
The Processor may be a Central-Processing Unit (CPU), other general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific-Integrated-Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the image processing based water leak detection system, and various interfaces and lines connecting the various parts of the overall image processing based water leak detection system operational apparatus.
The memory may be used to store the computer programs and/or modules, and the processor may implement various functions of the water leakage detection system based on image processing by running or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart-Media-Card (SMC), a Secure-Digital (SD) Card, a Flash-memory Card (Flash-Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
While the description of the present application has been made in considerable detail and with particular reference to a few illustrated embodiments, it is not intended to be limited to any such details or embodiments or any particular embodiments, but it is to be construed that the present application effectively covers the intended scope of the application by reference to the appended claims, which are interpreted in view of the broad potential of the prior art. Further, the foregoing describes the present application in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial changes from the present application, not presently foreseen, may nonetheless represent equivalents thereto.
Claims (6)
1. A water leakage detection method based on image processing is characterized by comprising the following steps:
controlling the laser pen to be in an open state, so that water drops leaked from the pipeline can pass through a laser passage of the laser pen in a water leakage state of the pipeline;
acquiring a first video; the first video is obtained by carrying out video acquisition on a laser channel of the laser pen;
extracting a key frame in a first video, wherein the key frame is an RGB image;
determining a first image according to the key frame, wherein the first image is a gray scale image;
and if the laser spots exist in the first image, determining that the pipeline leaks water.
2. The water leakage detection method based on image processing according to claim 1, wherein the color of the laser path is red; the determining a first image from the keyframe comprises:
combining the G channel and the B channel in the key frame to form a GB image;
and carrying out graying processing on the GB image to obtain a first image.
3. The method for detecting water leakage based on image processing according to claim 2, wherein the determining that the pipe leaks water if it is determined that the laser spot exists in the first image comprises:
carrying out image enhancement processing on the first image to obtain a second image;
performing threshold segmentation processing on the second image to determine whether a highlight area exists in the second image;
and if the second image has a highlight area, taking the highlight area as a laser spot, and determining that the pipeline leaks water.
4. The method for detecting water leakage based on image processing as claimed in claim 3, wherein said method further comprises:
if the second image has the highlight areas, determining the minimum circumscribed rectangle of all the highlight areas;
and marking the minimum bounding rectangles of all the highlight areas and displaying the minimum bounding rectangles on the key frame.
5. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the water leakage detection method based on image processing according to any one of claims 1 to 4.
6. A water leak detection system based on image processing, the system comprising:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor may implement the water leakage detection method based on image processing according to any one of claims 1 to 4.
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