Method for detecting mixing amount of raining night beads on marking paint surface

Abstract

The invention relates to a method for detecting the mixing amount of raining night beads on a marking paint surface. According to the method, the light reflecting effect of the rain night beads in a wet state is better than that of common glass beads, so that the brightness presented in an image is higher, the mixing amount of the rain night beads can be effectively determined by measuring the area proportion of the rain night beads in the marked line, and the method has scientificity and feasibility. According to the method, image-pro plus image processing software is used for recognizing the proportion of the rain night beads in the marked line, an accurate data result can be directly generated, and the method is scientific, reliable and easy and convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of road traffic markings, and specifically relates to a detection method for the content of rain night beads sprinkled on the surface of marking paint. Background Art

[0002] As a traffic infrastructure for visual guidance and traffic induction, road traffic markings play a very important role in giving full play to the road function and preventing and reducing traffic accidents. Generally, road traffic markings use the method of surface sprinkling and premixing glass beads to achieve night visibility. However, in rainy days, water will cover the surface of the glass beads, affecting their reflective effect. Therefore, when applying markings, some rain night beads with a high refractive index are generally incorporated into the surface-sprinkled glass beads, which can improve the retroreflective performance of road traffic markings in rainy nights.

[0003] The content of rain night beads directly affects the reflective effect of road traffic markings in rainy nights and needs to meet the design requirements. However, it is inevitable that some manufacturers or construction units will cut corners and pass off inferior goods as good ones. At present, there is no method on the market to test the content of rain night beads sprinkled on the surface of the applied marking paint. Therefore, it is particularly important to propose a detection method for the content of rain night beads sprinkled on the surface of marking paint, which can test whether the content of rain night beads meets the requirements, ensure the retroreflective performance of the markings in rainy nights, and improve the safety of road users. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the present invention provides a detection method for the content of rain night beads sprinkled on the surface of marking paint, including the following steps:

[0005] Step 1, select the road traffic marking to be tested as the detection object and randomly select an area for marking;

[0006] Step 2, imitate the rainy night environment, use a water spraying device to simulate rain falling, and at the same time use a lighting tool to simulate the headlight irradiation, and irradiate the marked area directly with a lighting device;

[0007] Step 3, take a photo of the marked area directly with a photographing device;

[0008] Step 4, use image-pro plus image processing software to process and analyze the photo of the marked area, and calculate the proportion of rain night beads in the photo.

[0009] On the basis of the above solution, step 4 includes the following steps:

[0010] Step 41, use image-pro plus image processing software to open the photo of the marked area taken, and no other parts should appear in the photo except the marked area;

[0011] Step 42: Use the Count / Size function to set parameters before measurement;

[0012] Step 43: Use the Count / Size function to select all raindrop beads in the measurement area and calculate;

[0013] Step 44: Export data.

[0014] Based on the above solution, the specific method in Step 42 is as follows:

[0015] Use the Count / Size function to set parameters before measurement, including the following steps:

[0016] Click Count / Size, Measure, and Select Measurements in sequence. Set parameters in the pop-up interface. First, select Area and Pre Area, which represent calculating the area of the selected part and the proportion of the area of the selected part to the total area of the picture respectively. Secondly, set the Start-End interval. The interval of Area is set to 10 - 10000000, and the interval of Pre Area is set to 0 - 1. Other settings are default;

[0017] Click Count / Size and Options in sequence. Set parameters in the pop-up interface. Outline Style is set to Filled, Label Style is set to None, and other settings are default;

[0018] Click File and Save Settings in sequence to save the above settings as a measurement environment file for convenient repeated use later.

[0019] Based on the above solution, the specific method in Step 43 is as follows: Click Count / Size and SelectColors in sequence. Select the measurement area in the pop-up interface. Select the Histogram Based mode and drag the corresponding contrast intervals of H, S, and I respectively to adjust the selection area to select all raindrop beads; click Count to complete the calculation.

[0020] Based on the above solution, the specific method in Step 44 is as follows: Click Count / Size, View, and Measurement Date in sequence and paste the results into an Excel spreadsheet. Per Area(Obj / Total) represents the proportion of the selected area to the picture, that is, the proportion of raindrop beads to all glass beads on the photographed picture.

[0021] Based on the above solution, the specific method for step 1 is as follows: Along the length direction of the marking line of the test object, randomly select a 200 m length range at both ends and the middle of the marking line, and select one point at both ends and the middle of this range, for a total of 3 points. Then, extend 0.25 m to both sides with each point as the center to form a rectangle with a length of 0.5 m and a width equal to the width of the marking line, and frame and mark the area. Each marking line has a total of 9 marked areas.

[0022] Based on the above solution, during the shooting in step 3, the marked area should be clearly and completely displayed without the appearance of an aperture.

[0023] The beneficial effects of the present invention are as follows:

[0024] The present invention utilizes the fact that the reflective effect of rain night beads in the wet state is better than that of ordinary glass beads, so the brightness presented in the image is also higher. By measuring the area ratio of rain night beads in the marking line, the dosage can be effectively determined, and this method is scientific and feasible.

[0025] The method of the present invention uses image-pro plus image processing software to identify the proportion of rain night beads in the marking line, and can directly generate accurate data results, which is both scientific and reliable and easy to operate. Description of the Drawings

[0026] Figure 1 Schematic diagram of the parameter settings in step 42 of Example 1;

[0027] Figure 2 Schematic diagram of selecting the measurement area and calculating in step 43 of Example 1;

[0028] Figure 3 Schematic diagram of exporting data in step 44 of Example 1. Detailed Embodiments

[0029] The terms used in the present invention generally have the meanings commonly understood by those of ordinary skill in the art unless otherwise specified.

[0030] The following combines specific embodiments and further describes the present invention in detail with reference to the data. The following embodiments are only for illustrating the present invention and do not limit the scope of the present invention in any way.

[0031] Example 1

[0032] The present application provides a method for detecting the dosage of surface-sprinkled rain night beads in a marking paint, and the specific steps include:

[0033] Step 1: Select the road traffic markings to be tested as the detection object. Along the length direction of the markings, randomly select a 200m length range at both ends and the middle of the markings, and select one point at both ends and the middle of this range, a total of 3 points. Then extend 0.25m to both sides centered on each point to form a rectangle with a length of 0.5m and a width equal to the width of the markings. Frame out this rectangular area and make marks. There are a total of 9 marked areas for each marking.

[0034] Step 2: Imitate the rainy night environment and conduct the test at night. Use a water spraying device to simulate rain falling, and at the same time use lighting tools to simulate the headlight irradiation. Use a flashlight or other lighting device to irradiate the marked area directly, and place the lighting tool 0.5m - 1m above the markings.

[0035] Step 3: Use a mobile phone, camera or other shooting device to take pictures of the marked area directly. Set the distance between the shooting device and the markings to be tested to 0.5m - 1m. Fix the device with a bracket to ensure that the distance between the shooting device and the markings to be tested is the same each time, and it can clearly and completely display the marked area without the appearance of lighting apertures.

[0036] Step 4: Use image-pro plus image processing software to process and analyze the photos of the marked area, calculate the proportion of rainy night beads in each photo, and take the average value of the proportions of each marked area:

[0037] Step 41: Use image-pro plus image processing software to open the photos of the marked area. No other parts should appear in the photos except the marked area.

[0038] Step 42: Use the Count / Size function to set the parameters before measurement, including the following steps:

[0039] Click Count / Size, Measure, and Select Measurements in sequence, and set the parameters in the pop-up interface. First, select Area and Pre Area, which represent calculating the area of the selected part and the proportion of the area of the selected part in the total area of the picture respectively. Secondly, set the Start-End interval. The interval of Area is set to 10 - 10000000, and the interval of Pre Area is set to 0 - 1. Other settings are default.

[0040] Click Count / Size, Options in sequence, and set the parameters in the pop-up interface. Set Outline Style to Filled and Label Style to None. Other settings are default.

[0041] Click File and Save Settings in sequence to save the above settings as a measurement environment file for convenient reuse multiple times later.

[0042] Step 43: Use the Count / Size function to select the measurement area and calculate, including the following steps:

[0043] Click Count / Size and Select Colors in sequence, and select the measurement area in the pop-up interface. Select the Histogram Based mode, and drag the contrast intervals corresponding to H, S, and I respectively to adjust the selected area to select all the rain-night beads. Click Count to complete the calculation.

[0044] Step 44: Export data, including the following steps:

[0045] Click Count / Size, View, and Measurement Date in sequence, and paste the results into an Excel spreadsheet. Per Area (Obj / Total) represents the proportion of the selected area in the picture, that is, the proportion of rain-night beads in all glass beads on the photographed picture.

[0046] Step 45: Calculate the average value of the proportion of rain-night beads in all glass beads in the 9 marked areas.

[0047] Example 2

[0048] Use the method in Example 1 of the present invention to test the test section markings applied with the self-made marking paint. The dosage of rain-night beads in the test section markings applied with the self-made marking paint is 35%. The test results are as follows:

[0049] Table 1 Test Results of the Dosage of Rain-Night Beads in Markings

[0050]

[0051] The average value of the dosage of rain-night beads obtained by using the detection method of the present invention is 35.28%, and its error range is less than 1%. This shows that the detection method has high accuracy and reliability.

[0052] The above are only the preferred embodiments of the present invention, and are not limitations to the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A detection method for the dosage of rain beads scattered on the surface of marking paint, characterized in that, It includes the following steps: Step 1: Select the road traffic markings to be tested as the detection object, and randomly select multiple areas for marking; Step 2: Imitate the rainy night environment, use a water spraying device to simulate rain falling, and at the same time use a lighting tool to simulate the headlight irradiation, and irradiate the marked area directly with the lighting device; Step 3: Use a photographing device to take pictures of the marked area directly; Step 4: Use the image-pro plus image processing software to process and analyze the photos of the marked area, and calculate the proportion of rainy night beads in the photos.

2. The detection method for the content of rain-night beads sprinkled on the surface of the marking paint according to claim 1, characterized in that, Step 4 includes the following steps: Step 41: Use the image-pro plus image processing software to open the photo of the marked area, and no other parts should appear except the marked area in the photo; Step 42: Use the Count / Size function to set the parameters before measurement; Step 43: Use the Count / Size function to select all the rainy night bead particles in the measurement area and calculate; Step 44: Export the data.

3. The detection method for the content of rain beads sprinkled on the surface of the marking paint according to claim 2, characterized in that, The specific method in Step 42 is: Use the Count / Size function to set the parameters before measurement, including the following steps: Click Count / Size, Measure, and Select Measurements in sequence, and set the parameters in the pop-up interface; First, select Area and Pre Area, which represent calculating the area of the selected part and the proportion of the area of the selected part in the total area of the picture respectively. Secondly, set the Start-End interval. The interval of Area is set to 10 - 10000000, and the interval of Pre Area is set to 0 - 1, and other settings are default; Click Count / Size and Options in sequence, and set the parameters in the pop-up interface; Outline Style is set to Filled, Label Style is set to None, and other settings are default; Click File and Save Settings in sequence, and save the above settings as a measurement environment file.

4. The detection method for the content of rain-night beads sprinkled on the surface of the marking paint according to claim 2, wherein, The specific method in Step 43 is: Click Count / Size and Select Colors in sequence, and select the measurement area in the pop-up interface; Select the Histogram Based mode, and drag the corresponding contrast intervals of H, S, and I respectively to adjust the selection area to select all the rainy night bead particles; Click Count to complete the calculation.

5. The detection method of the content of rain-night beads sprinkled on the surface of the marking paint according to claim 2, characterized in that, The specific method in Step 44 is: Click Count / Size, View, and Measurement Date in sequence, and paste the result into an Excel table. Per Area(Obj / Total) represents the proportion of the selected area in the picture, that is, on the taken photo, the proportion of rainy night bead particles in all glass bead particles.

6. The detection method for the content of rain beads scattered on the surface of the marking paint according to claim 1, characterized in that, The specific method for Step 1 is as follows: Along the length direction of the marking line of the test object, randomly select a 200 m length range at both ends and the middle of the marking line, and select one point at both ends and the middle of this range, a total of 3 points are selected. Then, extend 0.25 m from each point to both sides to form a rectangle with a length of 0.5 m and a width equal to the width of the marking line. Frame out this rectangular area and make marks. There are a total of 9 marked areas for each marking line.

7. The detection method for the content of rain-night beads sprinkled on the surface of the marking paint according to claim 1, characterized in that, During the shooting in Step 3, the marked areas should be clearly and completely displayed, and no aperture should appear.

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