An interactive road sign system

Abstract

The present invention relates to the field of image data processing technology, and in particular to an interactive road sign system, which includes: a data acquisition module, a determination module, an adjustment module, an adjustment module, a judgment module, a drawing module, and a correction module. The present invention can effectively respond to various environmental changes through real-time monitoring and dynamic adjustment, ensuring that road sign information is always clearly visible under different weather, visibility, and driving conditions. The system automatically adjusts the display contrast and clarity of the road sign by comprehensively considering water mist, particle diameter, facial clarity, and real-time position, ensuring that the target can accurately receive road sign information in bad weather such as haze and rain or when visibility is limited. The system also analyzes the relationship between the road sign display effect and visibility by drawing a change curve, further optimizes the display settings, and effectively solves the problem of unstable display effect of the system in complex environments due to strong dependence on light sources.

Description

Technical Field

[0001] The present invention relates to the technical field of image data processing, and in particular to an interactive road sign system. Background Art

[0002] As the complexity of urban environments increases, pedestrians need to rely on road sign systems to provide accurate guidance in their daily travel. However, conventional road sign systems often have difficulty maintaining sufficient clarity and visibility in adverse weather conditions, such as light haze, drizzle, or low light. These adverse weather conditions may affect the recognition of road signs and increase the risk of pedestrians getting lost or misjudging their routes. Therefore, there is an urgent need for an interactive road sign system that can automatically adjust the display content according to weather and environmental changes to improve visibility and pedestrian travel safety in different weather conditions.

[0003] Patent document with patent publication number CN101034515A discloses a modular system for luminous signs, especially road signs, which includes a support structure and a plurality of modules, usually in the form of letters, graphics or symbols, which can be positioned on the support structure. Each module is composed of a main body and has at least one LED light source arranged in the main body and at least one pair of terminals for electrically connecting the LED light source to a power source. The main body is made of a substantially transparent material that can be used as a light conductor.

[0004] It can be seen that the display effect of the system is highly dependent on the brightness and stability of the LED light source. Therefore, under long-term use or in harsh environments such as high temperature and humidity, the degradation or unstable performance of the LED light source will lead to a decrease in the display effect; since the system uses multiple LED light sources and each module has an independent light source, the energy consumption of the overall system is relatively high, especially in scenarios that require long-term continuous operation or large-area coverage, resulting in uneconomical electricity consumption. Summary of the invention

[0005] To this end, the present invention provides an interactive road sign system for automatically adjusting the display contrast and clarity of the road sign by comprehensively considering water mist, particle diameter, facial clarity and real-time position, so as to overcome the problem in the prior art that the system has unstable display effect in complex environments due to its strong dependence on light sources.

[0006] To achieve the above object, the present invention provides an interactive road sign system, comprising:

[0007] A data acquisition module is used to collect the real-time area and real-time average particle diameter of water mist on the surface of the camera shield on the interactive road sign, and the real-time facial clarity and real-time position of the target in the monitoring area;

[0008] The interactive road sign displays road sign information with a preset contrast and a preset display clarity;

[0009] a determination module connected to the data acquisition module, for determining regional visibility according to the real-time area and the real-time average particle diameter;

[0010] an adjustment module, connected to the determination module, for adjusting the preset contrast according to the visibility of the area to form a temporary contrast;

[0011] an adjustment module, which is connected to the data acquisition module and the adjustment module respectively, and is used to adjust the temporary contrast according to the real-time facial definition to form an adjusted contrast;

[0012] A determination module, connected to the data acquisition module, for determining whether the preset display clarity needs to be corrected according to the real-time position and the preset standard distance, and forming a determination result;

[0013] a drawing module, which is connected to the data acquisition module, the determination module and the judgment module respectively, and is used to draw a picture change curve according to the judgment result, the real-time facial clarity and the real-time position, and to draw a visibility change curve according to the judgment result, the real-time position and the regional visibility;

[0014] A correction module is connected to the drawing module and is used to correct the preset display clarity according to the picture change curve and the visibility change curve to form an adjusted display clarity.

[0015] Furthermore, the determination module includes:

[0016] An area deviation calculation unit, used to calculate the relative deviation between the real-time area and a preset standard area to form an area deviation;

[0017] A diameter fluctuation calculation unit, used to calculate the standard deviation of the real-time average particle diameter to form a diameter fluctuation value;

[0018] a fluctuation deviation calculation unit, connected to the diameter fluctuation calculation unit, for calculating the diameter fluctuation deviation according to the diameter fluctuation value;

[0019] A weighted calculation unit is connected to the area deviation calculation unit and the fluctuation deviation calculation unit respectively, and is used to perform weighted summation according to a preset area weight, a preset diameter weight, the area deviation and the diameter fluctuation deviation to form regional visibility.

[0020] Furthermore, the fluctuation deviation calculation unit includes:

[0021] A fluctuation comparison subunit, used to compare the diameter fluctuation value with a preset diameter fluctuation threshold value to form a fluctuation comparison result;

[0022] The fluctuation deviation calculation subunit is connected to the fluctuation comparison subunit and is used to calculate the relative deviation between the diameter fluctuation value and the preset diameter fluctuation threshold value to form the diameter fluctuation deviation when the fluctuation comparison result shows that the diameter fluctuation value is greater than the preset diameter fluctuation threshold value.

[0023] Furthermore, the adjustment module includes:

[0024] A visibility comparison unit, used to compare the visibility of the area with a preset standard visibility to form a visibility comparison result;

[0025] An adjustment unit is connected to the visibility contrast and is used to adjust the preset contrast according to a preset adjustment coefficient and a relative deviation between the regional visibility and the preset standard visibility to form a temporary contrast when the visibility comparison result shows that the regional visibility is less than the preset standard visibility.

[0026] Furthermore, the adjustment module includes:

[0027] A facial clarity comparison unit, used to compare the real-time facial clarity with a preset standard clarity to form a facial clarity comparison result;

[0028] An adjustment unit is connected to the facial clarity contrast unit and is used to adjust the temporary contrast according to a relative deviation between the real-time facial clarity and the preset standard clarity and a preset adjustment coefficient to form an adjusted contrast when the real-time facial clarity contrast result shows that the facial clarity is less than the preset standard clarity.

[0029] Furthermore, the determination module includes:

[0030] A position calculation unit, used to calculate the distance between the real-time position and the road sign to form a first distance;

[0031] a position comparison unit connected to the position calculation unit and configured to compare the first distance with the preset standard distance to form a position comparison result;

[0032] a recording unit connected to the position comparison unit, and configured to record a duration of the position comparison result when the position comparison result indicates that the first distance is smaller than the preset standard distance;

[0033] A determination unit is connected to the recording unit and is used to determine whether the preset display clarity needs to be corrected according to a comparison result between the duration and a preset standard duration, so as to form a determination result.

[0034] Furthermore, the drawing module includes:

[0035] A picture curve drawing unit, used for drawing a curve of the real-time facial definition based on the real-time position change to form a picture change curve when the determination result is that the duration is greater than a preset standard duration;

[0036] The visibility curve drawing unit is used to draw a curve of the regional visibility based on the real-time position change to form a visibility change curve when the determination result is that the duration is greater than a preset standard duration.

[0037] Furthermore, the correction module includes:

[0038] A consistency calculation unit, used for calculating the Pearson correlation coefficient of the picture change curve and the visibility change curve to form a change consistency;

[0039] The correction unit is used to correct the preset display clarity according to the change consistency to form an adjusted display clarity.

[0040] Furthermore, the correction unit comprises:

[0041] A consistency comparison subunit, used to compare the change consistency with a preset standard consistency to form a consistency comparison result;

[0042] A correction subunit is connected to the consistency comparison subunit and is used to correct the preset display clarity according to the relative deviation between the change consistency and the preset standard consistency and a preset correction coefficient when the consistency comparison result is that the change consistency is less than the preset standard consistency, so as to form an adjusted display clarity.

[0043] Furthermore, the correction unit further includes:

[0044] An adjustment fluctuation calculation subunit, connected to the correction subunit, for calculating the standard deviation of all the adjusted display definition quantities within a preset fluctuation adjustment time length to form an adjustment fluctuation value;

[0045] The standard adjustment subunit is connected to the adjustment fluctuation calculation subunit and is used to adjust the preset standard consistency according to the relative deviation between the adjustment fluctuation value and the preset standard adjustment fluctuation value and the preset standard adjustment coefficient when the adjustment fluctuation value is greater than the preset standard adjustment fluctuation value.

[0046] Compared with the prior art, the beneficial effect of the present invention is that, through real-time monitoring and dynamic adjustment, it can effectively respond to various environmental changes and ensure that road sign information is always clearly visible under different weather, visibility and driving conditions. The system automatically adjusts the display contrast and clarity of road signs by comprehensively considering water mist, particle diameter, facial clarity and real-time position, ensuring that the target can accurately receive road sign information in bad weather such as haze and rain or when visibility is limited. The system also analyzes the relationship between road sign display effect and visibility by drawing change curves, and further optimizes the display settings. In addition, the real-time correction function effectively reduces the potential risks caused by changes in visibility, enhances the intelligence, adaptability and reliability of the system, and effectively solves the problem of unstable display effect of the system in complex environments due to strong dependence on light sources.

[0047] Furthermore, through multiple calculation steps, the water mist situation around the interactive road signs can be accurately evaluated, and the dynamics of the water mist coverage and particle changes in the environment can be accurately captured, and real-time feedback can be given to the interactive road sign system to ensure automatic adjustment of display clarity and contrast, thereby improving the system's visibility and user experience under complex weather conditions, and ensuring accurate communication of road information.

[0048] Furthermore, through the calculation of fluctuation deviation, the system can monitor and adjust the clarity of road sign display in real time, especially in cases where the water mist particles are large or the fluctuations are large, to ensure the accuracy of the displayed information.

[0049] Furthermore, by dynamically adjusting the preset contrast, the system can adaptively adjust the display effect of road signs according to changes in real-time visibility, ensuring that road sign information is still clearly visible even in environmental conditions with low visibility. This can effectively improve the adaptability and robustness of the system, improve user experience, and enhance road safety, especially in low visibility conditions such as haze, rain and snow, to ensure the accuracy of information communication.

[0050] Furthermore, by adjusting the contrast in real time, it is ensured that the displayed information of the road sign always maintains high readability and accuracy under different lighting and environmental conditions, thereby improving the efficiency of information communication.

[0051] Furthermore, based on the position changes monitored in real time, it is determined whether the display clarity of the road sign needs to be adjusted. By comparing the difference and duration between the first distance and the preset standard distance, it is ensured that the display clarity is corrected in specific circumstances, thereby further improving the display effect of the interactive road sign and the effectiveness of information communication, especially when the target distance is too close, to avoid the display being too blurred or inaccurate, which helps to improve road safety and information recognition accuracy.

[0052] Furthermore, by drawing picture change curves and visibility change curves, the system can intuitively reflect the changing trends of road sign display clarity and regional visibility, thereby improving the effectiveness and readability of road sign information transmission.

[0053] Furthermore, by introducing the calculation of change consistency, the system can comprehensively evaluate the correlation between picture clarity and visibility to ensure the rationality and accuracy of the display effect in practical applications. The adjusted display clarity can effectively respond to different environmental changes and optimize the quality of information display.

[0054] Furthermore, by comparing the consistency of the change with the preset standard consistency, the system can accurately determine whether the display effect meets the expected clarity standard. When the consistency is detected to be low, the system automatically makes corresponding corrections and adjusts the display clarity to improve the accuracy of information transmission, which can enhance the adaptive ability of road sign display and maintain a clear and easy-to-identify display effect in a changing environment.

[0055] Furthermore, by real-time monitoring of the fluctuation of display clarity adjustment, the instability caused by environmental changes can be effectively dealt with, ensuring that the adjustment of display clarity is more accurate and stable. When the fluctuation of display clarity adjustment exceeds the preset range, the correction unit can adjust the consistency standard in time to maintain the display effect of the system within an acceptable range, thereby improving the system's adaptability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a schematic diagram of the interactive road sign system of this embodiment;

[0057] Figure 2 is a schematic diagram of an interactive road sign of this embodiment;

[0058] Figure 3 This is a decision logic diagram for calculating the diameter fluctuation deviation by the fluctuation deviation calculation subunit of this embodiment;

[0059] Figure 4 This is a decision logic diagram for adjusting the preset contrast by the adjustment unit in this embodiment. DETAILED DESCRIPTION

[0060] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0061] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0062] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0063] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] See also Figure 1 As shown, it is a schematic diagram of the interactive road sign system of this embodiment;

[0065] Please continue reading Figure 2 As shown, it is a schematic diagram of the interactive road sign of this embodiment;

[0066] This embodiment provides an interactive road sign system, including:

[0067] A data acquisition module, used to collect the real-time area and real-time average particle diameter of the water mist on the surface of the camera protective cover 1 on the interactive road sign, the real-time facial clarity and real-time position of the target in the monitoring area through the camera, and display the road sign information on the interactive road sign through the display board 2 with a preset contrast and preset display clarity;

[0068] a determination module connected to the data acquisition module, for determining regional visibility according to the real-time area and the real-time average particle diameter;

[0069] an adjustment module, connected to the determination module, for adjusting the preset contrast according to the visibility of the area to form a temporary contrast;

[0070] an adjustment module, which is connected to the data acquisition module and the adjustment module respectively, and is used to adjust the temporary contrast according to the real-time facial definition to form an adjusted contrast;

[0071] A determination module, connected to the data acquisition module, for determining whether the preset display clarity needs to be corrected according to the real-time position and the preset standard distance, and forming a determination result;

[0072] a drawing module, which is connected to the data acquisition module, the determination module and the judgment module respectively, and is used to draw a picture change curve according to the judgment result, the real-time facial clarity and the real-time position, and to draw a visibility change curve according to the judgment result, the real-time position and the regional visibility;

[0073] A correction module is connected to the drawing module and is used to correct the preset display clarity according to the picture change curve and the visibility change curve to form an adjusted display clarity.

[0074] Real-time facial clarity refers to the clarity level evaluated based on the quality of the facial image captured by the camera in the interactive road sign system, which usually depends on factors such as the resolution of the image, lighting conditions, camera focus, and image noise. The method for obtaining real-time facial clarity is generally to analyze the facial image of the target captured by the camera through an image processing algorithm, calculate the details and contrast of the face, and usually evaluate whether it meets the set clarity standard through facial recognition or image clarity algorithm. In this embodiment, the acquisition of real-time facial clarity is to analyze the image quality of the facial image captured by the camera. First, the image captured by the camera is then calculated through image processing algorithms (such as image contrast analysis, blur detection or facial recognition technology) to calculate the clarity of the image. These algorithms evaluate the resolution, noise level, contrast, and clarity of facial features of the image to determine the value of real-time facial clarity.

[0075] The preset contrast is the initial display contrast setting, which is usually set based on the ambient lighting conditions of the road sign, the characteristics of the display device, and visual requirements, and is usually between 50% and 100%. In this embodiment, the preset contrast is set to 70%, which can balance brightness and readability in most common environments, ensure clear display effects, and avoid visual discomfort caused by excessive contrast.

[0076] The preset display definition refers to the initial image or text display accuracy, which depends on the resolution of the display device, the viewing distance and the environmental conditions, and is usually set between 720p and 1080p. In this embodiment, the preset display definition is set to 1080p to ensure that most targets can clearly see the road sign information in common usage scenarios, while avoiding unnecessary computing pressure caused by too high a resolution.

[0077] The preset standard distance refers to the ideal viewing distance set for the road sign, which is usually set according to the installation location of the road sign, the display size and the viewing distance requirements of the audience, and is generally between 1 and 3 meters. In this embodiment, the preset standard distance is set to 2 meters, which is suitable for most urban roads or public places, and can ensure the clear display of road sign information and meet the viewing requirements of most targets.

[0078] The data acquisition module obtains information such as water mist area, particle diameter, facial clarity and target position in real time. The determination module calculates the regional visibility based on the water mist area and particle diameter, and the adjustment module adjusts the display contrast of the road sign based on the visibility to form a temporary contrast. The adjustment module further optimizes the contrast based on the real-time facial clarity to form an adjusted contrast. The judgment module decides whether to correct the preset display clarity based on the distance between the target position and the road sign. The drawing module reflects the changing relationship between the road sign display and visibility through the picture change curve and the visibility change curve. The correction module adjusts the display clarity of the road sign based on the analysis results of these curves to ensure the clear presentation of the road sign information.

[0079] Through real-time monitoring and dynamic adjustment, it can effectively respond to various environmental changes and ensure that road sign information is always clearly visible in different weather, visibility and driving conditions. The system automatically adjusts the display contrast and clarity of road signs by comprehensively considering water mist, particle diameter, facial clarity and real-time position, ensuring that the target can accurately receive road sign information in bad weather such as haze and rain or when visibility is limited. The system also analyzes the relationship between road sign display effect and visibility by drawing change curves, and further optimizes display settings. In addition, the real-time correction function effectively reduces the potential risks caused by changes in visibility, enhances the intelligence, adaptability and reliability of the system, and effectively solves the problem of unstable display effect of the system in complex environments due to strong dependence on light sources.

[0080] Specifically, the determination module includes:

[0081] An area deviation calculation unit, used to calculate the relative deviation between the real-time area and a preset standard area to form an area deviation;

[0082] A diameter fluctuation calculation unit, used to calculate the standard deviation of the real-time average particle diameter to form a diameter fluctuation value;

[0083] a fluctuation deviation calculation unit, connected to the diameter fluctuation calculation unit, for calculating the diameter fluctuation deviation according to the diameter fluctuation value;

[0084] A weighted calculation unit is connected to the area deviation calculation unit and the fluctuation deviation calculation unit respectively, and is used to perform weighted summation according to a preset area weight, a preset diameter weight, the area deviation and the diameter fluctuation deviation to form regional visibility.

[0085] The preset standard area refers to the water mist coverage area on the surface of the camera shield used as a reference, which depends on the actual size of the shield and the distribution of the water mist on the surface. It is usually set between tens of square centimeters and hundreds of square centimeters. In this embodiment, it is set to 0.2 square meters, which can effectively cover the actual water mist area of ​​a general shield and ensure the judgment accuracy under different environmental conditions. By reasonably setting the preset standard area, the accuracy of the system in real-time visibility judgment can be improved, avoiding errors caused by settings that are too large or too small, thereby optimizing the adjustment effect of display clarity.

[0086] The preset area weight refers to the degree of influence of the water fog area on the final visibility result when calculating regional visibility, which depends on the importance of the area in the actual visibility impact. It is generally set between 0.3 and 0.5, and is set to 0.4 in this embodiment. It can ensure that the area deviation occupies an appropriate proportion in the visibility calculation, avoiding the deviation caused by over-reliance on the area, and effectively reflecting the actual impact of the area on visibility.

[0087] The preset diameter weight refers to the degree of influence of the fluctuation of the diameter of water mist particles on the final visibility result when calculating regional visibility, which usually depends on the actual influence of the particle diameter on the clarity. The weight is usually set between 0.5 and 0.7, and is set to 0.6 in this embodiment to ensure that the change of particle diameter has sufficient weight on the visibility calculation, so as to accurately reflect the influence of particle fluctuation on the visibility of road signs and provide a more accurate basis for adjustment.

[0088] Regional visibility refers to the level of visibility in the monitoring area in the interactive road sign system, based on the coverage area of ​​the water mist on the surface of the camera shield and the fluctuation of the particle diameter. It can reflect the degree to which the road sign can clearly display information. The level of regional visibility directly affects the clarity of the road sign display content. The higher the visibility, the clearer the displayed information. Conversely, it may cause the display to be blurred or difficult to identify. Therefore, regional visibility plays a key role in adjusting the clarity and contrast of road sign display, which can improve road safety and the effectiveness of information communication.

[0089] First, the area deviation calculation unit quantifies the difference between the real-time water mist coverage area and the preset standard area, thereby reflecting the degree of expansion of the water mist; then, the diameter fluctuation calculation unit measures the fluctuation of the real-time particle diameter and evaluates the distribution of the water mist particles; then, the fluctuation deviation calculation unit calculates the diameter fluctuation deviation by comparing the particle diameter fluctuation value with the standard value, and further refines the change in water mist concentration; finally, the weighted calculation unit comprehensively calculates the area deviation and diameter fluctuation deviation according to the preset weights to obtain the visibility value of the area, thereby providing a basis for the system to adjust the display effect in real time.

[0090] Through multiple calculation steps, the water mist situation around the interactive road signs can be accurately evaluated. The dynamic changes of the water mist coverage and particle changes in the environment can be accurately captured, and real-time feedback can be given to the interactive road sign system to ensure automatic adjustment of display clarity and contrast, thereby improving the system's visibility and user experience under complex weather conditions and ensuring accurate communication of road information.

[0091] Please continue reading Figure 3 As shown, it is a decision logic diagram of the diameter fluctuation deviation calculated by the fluctuation deviation calculation subunit of this embodiment;

[0092] Specifically, the fluctuation deviation calculation unit includes:

[0093] A fluctuation comparison subunit, used to compare the diameter fluctuation value with a preset diameter fluctuation threshold value to form a fluctuation comparison result;

[0094] The fluctuation deviation calculation subunit is connected to the fluctuation comparison subunit and is used to calculate the relative deviation between the diameter fluctuation value and the preset diameter fluctuation threshold value to form the diameter fluctuation deviation when the fluctuation comparison result shows that the diameter fluctuation value is greater than the preset diameter fluctuation threshold value.

[0095] The preset diameter fluctuation threshold is a reference value for evaluating the fluctuation of particle diameter, which is usually set based on historical data, environmental standards and actual application conditions, and depends on the expected environmental conditions of the system design and the tolerance to the influence of water mist, and is usually set between 5% and 15%. In this embodiment, the preset diameter fluctuation threshold is set to 10%, which can reasonably judge the range of particle diameter variation under normal circumstances. At the same time, when the fluctuation exceeds this standard, the adjustment mechanism is activated in time to ensure the accuracy of display clarity and visibility, and prevent excessive fluctuations from affecting the communication of road sign information.

[0096] First, the fluctuation comparison subunit compares the real-time collected diameter fluctuation value with the preset diameter fluctuation threshold to form a fluctuation comparison result; secondly, when the diameter fluctuation value is greater than the preset standard value, the fluctuation deviation calculation subunit calculates the relative deviation based on the difference between the two to obtain the diameter fluctuation deviation. Through this process, the system can accurately determine the abnormality of particle diameter fluctuation, thereby further evaluating the degree of water mist influence.

[0097] By calculating the fluctuation deviation, the system can monitor and adjust the clarity of the road sign display in real time, especially in cases where the water mist particles are large or the fluctuations are large, to ensure the accuracy of the displayed information.

[0098] Please continue reading Figure 4 As shown, it is a decision logic diagram of the adjustment unit of this embodiment for adjusting the preset contrast;

[0099] Specifically, the adjustment module includes:

[0100] A visibility comparison unit, used to compare the visibility of the area with a preset standard visibility to form a visibility comparison result;

[0101] An adjustment unit is connected to the visibility contrast and is used to adjust the preset contrast according to a preset adjustment coefficient and a relative deviation between the regional visibility and the preset standard visibility when the visibility comparison result shows that the regional visibility is less than the preset standard visibility, so as to form a temporary contrast, and the temporary contrast is positively correlated with the relative deviation.

[0102] The preset standard visibility is a unitless rating value used to indicate the visibility of road sign information under standard environmental conditions. It depends on the environmental conditions and the system's requirements for ideal display effects. The rating range is generally set between 0 and 100, where 100 represents the best visibility and 0 represents complete invisibility. In this embodiment, the preset standard visibility is set to 70 to ensure that the road sign information is clearly visible in most cases, while maintaining the effectiveness of information transmission by adjusting the contrast and clarity under adverse weather conditions. This setting can not only ensure the stability of the system, but also adapt to different environmental changes, ensuring the clarity and effectiveness of the road sign display.

[0103] The preset adjustment coefficient is a parameter used to adjust the preset contrast, which depends on the degree of influence of visibility change on clarity and the system response speed. It is usually set between 0.1 and 1, and is set to 0.5 in this embodiment. It can provide appropriate contrast adjustment when visibility is poor, avoid excessive adjustment resulting in too strong or blurred display effects, and thus maintain the stability and accuracy of road sign information.

[0104] The adjustment module first compares the real-time measured regional visibility with the preset standard visibility to obtain the visibility comparison result. If the real-time regional visibility is lower than the preset standard visibility, the adjustment unit adjusts the preset contrast according to the relative deviation between the two and the preset adjustment coefficient to generate a temporary contrast, thereby optimizing the display effect of the road sign and ensuring that good visibility can be maintained in an undesirable environment.

[0105] By dynamically adjusting the preset contrast, the system can adaptively adjust the display effect of road signs according to changes in real-time visibility, ensuring that road sign information is still clearly visible even in environmental conditions with low visibility. It can effectively improve the adaptability and robustness of the system, improve user experience, and enhance road safety, especially in low visibility conditions such as haze, rain and snow, to ensure the accuracy of information communication.

[0106] Specifically, the adjustment module includes:

[0107] A facial clarity comparison unit, used to compare the real-time facial clarity with a preset standard clarity to form a facial clarity comparison result;

[0108] An adjustment unit is connected to the facial clarity contrast unit and is used to adjust the temporary contrast according to the relative deviation between the real-time facial clarity and the preset standard clarity and a preset adjustment coefficient to form an adjusted contrast when the real-time facial clarity contrast result shows that the facial clarity is less than the preset standard clarity, and the adjusted contrast is positively correlated with the relative deviation.

[0109] The preset adjustment coefficient is a constant value used to adjust the temporary contrast. It is usually set by the system designer according to the actual environment and application requirements. It depends on the sensitivity requirements of the road sign display system for clarity adjustment and the amplitude of contrast changes under different environmental conditions. It is usually set between 0.1 and 1.0. In this embodiment, the preset adjustment coefficient is set to 0.5, which can balance the display clarity and system stability without causing excessive adjustment, ensuring that information can be effectively conveyed in different monitoring environments.

[0110] The adjustment module compares the real-time facial clarity with the preset standard clarity through the facial clarity comparison unit to generate a facial clarity comparison result. When the real-time facial clarity is lower than the preset standard clarity, the adjustment unit dynamically adjusts the temporary contrast according to the relative deviation between the two and the preset adjustment coefficient, thereby improving the display effect and ensuring that the information is clearer and easier to read.

[0111] By adjusting the contrast in real time, the displayed information of road signs can always maintain high readability and accuracy under different lighting and environmental conditions, thereby improving the efficiency of information communication.

[0112] Specifically, the determination module includes:

[0113] A position calculation unit, used to calculate the distance between the real-time position and the road sign to form a first distance;

[0114] a position comparison unit connected to the position calculation unit and configured to compare the first distance with the preset standard distance to form a position comparison result;

[0115] a recording unit connected to the position comparison unit, and configured to record a duration of the position comparison result when the position comparison result indicates that the first distance is smaller than the preset standard distance;

[0116] A determination unit is connected to the recording unit, and is used to determine that the preset display clarity needs to be corrected when the duration is greater than the preset standard duration, and to determine that the preset display clarity does not need to be corrected when the duration is less than or equal to the preset standard duration, thereby forming a determination result.

[0117] The preset standard duration refers to the time threshold used in the judgment module to judge the change in the distance between the real-time position and the road sign. It is a standard duration based on system design requirements and actual application scenarios, depending on the system's requirements for response speed. It is usually set between a few seconds and tens of seconds to balance the sensitivity and stability of the system. In this embodiment, it is set to 10 seconds, which can effectively avoid frequent adjustments caused by short-term distance changes or environmental factors, while ensuring effective identification of long-term distance deviations. By appropriately setting the preset standard duration, unnecessary adjustments due to instantaneous changes can be avoided, thereby improving the stability of the system and user experience.

[0118] In the determination module, the position calculation unit first calculates the distance between the real-time position and the road sign to form a first distance. Then, the position comparison unit compares the first distance with the preset standard distance to obtain a position comparison result. If the distance between the real-time position and the road sign is less than the preset standard distance, the recording unit will record the duration of this result. Finally, the determination unit determines whether the preset display clarity needs to be corrected based on the comparison between the duration and the preset standard duration, thereby forming a determination result.

[0119] Based on the real-time monitored position changes, determine whether the display clarity of the road sign needs to be adjusted. By comparing the difference and duration between the first distance and the preset standard distance, ensure that the display clarity is corrected in specific circumstances, further improve the display effect of the interactive road sign and the effectiveness of information communication, especially when the target distance is too close, avoid the display being too blurred or inaccurate, which helps to improve road safety and information recognition accuracy.

[0120] Specifically, the drawing module includes:

[0121] A picture curve drawing unit, used for drawing a curve of the real-time facial definition based on the real-time position change to form a picture change curve when the determination result is that the duration is greater than a preset standard duration;

[0122] The visibility curve drawing unit is used to draw a curve of the regional visibility based on the real-time position change to form a visibility change curve when the determination result is that the duration is greater than a preset standard duration.

[0123] The drawing module includes a picture curve drawing unit and a visibility curve drawing unit. When the judgment result shows that the duration is longer than the preset standard duration, the picture curve drawing unit draws a picture change curve based on the relationship between the real-time facial clarity and the real-time position change; the visibility curve drawing unit draws a visibility change curve based on the relationship between the regional visibility and the real-time position change. These two units work together to convert real-time changing data into a visual curve, helping the system monitor and analyze the dynamic changes of the clarity and visibility of road signs as they change with position.

[0124] By drawing picture change curves and visibility change curves, the system can intuitively reflect the changing trends of road sign display clarity and regional visibility, thereby improving the effectiveness and readability of road sign information transmission.

[0125] Specifically, the correction module includes:

[0126] A consistency calculation unit, used for calculating the Pearson correlation coefficient of the picture change curve and the visibility change curve to form a change consistency;

[0127] The correction unit is used to correct the preset display clarity according to the change consistency to form an adjusted display clarity.

[0128] First, the consistency calculation unit calculates the Pearson correlation coefficient between the picture change curve and the visibility change curve to obtain the change consistency; then, the correction unit adjusts the preset display clarity according to the change consistency to form the adjusted display clarity. Through this process, the system can automatically adjust the display effect of the road sign after monitoring the change trend of display clarity and visibility in real time, ensuring more accurate information transmission.

[0129] By introducing the calculation of change consistency, the system can comprehensively evaluate the correlation between picture clarity and visibility to ensure the rationality and accuracy of the display effect in practical applications. The adjusted display clarity can effectively respond to changes in different environments and optimize the quality of information display.

[0130] Specifically, the correction unit includes:

[0131] A consistency comparison subunit, used to compare the change consistency with a preset standard consistency to form a consistency comparison result;

[0132] A correction subunit is connected to the consistency comparison subunit and is used to correct the preset display clarity according to the relative deviation between the change consistency and the preset standard consistency and a preset correction coefficient when the consistency comparison result is that the change consistency is less than the preset standard consistency, so as to form an adjusted display clarity.

[0133] The preset standard consistency refers to the standard value of consistency between the predetermined and ideal picture change curve and the visibility change curve in the interactive road sign system. It depends on the expected relationship between clarity and visibility when designing the road sign, as well as the information transmission requirements of the system under different environmental conditions. Usually, the value of the preset standard consistency is set between 0 and 1, 1 represents complete consistency, and 0 represents complete inconsistency. In this embodiment, the preset standard consistency is set to 0.85 to ensure that the display clarity and visibility of the road sign are highly consistent under the influence of different environmental factors, avoiding the failure of information transmission due to blurred display or poor visibility, and balancing the system's adaptability to changes in clarity and environmental factors without being overly sensitive or lax, thereby improving the reliability and safety of the road sign system in practical applications.

[0134] First, the consistency comparison subunit compares the change consistency with the preset standard consistency to obtain the consistency comparison result; then, the correction subunit calculates the relative deviation between the change consistency and the standard consistency based on the consistency comparison result, especially when the change consistency is less than the preset standard consistency, and adjusts the preset display clarity in combination with the preset correction coefficient, and finally forms the adjusted display clarity. This process ensures that the clarity of the road sign is optimized in a timely manner according to the consistency of the display effect.

[0135] By comparing the consistency of changes with the preset standard consistency, the system can accurately determine whether the display effect meets the expected clarity standard. When the consistency is detected to be low, the system automatically makes corresponding corrections and adjusts the display clarity to improve the accuracy of information transmission, which can enhance the adaptive ability of road sign display and maintain clear and easy-to-identify display effects in changing environments.

[0136] Specifically, the correction unit also includes:

[0137] An adjustment fluctuation calculation subunit, connected to the correction subunit, for calculating the standard deviation of all the adjusted display definition quantities within a preset fluctuation adjustment time length to form an adjustment fluctuation value;

[0138] The standard adjustment subunit is connected to the adjustment fluctuation calculation subunit and is used to adjust the preset standard consistency according to the relative deviation between the adjustment fluctuation value and the preset standard adjustment fluctuation value and the preset standard adjustment coefficient when the adjustment fluctuation value is greater than the preset standard adjustment fluctuation value.

[0139] The preset fluctuation adjustment duration refers to the length of the time window used to calculate the display clarity adjustment fluctuation during the adjustment process, which determines the calculation period of the clarity fluctuation, depends on the environmental conditions, the response speed of the device and the expected display stability, and is usually set between a few seconds and a few minutes. In this embodiment, it is set to 30 seconds, which can cover the common changes in the device response and avoid the misjudgment of frequent fluctuations caused by too short a duration.

[0140] The adjustment fluctuation calculation subunit calculates the quantitative standard deviation of all the adjusted display clarity within the preset fluctuation adjustment time to obtain the adjustment fluctuation value. Then, the standard adjustment subunit compares the adjustment fluctuation value with the preset standard adjustment fluctuation value. If the adjustment fluctuation value is greater than the preset standard value, the correction unit will adjust the preset standard consistency according to the relative deviation between the two and the preset standard adjustment coefficient, so as to ensure that the display clarity and consistency of the system meet the set standards.

[0141] By real-time monitoring of the fluctuations in display clarity adjustment, the instability caused by environmental changes can be effectively dealt with, ensuring that the adjustment of display clarity is more accurate and stable. When the fluctuations in display clarity adjustment exceed the preset range, the correction unit can make timely adjustments to the consistency standard to maintain the system's display effect within an acceptable range, thereby improving the system's adaptability and stability.

[0142] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0143] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An interactive road sign system, characterized in that: include: A data acquisition module is used to collect the real-time area and real-time average particle diameter of water mist on the surface of the camera shield on the interactive road sign, and the real-time facial clarity and real-time position of the target in the monitoring area; The interactive road sign displays road sign information with a preset contrast and a preset display clarity; a determination module connected to the data acquisition module, for determining regional visibility according to the real-time area and the real-time average particle diameter; an adjustment module, connected to the determination module, for adjusting the preset contrast according to the visibility of the area to form a temporary contrast; an adjustment module, which is connected to the data acquisition module and the adjustment module respectively, and is used to adjust the temporary contrast according to the real-time facial definition to form an adjusted contrast; A determination module, connected to the data acquisition module, for determining whether the preset display clarity needs to be corrected according to the real-time position and the preset standard distance, and forming a determination result; a drawing module, which is connected to the data acquisition module, the determination module and the judgment module respectively, and is used to draw a picture change curve according to the judgment result, the real-time facial clarity and the real-time position, and to draw a visibility change curve according to the judgment result, the real-time position and the regional visibility; A correction module is connected to the drawing module and is used to correct the preset display clarity according to the picture change curve and the visibility change curve to form an adjusted display clarity.

2. The interactive road sign system according to claim 1, characterized in that: The determination module comprises: An area deviation calculation unit, used to calculate the relative deviation between the real-time area and a preset standard area to form an area deviation; A diameter fluctuation calculation unit, used to calculate the standard deviation of the real-time average particle diameter to form a diameter fluctuation value; a fluctuation deviation calculation unit, connected to the diameter fluctuation calculation unit, for calculating the diameter fluctuation deviation according to the diameter fluctuation value; A weighted calculation unit is connected to the area deviation calculation unit and the fluctuation deviation calculation unit respectively, and is used to perform weighted summation according to a preset area weight, a preset diameter weight, the area deviation and the diameter fluctuation deviation to form regional visibility.

3. The interactive road sign system according to claim 2, characterized in that: The fluctuation deviation calculation unit comprises: A fluctuation comparison subunit, used to compare the diameter fluctuation value with a preset diameter fluctuation threshold value to form a fluctuation comparison result; The fluctuation deviation calculation subunit is connected to the fluctuation comparison subunit and is used to calculate the relative deviation between the diameter fluctuation value and the preset diameter fluctuation threshold value to form the diameter fluctuation deviation when the fluctuation comparison result shows that the diameter fluctuation value is greater than the preset diameter fluctuation threshold value.

4. The interactive road sign system according to claim 3, characterized in that: The adjustment module comprises: A visibility comparison unit, used to compare the visibility of the area with a preset standard visibility to form a visibility comparison result; An adjustment unit is connected to the visibility contrast and is used to adjust the preset contrast according to a preset adjustment coefficient and a relative deviation between the regional visibility and the preset standard visibility to form a temporary contrast when the visibility comparison result shows that the regional visibility is less than the preset standard visibility.

5. The interactive road sign system according to claim 4, characterized in that: The adjustment module comprises: A facial clarity comparison unit, used to compare the real-time facial clarity with a preset standard clarity to form a facial clarity comparison result; An adjustment unit is connected to the facial clarity contrast unit and is used to adjust the temporary contrast according to a relative deviation between the real-time facial clarity and the preset standard clarity and a preset adjustment coefficient to form an adjusted contrast when the facial clarity contrast result is that the facial clarity is less than the preset standard clarity.

6. The interactive road sign system according to claim 5, characterized in that: The determination module comprises: A position calculation unit, used to calculate the distance between the real-time position and the road sign to form a first distance; a position comparison unit connected to the position calculation unit and configured to compare the first distance with the preset standard distance to form a position comparison result; a recording unit connected to the position comparison unit, and configured to record a duration of the position comparison result when the position comparison result indicates that the first distance is smaller than the preset standard distance; A determination unit is connected to the recording unit and is used to determine whether the preset display clarity needs to be corrected according to a comparison result between the duration and a preset standard duration, so as to form a determination result.

7. The interactive road sign system according to claim 6, characterized in that: The drawing module comprises: A picture curve drawing unit, used for drawing a curve of the real-time facial definition based on the real-time position change to form a picture change curve when the determination result is that the duration is greater than a preset standard duration; The visibility curve drawing unit is used to draw a curve of the regional visibility based on the real-time position change to form a visibility change curve when the determination result is that the duration is greater than a preset standard duration.

8. The interactive road sign system according to claim 7, characterized in that: The correction module comprises: A consistency calculation unit, used for calculating the Pearson correlation coefficient of the picture change curve and the visibility change curve to form a change consistency; The correction unit is used to correct the preset display clarity according to the change consistency to form an adjusted display clarity.

9. The interactive road sign system according to claim 8, characterized in that: The correction unit comprises: A consistency comparison subunit, used to compare the change consistency with a preset standard consistency to form a consistency comparison result; A correction subunit is connected to the consistency comparison subunit and is used to correct the preset display clarity according to the relative deviation between the change consistency and the preset standard consistency and a preset correction coefficient when the consistency comparison result is that the change consistency is less than the preset standard consistency, so as to form an adjusted display clarity.

10. The interactive road sign system according to claim 9, characterized in that: The correction unit also includes: An adjustment fluctuation calculation subunit, connected to the correction subunit, for calculating the standard deviation of all the adjusted display definition quantities within a preset fluctuation adjustment time length to form an adjustment fluctuation value; The standard adjustment subunit is connected to the adjustment fluctuation calculation subunit and is used to adjust the preset standard consistency according to the relative deviation between the adjustment fluctuation value and the preset standard adjustment fluctuation value and the preset standard adjustment coefficient when the adjustment fluctuation value is greater than the preset standard adjustment fluctuation value.

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