360-degree panoramic monitoring method and system for BIM (Building Information Modeling) construction

Abstract

The invention relates to the technical field of panoramic monitoring, in particular to a 360-degree panoramic monitoring method and system for BIM construction, and the method comprises the following steps: deploying a 360-degree panoramic camera in a water conservancy project construction area, adjusting the distance and angle of the camera according to the terrain and visual field requirements in combination with a BIM model, recognizing the image overlapping part of the camera, and obtaining a 360-degree panoramic monitoring result; and the field condition of the water conservancy project construction area is analyzed in real time, and full-coverage monitoring configuration is obtained. According to the method, the 360-degree panoramic camera is deployed, the camera configuration is adjusted according to terrain and view requirements in combination with the BIM model, the comprehensiveness and accuracy of monitoring are enhanced, the time stamps are distributed for the images, the shooting positions are tracked in real time, joints are reduced through optimization of the image splicing technology, and the BIM model is used for image rendering; and compared with a water conservancy project site, the deviation of the construction site is detected in real time, and the efficiency, accuracy and safety of project management are effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of panoramic monitoring technology, and in particular to a 360-degree panoramic monitoring method and system for BIM construction. Background Art

[0002] Panoramic surveillance technology involves the use of a camera system, including multiple cameras, to capture a 360-degree view of the environment. This technology is widely used in security monitoring, real-time event recording, and traffic and facility management. In industrial applications, panoramic surveillance can provide a continuous stream of visual data, which helps to supervise and analyze the working environment, ensure safety and improve efficiency. By covering a wider viewing angle, panoramic cameras reduce blind spots and improve the coverage and responsiveness of the monitoring system. Panoramic surveillance technology can also be integrated with motion detection and face recognition technology to enhance functionality and application range.

[0003] Among them, the 360-degree panoramic monitoring method in BIM construction refers to a method of using 360-degree panoramic monitoring technology in a building information model (BIM) environment to monitor the construction site. The main purpose is to improve the transparency and efficiency of construction project management, monitor the construction progress in real time through real-time video streaming, and ensure construction quality and safety. This monitoring method allows project managers and engineers to observe the construction site from multiple angles, assist in decision-making, optimize resource allocation, and promptly discover and solve problems in the construction process. 360-degree panoramic monitoring can also provide the project team with valuable visual records, which is helpful for project evaluation and future planning.

[0004] Existing panoramic monitoring technology has limitations in terms of real-time performance and image quality adjustment. Especially in large-scale infrastructure projects such as water conservancy project construction, traditional monitoring systems cannot effectively adapt to rapidly changing on-site conditions, such as lighting changes and challenges brought by long-distance data transmission. Technical limitations lead to poor image quality and unstable data transmission, affecting the timeliness and accuracy of decision-making. For example, in strong or low light conditions, images without optimized exposure cannot clearly display details, affecting the monitoring of project quality and the timely discovery of problems. The instability of data transmission leads to the loss of important monitoring information, increasing project risks and management costs. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a 360-degree panoramic monitoring method and system for BIM construction.

[0006] In order to achieve the above object, the present invention adopts the following technical solution, which is a 360-degree panoramic monitoring method for BIM construction, comprising the following steps:

[0007] S1: Deploy 360-degree panoramic cameras in the water conservancy project construction area, combine the BIM model, adjust the camera spacing and angle according to the terrain and field of view requirements, identify the overlapping parts of the camera images, analyze the on-site conditions of the water conservancy project construction area in real time, and obtain a full coverage monitoring configuration;

[0008] S2: according to the full coverage monitoring configuration, the image and video data are synchronized using the optical fiber network, the speed and stability of data transmission are checked, transmission errors are automatically detected and corrected, and a real-time image transmission link is obtained;

[0009] S3: Monitor the changes in the illumination intensity of the 360-degree panoramic view of the water conservancy project construction through the real-time image transmission link, adjust the image exposure and contrast through time series analysis and prediction of the illumination trend in the short term, and obtain the environmental image adjustment parameters;

[0010] S4: using the environment image adjustment parameters, assigning a timestamp and a location tag to the image, performing image stitching, eliminating seams by adjusting the edges of the image stitching, and optimizing the image color balance and uniform tone, to obtain a panoramic image output;

[0011] S5: Based on the panoramic image output, data encryption is performed, and the processed image and video data are stored by setting data access and modification permissions to obtain a secure data storage service;

[0012] S6: Using the secure data storage service, the 360-degree panoramic image data is designed and rendered using the BIM model, and the on-site deviation from the water conservancy project construction area is analyzed, the response speed of problem detection is adjusted, the construction progress and the identification ability of potential quality problems are optimized, and a panoramic evaluation log is obtained.

[0013] As a further solution of the present invention, the full coverage monitoring configuration includes the installation height, coverage angle and interval distance of the camera, the real-time image transmission link includes network delay data, transmission rate and error detection and correction mechanism, the environmental image adjustment parameters include automatic exposure adjustment value, contrast adjustment range and light tracking frequency, the panoramic image output includes image resolution, color correction and edge adjustment effects, the secure data storage service includes the encryption standard used, access control level and data backup frequency, and the panoramic assessment log includes the identification of the water conservancy project construction area, the progress update cycle and the frequency of quality abnormalities in the construction area.

[0014] As a further solution of the present invention, a 360-degree panoramic camera is deployed in the water conservancy project construction area, and the camera spacing and angle are adjusted according to the terrain and field of view requirements in combination with the BIM model, the overlapping parts of the camera images are identified, and the on-site conditions of the water conservancy project construction area are analyzed in real time. The steps of obtaining a full coverage monitoring configuration are as follows:

[0015] S101: Use on-site surveying equipment to measure the terrain in the water conservancy project construction area, record the terrain height difference and key terrain features, including measuring the altitude and slope of each key point, calculating the optimal camera position, and generating terrain data records;

[0016] S102: Designing an installation plan for the 360-degree panoramic camera based on the terrain data record and in combination with the BIM model, adjusting the installation position and angle of each camera to cover the field of view, setting the angle of the camera position to check the range of the field of view intersection, and generating a camera installation configuration;

[0017] S103: Using the camera installation configuration, conduct field tests, adjust the image overlap to check the full coverage of the water conservancy project construction area, and obtain a full coverage monitoring configuration by adjusting the camera angle and reconfiguring the distance between cameras.

[0018] As a further solution of the present invention, according to the full coverage monitoring configuration, the steps of synchronizing the image and video data using the optical fiber network, checking the speed and stability of data transmission, automatically detecting and correcting transmission errors, and obtaining a real-time image transmission link are specifically as follows:

[0019] S201: Using the full coverage monitoring configuration, configuring an optical fiber network to connect the camera and the central processing unit, setting network path and bandwidth parameters, matching the real-time transmission requirements of images and videos, and generating a network connection configuration;

[0020] S202: Based on the network connection configuration, perform a real-time transmission test, monitor the data transmission speed and stability, and record the transmission rate and delay data during the test to obtain a transmission efficiency analysis result;

[0021] S203: According to the transmission efficiency analysis result, automatically detect errors, analyze transmission interruptions and data errors, respond to and implement error correction measures, and adjust network parameters to optimize data flow to obtain a real-time image transmission link.

[0022] As a further solution of the present invention, the steps of monitoring the changes in the illumination intensity of the 360-degree panoramic view of the water conservancy project construction through the real-time image transmission link, adjusting the image exposure and contrast through time series analysis and prediction of the illumination trend in the short term, and obtaining the environmental image adjustment parameters are specifically as follows:

[0023] S301: Collecting illumination data of multiple cameras through the real-time image transmission link, continuously recording sunlight intensity and change patterns using a photosensitive sensor, and generating an illumination data set;

[0024] S302: According to the illumination data set, applying time series analysis technology, predicting the illumination change trend in the short term, evaluating potential illumination intensity fluctuations, and generating illumination trend prediction results;

[0025] S303: Using the illumination trend prediction result, adjusting the exposure parameters and contrast settings of each camera, verifying that the image quality under the differentiated time and illumination conditions is optimized, and obtaining the environmental image adjustment parameters.

[0026] As a further solution of the present invention, the steps of using the environmental image adjustment parameters to assign a timestamp and a location tag to the image, performing image stitching, eliminating seams by adjusting the edges of the image stitching, and optimizing the image color balance and uniform tone to obtain a panoramic image output are specifically as follows:

[0027] S401: selecting multiple 360-degree panoramic images of the water conservancy project construction according to the environmental image adjustment parameters, adjusting the exposure parameters of the images to match the environmental light conditions, iteratively optimizing the color saturation and contrast, avoiding the illumination difference at the splicing point, and obtaining a color-adjusted image sequence;

[0028] S402: Based on the color-adjusted image sequence, identifying edge overlap regions, assigning time stamps and location tags to the images, and manually adjusting image positions and angles to eliminate image seams and generate seam-optimized images;

[0029] S403: Using the seam-optimized image, color balancing is performed on the 360-degree panoramic image of the water conservancy project construction, and the color tone of the entire image is unified by adjusting the brightness and contrast to obtain a panoramic image output.

[0030] As a further solution of the present invention, based on the panoramic image output, data encryption is performed, and the processed image and video data are stored by setting data access and modification permissions to obtain a secure data storage service. Specifically, the steps are as follows:

[0031] S501: encrypting the panoramic image output and the video data using a symmetric encryption algorithm, uploading and synchronizing the data, verifying the security of the data in transmission and storage, and generating an encrypted data set;

[0032] S502: According to the encrypted data set, configure data access rights, set access control lists for users of different levels, limit access and modification rights, verify the legitimacy and security of data access according to user identity authentication and authorization levels, and obtain access control configuration;

[0033] S503: Apply the access control configuration to data storage, and obtain a secure data storage service by storing the processed image and video data in a designated secure data storage service.

[0034] As a further solution of the present invention, the formula of the symmetric encryption algorithm is as follows:

[0035]

[0036] in, is the ciphertext obtained by encrypting the plaintext with the key, P z is the plain text, k z is the key, is the XOR operator, S z is the timestamp scaling factor, T z is the data length adjustment factor, N z Add value to the noise.

[0037] As a further solution of the present invention, the secure data storage service is used to design and render the 360-degree panoramic image data using the BIM model, and the on-site deviation from the water conservancy project construction area is analyzed, the response speed of problem detection is adjusted, and the construction progress and the identification ability of potential quality problems are optimized. The steps of obtaining the panoramic evaluation log are specifically as follows:

[0038] S601: Based on the secure data storage service, a 360-degree panoramic image of the water conservancy project construction is designed and rendered using the BIM model, and the stored encrypted image data is read, decrypted and loaded, and initial visual content recognition is performed to generate a visual analysis data set;

[0039] S602: Perform real-time problem detection on the visual analysis data set, optimize the speed and efficiency of real-time detection by adjusting the response time, and identify construction progress deviations and potential quality defects to obtain problem detection results;

[0040] S603: Using the problem detection results, by real-time monitoring of the 360-degree panoramic view of the water conservancy project construction, analyzing the effect of image design rendering and the deviation on site, summarizing the records of construction progress and the classification statistics of quality problems, evaluating the impact and effect of problem solving measures, and obtaining a panoramic evaluation log.

[0041] A 360-degree panoramic monitoring system for BIM construction, the 360-degree panoramic monitoring system for BIM construction is used to execute the above-mentioned 360-degree panoramic monitoring method for BIM construction, the system includes:

[0042] The camera layout module deploys 360-degree panoramic cameras in the water conservancy project construction area, uses the BIM model to adjust the camera spacing and angles according to the terrain characteristics, identifies the overlapping parts of the images, conducts field of view tests, and generates a full coverage monitoring configuration;

[0043] The data synchronization module synchronizes image and video data through the optical fiber network based on the full coverage monitoring configuration, tests the data transmission speed, detects the stability, automatically corrects the transmission error, performs the transmission link test, and obtains the real-time image transmission link;

[0044] The environment adjustment module monitors the change of light intensity, performs time series analysis, predicts short-term light trends, adjusts image exposure and contrast, and obtains environment image adjustment parameters through the real-time image transmission link;

[0045] The image processing module uses the environmental image adjustment parameters to perform image stitching according to the time and location tags of the image, adjust the stitching edges to eliminate seams, optimize the image color balance, perform color adjustment tests, and generate a panoramic image output;

[0046] The secure storage module performs data encryption based on the panoramic image output, sets data access and modification permissions, stores processed image and video data, optimizes the response speed and efficiency of problem detection, and obtains a panoramic assessment log.

[0047] Compared with the prior art, the advantages and positive effects of the present invention are:

[0048] In the present invention, the speed and quality of image processing are significantly improved by analyzing and optimizing the full coverage monitoring configuration and real-time image transmission link of the on-site situation. In the construction of water conservancy projects, 360-degree panoramic cameras are deployed and the camera configuration is adjusted according to the terrain and field of view requirements in combination with the BIM model to enhance the comprehensiveness and accuracy of monitoring. Image and video data are synchronized through a high-speed optical fiber network, which not only improves the stability of data transmission, but also ensures the integrity of data by automatically detecting and correcting transmission errors. The change of light intensity is predicted by time series analysis, and the exposure and contrast of the image are adjusted. Dynamic adjustment enables the output image to maintain the best quality under various lighting conditions. Timestamps are assigned to images, and the shooting position is tracked in real time. The seams are reduced and the colors are unified through the optimization of image splicing technology, making the panoramic image more smooth and realistic, and the BIM model is used for image rendering, and the deviation of the construction site is detected in real time by comparing with the water conservancy project site. Data encryption and access permission settings provide a higher level of security for monitoring data, effectively improving the efficiency, accuracy and security of project management. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the workflow of the present invention;

[0050] Figure 2 This is a detailed flow chart of S1 of the present invention;

[0051] Figure 3 This is a detailed flow chart of S2 of the present invention;

[0052] Figure 4 This is a detailed flow chart of S3 of the present invention;

[0053] Figure 5 This is a detailed flow chart of S4 of the present invention;

[0054] Figure 6 This is a detailed flow chart of S5 of the present invention;

[0055] Figure 7 This is a detailed flow chart of S6 of the present invention;

[0056] Figure 8 It is a system flow chart of the present invention. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0058] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0059] See also Figure 1 The present invention provides a technical solution for a 360-degree panoramic monitoring method in BIM construction, comprising the following steps:

[0060] S1: Deploy 360-degree panoramic cameras in the water conservancy project construction area, adjust the camera spacing and angle according to the terrain and field of view requirements, identify the overlapping parts of the camera images through the field of view angle, and obtain a full coverage monitoring configuration;

[0061] S2: Based on the full-coverage monitoring configuration, the image and video data captured by the camera are synchronized using the optical fiber network, the speed and stability of data transmission are checked, transmission errors are automatically detected and corrected, and a real-time image transmission link is obtained;

[0062] S3: Monitor the changes in the light intensity of the 360-degree panoramic view of the water conservancy project construction through a real-time image transmission link, analyze and predict the short-term light trend through time series, and adjust the image exposure and contrast according to the light trend to obtain the environmental image adjustment parameters;

[0063] S4: using the environment image to adjust the parameters, assigning timestamps and location tags to the images, performing image stitching, eliminating seams by adjusting the edges of the image stitching, and optimizing the image color balance and unified tone to obtain a panoramic image output;

[0064] S5: Based on the panoramic image output, a secure storage service is deployed in the cloud, data encryption is performed, and the processed image and video data are stored by setting data access and modification permissions to obtain a secure data storage service;

[0065] S6: Using secure data storage services, the 360-degree panoramic image data is designed and rendered using the BIM model, and the on-site deviations from the water conservancy project construction area are analyzed to adjust the response speed and efficiency of problem detection, optimize the water conservancy project construction progress and the automatic identification capabilities of potential quality problems, and obtain a panoramic evaluation log.

[0066] The full coverage monitoring configuration includes the camera's installation height, coverage angle and interval distance; the real-time image transmission link includes network delay data, transmission rate and error detection and correction mechanism; the environmental image adjustment parameters include automatic exposure adjustment value, contrast adjustment range and light tracking frequency; the panoramic image output includes image resolution, color correction and edge adjustment effects; the secure data storage service includes the encryption standard used, access control level and data backup frequency; the panoramic assessment log includes the identification of the water conservancy project construction area, the progress update cycle and the frequency of quality abnormalities in the construction area.

[0067] See also Figure 2 , deploy 360-degree panoramic cameras in the water conservancy project construction area, combine with BIM model, adjust the camera spacing and angle according to the terrain and field of view requirements, identify the overlapping parts of the camera images, and analyze the on-site conditions of the water conservancy project construction area in real time. The specific steps for obtaining full coverage monitoring configuration are as follows:

[0068] S101: Use on-site surveying equipment to measure the terrain in the water conservancy project construction area, record the terrain height difference and key terrain features, including measuring the altitude and slope of each key point, calculating the optimal camera position, and generating terrain data records. The execution process is as follows;

[0069] Use on-site surveying equipment to conduct detailed measurements of the terrain in the water conservancy project construction area, including recording the height difference of the terrain and key terrain features, such as the altitude and slope of each key point. Through high-precision GPS equipment and laser scanners, the details of the terrain can be accurately determined, providing important geographic data for subsequent project construction. Use the data to calculate the optimal camera installation position to ensure that the monitoring system can fully cover the entire construction area and generate terrain data records. The formula used is:

[0070]

[0071] Among them, A terrain Represents terrain data record, H a,i is the altitude of the ath key point, exp is the natural exponential function, θ a,i is the slope angle of the point, S a,i is the slope sensitivity, k a is the adjustment factor, n a Represents the total number of key points.

[0072] S102: Based on the terrain data records and in combination with the BIM model, design the installation plan of the 360-degree panoramic camera, adjust the installation position and angle of each camera to cover the field of view, set the angle of the camera position to check the range of field of view intersection, and generate the execution process of the camera installation configuration as follows;

[0073] According to the terrain data records and combined with the BIM model, the installation plan of the 360 ​​panoramic camera is designed. The focus is to ensure that the installation position and angle of each camera can maximize the field of view coverage and achieve monitoring without blind spots in the area. By using the BIM model, the installation position of each camera is precisely adjusted, and the angle is set to check the range of field of view intersection. The effects of different configurations will be repeatedly tested in the process to ensure that all important areas can be effectively monitored and generate a camera installation configuration plan. The formula used is:

[0074]

[0075] Among them, B cam Indicates the camera installation configuration, P b,i is the installation position accuracy of the bth camera, V b,i is the visual field coverage, O b,i is the visual field overlap area, n b Represents the total number of cameras.

[0076] S103: Using the camera installation configuration, conducting field tests, adjusting the image overlap to check the full coverage of the water conservancy project construction area, and obtaining the full coverage monitoring configuration by adjusting the camera angle and reconfiguring the distance between cameras. The execution process is as follows;

[0077] Using the camera installation configuration, field testing of the installed camera configuration, the engineering team will conduct on-site testing to check and ensure full coverage of the water conservancy project construction area by adjusting the camera angle and reconfiguring the distance between cameras. This includes testing the overlapping parts of the images to ensure seamless connection between the monitoring images, and adjusting the camera position to fill the existing monitoring blind spots to obtain a full coverage monitoring configuration. The formula used is:

[0078]

[0079] Among them, C cover Indicates full coverage monitoring configuration, C c,i is the coverage capability of the bth camera, G c,i Indicates the pattern of image overlap, E c,i is the efficiency index, n b Represents the total number of cameras.

[0080] See also Figure 3 ,According to the full coverage monitoring configuration, the steps of synchronizing the image and video data using the optical fiber network, checking the speed and stability of data transmission, automatically detecting and correcting transmission errors, and obtaining the real-time image transmission link are as follows:

[0081] S201: Using the full coverage monitoring configuration, configure the optical fiber network to connect the camera and the central processing unit, set the network path and bandwidth parameters, match the real-time transmission requirements of the image and video, and generate the execution process of the network connection configuration as follows;

[0082] Use the full coverage monitoring configuration to configure the fiber optic network, connect the camera to the central processing unit, including setting the network path and bandwidth parameters to ensure that the real-time transmission requirements of images and videos are met. Considering the high requirements of real-time monitoring on network speed and stability, the fiber optic network is chosen because its high bandwidth and low latency characteristics are very suitable for large-scale data transmission. By accurately calculating the data flow and transmission rate, configuring appropriate network routing and switch equipment, ensuring that the data collected by all cameras can be efficiently and stably transmitted to the processing center, the network connection configuration is generated, using the formula:

[0083]

[0084] Among them, D config Indicates network connection configuration, B d,i is the bandwidth parameter of the dth connection, L d,i Represents the network path length, T d,i is the network transmission requirement, R d,i is the expected data transfer rate, n d Represents the total number of connection points.

[0085] S202: Based on the network connection configuration, a real-time transmission test is performed to monitor the data transmission speed and stability, and the transmission rate and delay data during the test are recorded to obtain the transmission efficiency analysis result. The execution process is as follows;

[0086] Based on the network connection configuration, real-time transmission test is carried out to monitor the data transmission speed and stability. By performing load test on the configured network, the data transmission performance under different time and conditions is verified, including key parameters such as transmission rate and delay. The test is implemented to ensure that in actual operation, the network can carry batch monitoring data streams without being affected by delays or packet loss. The test results will record the performance under various network conditions in detail, make necessary adjustments and optimizations to the network, ensure the reliability and response speed of the monitoring system, and obtain the transmission efficiency analysis results. The formula used is:

[0087]

[0088] Among them, F test represents the transmission efficiency analysis score, S f,i is the data transmission speed of the fth test point, e is the base of the natural logarithm function, var(S f,i ) is the variability of speed, D f,i represents the transmission delay, n f Represents the total number of test points.

[0089] S203: According to the transmission efficiency analysis result, automatically detect errors, analyze transmission interruptions and data errors, respond to and implement error correction measures, and adjust network parameters to optimize data flow. The execution process of the real-time image transmission link is as follows;

[0090] According to the results of the transmission efficiency analysis, error detection and correction are performed, and the interruptions and data errors that occur during the transmission process are analyzed through the automated system, and error correction measures are implemented. This includes adjusting network parameters such as reconfiguring the settings of routers or switches, optimizing data flows, and preventing data conflicts and congestion. Preventive measures are also taken against network attacks or technical failures to enhance the security and stability of the network, and a real-time image transmission link is obtained, using the formula:

[0091]

[0092] Among them, G link represents the real-time image transmission link, E g,i is the efficiency of the gth link, F g,i represents the failure rate, P g,i is the error correction probability, n g Indicates the total number of links.

[0093] See also Figure 4 ,Through the real-time image transmission link, the 360-degree panoramic light intensity changes of the water conservancy project construction are monitored, and the image exposure and contrast are adjusted through time series analysis and prediction of the short-term light trends, the steps to obtain the environmental image adjustment parameters are as follows:

[0094] S301: Collect illumination data from multiple cameras through a real-time image transmission link, and use a photosensitive sensor to continuously record sunlight intensity and change patterns to generate an illumination data set. The execution process is as follows;

[0095] Through the real-time image transmission link, the illumination data of each camera area is collected. Through the light sensors installed in different positions, the system can continuously record the sunlight intensity and change patterns in each monitoring area. The data is very important for understanding how to adjust the camera settings to adapt to different ambient light conditions. For example, in the afternoon when the sun is strong, the exposure setting of the camera needs to be adjusted to avoid overexposure. By collecting illumination data, an illumination data set is formed, and the formula used is:

[0096]

[0097] Among them, D data represents the illumination dataset, I h,i is the illuminance at the hth measurement point, L h,i is the light level, e is the base of the natural logarithm function, ΔI h,i Indicates the rate of change of illumination, n h Represents the total number of measurement points.

[0098] S302: Based on the illumination data set, the time series analysis technology is applied to predict the illumination change trend in the short term, evaluate the potential illumination intensity fluctuation, and generate the illumination trend prediction result. The execution process is as follows;

[0099] Based on the illumination data set, time series analysis techniques are used to predict short-term illumination change trends from the collected illumination data set. The analysis will help assess potential fluctuations in illumination intensity in the coming days or weeks, and provide decision support for environmentally adaptive camera configuration. By analyzing historical illumination data, periodic and abnormal changes in illumination intensity can be identified, which is essential for adjusting camera exposure and contrast parameters, ensuring that the camera can capture high-quality images regardless of changes in environmental conditions, and generate illumination trend prediction results. The formula used is:

[0100]

[0101] Among them, K trend represents the light trend forecast, T k,i is the predicted light intensity at the kth time point, σ(T k,i) is the standard deviation of the predicted strength, P k,i is the prediction accuracy, n k Represents the total number of prediction points.

[0102] S303: Using the illumination trend prediction result, adjusting the exposure parameters and contrast settings of each camera, verifying that the image quality under the differentiated time and illumination conditions is optimized, and obtaining the execution flow of the environmental image adjustment parameters is as follows;

[0103] Using the lighting trend prediction results, adjust the exposure parameters and contrast settings of each camera to ensure the best image quality under different lighting conditions. For example, on days with strong sunlight, reduce the exposure value of the camera to avoid overexposure, and increase the exposure in dark conditions to ensure clear images. The parameter adjustment is based on the lighting trend prediction, which can dynamically respond to the changes in the environment such as sunrise and sunset and cloudy and sunny weather, and generate environmental image adjustment parameters. The formula used is:

[0104]

[0105] Among them, U image represents the environment image adjustment parameter, E l,i is the exposure adjustment coefficient of the bth camera, max is the maximum value, V l,i Score the visual quality, U l,i is the exposure instability, n b Represents the total number of cameras.

[0106] See also Figure 5 , using the environment image to adjust the parameters, assigning timestamps and location tags to the images, performing image stitching, eliminating seams by adjusting the edges of the image stitching, and optimizing the image color balance and unified tone, the steps to obtain the panoramic image output are as follows:

[0107] S401: According to the environmental image adjustment parameters, multiple images of the 360-degree panoramic view of the water conservancy project construction are selected, and the exposure parameters of the images are adjusted to match the environmental light conditions, and the color saturation and contrast are iteratively optimized to avoid the illumination difference at the splicing point, and the execution process of the color-adjusted image sequence is as follows;

[0108] According to the environmental image adjustment parameters, multiple 360-degree panoramic images of the water conservancy project construction area are selected, and the image exposure parameters are adjusted to match the ambient light conditions, and the color saturation and contrast are iteratively optimized. In the process, special attention is paid to avoiding the lighting differences at the splicing points to ensure seamless connection between images. Adjustments are made through professional image processing software, and each step of the change needs to be carefully evaluated to ensure the natural transition of colors and the retention of details, and the color-adjusted image sequence is generated. The formula used is:

[0109]

[0110] Among them, M colo represents the image sequence after color adjustment, E m,i is the exposure adjustment coefficient of the mth image, max is the maximum value, C m,i is the color saturation adjustment value, ΔL m,i represents the illumination difference, n m Represents the total number of images.

[0111] S402: Based on the color-adjusted image sequence, identifying the edge overlap area, assigning a timestamp and a location tag to the image, and manually adjusting the image position and angle to eliminate the image seam, and generating the seam-optimized image. The execution process is as follows;

[0112] Identify areas of overlapping edges in a color-adjusted image sequence and remove image seams by manually adjusting the image position and angle. Based on the image timestamps and location markers, operators can quickly locate the seam areas that need to be checked to ensure that the transition between images is natural and there are no visible dividing lines. High-precision image editing tools can be used to fine-tune overlapping areas to ensure continuity and visual harmony, and generate images with optimized seams, using the formula:

[0113]

[0114] Among them, O seam represents the image after seam optimization, P o,i is the position accuracy of the mth image seam, var(A o,i ) is the variability of the angle adjustment, n m Represents the total number of images.

[0115] S403: Using the seam-optimized image, color balancing is performed on the 360-degree panoramic image of the water conservancy project construction, and the color tone of the entire image is unified by adjusting the brightness and contrast to obtain the panoramic image output. The execution process is as follows;

[0116] The 360-degree panoramic image of the water conservancy project construction is color balanced using the seam-optimized image. The brightness and contrast are adjusted to unify the tone of the entire image to ensure the visual consistency and beauty of the image. This includes fine-tuning the light and shadow effects of the image, strengthening or suppressing some colors to match the lighting conditions of the actual environment, and obtaining a panoramic image output using the formula:

[0117]

[0118] Among them, P panot represents the panoramic image output, B p,iis the brightness adjustment value of the mth image, C p,o is the contrast adjustment value, V p,i represents color variability, n m Represents the total number of images.

[0119] See also Figure 6 ,Based on the panoramic image output, data encryption is performed, and the processed image and video data are stored by setting data access and modification permissions.,The specific steps of obtaining a secure data storage service are:

[0120] S501: Utilize the panoramic image output and adopt a symmetric encryption algorithm to encrypt the panoramic image output and video data, upload and synchronize the data, verify the security of the data in transmission and storage, and generate the encrypted data set. The execution process is as follows;

[0121] Using panoramic image output, symmetric encryption algorithms are used to encrypt panoramic image output and video data to ensure data security during upload and synchronization. Symmetric encryption algorithms are used because they provide faster processing speeds and stronger security, and are suitable for secure processing of large-scale data. The encrypted data will be uploaded to the central server through a secure network channel, and data synchronization will be performed to ensure real-time updates and consistency of all backups. The encryption and transmission process will also be monitored to ensure that the data has not been tampered with or leaked during transmission and storage, and an encrypted data set will be generated.

[0122] The formula for the symmetric encryption algorithm is as follows:

[0123]

[0124] in, is the ciphertext obtained by encrypting the plaintext with the key, P z is the plain text, k z is the key, is the XOR operator, S z is the timestamp scaling factor, T z is the data length adjustment factor, N z Add value to the noise.

[0125] The execution flow is as follows:

[0126] Plaintext P z With key k z Perform a bitwise XOR operation to generate the basic ciphertext in the original way, and add the operation result to the timestamp scaling factor S z Multiply to introduce time dependency and increase the complexity of decryption. The result is adjusted by the data length factor T z Perform division operation to adjust the ciphertext length to ensure the consistency of output length and add noise addition value Nz , further randomizes the output to ensure that the same ciphertext output will not be repeated for each identical plaintext input. If there is a weight coefficient, it can be determined through statistical analysis of relevant data to ensure the best balance between security and performance.

[0127] S502: According to the encrypted data set, configure data access rights, set access control lists for users of different levels, and limit access and modification rights. According to user identity authentication and authorization levels, verify the legitimacy and security of data access, and obtain the execution process of access control configuration as follows;

[0128] Configure data access permissions based on the encrypted data set, set access control lists for users at different levels, limit user access and modification permissions, and ensure that only authorized users can access sensitive data. Verifying the legitimacy and security of data access through user identity authentication and authorization levels is a key measure to ensure that data is not accessed and abused without authorization. Data access records can be tracked to provide support for security audits and obtain access control configurations. The formula used is:

[0129]

[0130] Among them, Q access Indicates access control configuration, A q,i is the authorization level of the qth user, var(A q,i ) represents the variability of user access rights, n q Represents the total number of users.

[0131] S503: Apply the access control configuration to the data storage, and obtain the execution flow of the secure data storage service by storing the processed image and video data in the designated secure data storage service as follows;

[0132] Apply configured access control to data storage to ensure that all processed image and video data is stored in the designated secure data storage service. This includes selecting an appropriate data storage solution and setting up adequate security protection measures, such as firewalls, intrusion detection, and physical security measures, to ensure that the stored data is both secure and easy to manage, while being able to quickly respond to data recovery needs. Through precise data storage configuration and management, a secure data storage service is obtained, using the formula:

[0133]

[0134] Among them, R secure represents secure data storage service, C r,i is the capacity of the rth storage unit, E r,i is the security protection level, n r Represents the total number of storage units.

[0135] See also Figure 7 , using secure data storage services, using BIM models to design and render 360-degree panoramic image data, and analyzing on-site deviations from the water conservancy project construction area, adjusting the response speed of problem detection, optimizing the construction progress and the ability to identify potential quality problems, and obtaining the panoramic assessment log in detail are as follows:

[0136] S601: Based on the secure data storage service, the 360-degree panoramic image of the water conservancy project construction is designed and rendered using the BIM model, and the stored encrypted image data is read, decrypted and loaded, and the initial visual content recognition is performed to generate the visual analysis data set. The execution process is as follows;

[0137] By combining the secure data storage service with the BIM model of the water conservancy project, including setting up the basic architecture of the secure storage service, ensuring that all data stored in the database is encrypted to avoid unauthorized access, and integrating the BIM model, the different stages and components of the water conservancy project can be simulated and displayed more accurately. Each element in the model corresponds to the actual physical component, providing 360-degree panoramic image rendering capabilities, which not only enhances the visualization of the design, but also makes project monitoring more intuitive. It also uses advanced rendering technologies such as ray tracing and shadow mapping to improve image quality, making the rendered scene more realistic and convincing, providing a highly secure and highly visual data environment, providing strong support for the design and construction of water conservancy projects, and generating visual analysis data sets.

[0138] S602: Real-time problem detection is performed on the visual analysis data set. The speed and efficiency of real-time detection are optimized by adjusting the response time, and construction progress deviations and potential quality defects are identified. The execution process of obtaining the problem detection results is as follows;

[0139] Real-time problem detection for visual analysis data sets. Using high-speed data processing and analysis technology, the system can monitor and identify construction progress deviations and potential quality defects in real time. The system will adjust the response time, optimize the detection speed and efficiency, and ensure that any construction problems can be discovered and responded to in a timely manner. Through real-time monitoring, the construction team can take quick measures to prevent small problems from turning into big problems, ensure construction quality and progress, and generate problem detection results.

[0140] S603: Using the problem detection results, by real-time monitoring of the 360-degree panoramic view of the water conservancy project construction, analyzing the effect of image design rendering and the deviation on site, summarizing the records of construction progress and the classification statistics of quality problems, evaluating the impact and effect of problem solving measures, and obtaining the execution process of the panoramic evaluation log is as follows;

[0141] Using the problem detection results, through real-time monitoring of the 360-degree panoramic view of the water conservancy project construction, the effect of image design rendering and on-site deviation analysis are carried out, which involves the setting of the real-time monitoring system, including the layout of the camera and the optimization of the monitoring angle, to ensure that all key areas of the project are covered. The captured images are analyzed using advanced image processing technology to identify the deviations between the design drawings and the actual construction, and the deviations are classified and recorded. This is done through advanced image recognition algorithms, including edge detection, morphological transformation and deep learning models. The data is associated with construction progress records and quality problems to reflect the types and frequencies of various quality problems, providing data support for evaluating the impact of problem-solving measures, recording the effect of each problem-solving measure, and its impact on the overall project progress and quality, helping the project management team to formulate more effective improvement measures and decisions, optimize future construction plans, and obtain a panoramic evaluation log.

[0142] See also Figure 8 , a 360-degree panoramic monitoring system for BIM construction, a 360-degree panoramic monitoring system for BIM construction, is used to execute the above-mentioned 360-degree panoramic monitoring method for BIM construction, and the system includes:

[0143] The camera layout module deploys 360-degree panoramic cameras in the water conservancy project construction area, uses the BIM model to adjust the camera spacing and angles according to the terrain characteristics, identifies the overlapping parts of the images, conducts field of view tests, and generates a full coverage monitoring configuration;

[0144] The data synchronization module is based on a full-coverage monitoring configuration, synchronizes image and video data through the optical fiber network, tests data transmission speed, detects stability, automatically corrects transmission errors, performs transmission link tests, and obtains real-time image transmission links;

[0145] The environment adjustment module monitors the changes in light intensity through a real-time image transmission link, performs time series analysis, predicts short-term light trends, adjusts image exposure and contrast, and obtains environment image adjustment parameters;

[0146] The image processing module uses the environment image to adjust parameters, performs image stitching according to the time and location tags of the image, adjusts the stitching edges to eliminate seams, optimizes the image color balance, performs color adjustment tests, and generates a panoramic image output;

[0147] The secure storage module performs data encryption based on the panoramic image output, sets data access and modification permissions, stores processed image and video data, optimizes the response speed and efficiency of problem detection, and obtains a panoramic assessment log.

[0148] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A 360-degree panoramic monitoring method for BIM construction, characterized in that: The following steps are involved: Deploy 360-degree panoramic cameras in the water conservancy project construction area, combine with BIM models, adjust the camera spacing and angles according to the terrain and field of view requirements, identify the overlapping parts of the camera images, analyze the on-site conditions of the water conservancy project construction area in real time, and obtain full coverage monitoring configuration; According to the full coverage monitoring configuration, the image and video data are synchronized using the optical fiber network, the speed and stability of data transmission are checked, transmission errors are automatically detected and corrected, and a real-time image transmission link is obtained; Through the real-time image transmission link, the changes in the light intensity of the 360-degree panoramic view of the water conservancy project construction are monitored, and through time series analysis and prediction of short-term light trends, the image exposure and contrast are adjusted to obtain environmental image adjustment parameters; Using the environment image adjustment parameters, assigning timestamps and location tags to images, performing image stitching, eliminating seams by adjusting the edges of the image stitching, and optimizing the image color balance and uniform tone to obtain a panoramic image output; Based on the panoramic image output, data encryption is performed, and the processed image and video data are stored by setting data access and modification permissions to obtain a secure data storage service; By using the secure data storage service, the 360-degree panoramic image data is designed and rendered using the BIM model, and the on-site deviation from the water conservancy project construction area is analyzed, the response speed of problem detection is adjusted, the construction progress and the identification ability of potential quality problems are optimized, and a panoramic evaluation log is obtained.

2. The 360-degree panoramic monitoring method for BIM construction according to claim 1, characterized in that: The full-coverage monitoring configuration includes the camera's installation height, coverage angle and interval distance; the real-time image transmission link includes network delay data, transmission rate and error detection and correction mechanism; the environmental image adjustment parameters include automatic exposure adjustment value, contrast adjustment range and light tracking frequency; the panoramic image output includes image resolution, color correction and edge adjustment effects; the secure data storage service includes the encryption standard used, access control level and data backup frequency; the panoramic assessment log includes the identification of the water conservancy project construction area, progress update cycle and quality abnormality frequency in the construction area.

3. The 360-degree panoramic monitoring method for BIM construction according to claim 1, characterized in that: Deploy 360-degree panoramic cameras in the water conservancy project construction area, combine with BIM models, adjust the camera spacing and angles according to the terrain and field of view requirements, identify the overlapping parts of the camera images, and analyze the on-site conditions of the water conservancy project construction area in real time. The specific steps to obtain full coverage monitoring configuration are as follows: Use on-site surveying equipment to measure the terrain in the water conservancy project construction area, record the terrain height difference and key terrain features, including measuring the altitude and slope of each key point, calculating the optimal camera position, and generating terrain data records; According to the terrain data records, combined with the BIM model, design the installation plan of the 360 ​​panoramic camera, adjust the installation position and angle of each camera to cover the field of view, set the angle of the camera position to check the range of the field of view intersection, and generate the camera installation configuration; The camera installation configuration was used to conduct field tests, and the overlapping parts of the images were adjusted to check the full coverage of the water conservancy project construction area. By adjusting the camera angle and reconfiguring the distance between cameras, a full coverage monitoring configuration was obtained.

4. The 360-degree panoramic monitoring method for BIM construction according to claim 1, characterized in that: According to the full coverage monitoring configuration, the steps of synchronizing the image and video data using the optical fiber network, checking the speed and stability of data transmission, automatically detecting and correcting transmission errors, and obtaining a real-time image transmission link are as follows: Using the full coverage monitoring configuration, configure the optical fiber network to connect the camera and the central processing unit, set the network path and bandwidth parameters, match the real-time transmission requirements of images and videos, and generate the network connection configuration; Based on the network connection configuration, a real-time transmission test is performed to monitor the data transmission speed and stability, and the transmission rate and delay data during the test are recorded to obtain a transmission efficiency analysis result; According to the transmission efficiency analysis results, automatic error detection is performed, transmission interruptions and data errors are analyzed, error correction measures are responded to and implemented, and network parameters are adjusted to optimize data flow to obtain a real-time image transmission link.

5. The 360-degree panoramic monitoring method for BIM construction according to claim 1, characterized in that: Through the real-time image transmission link, the changes in the illumination intensity of the 360-degree panoramic view of the water conservancy project construction are monitored, and the image exposure and contrast are adjusted through time series analysis and prediction of the illumination trend in the short term. The specific steps of obtaining the environmental image adjustment parameters are as follows: Collecting illumination data from multiple cameras through the real-time image transmission link, using photosensors to continuously record sunlight intensity and change patterns, and generating an illumination data set; Based on the illumination data set, applying time series analysis technology to predict short-term illumination change trends, evaluate potential illumination intensity fluctuations, and generate illumination trend prediction results; The illumination trend prediction results are used to adjust the exposure parameters and contrast settings of each camera, verify the optimization of image quality under differentiated time and illumination conditions, and obtain environmental image adjustment parameters.

6. The 360-degree panoramic monitoring method for BIM construction according to claim 1, characterized in that: The steps of using the environment image adjustment parameters to assign a timestamp and a location tag to the image, performing image stitching, eliminating seams by adjusting the edges of the image stitching, and optimizing the image color balance and uniform tone to obtain a panoramic image output are specifically as follows: According to the environmental image adjustment parameters, multiple 360-degree panoramic images of the water conservancy project construction are selected, and the exposure parameters of the images are adjusted to match the environmental light conditions, and the color saturation and contrast are iteratively optimized to avoid the illumination difference at the splicing point, so as to obtain a color-adjusted image sequence; Based on the color-adjusted image sequence, identifying the region with overlapping edges, assigning time stamps and location tags to the images, and eliminating image seams by manually adjusting image positions and angles to generate images with optimized seams; The seam-optimized image is used to perform color balancing on the 360-degree panoramic image of the water conservancy project construction, and the color tone of the entire image is unified by adjusting the brightness and contrast to obtain a panoramic image output.

7. The 360-degree panoramic monitoring method for BIM construction according to claim 1, characterized in that: Based on the panoramic image output, data encryption is performed, and the processed image and video data are stored by setting data access and modification permissions to obtain a secure data storage service. Specifically, the steps are as follows: Using the panoramic image output, a symmetric encryption algorithm is used to encrypt the panoramic image output and video data, and the security of the data in transmission and storage is verified by uploading and synchronizing the data to generate an encrypted data set; According to the encrypted data set, configure data access rights, set access control lists for users at different levels, limit access and modification rights, verify the legitimacy and security of data access according to user identity authentication and authorization levels, and obtain access control configuration; The access control configuration is applied to data storage, and a secure data storage service is obtained by storing the processed image and video data in a designated secure data storage service.

8. The 360-degree panoramic monitoring method for BIM construction according to claim 7, characterized in that: The formula of the symmetric encryption algorithm is as follows: in, is the ciphertext obtained by encrypting the plaintext with the key, P z is the plain text, k z is the key, is the XOR operator, S z is the timestamp scaling factor, T z is the data length adjustment factor, N z Add value to the noise.

9. The 360-degree panoramic monitoring method for BIM construction according to claim 1, characterized in that: Using the secure data storage service, the BIM model is used to design and render the 360-degree panoramic image data, and the on-site deviation from the water conservancy project construction area is analyzed, the response speed of problem detection is adjusted, and the construction progress and the identification ability of potential quality problems are optimized. The steps of obtaining the panoramic assessment log are as follows: Based on the secure data storage service, the 360-degree panoramic image of the water conservancy project construction is designed and rendered using the BIM model, and the stored encrypted image data is read, decrypted and loaded, and initial visual content recognition is performed to generate a visual analysis data set; Performing real-time problem detection on the visual analysis data set, optimizing the speed and efficiency of real-time detection by adjusting the response time, and identifying construction progress deviations and potential quality defects to obtain problem detection results; By using the problem detection results, through real-time monitoring of the 360-degree panoramic view of the water conservancy project construction, analyzing the effect of image design rendering and the deviation on site, summarizing the records of construction progress and the classification statistics of quality problems, evaluating the impact and effect of problem solving measures, a panoramic evaluation log is obtained.

10. The 360-degree panoramic monitoring system used in BIM construction is characterized by: According to any one of claims 1 to 9, the 360-degree panoramic monitoring method for BIM construction comprises: The camera layout module deploys 360-degree panoramic cameras in the water conservancy project construction area, uses the BIM model to adjust the camera spacing and angles according to the terrain characteristics, identifies the overlapping parts of the images, conducts field of view tests, and generates a full coverage monitoring configuration; The data synchronization module synchronizes image and video data through the optical fiber network based on the full coverage monitoring configuration, tests the data transmission speed, detects the stability, automatically corrects the transmission error, performs the transmission link test, and obtains the real-time image transmission link; The environment adjustment module monitors the change of light intensity, performs time series analysis, predicts short-term light trends, adjusts image exposure and contrast, and obtains environment image adjustment parameters through the real-time image transmission link; The image processing module uses the environmental image adjustment parameters to perform image stitching according to the time and location tags of the image, adjust the stitching edges to eliminate seams, optimize the image color balance, perform color adjustment tests, and generate a panoramic image output; The secure storage module performs data encryption based on the panoramic image output, sets data access and modification permissions, stores processed image and video data, optimizes the response speed and efficiency of problem detection, and obtains a panoramic assessment log.

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