Three-dimensional imaging adjusting system for sand table display

Abstract

The invention belongs to the technical field of three-dimensional imaging and sand table interaction, and particularly relates to a three-dimensional imaging adjusting system for sand table display, which comprises a physical sand table parameter acquisition module for acquiring basic parameters of a physical sand table in real time; the AI visual angle pre-judging and adjusting module is used for pre-judging an optimal visual angle according to user requirements and sand table parameters and controlling a stepping motor to drive a projector / holographic equipment to carry out visual angle adjustment; and the imaging definition linkage calibration module is used for monitoring the illumination intensity of the display space in real time, dynamically adjusting the contrast ratio and the resolution ratio according to the illumination intensity, and automatically calibrating the proportion of three-dimensional imaging according to the sand table proportion parameter. According to the invention, through cooperation of the physical sand table parameter acquisition module and the imaging definition linkage calibration module, 1: 1 automatic matching of the three-dimensional imaging proportion and the physical sand table is realized, and the problems of unbalance of the proportion of subway carriages and roads are thoroughly avoided.

Description

Technical Field

[0001] This invention relates to the field of three-dimensional imaging and sand table interaction technology, specifically a three-dimensional imaging adjustment system for sand table display. Background Technology

[0002] With the development of display technology, traditional physical sand tables have gradually incorporated 3D imaging technology. Through projectors, holographic devices, and other means, virtual scenes (such as building interiors, traffic flow, and terrain changes) are superimposed onto the physical sand table, enhancing the intuitiveness and immersive experience of the display. Currently, 3D imaging adjustment systems are widely used in:

[0003] Real estate marketing: Showing customers the community environment and unit layouts after the building is completed;

[0004] Urban planning: Assisting planners in predicting the impact of road widening and park construction on the surrounding area;

[0005] Military simulation: Simulates the dynamic changes in battlefield terrain and troop deployment.

[0006] However, existing 3D imaging adjustment systems still have many technical shortcomings in practical applications, making it difficult to meet the display needs of complex scenarios, as detailed below:

[0007] 1. The imaging angle adjustment lacks flexibility and cannot adapt to the needs of multiple scenarios.

[0008] Existing systems mostly use fixed-angle projection or manual knob adjustment, resulting in a limited viewing angle range (typically only ±30°), and the adjustment process is prone to stuttering and delays. For example, in real estate model displays, when a customer wants to observe the view from the "view of a resident on the 15th floor of Building 12," existing systems require multiple manual adjustments of the projector angle, which is not only time-consuming (averaging over 2 minutes of adjustment time) but also difficult to accurately locate the target viewing angle. The final image presented deviates from the customer's expectations by more than 15%, affecting the display effect.

[0009] 2. The 3D imaging has a low degree of matching with the physical sand table, and the clarity is easily distorted.

[0010] The existing system lacks a parameter linkage mechanism between 3D imaging and the physical sand table, often resulting in a disconnect between the imaging scale and detail accuracy. For example, in the display of an urban planning sand table (scale 1:500), when a 3D image of a "subway line operation simulation" needs to be overlaid, the existing system cannot automatically match the sand table scale. This leads to an imbalance between the width of the subway car in the image and the width of the road in the physical sand table (the actual scale should be 1:500, but the image displays as 1:300). Furthermore, as the display time increases (exceeding 30 minutes), the image becomes blurred at the edges due to ambient light interference, and the clarity decreases by 40%, making it impossible for planners to accurately determine the spatial relationship between the subway line and the road.

[0011] Third, conflicts arise during multi-user interaction, and access control is lacking.

[0012] In multi-user collaborative scenarios (such as military strategic simulations), multiple users need to simultaneously adjust the imaging of different areas (e.g., user A adjusts the terrain imaging of the eastern position, and user B adjusts the troop deployment imaging of the western position). Existing systems only support single-user operation, and when multiple users adjust simultaneously, imaging overlap, lag, or even system crashes can occur. For example, in a military exercise, two commanders simultaneously zoomed in on imaging of different areas through the control panel, and the system experienced a fault where "the imaging of the eastern position covered the western position." The fault recovery time exceeded 5 minutes, seriously affecting the efficiency of the exercise.

[0013] Based on the above, a three-dimensional imaging adjustment system for sand table display is invented. Summary of the Invention

[0014] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0015] A three-dimensional imaging adjustment system for sand table display, comprising:

[0016] The physical sand table parameter acquisition module is used to collect the basic parameters of the physical sand table in real time.

[0017] The AI ​​perspective prediction and adjustment module is used to predict the optimal perspective based on user needs and sand table parameters, and control the stepper motor to drive the projector / holographic device to adjust the perspective.

[0018] The imaging clarity linkage calibration module is used to monitor the light intensity of the display space in real time and dynamically adjust the contrast and resolution according to the light intensity. At the same time, it automatically calibrates the scale of the 3D imaging according to the scale parameters of the sand table.

[0019] The multi-user permission management module uses a channel partitioning + permission hierarchy mechanism to first divide the sandbox into multiple independent adjustment areas, so that after a user logs in after authentication, they can apply for adjustment permissions in a specified area; at the same time, an independent adjustment channel is assigned to each user.

[0020] The central control module is used to realize data interaction and command issuance. It first receives the sand table parameters from the physical sand table parameter acquisition module and the user's input requirements. Then it sends control signals to the AI ​​perspective prediction and adjustment module, the imaging clarity linkage calibration module and the multi-user permission management module, and at the same time, it provides real-time feedback on the adjustment status to the user terminal.

[0021] The equipment status monitoring and early warning module is used to receive data from each module in real time and to send early warning information back to the central control module.

[0022] As a preferred embodiment of the three-dimensional imaging adjustment system for sand table display described in this invention, the physical sand table parameter acquisition module includes:

[0023] The module initialization module is used to automatically activate the laser scanner and pressure sensor after startup, complete the equipment self-test, and ensure that the equipment is in normal working condition.

[0024] The basic parameter scanning module for the sand table is used to enable the laser scanner to collect the overall dimensions of the physical sand table according to the preset path, calculate and generate the sand table scale, and locate the three-dimensional coordinates of each physical model in the sand table to establish a sand table model coordinate library.

[0025] The user interaction location sensing module is used to locate the precise coordinates of the touch point by sensing the touch pressure signal based on the pressure sensor embedded in the bottom of the sand table when the user touches a specific area of ​​the sand table.

[0026] The parameter integration and transmission module is used to integrate the sand table scale, model coordinates, and touch point coordinates into a standardized data packet, and send it to the central control module in real time via wired transmission, waiting for subsequent module calls.

[0027] As a preferred embodiment of the three-dimensional imaging adjustment system for sand table display described in this invention, the AI ​​perspective prediction and adjustment module includes:

[0028] The perspective database calling module is used to automatically load a preset scene-based perspective database to provide a data foundation for perspective prediction.

[0029] The requirement and parameter receiving module is used to receive user requirement instructions and data from the physical sand table parameter acquisition module forwarded by the central control module;

[0030] The optimal view prediction module is used to perform calculations based on user requirements and data from the central control module. First, it combines the coordinates of the sand table model to determine the spatial location of the target area; then, it matches similar scene views in the view database to calculate the optimal view parameters.

[0031] The viewing angle drive adjustment module is used to send adjustment commands to the stepper motor drive unit so that the stepper motor drives the projector / holographic device to move according to the optimal viewing angle parameters, achieving 0.1° precision angle fine adjustment, while providing real-time feedback on the adjustment progress;

[0032] The adjustment completion feedback module is used to send a view adjustment completion signal to the central control module after the device reaches the target view, and to display the current view parameters on the user terminal.

[0033] As a preferred embodiment of the three-dimensional imaging adjustment system for sand table display described in this invention, the imaging sharpness linkage calibration module includes:

[0034] The environment and parameter data acquisition module is used to monitor the light intensity of the exhibition space in real time; and to receive the scale data of the physical sand table from the physical sand table parameter acquisition module from the central control module.

[0035] The imaging scale calibration module is used to automatically lock the output scale of the three-dimensional imaging based on the scale data of the sand table, and send a scale calibration completion signal to the central control module after calibration is completed.

[0036] The sharpness parameter adjustment module is used to dynamically adjust imaging parameters based on illumination data;

[0037] The real-time dynamic calibration module is used to continuously monitor the light intensity and the scale of the sand table, and to check the imaging scale and sharpness parameters every 5 seconds.

[0038] As a preferred embodiment of the three-dimensional imaging adjustment system for sand table display described in this invention, the multi-user access control module includes:

[0039] The user authentication module is used to initiate an operation request through the terminal and start the authentication process; and after successful authentication, it displays a list of operable sandbox areas.

[0040] The adjustment permission application module allows users to select the target adjustment area from the area list and submit a permission application;

[0041] The area permission verification and channel allocation module is used to verify the current permission status of the target area; if the area is free, an independent adjustment channel is allocated to the user; if the area is occupied, the terminal will display that the area is occupied and real-time imaging can be viewed; at the same time, it can forcibly revoke the permissions of the occupied area.

[0042] The operation permission control module enables authorized users to adjust the imaging of the target area, while also intercepting operation commands from unauthorized areas in real time.

[0043] The permission status feedback and release module is used to provide feedback on the current permission information to the user terminal; and can manually release permissions after the user completes the operation, or automatically release permissions after they expire, restoring the area to an idle state for other users to apply for.

[0044] As a preferred embodiment of the three-dimensional imaging adjustment system for sand table display described in this invention, the device status monitoring and early warning module includes:

[0045] The full equipment parameter monitoring module is used to collect the status of key equipment in real time through current sensors, temperature sensors, and displacement sensors;

[0046] The multi-level early warning mechanism module is used to set device parameter thresholds, and when an early warning is triggered, it can push pop-up windows and voice reminders to the user terminal through the central control module.

[0047] The fault tracing and maintenance guidance module is used to automatically analyze the fault-related equipment after the warning is triggered and generate a visual maintenance guide, which supports administrators to export maintenance reports with one click.

[0048] Compared with existing technologies:

[0049] 1. Through the AI ​​perspective prediction and adjustment module, the system enables users to simply input their needs, and the AI ​​can quickly match the optimal perspective solution from a pre-set massive database of scenario-based perspectives and drive the stepper motor to precisely adjust the projection equipment. Whether it is simulating the perspective of a resident in a real estate display or the complex observation perspective of a military simulation, the system can flexibly switch and easily adapt to various scenario requirements, achieving true dynamic perspective adjustment.

[0050] 2. Through the close cooperation between the imaging clarity linkage calibration module and the physical sand table parameter acquisition module, it can realize the real-time acquisition of sand table scale and model parameters, and automatically match the 3D imaging scale with the physical sand table precisely, eliminating the problem of imbalance between imaging and sand table size; at the same time, it can monitor changes in ambient light in real time and dynamically adjust contrast and resolution according to light intensity, ensuring that the imaging is always clear and stable, and is not affected by environmental factors.

[0051] 3. Through the multi-user permission management module, it can ensure that different users can adjust different areas of the sandbox at the same time without interfering with each other. In addition, it can enable administrators to allocate and revoke permissions in real time, realize efficient and orderly management in multi-user interaction scenarios, and completely solve the problems of chaotic permissions and multi-user operation conflicts in traditional systems. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the overall framework of the present invention;

[0053] Figure 2 This is a schematic diagram of the physical sand table parameter acquisition module framework of the present invention;

[0054] Figure 3 This is a schematic diagram of the AI ​​perspective prediction and adjustment module framework of the present invention;

[0055] Figure 4 This is a schematic diagram of the imaging sharpness linkage calibration module framework of the present invention;

[0056] Figure 5 This is a schematic diagram of the multi-user permission management module framework of the present invention;

[0057] Figure 6This is a schematic diagram of the equipment status monitoring and early warning module framework of the present invention. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0059] This invention provides a three-dimensional imaging adjustment system for sand table display. Please refer to [link / reference]. Figures 1-6 ,include:

[0060] The physical sand table parameter acquisition module is used to collect the basic parameters of the physical sand table in real time.

[0061] The AI ​​perspective prediction and adjustment module is used to predict the optimal perspective based on user needs and sand table parameters, and control the stepper motor to drive the projector / holographic device to adjust the perspective.

[0062] The imaging clarity linkage calibration module is used to monitor the light intensity of the display space in real time and dynamically adjust the contrast and resolution according to the light intensity. At the same time, it automatically calibrates the scale of the 3D imaging according to the scale parameters of the sand table.

[0063] The multi-user permission management module uses a channel partitioning + permission hierarchy mechanism to first divide the sandbox into multiple independent adjustment areas. After a user logs in with authentication, they can apply for adjustment permissions for a specified area. At the same time, each user is assigned an independent adjustment channel. Only one user is allowed to operate in the same area. Other users can view but cannot modify it to avoid imaging conflicts.

[0064] The central control module is used to realize data interaction and command issuance. It first receives the sand table parameters from the physical sand table parameter acquisition module and the user's input requirements. Then it sends control signals to the AI ​​perspective prediction and adjustment module, the imaging clarity linkage calibration module and the multi-user permission management module. At the same time, it provides real-time feedback on the adjustment status (such as "perspective adjustment completed" and "permissions assigned") to the user terminal (touch screen or mobile tablet).

[0065] The equipment status monitoring and early warning module is used to receive data from each module in real time and to send early warning information back to the central control module.

[0066] The physical sand table parameter acquisition module includes:

[0067] The module initialization module is used to automatically activate the laser scanner and pressure sensor after startup, complete the equipment self-test, and ensure that the equipment is in normal working condition.

[0068] The basic parameter scanning module for the sand table is used to enable the laser scanner to collect the overall dimensions of the physical sand table according to the preset path, calculate and generate the sand table scale, and at the same time locate the three-dimensional coordinates (X / Y axis plane coordinates, Z axis height) of each physical model (building, road, terrain) in the sand table to establish a sand table model coordinate library.

[0069] The user interaction location sensing module is used to locate the precise coordinates of the touch point by sensing the touch pressure signal based on the pressure sensor embedded in the bottom of the sand table when the user touches a specific area of ​​the sand table.

[0070] The parameter integration and transmission module is used to integrate the sand table scale, model coordinates, and touch point coordinates into a standardized data packet, and send it to the central control module in real time via wired transmission (such as Ethernet), waiting for subsequent module calls.

[0071] The AI ​​perspective prediction and adjustment module includes:

[0072] The perspective database calling module is used to automatically load preset scenario-based perspective databases (such as "resident's perspective" and "community overview perspective" in real estate scenarios, and "frontal view" and "high point perspective" in military scenarios) to provide a data foundation for perspective prediction.

[0073] The demand and parameter receiving module is used to receive user demand commands ("view of the 15th floor of Building 12" input via touch screen or voice command "view the western position deployment") and data from the physical sand table parameter acquisition module forwarded by the central control module.

[0074] The optimal viewing angle prediction module is used to perform calculations based on user requirements and data from the central control module. First, it combines the coordinates of the sand table model to determine the spatial location of the target area (such as Building 12). Then, it matches similar scene viewing angles in the viewing angle database to calculate the optimal viewing angle parameters (such as "32° angle with the ground, horizontal offset of 2.5m, and vertical height of 1.8m").

[0075] The viewing angle drive adjustment module is used to send adjustment commands to the stepper motor drive unit so that the stepper motor drives the projector / holographic device to move according to the optimal viewing angle parameters, achieving 0.1° precision angle fine adjustment, while providing real-time feedback on the adjustment progress (e.g., "adjusted to 28° angle, 4° remaining").

[0076] The adjustment completion feedback module is used to send a viewing angle adjustment completion signal to the central control module after the device reaches the target viewing angle, and to display the current viewing angle parameters (such as "current viewing angle: 32° angle, horizontal offset 2.5m") on the user terminal (touch screen).

[0077] The imaging sharpness linkage calibration module includes:

[0078] The environmental and parameter data acquisition module is used to monitor the light intensity of the exhibition space in real time, collecting data once every 2 seconds and recording the trend of light change (such as "from 400 lux to 500 lux"); and receiving the sand table scale data from the physical sand table parameter acquisition module from the central control module.

[0079] The imaging scale calibration module is used to automatically lock the output scale of the 3D imaging based on the scale data of the sand table. If the scale of the sand table is 1:500, the size of the virtual model (such as a subway car or building layout) will be scaled by 1:500 to ensure that the imaging is completely matched with the size of the physical sand table model. After calibration, a scale calibration completion signal will be sent to the central control module.

[0080] The resolution parameter adjustment module is used to dynamically adjust imaging parameters based on illumination data. When the illumination intensity changes by 100 lux, the resolution is adaptively adjusted by ±10% (e.g., when the illumination increases from 400 lux to 500 lux, the resolution is adjusted from 1600×900 to 1920×1080). Contrast is adjusted simultaneously (contrast is increased by 5%-10% when the illumination is enhanced) to avoid images that are too bright or too dark.

[0081] The real-time dynamic calibration module continuously monitors the light intensity and the scale of the sand table (if the physical model of the sand table is adjusted, the scale data needs to be received again), and checks the imaging scale and sharpness parameters every 5 seconds to ensure that the sharpness error of the imaging edge is always less than 5%.

[0082] The multi-user access control module includes:

[0083] The user authentication module is used to initiate operation requests and start the authentication process through the terminal. It supports two authentication methods: password input (administrator presets user password) or facial recognition (calls the built-in camera to compare with the user's face database); and after successful authentication, it displays a list of operable sandbox areas.

[0084] The adjustment permission application module allows users to select a target adjustment area (such as "Building 15 area") from the area list and submit an permission application.

[0085] The area permission verification and channel allocation module is used to verify the current permission status of the target area (whether it is already occupied by a user); if the area is free, an independent adjustment channel is allocated to the user (physically isolated from other user channels to avoid command conflicts); if the area is occupied, the terminal will display that the area is occupied and real-time imaging can be viewed; at the same time, it can forcibly revoke the permissions of the occupied area (administrator password confirmation is required);

[0086] The operation permission control module enables authorized users to adjust the imaging of the target area (such as zooming, rotating, and switching perspectives), while also intercepting operation commands from unauthorized areas in real time (e.g., if a user only has permission to adjust Building 15, the command to operate Building 12 will be rejected).

[0087] The permission status feedback and release module is used to provide feedback on the current permission information to the user terminal (such as "Permission area: Building 15, validity period: 30 minutes"); and can manually release the permission after the user completes the operation, or automatically release it after the permission expires, restoring the area to an idle state for other users to apply for.

[0088] The equipment status monitoring and early warning module includes:

[0089] The full equipment parameter monitoring module is used to collect the status of key equipment in real time (such as the bulb temperature of the projector, the operating current of the stepper motor, the lens cleanliness of the laser scanner, and the sensitivity of the pressure sensor) through current sensors, temperature sensors, and displacement sensors.

[0090] The multi-level early warning mechanism module is used to set equipment parameter thresholds (such as a "yellow warning" for a projector bulb temperature ≥80℃, a "red warning" for ≥90℃, and a "yellow warning" for a stepper motor current fluctuation exceeding 20%). When an early warning is triggered, it can push pop-up windows and voice reminders to the user terminal (touchscreen / administrator's mobile phone) through the central control module.

[0091] The fault tracing and maintenance guidance module is used to automatically analyze the fault-related devices after an early warning is triggered (such as checking whether the ambient light sensor is malfunctioning or whether the projector lens is offset when the "blurred imaging" warning is triggered), and generate visual maintenance guidance (such as marking "projector lens offset, needs to be adjusted 0.5° clockwise"), and supports administrators to export maintenance reports with one click.

[0092] Setting up a device status monitoring and early warning module has the following advantages:

[0093] Avoid sudden malfunctions that interrupt the presentation: This solution addresses the problem of sudden equipment failures (such as projector overheating and shutdown, stepper motor jamming) without prior warning, which can lead to presentation interruptions (such as interruptions in real estate marketing or military simulations). The yellow alert provides 15-30 minutes of advance warning, and the system automatically switches to backup equipment (such as a backup projector) when a red alert is triggered. The presentation interruption rate has been reduced from 8% in the original solution to below 1%.

[0094] Reduce maintenance costs: By accurately tracing the source of faults, the ineffective operation of "blindly checking equipment (such as replacing the laser scanner when the projector is suspected to be faulty)" is avoided. The maintenance time is reduced from 30 minutes / time to 10 minutes / time, and the annual maintenance cost is reduced by 40%.

[0095] Extend equipment lifespan: By monitoring the equipment's operating load in real time (such as reminding users to "reduce the adjustment frequency" when the stepper motor current is too high), long-term overload operation of the equipment is avoided, and the service life of core equipment (projectors, laser scanners) is extended by 2-3 years.

[0096] In practical applications, the following examples are included, but are not limited to:

[0097] Taking the "real estate model display" scenario as an example, the system workflow is explained in detail:

[0098] S1, Parameter Acquisition Stage: The laser scanner scans the real estate model (scale 1:500) to obtain the coordinates (X=10m, Y=8m) and height (physical height 20cm, corresponding to actual height 100m) of Building 12; the pressure sensor detects the user's touch on the area of ​​Building 12 and transmits the location data to the central control module.

[0099] S2, Viewpoint Adjustment Stage: The user inputs "viewpoint of the 15th floor (actually 45m) of Building 12" through the touch screen, which calls the database to calculate the optimal viewpoint (30° angle with the ground and 2m horizontal offset), and controls the stepper motor to drive the projector to adjust the angle, completing the adjustment within 10 seconds.

[0100] S3, Clarity Calibration Stage: If the light intensity of the display space is detected to be 500 lux, the resolution will be adjusted to 1920×1080 and the imaging ratio will be locked at 1:500. A three-dimensional image of the "view outside the window of the 15th floor of Building 12" will be generated and projected onto the sand table to ensure that the image window is aligned with the window of Building 12 in the physical sand table, with a clarity error of 3%.

[0101] S4, Multi-user Interaction Stage: Another user logs in via facial recognition and requests the "10th Floor View of Building 15" adjustment permission. The multi-user permission management module allocates an independent channel. When this user makes the adjustment, the imaging of the Building 12 area remains unchanged, with no conflict.

[0102] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A three-dimensional imaging adjustment system for sand table display, characterized in that, include: The physical sand table parameter acquisition module is used to collect the basic parameters of the physical sand table in real time. The AI ​​perspective prediction and adjustment module is used to predict the optimal perspective based on user needs and sand table parameters, and control the stepper motor to drive the projector / holographic device to adjust the perspective. The imaging clarity linkage calibration module is used to monitor the light intensity of the display space in real time and dynamically adjust the contrast and resolution according to the light intensity. At the same time, it automatically calibrates the scale of the 3D imaging according to the scale parameters of the sand table. The multi-user permission management module uses a channel partitioning + permission hierarchy mechanism to first divide the sandbox into multiple independent adjustment areas, so that after a user logs in after authentication, they can apply for adjustment permissions in a specified area; at the same time, an independent adjustment channel is assigned to each user. The central control module is used to realize data interaction and command issuance. It first receives the sand table parameters from the physical sand table parameter acquisition module and the user's input requirements. Then it sends control signals to the AI ​​perspective prediction and adjustment module, the imaging clarity linkage calibration module and the multi-user permission management module, and at the same time, it provides real-time feedback on the adjustment status to the user terminal. The equipment status monitoring and early warning module is used to receive data from each module in real time and to send early warning information back to the central control module.

2. The three-dimensional imaging adjustment system for sand table display according to claim 1, characterized in that, The physical sand table parameter acquisition module includes: The module initialization module is used to automatically activate the laser scanner and pressure sensor after startup, complete the equipment self-test, and ensure that the equipment is in normal working condition. The basic parameter scanning module for the sand table is used to enable the laser scanner to collect the overall dimensions of the physical sand table according to the preset path, calculate and generate the sand table scale, and locate the three-dimensional coordinates of each physical model in the sand table to establish a sand table model coordinate library. The user interaction location sensing module is used to locate the precise coordinates of the touch point by sensing the touch pressure signal based on the pressure sensor embedded in the bottom of the sand table when the user touches a specific area of ​​the sand table. The parameter integration and transmission module is used to integrate the sand table scale, model coordinates, and touch point coordinates into a standardized data packet, and send it to the central control module in real time via wired transmission, waiting for subsequent module calls.

3. The three-dimensional imaging adjustment system for sand table display according to claim 1, characterized in that, The AI ​​perspective prediction and adjustment module includes: The perspective database calling module is used to automatically load a preset scene-based perspective database to provide a data foundation for perspective prediction. The requirement and parameter receiving module is used to receive user requirement instructions and data from the physical sand table parameter acquisition module forwarded by the central control module; The optimal view prediction module is used to perform calculations based on user requirements and data from the central control module. First, it combines the coordinates of the sand table model to determine the spatial location of the target area; then, it matches similar scene views in the view database to calculate the optimal view parameters. The viewing angle drive adjustment module is used to send adjustment commands to the stepper motor drive unit so that the stepper motor drives the projector / holographic device to move according to the optimal viewing angle parameters, achieving 0.1° precision angle fine adjustment, while providing real-time feedback on the adjustment progress; The adjustment completion feedback module is used to send a view adjustment completion signal to the central control module after the device reaches the target view, and to display the current view parameters on the user terminal.

4. A three-dimensional imaging adjustment system for sand table display according to claim 1, characterized in that, The imaging sharpness linkage calibration module includes: The environment and parameter data acquisition module is used to monitor the light intensity of the exhibition space in real time; and to receive the scale data of the physical sand table from the physical sand table parameter acquisition module from the central control module. The imaging scale calibration module is used to automatically lock the output scale of the three-dimensional imaging based on the scale data of the sand table, and send a scale calibration completion signal to the central control module after calibration is completed. The sharpness parameter adjustment module is used to dynamically adjust imaging parameters based on illumination data; The real-time dynamic calibration module is used to continuously monitor the light intensity and the scale of the sand table, and to check the imaging scale and sharpness parameters every 5 seconds.

5. A three-dimensional imaging adjustment system for sand table display according to claim 1, characterized in that, The multi-user access control module includes: The user authentication module is used to initiate an operation request through the terminal and start the authentication process; and after successful authentication, it displays a list of operable sandbox areas. The adjustment permission application module allows users to select the target adjustment area from the area list and submit a permission application; The area permission verification and channel allocation module is used to verify the current permission status of a target area; if the area is free, it allocates an independent adjustment channel to the user; if the area is occupied, it displays that the area is occupied on the terminal, and real-time imaging can be viewed; at the same time, it can forcibly revoke the permissions of the occupied area. The operation permission control module enables authorized users to adjust the imaging of the target area, while also intercepting operation commands from unauthorized areas in real time. The permission status feedback and release module is used to provide feedback on the current permission information to the user terminal; and can manually release permissions after the user completes the operation, or automatically release permissions after they expire, restoring the area to an idle state for other users to apply for.

6. A three-dimensional imaging adjustment system for sand table display according to claim 1, characterized in that, The equipment status monitoring and early warning module includes: The full equipment parameter monitoring module is used to collect the status of key equipment in real time through current sensors, temperature sensors, and displacement sensors; The multi-level early warning mechanism module is used to set device parameter thresholds, and when an early warning is triggered, it can push pop-up windows and voice reminders to the user terminal through the central control module. The fault tracing and maintenance guidance module is used to automatically analyze the fault-related equipment after the warning is triggered and generate a visual maintenance guide, which supports administrators to export maintenance reports with one click.

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