Plane projection method and plane projection apparatus on surface of three-dimensional object

Abstract

The present invention relates to the technical field of three-dimensional plane projection. Specifically disclosed are a plane projection method and plane projection apparatus on a surface of a three-dimensional object. The method comprises: determining a projection distance of a projection apparatus; determining a projectable range on the basis of the projection distance; performing plane segmentation on a three-dimensional object for projection, so as to obtain a plurality of sub-planes; on the basis of the sub-planes and the projectable range, determining an arrangement mode of the projection apparatus; and arranging a plurality of projection apparatuses on the basis of the arrangement mode, and executing a screen projection operation on said three-dimensional object by means of the plurality of projection apparatuses. By improving a conventional screen projection method, a surface of a three-dimensional object is segmented, and projection is separately performed on different sub-planes, thereby ensuring sufficient projection clarity and satisfying actual requirements.

Description

A plane projection method for a three-dimensional object surface and a plane projection device TECHNICAL FIELD

[0001] The present application relates to the technical field of three-dimensional plane projection, in particular to a plane projection method for a three-dimensional object surface and a plane projection device for a three-dimensional object surface. BACKGROUND

[0002] With the continuous development of technology, people have higher and higher requirements for display technology. In traditional projection technology, including curtain plane projection, water curtain plane projection, etc., the above projection methods cannot meet the actual needs of people as people's appreciation level continues to improve.

[0003] The conventional curtain plane projection mainly sets up a plane curtain, and the curtain is preferably perpendicular to the projection device, and then the projection device projects an image onto the curtain to realize curtain plane projection. However, with the continuous improvement of people's appreciation level, people have higher requirements for the display effect of plane projection.

[0004] For example, screen projection on a three-dimensional object. Since there are different depths on the three-dimensional object, when the depth difference on the three-dimensional object is greater than a certain value, the traditional projection may have a ghost image, which leads to a decrease in user experience. Therefore, the traditional projection method cannot meet the actual needs, which brings great trouble to the display enterprise. SUMMARY

[0005] In order to overcome the above technical problems in the prior art, the present application provides a plane projection method for a three-dimensional object surface and a plane projection device. The traditional screen projection method is improved, the surface of the three-dimensional object is cut, and different sub-planes are projected respectively, so as to ensure sufficient projection clarity and meet the actual needs.

[0006] In order to achieve the above purpose, the present application provides a plane projection method for a three-dimensional object surface, which comprises the following steps: determining the projection distance of a projection device; determining the projectable range based on the projection distance; cutting the surface of a three-dimensional object to be projected to obtain a plurality of sub-planes; determining the layout mode of the projection device based on the sub-planes and the projectable range; and laying out a plurality of projection devices based on the layout mode, and performing a screen projection operation on the three-dimensional object to be projected by the plurality of projection devices.

[0007] Preferably, the planar cutting of the three-dimensional object to be projected comprises: obtaining surface depth information of the three-dimensional object to be projected; determining an observable depth difference of the projection device based on a preset definition requirement; and performing surface cutting on the three-dimensional object to be projected based on the observable depth difference and the surface depth information to obtain a plurality of sub-planes.

[0008] Preferably, the determination of the layout mode of the projection device based on the sub-planes and the projectable range comprises: obtaining a wired layout height threshold of the projection device; cutting the sub-planes based on the wired layout height threshold to generate cut sub-planes, the cut sub-planes comprising wired layout sub-planes and empty load layout sub-planes; generating a wired layout mode of the projection device based on the projectable range and the wired layout sub-planes; and generating an empty load layout mode of the projection device based on the projectable range and the empty load layout sub-planes.

[0009] Preferably, the layout of the plurality of projection devices based on the layout mode comprises: determining an installation position of a projection device based on the wired layout mode; wiring the corresponding projection device at the installation position; determining a hovering position of an unmanned aerial vehicle based on the empty load layout mode, the unmanned aerial vehicle being fixedly provided with a projection device; and hovering the corresponding projection device at the unmanned hovering position.

[0010] Preferably, the method further comprises: before hovering the projection device, determining whether a loaded hovering time of the unmanned aerial vehicle satisfies a required projection time; if the loaded hovering time does not satisfy the required projection time, configuring a tethered power line for the unmanned aerial vehicle to obtain a tethered unmanned aerial vehicle; and controlling the tethered unmanned aerial vehicle to hover the corresponding projection device at the unmanned hovering position.

[0011] Preferably, the method further comprises: if the loaded hovering time does not satisfy the required projection time, determining a closest position closest to the hovering position on a surface of the three-dimensional object to be projected; pre-configuring a wireless power output device at the closest position and pre-configuring a wireless power receiving device corresponding to the wireless power output device on the unmanned aerial vehicle; and hovering the corresponding projection device at the unmanned hovering position comprises: controlling the unmanned aerial vehicle to hover at the hovering position to hover the corresponding projection device; and controlling the wireless power receiving device to receive power transmitted from the wireless power output device to charge the unmanned aerial vehicle.

[0012] Correspondingly, the application also provides a plane projection device for a three-dimensional object surface, the device comprising: a distance determination unit for determining a projection distance of the projection device; a range determination unit for determining a projectable range based on the projection distance; a cutting unit for performing plane cutting on a three-dimensional object to be projected to obtain a plurality of sub-planes; a mode determination unit for determining a layout mode of the projection device based on the sub-planes and the projectable range; and a projection unit for laying out a plurality of projection devices based on the layout mode and performing a screen projection operation on the three-dimensional object to be projected by the plurality of projection devices.

[0013] Preferably, the cutting unit comprises: a depth acquisition module for acquiring surface depth information of the three-dimensional object to be projected; an interpolation determination module for determining an observable depth difference of the projection device based on a preset definition requirement; and a cutting module for performing surface cutting on the three-dimensional object to be projected based on the observable depth difference and the surface depth information to obtain a plurality of sub-planes.

[0014] Preferably, the mode determination unit is specifically configured to: acquire a wired layout height threshold of the projection device; perform cutting on the sub-planes based on the wired layout height threshold to generate cut sub-planes, the cut sub-planes comprising wired layout sub-planes and empty load layout sub-planes; generate a wired layout mode of the projection device based on the projectable range and the wired layout sub-planes; and generate an empty load layout mode of the projection device based on the projectable range and the empty load layout sub-planes.

[0015] Preferably, the projection unit is specifically configured to: determine an installation position of a projection device based on the wired layout mode; wire-lay a corresponding projection device at the installation position; determine a hovering position of an unmanned aerial vehicle based on the empty load layout mode, the unmanned aerial vehicle being fixedly provided with a projection device; and hover-lay a corresponding projection device at the unmanned hovering position.

[0016] Through the technical scheme provided by the application, the application has at least the following technical effects:

[0017] By performing depth analysis on the surface of a three-dimensional object and performing plane cutting on the three-dimensional object according to the analysis result to divide the surface into a plurality of sub-planes with similar depth information, the projection effect of the whole can have sufficient definition by respectively projecting each sub-plane, thereby greatly improving the viewing degree of projection on the surface of a three-dimensional object, improving user experience, and meeting actual needs.

[0018] Other features and advantages of the embodiments of the application will be described in detail in the subsequent specific implementation manner part. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of embodiments of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain embodiments of the application, but are not intended to limit the present application in any manner. In the drawings:

[0020] FIG. 1 is a flow chart of a specific implementation of a method for planar projection of a three-dimensional object surface according to an embodiment of the present application;

[0021] FIG. 2 is a flow chart of a specific implementation of planar cutting of a three-dimensional object to be projected according to an embodiment of the present application;

[0022] FIG. 3 is a flow chart of a specific implementation of determining a layout of a projection device according to an embodiment of the present application;

[0023] FIG. 4 is a structural schematic diagram of a projection device for a three-dimensional object surface according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The specific implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiments of the present application, and is not intended to limit the embodiments of the present application.

[0025] The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" means two or more, and therefore "multiple" in the embodiments of the present application can also be understood as "at least two". "And / or", which describes the association between the associated objects, means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / ", if not specially stated, generally represents an "or" relationship between the associated objects before and after. In addition, it should be understood that in the description of the embodiments of the present application, the terms "first", "second", etc. are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating or implying order.

[0026] Referring to FIG. 1, the present application provides a method for planar projection of a three-dimensional object surface, which comprises:

[0027] S10) determining a projection distance of a projection device;

[0028] S20) determining a projectable range based on the projection distance;

[0029] S30) planar cutting of a three-dimensional object to be projected to obtain a plurality of sub-planes;

[0030] S40) determining a layout of the projection device based on the sub-planes and the projectable range;

[0031] S50) arranging a plurality of projection devices based on the arrangement mode, and performing a screen projection operation for the three-dimensional object to be projected by the plurality of projection devices.

[0032] In a possible implementation, the projection distance of the projection device is determined first, specifically, the projection distance can be determined by a technician according to the optimal projection distance of the projection device. Then, the projectable range of the projection device is determined according to the projection distance, in which range the projection device has the optimal projection effect. Since the surface of the three-dimensional object has different depths, the projection effect of the planar projection will be affected by the clarity, therefore, the three-dimensional object to be projected needs to be cut into planes before projection, and a plurality of sub-screens are obtained.

[0033] Please refer to FIG. 2, in the embodiment of the present application, the three-dimensional object to be projected is cut into a plurality of sub-planes, including:

[0034] S31) obtaining the surface depth information of the three-dimensional object to be projected;

[0035] S32) determining the observable depth difference of the projection device based on the preset clarity requirement;

[0036] S33) cutting the surface of the three-dimensional object to be projected based on the observable depth difference and the surface depth information, and obtaining a plurality of sub-planes.

[0037] In a possible implementation, the surface depth information of the three-dimensional object to be projected is obtained first, in the embodiment of the present application, the surface of the three-dimensional object to be projected can be scanned by a laser scanning device, and corresponding three-dimensional point cloud data is generated, based on which the surface depth information of the three-dimensional object to be projected can be determined. Then, the surface depth information is analyzed according to the preset clarity requirement, in the specific implementation process, the technician can determine the influence of different projection distance differences on the projection clarity based on the technical data of the projection device on the basis of the standard projection distance, on the other hand, the technician can also determine the acceptable clarity range according to the sensitivity of the projection picture of the surface of the three-dimensional object to be projected to the position of the observer, and generate the preset clarity requirement based on the above influence and the acceptable clarity range.

[0038] At this time, the observable depth difference is further determined according to the above preset clarity requirement, the surface depth information is analyzed according to the observable depth difference, and the surface cutting operation is performed on the three-dimensional object to be projected according to the analysis result, so as to divide the surface into a plurality of sub-planes with similar depths. Then, the arrangement mode of the projection device is further determined.

[0039] In practical application, the traditional projection device is often set in a preset position in front of the projection screen through wired connection. However, when it is applied to a three-dimensional object to be projected, especially for a large three-dimensional object to be projected, for example, in the embodiment of the present application, when it is applied to project a bridge body, the traditional projection device setting mode cannot meet the actual demand when the height of the bridge body is too high.

[0040] To solve the above technical problems, referring to FIG. 3, in the embodiment of the present application, the setting mode of the projection device is determined based on the subplane and the projectable range, which includes:

[0041] S41) obtaining a wired setting height threshold of the projection device;

[0042] S42) cutting the subplane based on the wired setting height threshold to generate a cut subplane, the cut subplane including a wired setting subplane and an empty setting subplane;

[0043] S43) generating a wired setting mode of the projection device based on the projectable range and the wired setting subplane;

[0044] S44) generating an empty setting mode of the projection device based on the projectable range and the empty setting subplane.

[0045] In a possible implementation, first, a wired setting height threshold of the projection device is obtained, that is, within the height range of the wired setting height threshold, the projection device can be wiredly set, and above the height, the projection device cannot be wiredly set. According to the wired setting height threshold, the subplane is further cut to generate a cut subplane, which is divided into a wired setting subplane and an empty setting subplane, and the corresponding projection device setting mode is further generated.

[0046] For example, in the wired setting subplane, the corresponding wired setting mode is generated according to the projectable range of the projection device. Specifically, the wired setting mode includes the wired setting position of the projection device, and one projection device needs to be set at each wired setting position.

[0047] In actual implementation, the wired setting position can be a theoretical position, and the vicinity or surface of the three-dimensional object to be projected does not have sufficient setting conditions, that is, it is further needed to determine whether the wired setting position meets the actual setting position condition. If the actual setting position condition is not met, the projection range of the projection device needs to be determined again according to the actual setting position condition, and the setting number in the new projection range needs to be further determined to meet the actual demand.

[0048] Then, a sub-plane is laid empty, and a corresponding empty layout is generated according to a projectable range, the empty layout including hovering positions of the unmanned aerial vehicle, one unmanned aerial vehicle being arranged at each hovering position, and a projection device being fixedly arranged on the unmanned aerial vehicle. Finally, the projection device is laid according to the corresponding layout.

[0049] In the embodiment of the present application, the laying of the plurality of projection devices based on the layout includes: determining an installation position of the projection device based on the wired layout; laying the corresponding projection device at the installation position in a wired manner; determining a hovering position of the unmanned aerial vehicle based on the empty layout, the projection device being fixedly arranged on the unmanned aerial vehicle; and laying the corresponding projection device at the unmanned hovering position in a suspended manner.

[0050] In the embodiment of the present application, the combination of the wired projection and the aerial hovering projection can effectively solve the technical problem that the projection device cannot be used to reliably and accurately project a three-dimensional object due to the object being too large, and meet the actual needs.

[0051] In actual application, it is easy for those skilled in the art to know that the unmanned aerial vehicle can hover in the air to provide the function of laying the projection device in the air, but the hovering time of the unmanned aerial vehicle in the air is limited, especially when the unmanned aerial vehicle is loaded with a heavy projection device, the hovering time of the unmanned aerial vehicle in the air is greatly reduced, thereby either the projection time of the three-dimensional projection needs to be greatly compressed, or the unmanned aerial vehicle needs to be frequently controlled to land and charge, thereby greatly reducing the user experience.

[0052] To solve the above technical problem, in the embodiment of the present application, the method further includes: before laying the projection device in a suspended manner, judging whether the take-off hovering time of the unmanned aerial vehicle meets the demand projection time; if the take-off hovering time does not meet the demand projection time, configuring a tethered power line for the unmanned aerial vehicle to obtain a tethered unmanned aerial vehicle; and controlling the tethered unmanned aerial vehicle to lay the corresponding projection device at the unmanned hovering position in a suspended manner.

[0053] In a possible implementation, before laying the projection device in a suspended manner, whether the take-off hovering time of the unmanned aerial vehicle meets the demand projection time is judged, specifically, the take-off hovering time of the unmanned aerial vehicle is determined according to the power consumption rate of the unmanned aerial vehicle when the projection device is mounted, and it is further judged whether the take-off hovering time is greater than or equal to the actual projection time. For example, in an embodiment, if the take-off hovering time of the unmanned aerial vehicle does not meet the demand projection time, a tethered power line is configured for each unmanned aerial vehicle, that is, each unmanned aerial vehicle is connected with a power line to ensure sufficient endurance. Then, the tethered unmanned aerial vehicle is controlled to lay the corresponding projection device at the unmanned hovering position in a suspended manner.

[0054] In the embodiment of the present application, the power line is provided according to the actual flight capability of the unmanned aerial vehicle, so as to ensure sufficient endurance capability on the basis of providing effective projection device layout capability, thereby solving the above technical problems and meeting the actual needs.

[0055] However, in actual application, the environment where part of the three-dimensional object to be projected is relatively complex, for example, in the embodiment, when applied to the bottom of a bridge, due to a large number of random air flows at the bottom of the bridge, especially at night, the air flow at the bottom of the bridge is more intense, thereby on the one hand, the flight attitude of the unmanned aerial vehicle is affected; on the other hand, the disturbance of the tethered power line also causes further superimposed effects on the flight attitude of the unmanned aerial vehicle, greatly reducing the attitude stability of the unmanned aerial vehicle, causing the projection picture to shake, and reducing the user experience.

[0056] In order to solve the above technical problems, in the embodiment of the present application, the method further comprises: if the take-off and landing hovering time does not meet the demand projection time, determining the closest position closest to the hovering position on the surface of the three-dimensional object to be projected; pre-configuring a wireless power output device at the closest position, and pre-configuring a wireless power receiving device corresponding to the wireless power output device on the unmanned aerial vehicle; the step of suspending the corresponding projection device at the unmanned hovering position comprises: controlling the unmanned aerial vehicle to hover at the hovering position to suspend the corresponding projection device; and controlling the wireless power receiving device to receive the power transmitted from the wireless power output device to charge the unmanned aerial vehicle.

[0057] In a possible implementation, if the take-off and landing hovering time of the unmanned aerial vehicle is less than the actual projection time required, the closest position closest to the hovering position of the unmanned aerial vehicle is determined on the surface of the three-dimensional object to be projected in advance, and a wireless power output device is arranged at the closest position, for example, the wireless power output device is the transmitting end of a wireless charger, and a wireless power receiving device is arranged on the unmanned aerial vehicle, for example, the wireless power receiving device is the receiving end of the wireless charger.

[0058] In application, on the one hand, the unmanned aerial vehicle is controlled to hover at the hovering position to perform the layout work of the projection device; on the other hand, the receiving end of the wireless charger continuously receives the wireless power output by the output end of the wireless charger to perform real-time charging operation on the unmanned aerial vehicle, thereby ensuring sufficient endurance capability.

[0059] In the embodiment of the present application, by pre-setting a wireless charger on the surface of the three-dimensional object to be projected, the unmanned aerial vehicle can be charged in real time during use, thereby maintaining sufficient endurance ability against the disturbance of complex environment, meeting the actual projection demand and improving the user experience.

[0060] The plane projection device for the surface of a three-dimensional object provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

[0061] Referring to FIG. 4, based on the same inventive concept, the embodiment of the present application provides a plane projection device for the surface of a three-dimensional object, which comprises: a distance determination unit for determining the projection distance of a projection device; a range determination unit for determining a projectable range based on the projection distance; a cutting unit for performing plane cutting on a three-dimensional object to be projected to obtain a plurality of sub-planes; a mode determination unit for determining the layout mode of the projection device based on the sub-planes and the projectable range; and a projection unit for laying out a plurality of projection devices based on the layout mode and performing screen projection operation on the three-dimensional object to be projected by the plurality of projection devices.

[0062] In the embodiment of the present application, the cutting unit comprises: a depth acquisition module for acquiring surface depth information of the three-dimensional object to be projected; an interpolation determination module for determining the observable depth difference of the projection device based on a preset definition requirement; and a cutting module for performing surface cutting on the three-dimensional object to be projected based on the observable depth difference and the surface depth information to obtain a plurality of sub-planes.

[0063] In the embodiment of the present application, the mode determination unit is specifically configured to: acquire a wired layout height threshold of the projection device; cut the sub-planes based on the wired layout height threshold to generate cut sub-planes, wherein the cut sub-planes comprise wired layout sub-planes and empty load layout sub-planes; generate a wired layout mode of the projection device based on the projectable range and the wired layout sub-planes; and generate an empty load layout mode of the projection device based on the projectable range and the empty load layout sub-planes.

[0064] In the embodiment of the present application, the projection unit is specifically configured to: determine the installation position of the projection device based on the wired layout mode; wire layout the corresponding projection device at the installation position; determine the hovering position of the unmanned aerial vehicle based on the empty load layout mode, wherein the projection device is fixedly arranged on the unmanned aerial vehicle; and hover layout the corresponding projection device at the unmanned hovering position.

[0065] The optional implementation of the embodiments of the present application is described in detail above in combination with the drawings, but the embodiments of the present application are not limited to the specific details in the above implementation. Within the technical concept of the embodiments of the present application, the technical solutions of the embodiments of the present application can be variously and simply modified, and all the simple modifications belong to the protection scope of the embodiments of the present application.

[0066] In addition, it should be noted that each specific technical feature described in the above specific implementation can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations are not described again in the embodiments of the present application.

[0067] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiment methods can be completed by using a program instructing related hardware. The program is stored in a storage medium and includes a plurality of instructions for enabling a single-chip microcomputer, a chip or a processor to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk and various program code storage media.

[0068] In addition, the various different implementations of the embodiments of the present application can also be combined in any manner, as long as they do not contradict the idea of the embodiments of the present application, and they should also be considered as disclosed by the embodiments of the present application.

Claims

1. A method for planar projection of a surface of a three-dimensional object, characterized in that, The method comprises: determining a projection distance of a projection device; determining a projectable range based on the projection distance; plane cutting a three-dimensional object to be projected to obtain a plurality of sub-planes; determining a layout mode of the projection device based on the sub-planes and the projectable range; based on the layout mode, laying out a plurality of projection devices, and performing a screen projection operation on the three-dimensional object to be projected by the plurality of projection devices.

2. The method of claim 1, wherein, The plane cutting of the three-dimensional object to be projected to obtain a plurality of sub-planes comprises: obtaining surface depth information of the three-dimensional object to be projected; determining a viewable depth difference of the projection device based on a preset definition requirement; based on the viewable depth difference and the surface depth information, surface cutting the three-dimensional object to be projected to obtain a plurality of sub-planes.

3. The method of claim 1, wherein, The determination of the layout mode of the projection device based on the sub-planes and the projectable range comprises: obtaining a wired layout height threshold of the projection device; based on the wired layout height threshold, cutting the sub-planes to generate cut sub-planes, the cut sub-planes comprising wired layout sub-planes and empty load layout sub-planes; generating a wired layout mode of the projection device based on the projectable range and the wired layout sub-planes; generating an empty load layout mode of the projection device based on the projectable range and the empty load layout sub-planes.

4. The method of claim 3, wherein, The laying out of a plurality of projection devices based on the layout mode comprises: determining an installation position of a projection device based on the wired layout mode; wiredly laying out a corresponding projection device at the installation position; determining a hovering position of an unmanned aerial vehicle based on the empty load layout mode, the unmanned aerial vehicle being fixedly provided with a projection device; hoveringly laying out a corresponding projection device at the unmanned hovering position.

5. The method of claim 4, wherein, The method further comprises: before hoveringly laying out the projection device, judging whether a loaded hovering time of the unmanned aerial vehicle meets a required projection time; if the loaded hovering time does not meet the required projection time, configuring a tethered power line for the unmanned aerial vehicle to obtain a tethered unmanned aerial vehicle; controlling the tethered unmanned aerial vehicle to hoverly lay out a corresponding projection device at the unmanned hovering position.

6. The method of claim 5, wherein, The method further comprises: if the loaded hovering time does not meet the required projection time, determining a closest position closest to the hovering position on a surface of the three-dimensional object to be projected; pre-configuring a wireless power output device at the closest position and pre-configuring a wireless power receiving device corresponding to the wireless power output device on the unmanned aerial vehicle; the hoveringly laying out of a corresponding projection device at the unmanned hovering position comprises: controlling the unmanned aerial vehicle to hover at the hovering position to hoverly lay out a corresponding projection device; and controlling the wireless power receiving device to receive power transmitted from the wireless power output device to charge the unmanned aerial vehicle.

7. A device for planar projection of a surface of a three-dimensional object, characterized in that The device comprises: a distance determination unit configured to determine a projection distance of a projection device; a range determination unit configured to determine a projectable range based on the projection distance; a cutting unit configured to plane cut a three-dimensional object to be projected to obtain a plurality of sub-planes; A mode determination unit is used to determine the layout mode of the projection device based on the subplane and the projectable range; The projection unit is used to deploy multiple projection devices based on the aforementioned layout method, and to perform screen projection operations on the three-dimensional object to be projected through the multiple projection devices.

8. The apparatus of claim 7, wherein, The cutting unit includes: The depth acquisition module is used to acquire the surface depth information of the three-dimensional object to be projected; An interpolation determination module is used to determine the viewing depth difference of the projection device based on a preset sharpness requirement. The cutting module is used to cut the surface of the three-dimensional object to be projected based on the observable depth difference and the surface depth information to obtain multiple sub-planes.

9. The apparatus of claim 7, wherein, The method determination unit is specifically used for: Obtain the wired deployment height threshold of the projection device; The subplane is cut based on the wired deployment height threshold to generate a cut subplane, which includes a wired deployment subplane and an unloaded deployment subplane. The wired layout of the projection device is generated based on the projectable range and the wired layout subplane. The unloaded layout mode of the projection device is generated based on the projectable range and the unloaded layout subplane.

10. The apparatus of claim 7, wherein, The projection unit is specifically used for: The installation location of the projection device is determined based on the aforementioned wired deployment method; A corresponding projection device is wired and installed at the installation location; The hovering position of the unmanned aerial vehicle is determined based on the aforementioned unloaded deployment method, and a projection device is fixedly installed on the unmanned aerial vehicle. A corresponding projection device is suspended in the air at the location where no one is hovering.

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