A method and system for preparing a topography-reduced celestial model

Abstract

This invention belongs to the field of celestial model manufacturing and geographic information technology, and relates to a method and system for preparing a terrain-reconstruction-style celestial model. It includes: acquiring elevation data and surface texture image data of the target celestial body; performing regional stitching and spatial grid alignment on the elevation data to construct a three-dimensional geometric topology; performing proportional scaling modeling to generate a three-dimensional digital mesh model; mapping the surface texture image data to the surface spatial coordinates of the mesh model; extracting the geometric boundary data of the three-dimensional digital mesh model and converting it into three-dimensional printing slice data for integrated printing to obtain a solid blank; polishing the outer surface; mapping the surface texture image data to the three-dimensional physical surface of the solid blank according to the surface spatial coordinate mapping relationship; and applying color to the surface of the solid blank. Unlike traditional simplified artistic models, this method offers high precision, no deformation, and no distortion.

Description

Technical Field

[0001] This invention belongs to the field of celestial model manufacturing and geographic information technology, and relates to a method and system for preparing a terrain-reconstruction celestial model. Background Technology

[0002] With the increasing demand for astronomical popularization and geography teaching, celestial models and globes have been widely used in daily teaching and science popularization exhibitions. However, currently available celestial models and globes generally suffer from the following technical pitfalls and defects in reproducing the real celestial landforms and surface features: 1) Incomplete landform reproduction and low accuracy in planetary feature reproduction. Traditional globes or planetary models mostly use a combination of printed spherical stickers and smooth plastic spheres, resulting in a completely flattened appearance of the ocean areas, ignoring the deep and undulating topographical details of the real seabed; at the same time, due to the lack of high-precision elevation data, the topographical undulations on the model surface are often excessively simplified artistically, leading to distortion of key planetary features (such as lunar craters, mountain terrain, etc.) and model scale deformation. 2) Complex manufacturing process and high pollution. Existing celestial models often use plastic injection molding, which generates significant environmental pollution during production and subsequent painting, making it difficult to meet the requirements of green manufacturing. 3) Poor alignment accuracy between texture images and physical surfaces. Traditional coloring and pasting methods lack a coordinate mapping mechanism between images and physical surfaces, which can easily lead to misalignment of surface contours and color textures in physical space. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a method for preparing a terrain-reconstruction-based celestial model.

[0004] The objective of this invention can be achieved through the following technical solution: a method for preparing a topographically reconstructed celestial model, comprising: The elevation detection data and surface texture image data of the target celestial body are acquired, and the elevation detection data are spliced ​​into regions and aligned with spatial grids to construct the three-dimensional geometric topology of the target celestial body. Based on the three-dimensional geometric topology, a three-dimensional digital mesh model of the target celestial body is generated by scaling the model proportionally, and the position information of the surface texture image data is mapped to the surface spatial coordinates of the three-dimensional digital mesh model. Extract the geometric boundary data of the three-dimensional digital mesh model and convert it into three-dimensional printing slice data. Based on the three-dimensional printing slice data, use a 3D printer to perform integrated printing in an additive stacking manner to obtain a solid blank of the target celestial body model that matches the geometric outer contour of the three-dimensional digital mesh model. The outer surface of the solid blank is polished, and the surface texture image data is mapped to the three-dimensional physical surface of the solid blank according to the surface space coordinate coincidence mapping relationship. The coloring operation is performed on the surface of the solid blank according to the mapping result.

[0005] As an optional embodiment of the present invention, the target celestial body includes the Earth, and the three-dimensional digital mesh model includes a model of the Earth's land region and a model of the Earth's ocean region. In the solid blank of the Earth model, the Earth land area model is printed to form a land entity containing plains, plateaus, mountains, hills and basins with undulating structures. The Earth ocean area model is printed based on seabed elevation data to form a three-dimensional solid landform with depression depth. The three-dimensional solid landform of the seabed includes continental shelf, continental slope, deep sea plain, mid-ocean ridge, trench and mid-ocean ridge, and the three-dimensional solid landform of the seabed and the land entity have a continuous slope transition at the edge boundary.

[0006] As an optional embodiment of the present invention 3. The method according to claim 1, wherein the target celestial body includes the Moon, and the three-dimensional digital grid model is based on lunar surface elevation data, and a crater grid depression model with different sizes, depths and spatial distributions is established on the grid surface; During the process of printing the solid blank of the lunar model using a 3D printer, a three-dimensional crater groove structure corresponding to the crater grid recess model is generated.

[0007] As an optional embodiment of the present invention, a coloring operation is performed on the surface of the solid blank, including: Based on the color data of the reflectance spectrum of the target celestial body, a base color layer is sprayed onto the surface of the solid blank to form a base color layer; The mapping result includes depth or height numerical information corresponding to the undulation features. Based on the mapping result, a texture refinement layer is formed on the base layer by applying a gradient of light and dark contrast. A transparent, wear-resistant, and cured protective layer that is antistatic and light-proof is sprayed onto the surface of the textured finishing layer.

[0008] As an optional embodiment of the present invention, when the target celestial body is a solar system celestial body other than Earth and the Moon, the elevation detection data of the target celestial body is subjected to low-pass filtering and smoothing processing to preserve the outline geometric features of the target celestial body.

[0009] As an optional embodiment of the present invention, the 3D printer uses environmentally friendly resin or biodegradable material as printing consumables, and the thickness of the stacked layer formed by single-layer printing ranges from 0.2mm to 0.5mm.

[0010] This invention also proposes a system for preparing a topographically reconstructed celestial model, comprising: The first unit is used to acquire elevation detection data and surface texture image data of the target celestial body, perform regional stitching and spatial grid alignment on the elevation detection data, and construct the three-dimensional geometric topology of the target celestial body. The second unit is used to perform proportional scaling modeling based on the three-dimensional geometric topology, generate a three-dimensional digital mesh model of the target celestial body, and map the position information of the surface texture image data to the three-dimensional digital mesh model to coincide with the surface space coordinates. The third unit is used to extract the geometric boundary data of the three-dimensional digital mesh model and convert it into three-dimensional printing slice data. Based on the three-dimensional printing slice data, the 3D printer is used to perform integrated printing in an additive stacking manner to obtain a solid blank of the target celestial model that matches the geometric outer contour of the three-dimensional digital mesh model. The fourth unit is used to polish the outer surface of the solid blank, map the surface texture image data to the three-dimensional physical surface of the solid blank according to the surface space coordinate coincidence mapping relationship, and perform coloring operation on the surface of the solid blank according to the mapping result.

[0011] As an optional embodiment of the present invention, the target celestial body includes the Earth, and the three-dimensional digital mesh model includes a model of the Earth's land region and a model of the Earth's ocean region. In the solid blank of the Earth model, the Earth land area model is printed to form a land entity containing plains, plateaus, mountains and basins with undulating structures. The Earth ocean area model is printed based on seabed elevation data to form a three-dimensional seabed landform with depression depth. The three-dimensional seabed landform includes continental shelf, continental slope, deep-sea plain, mid-ocean ridge, trench and mid-ocean ridge, and the three-dimensional seabed landform and the land entity have a continuous slope transition at the edge boundary.

[0012] As an optional embodiment of the present invention, the target celestial body includes the moon, and the three-dimensional digital grid model is based on lunar surface elevation detection data, and a crater grid depression model with different sizes, depths and spatial distributions is established on the grid surface. During the process of printing the solid blank of the lunar model using a 3D printer, a three-dimensional crater groove structure corresponding to the crater grid recess model is generated.

[0013] The present invention also provides an electronic device, comprising: processor; Memory used to store processor-executable instructions; The processor is configured to implement the above-described method for preparing a terrain-reconstruction celestial model when executing executable instructions.

[0014] Compared with existing technologies, this invention achieves precise alignment between spatial topography and surface texture, effectively avoiding the phenomenon of "topographical undulations and color textures not coinciding" caused by manual painting, sticker stretching, or mechanical alignment deviations in traditional manufacturing processes. This ensures that the undulation features on the physical model and the true color distribution on the image maintain absolute spatial consistency. By performing "regional stitching and spatial grid alignment" on elevation data before modeling, a smooth and connected three-dimensional geometric topology is constructed. Based on this, proportional scaling modeling is performed, enabling the final physical blank to realistically and systematically reflect the natural macroscopic structure of the target celestial body, avoiding geographical feature distortion caused by artistic simplification. In the printing stage, only geometric boundary data without color interference is extracted for integrated additive manufacturing, shortening the slicing calculation time and improving the mechanical structural strength of the 3D printed blank. Minor sanding after forming removes the layered stepped textures, reducing physical micro-roughness without destroying the macroscopic topographic features of the celestial body. This provides a smooth and well-adhesive base structure for subsequent high-quality, fine mapping and coloring. Attached Figure Description

[0015] Figure 1 This is a flowchart of the method for preparing a landform-reconstruction celestial model according to an embodiment of the present invention; Figure 2 This is a diagram of the Earth model after the surface space coordinates are superimposed and mapped according to an embodiment of the present invention; Figure 3 This is a lunar model diagram after the surface space coordinates are superimposed and mapped according to an embodiment of the present invention. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] Example 1 Based on the technical problems highlighted in the background, this embodiment proposes a method for preparing a terrain-reconstruction-based celestial model, such as... Figure 1 As shown, it includes: S1, acquire elevation detection data and surface texture image data of the target celestial body, perform regional stitching and spatial grid alignment on the elevation detection data, and construct the three-dimensional geometric topology of the target celestial body; S2, based on the three-dimensional geometric topology, perform proportional scaling modeling to generate a three-dimensional digital mesh model of the target celestial body, and map the position information of the surface texture image data to the three-dimensional digital mesh model to coincide with the surface space coordinates; S3, extract the geometric boundary data of the three-dimensional digital mesh model and convert it into three-dimensional printing slice data. Based on the three-dimensional printing slice data, use a 3D printer to perform integrated printing in an additive stacking manner to obtain a solid blank of the target celestial model that matches the geometric outer contour of the three-dimensional digital mesh model. S4, the outer surface of the solid blank is polished, and the surface texture image data is mapped to the three-dimensional physical surface of the solid blank according to the surface space coordinate coincidence mapping relationship. The coloring operation is performed on the surface of the solid blank according to the mapping result.

[0018] Elevation data and surface texture image data of the target celestial body are acquired through a configured data communication interface. In this embodiment, the elevation data originates from publicly available laser altimeter data from various aerospace agencies, such as LOLA (LunarOrbiter Laser Altimeter) data for the Moon and MOLA (MarsOrbiter Laser Altimeter) data for Mars. The surface texture image data consists of high-resolution satellite / probe remote sensing images or synthetic true-color still images. Since the elevation data exists in the form of orbital strips or regional blocks, elevation data from adjacent regions can be seamlessly stitched together using a geographic coordinate system reprojection algorithm. Simultaneously, bilinear interpolation or cubic convolution interpolation algorithms are used to realign the pixel grid, eliminating errors at block junctions. Based on this, a three-dimensional geometric topology structure composed of numerous triangular faces and vertices is constructed.

[0019] Based on the constructed 3D geometric topology, a proportionally scaled model is created according to the target model size. Using computer 3D modeling software, a 3D digital mesh model of the target celestial body for physical fabrication is generated. To "attach" the 2D surface texture image to the 3D digital mesh model, the positional information of the surface texture image data is mapped to the surface spatial coordinates of the 3D digital mesh model, establishing a correspondence between the texture and the model surface. The geometric outer boundary data of the 3D digital mesh model is extracted. At this point, the texture color data is stripped, and the pure 3D topology data is output as a mesh format. The mesh format is imported into slicing software for physical layering and slicing, generating 3D printing slice data. Based on this 3D printing slice data, a 3D printer is controlled to generate the solid using an additive manufacturing process. The printer cures resin layer by layer, ultimately obtaining an unpainted celestial body model blank with a geometric outer contour consistent with the 3D digital mesh model. The surface of the 3D printed blank will retain layered textures; therefore, the outer surface of the blank is alternately sanded with coarse and fine sanding to remove printing residues and smooth the surface. Based on the aforementioned surface space coordinate coincidence mapping relationship, the surface texture image data is mapped onto the three-dimensional physical surface of the solid blank, and coloring is performed on the surface of the solid blank according to the mapping result to complete the model preparation.

[0020] In cases where the target celestial body is "Earth", such as Figure 2 As shown, the three-dimensional digital mesh model comprises a land region model and an ocean region model of the Earth. In the printed Earth model prototype, the land portion, based on elevation data, is printed to form a land entity containing undulating landforms such as plains, plateaus, mountains, hills, and basins. The ocean region, based on seabed elevation data, is printed to form a three-dimensional seabed landform with depressions and depths, including continental shelves, continental slopes, deep-sea plains, mid-ocean ridges, trenches, and mid-ocean ridges. During the fabrication process, a continuous slope transition is ensured between the seabed landform and the land entity at the edge boundaries to achieve a natural connection between the landforms.

[0021] For cases where the target celestial body is the "Moon", such as Figure 3 As shown, the three-dimensional digital mesh model is based on lunar surface elevation data, creating a crater mesh depression model with different sizes, depths, and spatial distributions on the mesh surface. During the process of printing the lunar model's solid blank using a 3D printer, the sliced ​​data is processed to create a three-dimensional crater groove structure on the surface of the printed solid blank that corresponds to the crater mesh depression model, thereby reproducing the impact crater features of the lunar surface.

[0022] The coloring process on the solid model body includes spraying a base color layer, applying a texture refinement layer, and spraying a curing and protective layer. Specifically, based on the reflectance spectrum color data of the target celestial body, a base color layer is sprayed onto the solid model body surface, serving as the basis for subsequent textures. The mapping result contains depth or height numerical information corresponding to the undulation features. Based on this numerical information, a texture refinement layer is formed on the base color layer using a gradient of light and shadow contrast. The contrast of light and shadow enhances the visual effect of the terrain undulations. A transparent, wear-resistant, and anti-static curing and protective layer is sprayed onto the surface of the texture refinement layer to protect the coloring effect and increase the model's durability.

[0023] When the target celestial body is a solar system object other than Earth and the Moon, in order to better restore its outline features, the elevation detection data of the target celestial body is subjected to low-pass filtering and smoothing before constructing the three-dimensional geometric topology. This removes noise from the data, preserves the macroscopic outline geometric features of the target celestial body, and ensures that the printed model has an accurate shape.

[0024] During the fabrication process, the 3D printer uses environmentally friendly resins or biodegradable materials as printing consumables to meet environmental protection requirements. Simultaneously, the stacking layer thickness for single-layer printing is set to a range of 0.2mm to 0.5mm to balance printing accuracy and efficiency, ensuring that the solid blank accurately reproduces the geometric outline of the celestial body.

[0025] This method achieves precise alignment between spatial topography and surface texture, effectively avoiding the phenomenon of "mismatch between topographical undulations and color textures" caused by manual painting, sticker stretching, or mechanical alignment deviations in traditional manufacturing processes. It ensures that the undulation features on the physical model and the true color distribution in the image maintain absolute spatial consistency. By performing "regional stitching and spatial grid alignment" on elevation data before modeling, a smooth and connected 3D geometric topology is constructed. Based on this, proportional scaling modeling is performed, enabling the final solid blank to realistically and systematically reflect the natural macroscopic structure of the target celestial body, avoiding geographical feature distortion caused by artistic simplification. In the printing stage, only geometric boundary data without color interference is extracted for integrated additive manufacturing, shortening the slicing calculation time and improving the mechanical structural strength of the 3D printed blank. Minor sanding after forming removes the layered stepped textures, reducing physical micro-roughness without destroying the macroscopic topographic features of the celestial body. This provides a smooth and well-adhesive base structure for subsequent high-quality, fine mapping and coloring.

[0026] Example 2 Based on the principles described in Example 1, a system for preparing a terrain-reconstruction celestial model is also proposed, comprising: The first unit is used to acquire elevation detection data and surface texture image data of the target celestial body, perform regional stitching and spatial grid alignment on the elevation detection data, and construct the three-dimensional geometric topology of the target celestial body. The second unit is used to perform proportional scaling modeling based on the three-dimensional geometric topology, generate a three-dimensional digital mesh model of the target celestial body, and map the position information of the surface texture image data to the three-dimensional digital mesh model to coincide with the surface space coordinates. The third unit is used to extract the geometric boundary data of the three-dimensional digital mesh model and convert it into three-dimensional printing slice data. Based on the three-dimensional printing slice data, the 3D printer is used to perform integrated printing in an additive stacking manner to obtain a solid blank of the target celestial model that matches the geometric outer contour of the three-dimensional digital mesh model. The fourth unit is used to polish the outer surface of the solid blank, map the surface texture image data to the three-dimensional physical surface of the solid blank according to the surface space coordinate coincidence mapping relationship, and perform coloring operation on the surface of the solid blank according to the mapping result.

[0027] Preferably, the target celestial body includes the Earth, and the three-dimensional digital mesh model includes a model of the Earth's land area and a model of the Earth's ocean area; In the solid blank of the Earth model, the Earth land area model is printed to form a land entity containing plains, plateaus, mountains and basins with undulating structures. The Earth ocean area model is printed based on seabed elevation data to form a three-dimensional seabed landform with depression depth. The three-dimensional seabed landform includes continental shelf, continental slope, deep-sea plain, mid-ocean ridge, trench and mid-ocean ridge, and the three-dimensional seabed landform and the land entity have a continuous slope transition at the edge boundary.

[0028] Preferably, the target celestial body includes the Moon, and the three-dimensional digital mesh model is based on lunar surface elevation data, establishing a crater mesh depression model with different sizes, depths and spatial distributions on the mesh surface; During the process of printing the solid blank of the lunar model using a 3D printer, a three-dimensional crater groove structure corresponding to the crater grid recess model is generated.

[0029] Example 3 Furthermore, an electronic device is proposed, comprising: processor; Memory used to store processor-executable instructions; The processor is configured to implement, when executing executable instructions, a method for preparing a topographical reconstruction celestial model according to Embodiment 1.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0031] Furthermore, it should be noted that the use of terms such as "first," "second," and "a" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A method for preparing a topographically reconstructed celestial model, characterized in that, include: The elevation detection data and surface texture image data of the target celestial body are acquired, and the elevation detection data are spliced ​​into regions and aligned with spatial grids to construct the three-dimensional geometric topology of the target celestial body. Based on the three-dimensional geometric topology, a three-dimensional digital mesh model of the target celestial body is generated by scaling the model proportionally, and the position information of the surface texture image data is mapped to the surface spatial coordinates of the three-dimensional digital mesh model. Extract the geometric boundary data of the three-dimensional digital mesh model and convert it into three-dimensional printing slice data. Based on the three-dimensional printing slice data, use a 3D printer to perform integrated printing in an additive stacking manner to obtain a solid blank of the target celestial body model that matches the geometric outer contour of the three-dimensional digital mesh model. The outer surface of the solid blank is polished, and the surface texture image data is mapped to the three-dimensional physical surface of the solid blank according to the surface space coordinate coincidence mapping relationship. The coloring operation is performed on the surface of the solid blank according to the mapping result.

2. The method according to claim 1, characterized in that, The target celestial body includes the Earth, and the three-dimensional digital mesh model includes a model of the Earth's land area and a model of the Earth's ocean area. In the solid blank of the Earth model, the Earth land area model is printed to form a land entity containing plains, plateaus, mountains, hills and basins with undulating structures. The Earth ocean area model is printed based on seabed elevation data to form a three-dimensional solid landform with depression depth. The three-dimensional solid landform of the seabed includes continental shelf, continental slope, deep sea plain, mid-ocean ridge, trench and mid-ocean ridge, and the three-dimensional solid landform of the seabed and the land entity have a continuous slope transition at the edge boundary.

3. The method according to claim 1, characterized in that, The target celestial body includes the Moon. The three-dimensional digital grid model is based on lunar surface elevation detection data, and a model of meteorite crater grid depressions of different sizes, depths and spatial distributions is established on the grid surface. During the process of printing the solid blank of the lunar model using a 3D printer, a three-dimensional crater groove structure corresponding to the crater grid recess model is generated.

4. The method according to claim 1, characterized in that, The coloring operation on the surface of the solid blank includes: Based on the color data of the reflectance spectrum of the target celestial body, a base color layer is sprayed onto the surface of the solid blank to form a base color layer; The mapping result includes depth or height numerical information corresponding to the undulation features. Based on the mapping result, a texture refinement layer is formed on the base layer by applying a gradient of light and dark contrast. A transparent, wear-resistant, and cured protective layer that is antistatic and light-proof is sprayed onto the surface of the textured finishing layer.

5. The method according to claim 1, characterized in that, When the target celestial body is a solar system celestial body other than Earth and the Moon, the elevation detection data of the target celestial body is subjected to low-pass filtering and smoothing processing to preserve the outline geometric features of the target celestial body.

6. The method according to claim 1, characterized in that, The 3D printer uses environmentally friendly resin or biodegradable materials as printing consumables, and the thickness of the stacked layers formed by single-layer printing ranges from 0.2mm to 0.5mm.

7. A system for preparing a topographically reconstructed celestial model, characterized in that, include: The first unit is used to acquire elevation detection data and surface texture image data of the target celestial body, perform regional stitching and spatial grid alignment on the elevation detection data, and construct the three-dimensional geometric topology of the target celestial body. The second unit is used to perform proportional scaling modeling based on the three-dimensional geometric topology, generate a three-dimensional digital mesh model of the target celestial body, and map the position information of the surface texture image data to the three-dimensional digital mesh model to coincide with the surface space coordinates. The third unit is used to extract the geometric boundary data of the three-dimensional digital mesh model and convert it into three-dimensional printing slice data. Based on the three-dimensional printing slice data, the 3D printer is used to perform integrated printing in an additive stacking manner to obtain a solid blank of the target celestial model that matches the geometric outer contour of the three-dimensional digital mesh model. The fourth unit is used to polish the outer surface of the solid blank, map the surface texture image data to the three-dimensional physical surface of the solid blank according to the surface space coordinate coincidence mapping relationship, and perform coloring operation on the surface of the solid blank according to the mapping result.

8. The system according to claim 7, characterized in that, The target celestial body includes the Earth, and the three-dimensional digital mesh model includes a model of the Earth's land area and a model of the Earth's ocean area. In the solid blank of the Earth model, the Earth land area model is printed to form a land entity containing plains, plateaus, mountains and basins with undulating structures. The Earth ocean area model is printed based on seabed elevation data to form a three-dimensional seabed landform with depression depth. The three-dimensional seabed landform includes continental shelf, continental slope, deep-sea plain, mid-ocean ridge, trench and mid-ocean ridge, and the three-dimensional seabed landform and the land entity have a continuous slope transition at the edge boundary.

9. The system according to claim 7, characterized in that, The target celestial body includes the Moon. The three-dimensional digital grid model is based on lunar surface elevation detection data, and a model of meteorite crater grid depressions of different sizes, depths and spatial distributions is established on the grid surface. During the process of printing the solid blank of the lunar model using a 3D printer, a three-dimensional crater groove structure corresponding to the crater grid recess model is generated.

10. An electronic device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to implement the method for preparing a landform-reconstruction celestial model as described in any one of claims 1-6 when executing executable instructions.

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