JP7449897B2 - 3D modeling support device, 3D modeling support method, and 3D modeling support program - Google Patents

Description

The present invention relates to a three-dimensional modeling support device, a three-dimensional modeling support method, and a three-dimensional modeling support program for generating a three-dimensional, highly accurate view from a point of interest.

Map tools such as Google Earth (registered trademark) are public data that includes a wide range of data and is updated as appropriate, and is effective for use depending on the purpose. For example, Patent Document 1 discloses a technology that generates daytime and nighttime scenery information that can be seen from the window of a property, and displays images and videos of the view that can actually be seen from the outside of the building from a viewpoint inside the building. The scenery information is obtained from a scenery generation service on the Internet.

Further, Patent Document 2 discloses an architectural design simulation device that can automatically generate images from a plurality of viewpoints inside or outside an apartment. By using this device and specifying a viewpoint based on the extraction results, it is possible to know in advance the view from the room you wish to purchase through simulation.

JP2018-81548A JP2002-318821A Special table 2018-522297 publication Special table 2018-517952 publication

However, data from such map tools has no correlation with distance and has low accuracy as data representing shape. On the other hand, as disclosed in Patent Documents 3 and 4, the existence of high-precision three-dimensional models such as BIM (Building Information Modeling), which creates a high-precision three-dimensional digital model of a building, etc. on a computer. It has been known.

Therefore, the present invention provides 3D modeling support that enables effective and efficient various simulations by combining the basic map data of a map tool that updates a wide range of data as appropriate with a high-precision 3D model. The purpose is to provide an apparatus, a three-dimensional modeling support method, and a three-dimensional modeling support program.

In order to achieve the above object, the 3D modeling support device of the present invention is a 3D modeling support device for generating a 3D high-precision view from a point under consideration. A basic data acquisition unit that acquires three-dimensional basic map data before arranging the dimensional model, and generates judgment criteria for extracting replacement objects to be replaced with a high-precision three-dimensional model around the consideration point. an extraction criterion generation section; and a display control section that displays the judgment criterion generated by the extraction criterion generation section superimposed on the basic map data; It is characterized by being set for the scenic range.

Here, the criterion can be configured by a foreground extraction section formed in a cylindrical shape and a middle ground extraction section formed in an inverted conical shape. Further, the configuration may include a replacement object specifying section that determines the replacement object, and a position adjustment section that aligns a high-precision three-dimensional model of the replacement object with the basic map data. .

In addition, the invention of the 3D modeling support method is a 3D modeling support method for generating a 3D high-precision view from a point to be considered, and the method includes: A step of acquiring three-dimensional basic map data and outputting it to a display device, and generating a criterion for extracting a replacement object to be replaced with a high-precision three-dimensional model around the point of interest and displaying it. and a step of causing the device to display the basic map data in an overlapping manner, and the determination criteria are displayed for a foreground range and a mid-range range from the point to be considered. Here, the method may include a step of aligning the highly accurate three-dimensional model of the replacement object with respect to the basic map data.

Furthermore, the invention of the 3D modeling support program is a 3D modeling support program for generating a 3D high-precision view from a point to be considered, and the invention is a 3D modeling support program for generating a 3D high-precision view from a point to be considered. A procedure for acquiring 3-dimensional basic map data and outputting it to a display device, and generating criteria for extracting replacement objects to be replaced with high-precision 3-dimensional models around the points to be considered, and displaying the same. and a procedure for causing the device to display the basic map data overlappingly with the basic map data, and causing a computer to execute a process for displaying the determination criteria in a foreground range and a mid-range range from the point to be considered.

The three-dimensional modeling support device of the present invention configured as described above includes a basic data acquisition unit that acquires three-dimensional basic map data of a map tool, and a basic data acquisition unit that extracts a replacement object to be replaced with a high-precision three-dimensional model. and an extraction criterion generating section that generates a determination criterion. Then, the display control section displays the determination criteria generated by the extraction criterion generation section superimposed on the basic map data. Further, this criterion is set for a foreground range and a mid-range range from the consideration point.

In this way, by combining easy-to-use basic map data that is updated appropriately with a wide range of data, and a high-precision 3D model, it is possible to create a highly accurate 3D model that is more accurate than when using basic map data alone. Various types of effective and efficient simulations can be performed with less load than when using only dimensional models.

In addition, by providing a position adjustment unit that determines the replacement target to be replaced with a high-precision 3D model and aligns the high-precision 3D model of the replacement target with the basic map data, the basic map data and It becomes possible to rationally integrate high-precision three-dimensional models.

Furthermore, with the invention of a 3D modeling support method and a 3D modeling support program, by combining basic map data with a high-precision 3D model, various types of effective and efficient simulations can be performed. .

FIG. 1 is a block diagram illustrating the configuration of a three-dimensional modeling support device according to the present embodiment. 3 is a flowchart illustrating the processing flow of the three-dimensional modeling support method according to the present embodiment. FIG. 2 is an explanatory diagram conceptually showing a range to be replaced with a high-precision three-dimensional model. FIG. 2 is an explanatory diagram showing the relationship between a target building and a medium/near view range on a two-dimensional map. 12 is a flowchart illustrating the flow of processing for determining a range to be replaced with a high-precision three-dimensional model. FIG. 3 is an explanatory diagram showing, in cross section, the criteria for extracting replacement objects. FIG. 3 is an explanatory diagram showing, in three dimensions, criteria for extracting replacement objects. FIG. 3 is an explanatory diagram showing an example in which the determination criteria are displayed superimposed on the basic map data. FIG. 2 is an explanatory diagram conceptually showing a method for positioning a high-precision three-dimensional model and basic map data. It is a flowchart explaining the flow of processing for positioning a high-precision three-dimensional model and basic map data. It is an explanatory view showing the direction in which a building is rotated when performing alignment. FIG. 3 is an explanatory diagram conceptually showing an adjustment method A when positioning is performed. FIG. 6 is an explanatory diagram conceptually showing an adjustment method B when performing position alignment. FIG. 7 is an explanatory diagram conceptually showing an adjustment method C when positioning is performed.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating the configuration of a three-dimensional modeling support device 1 according to the present embodiment. Further, FIG. 2 is a flowchart illustrating the processing flow of the three-dimensional modeling support method and three-dimensional modeling support program of this embodiment.

The three-dimensional modeling support device 1 of this embodiment is a device for generating a three-dimensional, highly accurate view from a point under consideration. For example, in order to generate a view from the rooftop or each floor of a target building to be constructed at the target point, we support creating a three-dimensional model of the buildings surrounding the target point (surrounding buildings) with the desired accuracy. It is a device.

The three-dimensional modeling support device 1 of this embodiment uses a basic map database 21 in which three-dimensional basic map data is stored, as shown in FIG. Basic map data is three-dimensional map data from map tools such as Google Earth (registered trademark) and 3D map data (ZENRIN Co., Ltd.) that update a wide range of data as appropriate.

Basic map data usually does not have the numerical information needed to create accurate three-dimensional models of buildings and the like. Furthermore, the basic map data does not need to be highly accurate, so it is sufficient to use data that is easily available as public data.

On the other hand, a high-precision three-dimensional model is data of a digital model of a building or the like created with high precision and having three-dimensional numerical information such as BIM (Building Information Modeling). Although it is not possible to obtain high-precision 3D models for all buildings from the high-precision 3D database 22 in which high-precision 3D models are stored, one or more high-precision 3D models are available around the target building. Simply obtaining a dimensional model can contribute to the generation of a highly accurate three-dimensional view.

The three-dimensional modeling support device 1 of this embodiment, which uses a basic map database 21 and a high-precision three-dimensional database 22, includes an arithmetic processing section 3, a storage section 4, a display control section 5, and a display such as a display. It is equipped with a device 6.

The arithmetic processing unit 3 includes a basic data acquisition unit 31 for acquiring three-dimensional basic map data, an extraction standard generation unit 32 for extracting a replacement target to be replaced with a high-precision three-dimensional model, and a replacement target It is mainly composed of a replacement object specifying section 33 that determines the replacement object, and a position adjustment section 34 that aligns the high-precision three-dimensional model of the replacement object with the basic map data.

The extraction criterion generation unit 32 generates determination criteria in order to extract a replacement object to be replaced with a high-precision three-dimensional model, centering on the point to be considered (target building). Note that details of the determination criteria will be described later.

The replacement object identification unit 33 finally selects a replacement object from among the replacement objects extracted based on the determination criteria, taking into account the possibility and necessity of replacement, such as the existence of data in the high-precision three-dimensional database 22. Determine the replacement object to be replaced with a high-precision three-dimensional model.

On the other hand, the position adjustment unit 34 performs position adjustment necessary for arranging the identified high-precision three-dimensional model of the replacement target on the basic map data. Note that the details of the position adjustment will be described later.

A display control unit 5 connected to the arithmetic processing unit 3 controls the display device 6 to display basic map data, judgment criteria, high-precision three-dimensional models, etc., and to display these in an overlapping manner. .

On the other hand, the storage unit 4 is a storage medium that records data generated during processing in the arithmetic processing unit 3 and data necessary for arithmetic processing, and includes a hard disk, a flash memory, a magnetic disk, an optical disk, and the like. Further, a cloud server can also be used as the storage unit 4.

Below, details of the criteria for extracting replacement objects to be replaced with high-precision three-dimensional models will be explained. FIG. 3 is a diagram for explaining the range of replacement with a high-precision three-dimensional model.

The three-dimensional modeling support device 1 of the present embodiment efficiently utilizes a wide range of basic map data that is updated as appropriate, while providing high accuracy in the foreground and mid-range areas when viewed from the target building. Create and place a 3D model with On the other hand, for distant view areas where there is no problem even if the accuracy is low, by using 3D basic map data as is, it is possible to reduce the burden of acquiring and updating 3D models and the calculation load during simulation. Make it.

Specifically, as shown in Figure 4, a high-precision 3D model is placed in a medium/foreground area with a radius of , the basic map data will be used as is.

FIG. 5 is a flowchart illustrating the flow of processing for determining the range to be replaced with a high-precision three-dimensional model. Further, FIG. 6 is an explanatory diagram showing, in cross section, the criterion J for extracting a replacement object to be replaced with a high-precision three-dimensional model.

The three-dimensional modeling support device 1 of this embodiment determines the creation range of a high-precision three-dimensional model along the flow, thereby creating a minimum range that can be used not only for view simulation but also for environmental analysis. Models can be created. By using a three-dimensional model of basic map data outside the range required for environmental analysis, it is possible to shorten the model creation time for view simulation.

First, in step S11, a range required for view simulation is set as range A. The viewing range A can first be derived from the viewpoint of the distance that can be visually recognized by humans. According to a paper titled ``Basic Research on Landscape Design'' by Osamu Shinohara, a Ph.D. in Engineering at the University of Tokyo, the so-called foreground distance, where humans can visually confirm a single object, is defined as up to 340 meters. From here, an area with a radius of 340m centered on the target building can be set as the foreground range.

Second, as an indicator of horizontal distance for objectively recognizing landscapes, there is a concept called ``aesthetics of cityscapes'' (Yoshinobu Ashihara, Iwanami Gendai Bunko, April 16, 2001), in which people view architecture in groups when looking out over cityscapes. There is a description that it is possible to see from the viewpoint up to a horizontal distance three times the height of the building.

Therefore, we will include an area that is three times the height of surrounding buildings as range A of the view simulation. Surrounding buildings are buildings that exist around the target building, and the higher the height of the surrounding building, the longer the horizontal distance corresponding to "3 times the height of the surrounding building" becomes. In other words, even if the building is located in the middle ground from the target building, if the height is high, it is better to replace it with a high-precision three-dimensional model. Therefore, a range A with a radius of 340 m centered on the target building and a distance three times the height of surrounding buildings is first set as the range to be replaced with a high-precision three-dimensional model.

Subsequently, in step S12, it is determined whether or not to perform a shade simulation. If the target building is a mid-to-high-rise building, the plans are required to be made public, and residents are often asked to explain the layout, floor and elevation plans, and shading plans. Therefore, we have decided to add the perspective of the range required for explanations to neighboring residents before the start of construction, which normally requires consideration of shading.

If shade verification is to be performed, the process moves to step S13. According to the "Architectural Application Memo 2020" (edited by the New Japan Hoki Architectural Application Practical Study Group), the boundary line of the explanation range of the shade map is the horizontal distance from the external wall of the planned building (target building) that is 2 times the height. A distance of twice the height of the building is required. From this, when employing a shadow simulation, this value can be used as a reference. Therefore, an area twice the height of the target building is set as range B.

Furthermore, in step S14, it is determined whether or not to perform an airflow simulation. If airflow verification is to be performed, the process moves to step S15. According to "Basic knowledge of building wind" (Wind Engineering Research Institute, Kajima Publishing, November 23, 2005), the range where wind speed increases in building construction is said to be 1 to 2 times the height of the building, and wind tunnel When creating models for experiments, the range is 2 to 4 times larger than that.

From this, it can be determined that even when performing a three-dimensional airflow simulation, it is possible to obtain sufficient verification results by ensuring at least twice the distance that is the minimum value. Therefore, an area three times the height of the target building is set as range C that needs to be modeled during the wind tunnel experiment.

Then, in step S16, the range with the maximum value is selected from the ranges (A, B, C) set in the steps up to this point, and a determination is made to extract the replacement target based on the range. Generate standards.

For example, as shown in FIG. 6, the height of the target building is _H0 , the maximum height of surrounding buildings is H, and the height of the human eye is h. The viewing angle at which humans can recognize objects is said to be 60°. Furthermore, as mentioned above, the elevation angle at which the cityscape can be captured as a group is 18° (horizontal distance from the viewpoint three times the building height).

Therefore, the foreground extraction unit J1, which sets the foreground range from the target building (point under consideration), uses the maximum value from the view simulation range A, the shade simulation range B, and the airflow simulation range C. Set as the distance a to represent.

Further, three times the maximum height H of surrounding buildings is set as the distance b representing the mid-ground extraction part J2 that sets the mid-ground range from the target building (point under consideration). FIG. 7 is an explanatory diagram showing, in three dimensions, the criterion J for extracting the replacement object generated in this way.

The determination criterion J set in this way is such that the foreground extraction section J1 is formed in a cylindrical shape, and the middle background extraction section J2 is formed in an inverted conical shape. FIG. 8 is an explanatory diagram showing an example in which the determination criterion J is displayed superimposed on the basic map data BM.

As shown in this figure, all the buildings in the basic map data BM that fall within the range of the foreground extractor J1 become candidates for replacement objects to be replaced with high-precision three-dimensional models. On the other hand, regarding the range of the mid-ground extraction part J2, only the buildings of the basic map data BM that protrude above the inverted cone-shaped determination criterion J are candidates for replacement objects to be replaced with high-precision three-dimensional models.

Next, the processing flow of the three-dimensional modeling support method and three-dimensional modeling support program of this embodiment will be explained with reference to FIG.
First, in step S1, the basic data acquisition unit 31 imports basic map data from the basic map database 21.

Subsequently, in step S2, the extraction criterion generation unit 32 generates a judgment criterion J for extracting replacement objects to be replaced with high-precision three-dimensional models from among the buildings existing in the basic map data, centering on the points to be considered. Perform the process to generate. As described above, the criterion J is generated in a shape that is a combination of a cylindrical shape and an inverted conical shape as shown in FIG. 7 based on the range determined by the flow shown in FIG. 5.

In step S3, the criterion J is output to the display device 6 superimposed on the basic map data (see FIG. 8). Here, the building that interferes with the foreground extraction section J1 and the building that interferes with the middle background extraction section J2 are automatically extracted by the replacement object identification section 33 as candidates for replacement objects (step S4). It is also possible to manually extract candidates for replacement objects while visually checking for interference between buildings on the basic map data displayed on the display device 6 and the criterion J.

Here, the high-precision three-dimensional database 22 does not necessarily store corresponding data for all buildings automatically extracted by the interference check by the replacement object identification unit 33. Furthermore, as the number of buildings that are replaced with high-precision three-dimensional models increases, the amount of data increases, which also affects the maneuverability of subsequent simulations.

Therefore, the replacement object specifying unit 33 selects a replacement object to be replaced with a high-precision three-dimensional model, and imports the determined high-precision three-dimensional model of the replacement object from the high-precision three-dimensional database 22 (step S5).

Here, the map data stored in the basic map database 21 is created based on coordinates such as altitude, longitude and latitude, and azimuth on the globe. On the other hand, building data stored in a high-precision three-dimensional database 22 such as BIM is created in the metric system. Therefore, it is not easy to align the high-precision three-dimensional model created in the metric system by adjusting the latitude and longitude on the basic map data BM, and a function to support position adjustment is required.

Therefore, the details of the position adjustment performed by the position adjustment section 34 when arranging the high-precision three-dimensional model of the replacement target on the basic map data will be described below. First, FIG. 9 is an explanatory diagram conceptually showing a method of positioning the high-precision three-dimensional model HM and the basic map data BM.

That is, even if the high-precision three-dimensional model HM and the basic map data BM are integrated as they are, they cannot be made to match completely, so it is necessary to perform position adjustment by some method. Specifically, this will be explained with reference to the flowchart of FIG. 10, which shows the flow of the process of aligning the high-precision three-dimensional model and the basic map data.

First, in step S21, the high-precision three-dimensional model selected by the replacement object specifying unit 33 is placed directly on the basic map data. Here, regarding the rotation of the high-precision three-dimensional model performed during alignment, as shown in FIG. 11, rotation is performed only in the direction around the Z-axis, and rotation around the X-axis or the Y-axis is not performed.

In step S22, the building whose position is to be adjusted and the position adjustment method are determined. Position adjustment is performed using buildings and the like (including structures and landmark objects) that exist in both the basic map data BM and the high-precision three-dimensional model HM. There are several possible adjustment methods, and three adjustment methods, adjustment method A, adjustment method B, and adjustment method C, will be described below.

FIG. 12 is a diagram conceptually explaining adjustment method A, which is step S231. In adjustment method A, an optimal solution is found that maximizes the overlapping ratio of the volumes of one or more selected buildings, etc., and the position, orientation (azimuth), and height at which the high-precision three-dimensional model is placed are determined.

In FIG. 12, solids whose volumes overlap most at a ratio of 96% are detected, and the position, height, and rotation angle of the azimuth of the entire high-precision three-dimensional model HM are adjusted to the basic map data BM. Next, the next three-dimensional bodies whose volumes overlap the most are matched in the same way. Then, adjustments are made until the overlapping ratios of all solids become approximately the same value.

In addition, in adjustment method B, which is step S232, as shown in FIG. 13, the positions of the centers of gravity GP of three or more selected buildings, etc. are determined, and the optimal Find a solution and determine the location, orientation (azimuth), and height of the high-precision three-dimensional model.

Specifically, we extract the position where the triangle created on the basic map data BM and the triangle created on the high-precision 3D model HM overlap most, and place the high-precision 3D model of the building whose position is to be adjusted at that position. Place the model. If the target building is a building scheduled for construction, it will be placed using this method since it does not exist on the basic map data BM. Here, the placement error can be reduced by increasing the size of the triangle.

Furthermore, FIG. 14 is a diagram conceptually explaining adjustment method C, which is step S233. Adjustment method C takes the coordinates of four or more corner points AP of one or more selected buildings, finds the optimal solution that minimizes the difference in the coordinates, and determines the position and orientation of the high-precision 3D model. (azimuth) and height. Note that the accuracy of alignment improves as the number of buildings selected increases.

Specifically, four corner points AP are taken from the building in the basic map data BM, and four corner points AP are also taken from the building in the high-precision three-dimensional model HM, and the difference in their coordinates is minimized. Integrate at the optimal location. At this time, the inclination angle of the building is not considered, and the building is assumed to be vertical.

In step S24, it is determined whether or not the position adjustment by the executed adjustment method was appropriate. If it is within the allowable range, the position adjustment process is terminated. If the position adjustment is not properly performed, another Select the adjustment method and redo the position adjustment.

After performing the above-described alignment in step S6 in this way, in step S7, a three-dimensional model in which the replacement target object in the basic map data BM is replaced with a high-precision three-dimensional model is displayed on the display device 6.

Then, in step S8, an arbitrary height of the target building scheduled to be constructed at the consideration point is selected as a viewpoint, and a highly accurate three-dimensional view from the desired height is generated as a view simulation.

Next, the operations of the three-dimensional modeling support device 1, three-dimensional modeling support method, and three-dimensional modeling support program of this embodiment will be explained.
The three-dimensional modeling support device 1 of the present embodiment configured as described above includes a basic data acquisition unit 31 that acquires three-dimensional basic map data of a map tool, and a replacement target to be replaced with a high-precision three-dimensional model. It also includes an extraction criterion generating section 32 that generates a criterion J for extraction.

Then, the display control section 5 causes the determination criterion J generated by the extraction criterion generation section 32 to be displayed superimposed on the basic map data. Further, this judgment criterion J is constituted by a foreground extraction section J1 that sets a foreground range from the target building (point under consideration) and a mid-range extraction section J2 that sets a mid-range range.

In this way, by combining a high-precision 3D model with basic map data that is updated as appropriate over a wide range of data, the accuracy is higher than when using only the basic map data, and it is possible to use only a high-precision 3D model. Various types of simulations can now be performed effectively and efficiently with less load than when running a computer.

In short, it is possible to perform a view simulation using only 3D basic map data, but since the accuracy is insufficient in the foreground and mid-range areas, the distance between the target building and neighboring buildings, and the target building The shape and height of the building as seen from the outside will differ from the reality, making it impossible to conduct an accurate study.

On the other hand, simply replacing some surrounding buildings in the foreground and mid-range around the target building with high-precision 3D models can improve the sense of distance between adjacent buildings and buildings that are clearly visible from the target building. It becomes possible to perform a view simulation in which the shape and height of the building are close to the actual conditions, making it possible to conduct an accurate study.

In addition, by providing a position adjustment unit 34 that determines a replacement target to be replaced with a high-precision three-dimensional model and aligns the high-precision three-dimensional model HM of the replacement target with the basic map data BM, the basic map data The BM and the high-precision three-dimensional model HM can be rationally integrated.

Furthermore, regarding the 3D modeling support method and 3D modeling support program of this embodiment, it is possible to perform various effective and efficient simulations by using the basic map data BM together with the high precision 3D model HM. become.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention may be made. Included in invention.

For example, in the embodiment described above, a case has been described in which the determination criterion J is formed by the foreground extraction section J1 formed in a cylindrical shape and the middle ground extraction section J2 formed in an inverted conical shape. The present invention is not limited to this, and it is also possible to extract replacement objects using criteria for the foreground range and mid-range range that are set based on other knowledge.

Furthermore, in the embodiment, a case has been described in which the position adjustment unit 34 adjusts the positions of the basic map data BM and the high-precision three-dimensional model HM, but the present invention is not limited to this, and the high-precision three-dimensional model If the HM has location information, it can be placed on the basic map data BM using only that location information.

1: Three-dimensional modeling support device 31: Basic data acquisition section 32: Extraction standard generation section 33: Substitute identification section 34: Position adjustment section 5: Display control section 6: Display device BM: Basic map data HM: High precision 3 Dimensional model J: Judgment standard J1: Foreground extraction section J2: Medium background extraction section

Claims (6)

A three-dimensional modeling support device for generating a three-dimensional high-precision view from a point under consideration,
a basic data acquisition unit that acquires 3D basic map data before placing a high-precision 3D model;
an extraction criterion generation unit that generates a criterion for extracting a replacement object to be replaced with a high-precision three-dimensional model around the consideration point;
a display control unit that displays the determination criteria generated by the extraction criteria generation unit over the basic map data;
The three-dimensional modeling support device is characterized in that the determination criteria are set for a foreground range and a mid-range range from the consideration point. 2. The three-dimensional modeling support device according to claim 1, wherein the determination criterion includes a foreground extraction section formed in a cylindrical shape and a middle ground extraction section formed in an inverted conical shape. a replacement object specifying unit that determines the replacement object;
3. The three-dimensional modeling support device according to claim 1, further comprising a position adjustment unit that aligns the high-precision three-dimensional model of the replacement object with the basic map data. A three-dimensional modeling support method for generating a three-dimensional high-precision view from a point under consideration, the method comprising:
a step of acquiring 3D basic map data before placing a high-precision 3D model and outputting it to a display device;
generating a criterion for extracting a replacement object to be replaced with a high-precision three-dimensional model around the point to be considered, and displaying the same on the display device superimposed on the basic map data,
A three-dimensional modeling support method, characterized in that the determination criteria are displayed for a foreground range and a mid-range range from the consideration point. 5. The three-dimensional modeling support method according to claim 4, further comprising the step of aligning the high-precision three-dimensional model of the replacement object with respect to the basic map data. A three-dimensional modeling support program for generating a three-dimensional high-precision view from a point under consideration,
A procedure for acquiring 3D basic map data before placing a high-precision 3D model and outputting it to a display device;
causing a computer to execute a procedure of generating a criterion for extracting a replacement object to be replaced with a high-precision three-dimensional model around the point to be considered, and displaying it on the display device superimposed on the basic map data; For this,
A three-dimensional modeling support program, characterized in that the program performs a process of displaying the criteria for a foreground range and a mid-range range from the point to be considered.