JP2008242590A - Three-dimensional internal space model generation method, apparatus and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for generating the virtual internal space of a building on a map. <P>SOLUTION: This three-dimensional internal space model generation method includes an acquisition step for acquiring, when accepting the specifying of a building being the object of generation of a virtual internal space model from a user, the shape data of the building from a map DB stored with three-dimensional data; and a generation step for generating the virtual internal space model of the building, and for storing it in a storage device by arranging bounding boxes and predetermined objects in the internal space of the building based on the acquired shape data of the building and bounding boxes dividing the internal space of the building and arrangement conditions stored in a parameter DB in which the arrangement conditions of the predetermined objects to be arranged according to the bounding boxes of the building has been stored. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for generating a virtual internal space of a building on a map using three-dimensional map data.

  In recent years, the need for proactive measures against risks such as disasters, crimes and terrorism is increasing. In particular, pre-training, for example, is required to deal with emergencies such as fires that occur inside buildings, hostages that take hostages, and terrorist hiding inside the buildings. As this pre-training, training using an existing building can be considered, but training by simulation using a virtual space is considered effective in terms of time, place, cost, and the like.

  On the other hand, for example, with the development of GIS (Geographic Information System) and car navigation systems, three-dimensional data such as the appearance and topography of buildings are being prepared in a form close to reality. On the other hand, the data inside the building has problems such as security and privacy, and it is difficult to obtain or maintain data in the actual internal space. Therefore, in order to perform a simulation for pre-training, the user must individually generate a virtual internal space or a real internal space of a building, which causes a problem of cost and time.

  As a technique for easily designing a building, for example, there is a technique described in Japanese Patent No. 3301704. Specifically, a skeleton space pattern storage means that stores a plurality of types of skeleton space patterns that define the outline shape and structural parts of the entire building, and a three-dimensional model and part information of a single or a plurality of combined room spaces. A functional space pattern storage means for storing a plurality of types of defined functional space patterns; a skeleton space selection means for displaying the skeleton space pattern on a screen of a display device and selecting an arbitrary skeleton space pattern by a predetermined input; Plan information in which the designated functional space pattern is combined with the skeleton space pattern by designating the area in which the functional space pattern is arranged and the type of the functional space pattern to be arranged with respect to the skeleton space pattern And display the combined diagram on the screen Design device is disclosed that includes a feature space selection unit that. Further, the outline shape information in the skeleton space pattern is set as a three-dimensional model, and the structural part is a part necessary for designing the building strength, and includes columns, beams, and load-bearing wall panels. In addition, it is also disclosed that the information on the structural part of the skeleton space pattern is information on the type and arrangement of the structural part. According to the technique described in the above publication, design work such as planning can be easily performed without a high-level design technique.

However, in the above publication, a user (for example, a salesman) has to select the type of structural component to be arranged in the building, the region in which the structural component is arranged, and the like. Furthermore, since the user must also input information around the building (for example, roads and neighboring areas), the technique described in the above publication does not automatically generate the internal space of the building actually existing on the map.
Japanese Patent No. 3301704

  As described above, the conventional technology cannot automatically generate the internal space of a building that actually exists on a map.

  Accordingly, an object of the present invention is to provide a technique for generating a virtual internal space of a building on a map.

  A three-dimensional internal space model generation method according to the present invention is a method of generating a virtual internal space model representing an internal space of a building on a map, and a user designates a building that is a generation target of the virtual internal space model. The acquisition step of acquiring the shape data of the building from the map database storing the 3D map data, and the bounding box and the building that partition the acquired shape data of the building and the internal space of the building By arranging the bounding box and the predetermined object in the internal space of the building based on the arrangement condition stored in the parameter database that stores the arrangement condition of the predetermined object arranged according to the bounding box of the building Generating a virtual internal space model of the object and storing it in a storage device. .

  If it does in this way, the virtual interior space of the building on a map can be generated using 3D map data. For example, if the arrangement conditions are changed, different virtual internal space models can be generated even for the same building, so that simulations assuming various situations can be easily performed.

  Moreover, you may make it further include the step of presenting the virtual interior space model of the building stored in the storage device to the user.

  Furthermore, the acquisition step may include a step of acquiring data related to the direction of the building and map data around the building from the map database. In the generation step, the bounding box and the predetermined object may be arranged in the internal space of the building based on the data related to the direction of the building and the map data around the building.

  In this way, the bounding box (for example, floor space, living space, etc.) and the object (for example, entrance, door, etc.) are arranged based on the direction of the building and the map data around the building. It is possible to generate a virtual internal space model considering the conditions. That is, a simulation that is closer to reality can be performed.

  In addition, when the acquisition step receives a designation of a predetermined area on the map as a generation target of the virtual internal space model from the user, the building included in the predetermined area is specified, and the shape data of the specified building May be included from the map database. And you may make it further include the step which implements a production | generation step about each building included in a predetermined area. In this way, since a virtual internal space model of a building included in a certain area can be generated, a simulation for a wide range can be easily performed.

  Further, the method may further include a step of receiving a built-in internal space model representing the arrangement state of the bounding box and the predetermined object from the user and storing it in the storage device. Then, the generation step may include a step of generating a virtual internal space model of the building based on the existing internal space model stored in the storage device and storing the virtual internal space model in the storage device. In this way, a virtual internal space model closer to reality can be generated.

  In addition, the arrangement condition may include a priority order for arranging the bounding box and the predetermined object. Furthermore, the bounding box may be at least one of a floor space, a living space, and an incidental space. The predetermined object may be at least one of an entrance, a door, a window, a staircase, an elevator, a closet, a locker, and a bathroom. For example, if a priority order is set such that the layout is arranged from a large internal space (for example, floor space), the overall layout should be balanced as compared with the case of arrangement from a small internal space (for example, bathroom). Can do.

  A program for causing a computer to execute the three-dimensional internal space model generation method according to the present invention can be created, such as a flexible disk, a CD-ROM, a magneto-optical disk, a semiconductor memory, a hard disk, etc. Stored in a storage medium or storage device. In some cases, digital signals are distributed over a network. Note that data being processed is temporarily stored in a storage device such as a computer memory.

  According to the present invention, a virtual internal space of a building on a map can be generated.

  An outline of an embodiment of the present invention is shown in FIG. In the present embodiment, for example, shape data of a specific building is acquired from 3D map data (also referred to as digital map data) used in GIS and car navigation systems, and the acquired shape data A virtual internal space model is generated by arranging virtual internal spaces. It should be noted that in arranging the virtual internal space, there may be a case where an existing internal space model created in advance by the user is applied, or there is a case where the virtual internal space is arranged based on various parameters regarding the arrangement conditions. Moreover, these may be combined.

  FIG. 2 shows a functional block diagram of the three-dimensional internal space model generation device according to one embodiment of the present invention. The three-dimensional internal space model generation apparatus includes a parameter input unit 1 that receives input of parameters regarding arrangement conditions and the like from a user, a digital map data input unit 3 that receives input of digital map data from the user, and a parameter input unit 1 Based on the data stored in the parameter DB 5 for storing the parameters, the digital map DB 7 for storing the digital map data received by the digital map data input unit 3, the parameter DB 5, the digital map DB 7, and the internal space model DB 11. An internal space model generation unit 9 that performs a process of generating a spatial model, an internal space model input unit 13 that receives an input of an existing internal space model from a user, and a virtual internal space model generated by the internal space model generation unit 9 Internal space model input section 3, an internal space model DB 11 that stores a built-in internal space model received by the user, an internal space model editing unit 15 that edits a virtual internal space model stored in the internal space model DB 11 in response to an operation from the user, And an output unit 17 that outputs a virtual internal space model stored in the space model DB 11.

  An example of data stored in the parameter DB 5 is shown in FIGS. FIG. 3 is an example of bounding box and object arrangement condition data. In the present embodiment, for example, an object representing a certain space such as a floor space or a living space is called a bounding box, and a door, a window, or the like arranged according to the bounding box is called an object. The arrangement condition data has a hierarchical structure as shown in FIG. 3, and defines the hierarchical structure and priority of bounding boxes and objects. For example, it shows that a living space bounding box and an accompanying space bounding box are arranged with respect to a floor space bounding box, and further shows that a living space bounding box is preferentially arranged.

  FIG. 4 is an example of parameters used when arranging the bounding box and the object. In the example of FIG. 4, the existing internal space model usage standard, the building type determination standard, the single floor height standard, the residential space bounding box creation standard area, the residential space bounding box placement priority direction, and the residential space Bounding box placement ratio, room bounding box creation standard area, room bounding box adjustment width, door object placement standard, entrance object placement standard, window object placement standard, staircase object placement standard, elevator object placement standard, The outer wall material standard, the wall material standard, the door material standard, and the color standard are included. Each parameter will be described together with a virtual internal space model generation process described below.

  FIG. 5 shows an example of data stored in the internal space model DB 11. In the example of FIG. 5, the model ID, the object ID, the object name, the material, the color, the number of coordinates, the coordinates 1, the coordinates 2, and so on are registered. The coordinate n (n = 1, 2,...) Represents a relative position from the reference position (0, 0, 0).

  Next, processing contents of the three-dimensional internal space model generation device shown in FIG. 2 will be described with reference to FIGS. First, the digital map data input unit 3 receives input of digital map data from the user and stores it in the digital map DB 7 (FIG. 6: step S1). Thereafter, the parameter input unit 1 accepts input of arrangement condition data (FIG. 3) and parameters (FIG. 4) from the user, and stores them in the parameter DB 5 (step S3).

  Then, the internal space model input unit 13 displays a pre-built internal space model creation screen as shown in FIG. 7 on the display device in response to a pre-made internal space model creation instruction from the user. The screen in FIG. 7 includes a menu bar 701, a work area 702, an object selection field 703, a 2D display button 704, and a 3D display button 705. For example, the user operates the mouse, drags and drops an arbitrary object, and places the object at an intended position. When the 3D display button 705 is clicked, the internal space model input unit 13 switches the display in the work area 702 to the three-dimensional display. And the internal space model input part 13 will be stored in internal space model DB11, if the registration instruction | indication of the created ready-made internal space model is received from a user (step S5). Note that when the standard for using the internal space model (FIG. 4) is set to “1: no internal space model used” (that is, when the internal space model is not used in the virtual internal space model generation process). This step is skipped.

  And if the internal space model production | generation part 9 receives a digital map display request | requirement from a user, based on the digital map data stored in digital map DB7, a map will be displayed on a display apparatus. The user then operates the mouse on this screen, for example, and designates an area that is a target for generating the virtual internal space model. The internal space model generation unit 9 receives the designated area, and temporarily stores information on the designated area (for example, latitude and longitude) in the storage device (step S7). Then, the internal space model generation unit 9 performs a virtual internal space model generation process (step S9). This process will be described later.

  Thereafter, the output unit 17 extracts and outputs the virtual internal space model of the building in the designated area stored in the internal space model DB 11 (step S11). For example, for a building in the designated area, the map data is updated so that the internal space can be recognized and displayed on the display device. In addition, when the user edits the generated virtual internal space model, the user inputs an instruction to start editing. When receiving an instruction to start editing from the user, the internal space model editing unit 15 displays the virtual internal space model on the display device. For example, a screen as shown in FIG. 7 is displayed. Then, in response to the user's operation, the internal space model editing unit 15 receives the edited virtual internal space model and updates the internal space model DB 11 (step S13).

  Next, the virtual internal space model generation process will be described with reference to FIGS. 8 and 9. First, the internal space model generation unit 9 reads arrangement condition data and parameters from the parameter DB 5 (FIG. 8: step S15). And the internal space model production | generation part 9 reads the digital map data of the designated area from digital map DB7 (step S17). Thereafter, the internal space model generation unit 9 determines whether there is an unprocessed building in the designated area (step S19). If there is no unprocessed building in the designated area (step S19: No route), this process is terminated and the process returns to the original process.

  On the other hand, when there is an unprocessed building in the designated area (step S19: Yes route), the internal space model generation unit 9 specifies the building to be processed, and the building from the read digital map data. Shape data is acquired (step S21). Then, the internal space model generation unit 9 determines the type of the building based on the building type determination criterion (step S23). The building type determination criterion represents the probability of being determined as a general house or a commercial building according to the height of the building. The internal space model generation unit 9 generates a random number according to this probability, and determines whether it is a general house or a commercial building.

  Then, the internal space model generation unit 9 determines whether to use the ready internal space model based on the ready internal space model use standard (step S25). The ready internal space model use standard represents whether or not the ready internal space model is used in the virtual internal space model generation process. If “2: Random” is set in the standard for using the internal space model, a random number is generated to determine whether to use the internal space model.

  If the existing internal space model is used (step S25: Yes route), the internal space model generation unit 9 specifies the existing internal space model to be used and reads it from the internal space model DB 11 (step S27). For example, a built-in internal space model that is similar in shape and size to the shape data of the building to be processed is extracted as a candidate and specified using a random number. Then, as shown in FIG. 9, the internal space model generation unit 9 expands, reduces, or rotates the read existing internal space model so as to match the external shape of the building to be processed, and applies it to the building (step S <b> 29). ). Then, the process returns to step S19.

  On the other hand, when the existing internal space model is not used (step S25: No route), the internal space model generation unit 9 performs the processing of steps S31 to S37 in order to generate a virtual internal space model. First, the internal space model generation unit 9 performs floor space bounding box arrangement processing (step S31). In the floor space bounding box arrangement processing, as shown in FIG. 10, the floor space bounding boxes 1002 to 1005 are allocated by dividing the shape data 1001 into equal heights.

  The floor space bounding box arrangement process will be described with reference to FIGS. First, the internal space model generation unit 9 specifies an unprocessed three-dimensional object from the building to be processed (FIG. 11: Step S39). For example, as shown in FIG. 13, when a building is composed of a three-dimensional object 1301 and a three-dimensional object 1302, it is divided into a three-dimensional object 1301 and a three-dimensional object 1302, and the processing of steps S41 to S47 described below is performed. Is implemented.

  And the internal space model production | generation part 9 acquires the height of a specific solid object (step S41), and calculates the number of floors based on the height reference | standard of a specific solid object and the height of a single floor (step S43). . The single floor height standard is a standard for determining the height of the floor space bounding box, and different values are set for ordinary houses and commercial buildings. Thereafter, the internal space model generation unit 9 calculates the height of a single floor based on the height of the specific three-dimensional object and the calculated number of floors (step S45). For example, as shown in FIG. 12, when the height 1201 of the three-dimensional object is divided by the height reference 1202 of a single floor, the quotient (integer value) becomes the number of floors. At this time, a remainder 1203 may occur. In the present embodiment, by dividing the height of the specific three-dimensional object by the number of floors, the height of a single floor is calculated so as not to generate a remainder 1203. When the height of the specific three-dimensional object is smaller than the height standard of a single floor, the number of floors is 1. Then, the internal space model generation unit 9 places the floor space bounding box on the specific three-dimensional object with the calculated height of the single floor as the height of the floor space bounding box (step S47). The arrangement state of the floor space bounding box is stored in the internal space model DB 11. Furthermore, the internal space model generation unit 9 determines the material and color of the outer wall of the building based on the outer wall material standard and the color standard. The outer wall material standard represents the probability of the material of the outer wall of the building according to the number of floors of the building. A color reference represents the probability of a color of an object or the like placed in a building. The internal space model generation unit 9 generates random numbers according to these probabilities, and determines the material and color of the outer wall of the building.

  And the internal space model production | generation part 9 judges whether the process was completed about all the solid objects (step S49). If the processing has not been completed for all three-dimensional objects (step S49: No route), the processing returns to step S39. On the other hand, when the processing is completed for all three-dimensional objects (step S49: Yes route), the processing returns to the original processing.

  By performing the processing as described above, a floor space having a uniform height can be arranged. Further, even in the case of a building composed of a plurality of three-dimensional objects as shown in FIG. 13, the floor space is not arranged across the plurality of three-dimensional objects, so that a natural layout can be achieved.

  Returning to the description of FIG. 8, the internal space model generation unit 9 performs a living space bounding box arrangement process (FIG. 8: step S33). In the living space bounding box placement process, as shown in FIG. 10, the floor space bounding box 1005 and the accompanying space bounding box are added to the floor space bounding box 1005 according to predetermined parameters (for example, the living space bounding box placement priority direction). Allocate 1007. The floor space bounding boxes 1002 to 1004 are similarly processed.

  The living space bounding box arrangement process will be described with reference to FIGS. First, the internal space model generation unit 9 specifies an unprocessed floor space bounding box (FIG. 14: step S51). For example, the processing may be performed sequentially from the top floor, or may be performed sequentially from the first floor. And the internal space model production | generation part 9 judges whether it is set as the same arrangement | positioning as another floor space bounding box (step S53). For example, high-rise buildings and condominiums, except for certain floors (for example, the first floor), the rough layout of each floor often does not change much. Therefore, for example, for a floor space bounding box having the same size except for a certain floor, the living space bounding box and the incidental space bounding box may be arranged in the same manner. Further, it may be determined whether the same arrangement as that of other floor space bounding boxes is made based on predetermined parameters (not shown), random numbers, and the like.

  If it is determined that the arrangement is the same as that of the other floor space bounding box (step S53: Yes route), the internal space model generation unit 9 follows the other floor space bounding box to the specific floor space bounding box. A box and an accompanying space bounding box are arranged (step S55). In addition, about the arrangement | positioning state of a living space bounding box and an incidental space bounding box, it stores in internal space model DB11.

On the other hand, when it is determined that the arrangement is not the same as the other floor space bounding boxes (step S53: No route), the internal space model generation unit 9 calculates the area S of the specific floor space bounding box (step S57). . For example, when n coordinates constituting the plane for obtaining the area S are (x ₁ , y ₁ ), (x ₂ , y ₂ ),..., (X _n , y _n ), the following equation is used. To calculate the area S. Note that i is 1 to n, and (x _{n + 1} , y _{n + 1} ) = (x ₁ , y ₁ ).
S = 1/2 × Σ (x _i −x _{i + 1} ) (y _i + y _{i + 1} ) (1)

  Then, the internal space model generation unit 9 determines whether the calculated area S is equal to or larger than the living space bounding box creation reference area (step S59). The living space bounding box creation reference area represents a minimum area necessary for arranging the living space bounding box.

  If the calculated area S is less than the residential space bounding box creation reference area (step S59: No route), the internal space model generation unit 9 arranges the incidental space bounding box on the floor space bounding box (step S61). In the present embodiment, when the area S is less than the reference area for creating the living space bounding box, it is considered that there is not sufficient space for arranging the living space bounding box in the floor space bounding box, and the living space bounding box is Do not place.

  On the other hand, when the calculated area S is equal to or larger than the residential space bounding box creation reference area (step S59: Yes route), the internal space model generation unit 9 identifies the residential space layout orientation based on the residential space bounding box layout priority orientation. (Step S63). The living space bounding box arrangement priority direction represents the priority of the arrangement direction of the living space bounding box. For example, in FIG. 4, they are set in the order of south, east, west, and north. Although not shown, priority may be specified randomly using random numbers.

  Details of the processing in step S63 will be described with reference to FIGS. 15 (a) and 15 (b). First, in the plane ABCD (FIG. 15A), the internal space model generation unit 9 starts from the center P and is a vector orthogonal to each line segment (line segment AB, line segment BC, line segment CD, and line segment DA). (Vectors 1501 to 1504) are determined. And the interior space model production | generation part 9 specifies the vector adjacent to the direction with the highest priority designated by the living space bounding box arrangement | positioning priority direction, and calculates the angle (alpha) 1 and (alpha) 2 to each vector. Then, α1 and α2 are compared, and the one with the smaller angle to the vector is specified as the living space arrangement direction. For example, in FIG. 15A, if the direction with the highest priority is “south”, vectors 1501 and 1502 are specified as two adjacent vectors, and α1 and vector 1502 are defined as the angles to the vector 1501. Α2 is respectively calculated as the angle. In the example of FIG. 15A, since α1 <α2, the direction of the vector 1501 is specified as the living space arrangement direction. If any of the vectors overlaps the direction with the highest priority, the direction of the vector is set as the living space arrangement direction.

  As shown in FIG. 15B, when α1 = α2, the living space arrangement direction is specified based on the direction with the next highest priority. In FIG. 15B, vectors 1505 and 1506 are specified as vectors adjacent to the highest priority direction (“south”), α1 as the angle to vector 1505, and α2 as the angle to vector 1506. Each is calculated. Since α1 = α2, the next highest priority direction (“east”) is specified, and β1 is calculated as the angle to the vector 1505 and β2 is calculated as the angle to the vector 1506. In the example of FIG. 15B, since β1 <β2, the direction of the vector 1505 is specified as the living space arrangement direction.

  Returning to the description of FIG. 14, the internal space model generation unit 9 arranges the living space bounding box and the incidental space bounding box in the floor space bounding box based on the specified living space placement direction and the living space bounding box placement ratio. (Step S65). The living space bounding box arrangement ratio represents the ratio of the living space bounding box in the floor space bounding box. In addition, about the arrangement | positioning state of a living space bounding box and an incidental space bounding box, it stores in internal space model DB11.

  Details of the processing in step S65 will be described with reference to FIG. In FIG. 16, a vector 1601 is a vector indicating the living space arrangement direction. First, the internal space model generation unit 9 specifies a point where the vector 1601 and each line segment (in FIG. 16, line segment AB and line segment CD) intersect. In the example of FIG. 16, a point where the vector 1601 and the line segment AB intersect is a point E, and a point where the vector 1601 and the line segment CD intersect is a point F. And the internal space model production | generation part 9 pinpoints the point G from which line segment EG: line segment GF becomes n: m on line segment EF. Here, the ratio n of the line segment (that is, the line segment EG) near the living space arrangement direction is “the living space bounding box arrangement ratio”, and the ratio m of the other line segment (that is, the line segment GF) is “1- The ratio of “bounding space bounding box”. Then, the internal space model generation unit 9 determines a line segment HI that passes through the point G and is orthogonal to the vector 1601. And the internal space model production | generation part 9 arrange | positions a living space bounding box on the plane ABHI near the living space arrangement | positioning direction, and arranges an incidental space bounding box on the plane IHCD. Further, the internal space model generation unit 9 determines the material and color of the wall inside the building based on the wall material standard and the color standard. The wall material standard represents a material of a wall inside the living space bounding box or the incidental space bounding box. Note that the material and color of the walls inside the building are the same in the building.

  Returning to the description of FIG. 14, the internal space model generation unit 9 determines whether the processing has been completed for all floor space bounding boxes (step S <b> 67). If the process has not been completed for all floor space bounding boxes (step S67: No route), the process returns to step S51. On the other hand, when the processing is completed for all floor space bounding boxes (step S67: Yes route), the living space bounding box placement processing is terminated and the processing returns to the original processing.

  By carrying out the processing as described above, the living space bounding box and the incidental space bounding box can be arranged in various patterns by changing the parameters even in the same building. In addition, for example, the living space can be arranged in a natural layout, such as being arranged southward with good sunlight.

  Returning to the description of FIG. 8, the internal space model generation unit 9 performs the bounding box placement processing of the room (FIG. 8: step S35). The room bounding box arrangement process will be described with reference to FIGS. 17 and 18. First, the internal space model generation unit 9 specifies an unprocessed living space bounding box (FIG. 17: step S69). And the internal space model production | generation part 9 judges whether it is set as the same arrangement | positioning as another living space bounding box (step S71). For example, it is determined whether the same arrangement as that of other living space bounding boxes is made based on predetermined parameters (not shown), random numbers, and the like.

  If it is determined that the arrangement is the same as that of the other living space bounding box (step S71: Yes route), the internal space model generation unit 9 follows the other living space bounding box to the specific living space bounding box. Is arranged (step S73). In addition, about the arrangement | positioning state of a room bounding box, it stores in internal space model DB11.

  On the other hand, when it is determined that the same arrangement as the other living space bounding boxes is not made (step S71: No route), the internal space model generation unit 9 calculates the area of the specific living space bounding box (step S75). In addition, if the coordinate which comprises the plane of a living space bounding box is substituted into (1) Formula mentioned above, the area of a living space bounding box is computable. Then, the internal space model generation unit 9 calculates the maximum number of rooms based on the calculated area and the room bounding box creation reference area (step S77). The room bounding box creation reference area represents a minimum area necessary for arranging the room bounding box. Therefore, when the calculated area is divided by the room bounding box creation reference area, the quotient (integer value) becomes the maximum number of rooms. In addition, the room bounding box creation reference area is a value smaller than the living space bounding box creation reference area.

  And the internal space model production | generation part 9 determines the number of rooms by a random number within the range of the calculated maximum number of rooms (step S79). And the interior space model production | generation part 9 determines the adjustment value with respect to a room bounding box with a random number within the range of a room bounding box adjustment width, and calculates the width of each room (step S81). The room bounding box adjustment width represents a range of adjustment values for adjusting the width of the room bounding box.

Details of the processing in step S81 will be described with reference to FIG. In FIG. 18, the living space bounding box is arranged on the plane ABHI, the incidental space bounding box is arranged on the plane IHCD, and the room bounding boxes 1801 to 1803 (number of rooms: 3) are arranged in the living space bounding box. An example of arrangement is shown. In FIG. 18, l ₁ represents an adjustment value for the room bounding box 1801, and l ₂ represents an adjustment value for the room bounding box 1802. First, the internal space model generation unit 9 determines adjustment values l ₁ and l ₂ using random numbers. Then, by dividing the length L of the boundary line (line segment HI) between the living space bounding box and the incidental space bounding box by the number of rooms, the width when the room bounding boxes are evenly arranged (= L / 3) ) Is calculated. Then, the width of the bounding box 1801 is calculated by adjusting the calculated width with the adjustment value l ₁ . That is, L / 3 + l ₁ is the width of the room bounding box 1801. Similarly, the width of the bounding box 1802 is calculated by adjusting the calculated width with the adjustment value l ₂ . That is, L / 3 + l ₂ is the width of the room bounding box 1802. In addition, the width of the room bounding box 1803 is calculated by subtracting the widths of the room bounding box 1801 and the room bounding box 1802 from the length L. That is, L− (L / 3 + l ₁ ) − (L / 3 + l ₂ ) is the width of the room bounding box 1803.

  Returning to the description of FIG. 17, the internal space model generation unit 9 arranges the room bounding boxes based on the calculated width of each room bounding box (step S83). In addition, about the arrangement | positioning state of a room bounding box, it stores in internal space model DB11. In addition, the internal space model generation unit 9 specifies the usage of the bounding box of the living room with a random number (step S85). Applications include office rooms, conference rooms, living rooms, Western-style rooms, Japanese-style rooms, bedrooms, and the like. And the interior space model production | generation part 9 judges whether the process was completed about all the living space bounding boxes (step S87). If the processing has not been completed for all the living space bounding boxes (step S87: No route), the processing returns to step S69. On the other hand, when the process is completed for all the living space bounding boxes (step S87: Yes route), the room bounding box arrangement process is terminated and the process returns to the original process.

  Returning to the description of FIG. 8, the internal space model generation unit 9 performs an object arrangement process (FIG. 8: step S37). The object placement process will be described with reference to FIGS. First, the internal space model generation unit 9 specifies an unprocessed floor (FIG. 19: Step S89). And the internal space model production | generation part 9 judges whether it makes the same arrangement | positioning as another floor (step S91). For example, since the steps and elevators described below are arranged at a common position on each floor, objects may be arranged in the same manner as other floors. Further, it may be determined whether the same arrangement as other floors is made based on predetermined parameters (not shown), random numbers, and the like.

  If it is determined that the arrangement is the same as that of the other floor (step S91: Yes route), the internal space model generation unit 9 arranges the object on the specific floor according to the arrangement state of the object on the other floor (step S93). ). The object arrangement state is stored in the internal space model DB 11. And it transfers to the process of step S121 (FIG. 23) via the terminal A. FIG.

  On the other hand, when it is determined that the arrangement is not the same as that of the other floors (step S91: No route), the internal space model generation unit 9 acquires the bounding boxes arranged on the specific floor (step S95). Then, the internal space model generation unit 9 determines whether the specific floor is the first floor (step S97). If the specific floor is not the first floor (step S97: No route), the process of step S99 is skipped and the process proceeds to step S101. On the other hand, when the specific floor is the first floor (step S97: Yes route), the internal space model generation unit 9 arranges the entrance object on the outer wall surface of the incidental space bounding box based on the entrance object arrangement standard (step S97). S99). The entrance object arrangement reference represents a reference value and an adjustment value of the height and width of the entrance object. The arrangement state of the entrance object is stored in the internal space model DB 11.

  Details of the processing in step S99 will be described with reference to FIG. In FIG. 20, it is assumed that the living space bounding box is disposed on the plane ABHI and the incidental space bounding box is disposed on the plane IHCD. First, the internal space model generation unit 9 specifies the outer wall surface of the incidental space bounding box. In the example of FIG. 20, the line segment HC, line segment CD, and line segment DI are specified as the outer wall surface of the incidental space bounding box. And the internal space model production | generation part 9 acquires the map data around a building, and specifies the outer wall surface which touches a road among the specified outer wall surfaces based on the said map data. In the example of FIG. 20, the line segment HC and the line segment CD are specified as the outer wall surface in contact with the road. Further, the internal space model generation unit 9 calculates the distance from the road to the outer wall surface in contact with the road. In the example of FIG. 20, a distance 2001 from the road to the line segment CD and a distance 2002 from the road to the line segment HC are calculated. And the internal space model production | generation part 9 compares the calculated distance, and specifies the outer wall surface with a short distance to a road as an entrance object arrangement | positioning surface. In the example of FIG. 20, since distance 2001 <distance 2002, the line segment CD is specified as the entrance object arrangement plane. Then, the internal space model generation unit 9 determines the height and width of the entrance object based on the entrance object arrangement standard. Specifically, the height and width adjustment values are determined by random numbers, and the height and width reference values are adjusted. Then, the internal space model generation unit 9 arranges an entrance object 2003 as shown in FIG.

  Returning to the description of FIG. 19, the internal space model generation unit 9 arranges the door object at the boundary between the room bounding box and the incidental space bounding box based on the door object placement standard (step S <b> 101). The door object arrangement reference represents a reference value and an adjustment value for the height and width of the door object. The arrangement state of the door object is stored in the internal space model DB 11.

  Details of the processing in step S101 will be described with reference to FIG. In FIG. 21, it is assumed that the room bounding boxes 2111 to 2113 are arranged on the plane ABHI, and the incidental space bounding box is arranged on the plane IHCD. First, the internal space model generation unit 9 identifies the boundary between the room bounding box and the accompanying space bounding box. In the example of FIG. 21, the line segment IT is specified as the boundary between the room bounding box 2111 and the accompanying space bounding box, and the line segment TU is specified as the boundary between the room bounding box 2112 and the accompanying space bounding box. A line segment UH is specified as a boundary between and the accompanying space bounding box. And the internal space model production | generation part 9 determines the height and width | variety of a door object based on a door object arrangement | positioning reference | standard. Specifically, the adjustment values (height and width) of the door object are determined by random numbers, and the height and width of the door object are calculated by adjusting the reference values (height and width). Further, the internal space model generation unit 9 determines the material and color of the door based on the door material standard and the color standard. Note that the door material and color are the same in the building. And the internal space model production | generation part 9 arrange | positions a door object in each boundary (In FIG. 21, line segment IT, line segment TU, and line segment UH). At this time, the arrangement position (for example, left side, right side, center, etc.) is determined by a random number. For example, in FIG. 21, the door object 2101 is arranged on the left side on the line segment IT, the door object 2102 is arranged on the center on the line segment TU, and the door object 2103 is arranged on the right side on the line segment UH. ing.

  In addition, when the door object cannot be arranged at the boundary between the room bounding box and the incidental space bounding box (for example, when the width of the door object is larger than the boundary length), the room bounding box and the adjacent room bounding box What is necessary is just to arrange a door object in the boundary of. For example, in FIG. 21, when it is determined that the door object cannot be arranged on the line segment TU, the boundary between the room bounding box 2112 and the room bounding box 2111, and the room bounding box 2112 and the room bounding box 2113 are displayed. A door object is placed on at least one of the boundaries.

  Returning to the description of FIG. 19, the internal space model generation unit 9 calculates the maximum number of windows (maximum number of windows) that can be arranged based on the overall length of the outer wall of the specific floor and the window object arrangement reference (step S103). The window object arrangement reference represents a reference value and an adjustment value for the height, width, and installation height of the window object. Here, the adjustment value (width) of the window object is determined by a random number, the width of the window object is calculated by adjusting the reference value (width), and the total outer wall length of the specific floor is divided by the width of the window object. The maximum number of windows is calculated.

  Then, the internal space model generation unit 9 determines the number of window objects to be arranged with random numbers within the calculated maximum number of windows (step S105). Furthermore, the internal space model generation unit 9 determines the adjustment value (height) of the window object using a random number, and calculates the height of the window object by adjusting the reference value (height). And the internal space model production | generation part 9 determines the arrangement position of a window object, and arrange | positions (step S107). Note that the arrangement state of the window object is stored in the internal space model DB 11.

  Details of the processing in step S107 will be described with reference to FIG. In FIG. 22, it is assumed that the living space bounding box is disposed on the plane ABHI and the incidental space bounding box is disposed on the plane IHCD. First, the internal space model generation unit 9 determines a breakdown of the number of window object arrangements determined in step S105 (the number of arrangements for the living space bounding box and the number of arrangements for the incidental space bounding box) using random numbers. Furthermore, the internal space model generation unit 9 determines a breakdown of the number of arrangements with respect to the living space bounding box (the number of arrangements of the living space bounding box with respect to each outer wall surface) using a random number. Similarly, the internal space model generation unit 9 determines a breakdown of the number of arrangements with respect to the incidental space bounding box (the number of arrangements of the incidental space bounding box with respect to each outer wall surface) using a random number. For example, in FIG. 22, the number of window objects arranged is 6, and as a breakdown, the number of arrangements for the living space bounding box is 5 and the number of arrangements for the incidental space bounding box is 1. Further, as a breakdown of the number of arrangements for the living space bounding box, the number of arrangements for the line segment AB is determined to be 3, the number of arrangements for the line segment BH is set to 1, and the number of arrangements for the line segment AI is determined to be 1. Further, as a breakdown of the number of arrangements for the auxiliary space bounding box, the number of arrangements for the line segment CD is determined as 1, the number of arrangements for the line segment CH is determined as 0, and the number of arrangements for the line segment DI is determined as 0.

  Then, the internal space model generation unit 9 determines the placement positions of the window objects so that the placement intervals are equal for the outer wall surfaces of the living space bounding box and the accompanying space bounding box. At this time, the adjustment value (installation height) of the window object is determined by a random number, and the installation height of the window object is also determined by adjusting the reference value (installation height). For example, in FIG. 22, window objects 2201 to 2203 are arranged at equal intervals on the line segment AB. A window object 2204 is disposed on the line segment AI, and a window object 2205 is disposed on the line segment BH. Further, a window object 2206 is arranged on the line segment CD so as not to overlap the entrance object 2208. If it overlaps with another object (for example, an entrance object), it may be adjusted so as to be placed on another outer wall surface. In addition, the arrangement positions of the window objects on each floor are made the same in the building.

  Returning to the description of FIG. 19, after the process of step S <b> 107, the internal space model generation unit 9 proceeds to the process of step S <b> 109 (FIG. 23) via the terminal B. The continuation of the object placement process shown in FIG. 19 will be described with reference to FIG. After the terminal B, the internal space model generation unit 9 determines whether the number of floors is 2 or more (FIG. 23: Step S109). If the number of floors is 1 (step S109: No route), the process from step S111 to step S119 is skipped and the process proceeds to step S121. In the present embodiment, when the number of floors is 1 (that is, when the building is one floor), the staircase object and the elevator object are not arranged.

  On the other hand, when the number of floors is 2 or more (step S109: Yes route), the internal space model generation unit 9 determines the type of stairs with a random number (step S111). For example, in FIG. 4, three types of straight staircase, turn-up staircase, and spiral staircase are set and determined from these. And the internal space model production | generation part 9 determines the arrangement position of a staircase object, and arrange | positions (step S113). The arrangement state of the staircase object is stored in the internal space model DB 11.

  Details of the processing in step S113 will be described with reference to FIG. Here, the case where a folding staircase is arranged will be described. In FIG. 24, it is assumed that the living space bounding box is disposed on the plane ABHI and the incidental space bounding box is disposed on the plane IHCD. First, the internal space model generation unit 9 determines the width and height of the staircase object based on the staircase object arrangement criterion. Then, the internal space model generation unit 9 arranges the staircase object so that the opposite surface of the staircase approach area to the staircase area (the wall installation surface in FIG. 24) is in contact with the inner wall of the auxiliary space bounding box. At this time, for example, the point C is scanned in the clockwise direction (in the order of point D, point I, and point H), and the position where the staircase object does not overlap with other objects is set as the staircase object placement position. For example, a staircase object 2401 is arranged as shown in FIG. Also, the arrangement positions of the stair objects on each floor are made the same in the building.

  Returning to the description of FIG. 23, the internal space model generation unit 9 generates a random number in accordance with the elevator object arrangement standard, and determines the number of elevator arrangements (step S115). The elevator object arrangement reference represents the installation probability of the elevator according to the number of floors of the building.

  Then, the internal space model generation unit 9 determines whether the calculated number of elevator arrangements is 1 or more (step S117). If the number of elevators is 0 (step S117: No route), the process of step S119 is skipped and the process proceeds to step S121. On the other hand, when the number of elevators is 1 or more (step S117: Yes route), the internal space model generation unit 9 determines the location of the elevator object and arranges it (step S119). The arrangement state of the elevator object is stored in the internal space model DB 11.

  Details of the processing in step S119 will be described with reference to FIG. Here, a case where two elevators are arranged will be described. In FIG. 25, it is assumed that the living space bounding box is disposed on the plane ABHI, and the incidental space bounding box is disposed on the plane IHCD. First, the internal space model generation unit 9 determines the width of the elevator object from the number of elevators arranged. Then, the internal space model generation unit 9 arranges the elevator object so that the opposite surface of the elevator approach area (the wall installation surface in FIG. 25) of the elevator object is in contact with the inner wall of the auxiliary space bounding box. At this time, as in the case of the staircase object, scanning is started clockwise from the point C (in the order of point D, point I, point H), and the position where the elevator object does not overlap with other objects is This is the placement position. For example, an elevator object 2551 is arranged as shown in FIG. Further, the position of the elevator object on each floor is made the same in the building.

  Returning to the description of FIG. 23, the internal space model generation unit 9 determines whether or not the processing has been completed for all the floors (step S121). If the processing has not been completed for all floors (step S121: No route), the process returns to the process of step S89 (FIG. 19) via the terminal C. On the other hand, when the processing has been completed for all the floors (step S121: Yes route), the object placement processing is terminated and the processing returns to the original processing.

  Returning to the description of FIG. 8, after the process of step S <b> 37 (object placement process), the process returns to step S <b> 19.

  By performing the processing as described above, the virtual internal space of the building on the map can be generated using the three-dimensional map data. Even in the same building, if the parameters are changed, different virtual internal space models are generated, so that various virtual internal space models can be generated without cost and time. Therefore, simulations assuming various situations can be easily performed.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this. For example, the functional block diagram described above does not necessarily correspond to an actual program module configuration. Further, in the processing flow, the processing order can be changed if the processing result does not change. Further, it may be executed in parallel.

  In addition, the processing flow has been described in accordance with the bounding box and object hierarchical structure and priority shown in FIG. 3, but when the hierarchical structure or priority is changed, the processing order is also changed according to the hierarchical structure or priority. Is done.

  Further, the configuration of the table described above is an example, and the configuration as described above is not necessarily required. Furthermore, parameters other than those described above may be used. In addition, objects other than the above may be arranged.

  Note that the three-dimensional internal space model generation apparatus is a computer apparatus. As shown in FIG. 26, the computer apparatus displays a memory 2501 (storage section), a CPU 2503 (processing section), and a hard disk drive (HDD) 2505. A display control unit 2507 connected to the device 2509, a drive device 2513 for the removable disk 2511, an input device 2515, and a communication control unit 2517 for connecting to a network are connected by a bus 2519. Application programs including an operating system (OS) and a Web browser are stored in the HDD 2505, and are read from the HDD 2505 to the memory 2501 when executed by the CPU 2503. If necessary, the CPU 2503 controls the display control unit 2507, the communication control unit 2517, and the drive device 2513 to perform necessary operations. Further, data in the middle of processing is stored in the memory 2501 and stored in the HDD 2505 if necessary. Such a computer realizes various functions as described above by organically cooperating hardware such as the CPU 2503 and the memory 2501 described above with the OS and necessary application programs.

(Appendix 1)
A method of generating a virtual interior space model that represents the interior space of a building on a map,
When receiving the designation of the building to be generated from the virtual internal space model from the user, obtaining step for obtaining the shape data of the building from the map database storing the three-dimensional map data;
The acquired shape data of the building and the bounding box that divides the internal space of the building, and the parameter database that stores the arrangement condition of a predetermined object arranged according to the bounding box of the building Generating the virtual internal space model of the building by storing the bounding box and the predetermined object in the internal space of the building based on an arrangement condition, and storing the virtual internal space model in a storage device;
A three-dimensional internal space model generation method executed by a computer.

(Appendix 2)
The three-dimensional internal space model generation method according to supplementary note 1, further comprising a step of presenting the virtual internal space model of the building stored in the storage device to the user.

(Appendix 3)
The obtaining step comprises
Obtaining data on the direction of the building and map data around the building from the map database,
The three-dimensional interior according to claim 1, wherein, in the generating step, the bounding box and the predetermined object are arranged in an internal space of the building based further on data relating to the direction of the building and map data around the building. Spatial model generation method.

(Appendix 4)
The obtaining step comprises
When designation of a predetermined area on the map is accepted as a generation target of the virtual internal space model from the user, the building included in the predetermined area is specified, and the shape data of the specified building is specified Obtaining from the map database,
The three-dimensional internal space model generation method according to appendix 1, further comprising the step of performing the generation step for each building included in the predetermined area.

(Appendix 5)
Receiving a ready internal space model representing an arrangement state of the bounding box and the predetermined object from the user, and storing the model in the storage device;
Further including
The generating step comprises:
The method of generating a three-dimensional internal space model according to appendix 1, comprising: generating the virtual internal space model of the building based on the ready internal space model stored in the storage device and storing the virtual internal space model in the storage device.

(Appendix 6)
The three-dimensional internal space model generation method according to claim 1, wherein the arrangement condition includes a priority order for arranging the bounding box and the predetermined object.

(Appendix 7)
The three-dimensional internal space model generation method according to supplementary note 1, wherein the bounding box is at least one of a floor space, a living space, an incidental space, and a living room.

(Appendix 8)
The three-dimensional internal space model generation method according to claim 1, wherein the predetermined object is at least one of an entrance, a door, a window, a staircase, an elevator, a closet, a locker, and a bathroom.

(Appendix 9)
A program for causing a computer to execute a process for generating a virtual internal space model representing an internal space of a building on a map,
When receiving the designation of the building to be generated from the virtual internal space model from the user, obtaining step for obtaining the shape data of the building from the map database storing the three-dimensional map data;
The acquired shape data of the building and the bounding box that divides the internal space of the building, and the parameter database that stores the arrangement condition of a predetermined object arranged according to the bounding box of the building Generating the virtual internal space model of the building by storing the bounding box and the predetermined object in the internal space of the building based on an arrangement condition, and storing the virtual internal space model in a storage device;
A three-dimensional internal space model generation program for causing a computer to execute.

(Appendix 10)
A device for generating a virtual interior space model representing an interior space of a building on a map,
A map database storing 3D map data;
A bounding box that partitions the internal space of the building, and a parameter database that stores an arrangement condition of a predetermined object arranged in accordance with the bounding box of the building;
When the designation of the building that is the generation target of the virtual internal space model is received from a user, an acquisition unit that acquires shape data of the building from the map database;
By arranging the bounding box and the predetermined object in the internal space of the building based on the acquired shape data of the building and the arrangement condition stored in the parameter database, the building Generating means for generating a virtual internal space model and storing it in a storage device;
A three-dimensional internal space model generation device having:

It is a figure for demonstrating the outline | summary of embodiment of this invention. It is a figure which shows the functional block diagram of the three-dimensional internal space model production | generation apparatus in embodiment of this invention. It is a figure which shows an example of the arrangement condition data stored in parameter DB. It is a figure which shows an example of the parameter stored in parameter DB. It is a figure which shows an example of the data stored in internal space model DB. It is a figure which shows the processing flow in embodiment of this invention. It is a figure which shows the example of a screen of a ready internal space model creation screen. It is a figure which shows the processing flow of a virtual internal space model production | generation process. It is a figure for demonstrating the process in the case of using a ready-made internal space model. It is a figure for demonstrating the process which arrange | positions a bounding box. It is a figure which shows the processing flow of a floor space bounding box arrangement | positioning process. It is a figure for demonstrating the process which arrange | positions a floor space bounding box. It is a figure for demonstrating the process which arrange | positions a floor space bounding box. It is a figure which shows the processing flow of a living space bounding box arrangement | positioning process. (A) And (b) is a figure for demonstrating the process which specifies living space arrangement | positioning direction. It is a figure for demonstrating the process which arrange | positions a living space bounding box. It is a figure which shows the processing flow of a room bounding box arrangement | positioning process. It is a figure for demonstrating the process which arrange | positions a room bounding box. It is a figure which shows the processing flow (1st part) of an object arrangement | positioning process. It is a figure for demonstrating the process which arrange | positions an entrance object. It is a figure for demonstrating the process which arrange | positions a door object. It is a figure for demonstrating the process which arrange | positions a window object. It is a figure which shows the processing flow (2nd part) of an object arrangement | positioning process. It is a figure for demonstrating the process which arrange | positions a staircase object. It is a figure for demonstrating the process which arrange | positions an elevator object. It is a functional block diagram of a computer.

Explanation of symbols

1 Parameter input unit 3 Digital map data input unit 5 Parameter DB 7 Digital map DB
9 Internal space model generator 11 Internal space model DB
13 Internal space model input unit 15 Internal space model editing unit 17 Output unit

Claims (5)

A method of generating a virtual interior space model that represents the interior space of a building on a map,
When receiving the designation of the building to be generated from the virtual internal space model from the user, obtaining step for obtaining the shape data of the building from the map database storing the three-dimensional map data;
The acquired shape data of the building and the bounding box that divides the internal space of the building, and the parameter database that stores the arrangement condition of a predetermined object arranged according to the bounding box of the building Generating the virtual internal space model of the building by storing the bounding box and the predetermined object in the internal space of the building based on an arrangement condition, and storing the virtual internal space model in a storage device;
A three-dimensional internal space model generation method executed by a computer. The obtaining step comprises
Obtaining data on the direction of the building and map data around the building from the map database,
2. The three-dimensional image according to claim 1, wherein, in the generating step, the bounding box and the predetermined object are arranged in an internal space of the building based further on data relating to a direction of the building and map data around the building. Internal space model generation method. The three-dimensional internal space model generation method according to claim 1, wherein the arrangement condition includes a priority for arranging the bounding box and the predetermined object. A program for causing a computer to execute a process for generating a virtual internal space model representing an internal space of a building on a map,
When receiving the designation of the building to be generated from the virtual internal space model from the user, obtaining step for obtaining the shape data of the building from the map database storing the three-dimensional map data;
The acquired shape data of the building and the bounding box that divides the internal space of the building, and the parameter database that stores the arrangement condition of a predetermined object arranged according to the bounding box of the building Generating the virtual internal space model of the building by storing the bounding box and the predetermined object in the internal space of the building based on an arrangement condition, and storing the virtual internal space model in a storage device;
A three-dimensional internal space model generation program for causing a computer to execute. A device for generating a virtual interior space model representing an interior space of a building on a map,
A map database storing 3D map data;
A bounding box that partitions the internal space of the building, and a parameter database that stores an arrangement condition of a predetermined object arranged in accordance with the bounding box of the building;
When the designation of the building that is the generation target of the virtual internal space model is received from a user, an acquisition unit that acquires shape data of the building from the map database;
By arranging the bounding box and the predetermined object in the internal space of the building based on the acquired shape data of the building and the arrangement condition stored in the parameter database, the building Generating means for generating a virtual internal space model and storing it in a storage device;
A three-dimensional internal space model generation device having:

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