JP6664243B2 - Building limit display device, building limit display control device, building limit display method, and building limit display control method - Google Patents

Description

  The present invention relates to an architectural limit display device and an architectural limit display method that provide a display that can visually capture the intrusion of a structure into an architectural limit.

  In order to ensure traffic safety, railways or roads have architectural limits, which are spaces in which structures cannot be installed. The architectural limits are not marked with marks, and it is difficult to visually grasp the range in real space. In the maintenance and inspection work of railways, confirmation that there is no structure entering the building limit, measurement of the distance of a structure near the building limit, and the like are performed by image measurement or surveying using a laser scanner or the like. In order to make it easier to visually grasp the positional relationship between a structure and a building limit, Patent Literature 1 discloses a technique of displaying a measurement point and a building limit of a structure measured on a cross-sectional view orthogonal to a track. I have.

JP 2005-271717 A

  However, according to the above-described conventional technique, only the measurement result on the position cross section on the track is displayed. That is, the result is obtained by capturing in two-dimensional coordinates. In this case, there is a possibility that the construction limit closest to the arbitrary location is not the construction limit displayed on the cross section including the arbitrary location. Therefore, when trying to confirm the measurement result of the positional relationship between an arbitrary point and the building limit in the measurement range, a huge number of cross-sections are created for each section at a short distance, and all cross-sections are created. Had to be seen.

  The present invention has been made in view of the above, and an object of the present invention is to provide a building limit display device capable of displaying the positional relationship between a building limit and a structure by an easy operation.

In order to solve the above-described problems and achieve the object, a building limit display device of the present invention includes three-dimensional point cloud information, which is position information of a plurality of measurement points, information on a shape of a building limit, and information on a route. And a data acquisition unit that acquires In addition, the building limit display device includes an operation receiving unit that receives selection of a first point from the three-dimensional point group information. The building limit display device calculates a second position for displaying the reference position of the shape of the building limit based on the first point, and based on the route information , the vertical direction, the height difference direction of the left and right rails. And a calculation unit that calculates a rotation axis and a rotation angle of the building limit shape in the extension direction of the rail, and converts position information of the building limit shape based on the rotation axis and the rotation angle. Further, the building limit display device includes a display unit that displays the shape of the building limit after the position information conversion in which the reference position is adjusted to the second position.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that the positional relationship between a building limit and a structure can be displayed by easy operation.

FIG. 1 is a block diagram illustrating a configuration example of a building limit display device according to a first embodiment. FIG. 4 is a diagram showing types of data acquired by a data acquisition unit according to the first embodiment. FIG. 3 is a diagram showing contents of three-dimensional point cloud data acquired by a data acquisition unit according to the first embodiment; The figure which shows the construction limit frame represented by the construction limit data which the data acquisition part concerning Embodiment 1 acquires. The figure which shows the content of the building limit data which the data acquisition part concerning Embodiment 1 acquires. The figure which shows the relationship between the track data and the right and left rail which the data acquisition part concerning Embodiment 1 acquires. The figure which shows the content of the track | line data acquired by the data acquisition part concerning Embodiment 1. 5 is a flowchart showing a process of displaying a building limit frame in the building limit display device according to the first embodiment. FIG. 9 is a diagram illustrating an example of line straight line data calculated by the calculation unit according to the first embodiment. 6 is a diagram illustrating an image of a process of calculating a rotation angle when the Z axis is used as a rotation axis in the calculation unit according to the first embodiment; FIG. 6 is a diagram illustrating an image of a process of calculating a rotation angle when a height difference vector of the left and right rails and a height difference vector of the left and right rails are used as rotation axes in the calculation unit according to the first embodiment; FIG. FIG. 7 is a diagram illustrating an image of a process of calculating a rotation angle γ when a rail extension direction vector and a rail extension direction vector are used as rotation axes in a calculation unit according to the first embodiment; The figure which shows the state which displayed the building limit frame in the position corresponding to the selected point on the display part concerning Embodiment 1. FIG. 4 is a diagram illustrating an example of a case where the calculation unit according to the first embodiment is configured by dedicated hardware; FIG. 3 is a diagram illustrating an example of a case where the calculation unit according to the first embodiment is configured by a CPU and a memory; FIG. 4 is a block diagram showing a configuration example of a building limit display device according to a second embodiment. The figure which shows the content of the building limit data which the data acquisition part concerning Embodiment 2 acquires. The figure which shows the content of the track data which the data acquisition part concerning Embodiment 2 acquires. 11 is a flowchart showing a process of displaying a building limit frame in the building limit display device according to the second embodiment.

  Hereinafter, a construction limit display device and a construction limit display method according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited by the embodiment.

Embodiment 1 FIG.
FIG. 1 is a block diagram illustrating a configuration example of the building limit display device 20 according to the first embodiment of the present invention. The building limit display device 20 includes a data acquisition unit 1, a display unit 2, an operation reception unit 3, and a calculation unit 4. In the present embodiment, as an example, a description is given of a building limit of a railway.

  FIG. 2 is a diagram illustrating types of data acquired by the data acquisition unit 1 according to the first embodiment. The data acquisition unit 1 acquires three-dimensional point cloud data 11, building limit data 12, and track data 13. Here, the data acquisition unit 1 has one configuration, but may have a different configuration for each data.

  The data acquisition unit 1 acquires three-dimensional point group data 11 that is three-dimensional point group information having three-dimensional coordinates of a structure or the like measured and acquired by a high-density laser scanner or the like. The three-dimensional point cloud data 11 has position information of a plurality of measurement points, that is, three-dimensional coordinates. The data acquisition unit 1 that acquires the three-dimensional point cloud data 11 may be a high-density laser scanner itself. The data acquisition unit 1 that acquires the three-dimensional point cloud data 11 is a data reading device that reads data of the three-dimensional point cloud data 11 measured and acquired by a high-density laser scanner via a recording medium, or a high-density data reading device. A communication device that receives the three-dimensional point cloud data 11 measured and acquired by the laser scanner by wire communication or wireless communication may be used.

  FIG. 3 is a diagram illustrating the contents of the three-dimensional point cloud data 11 acquired by the data acquiring unit 1 according to the first embodiment. Each point included in the three-dimensional point group data 11 is represented by information on three axes of an X coordinate, a Y coordinate, and a Z coordinate. For the X coordinate, the Y coordinate, and the Z coordinate, for example, using a plane rectangular coordinate system, the XY axes can be set on a horizontal plane, and the Z axis can be set in the height direction. Alternatively, for example, a coordinate system may be used in which an arbitrary point is set as the origin and the eastward direction is the X-axis direction, the northward direction is the Y-axis direction, and the vertically upward direction is the Z-axis direction. As a unit of data indicating the coordinate value of each point, a meter (m) or the like can be used, but the present invention is not limited to this. The data acquisition unit 1 may store the three-dimensional point cloud data 11 in a storage unit inside the data acquisition unit 1 or in an external storage unit (not shown).

  The data acquisition unit 1 acquires construction limit data 12 which is information indicating the shape of the construction limit frame. The data acquisition unit 1 that acquires the construction limit data 12 is a data reading device that reads the construction limit data 12 via a recording medium or a communication device that receives the construction limit data 12 by wire communication or wireless communication. Is also good.

  FIG. 4 is a diagram illustrating a construction limit frame 41 represented by the construction limit data 12 acquired by the data acquisition unit 1 according to the first embodiment. The point Org which is the reference position shown in FIG. 4 is a position corresponding to the center of the left and right rail positions. The construction limit data 12 indicates the three-dimensional coordinates of each point Pi (Ui, 0, Vi) of the construction limit frame 41 which is a part of the outer frame indicating the range of the construction limit shown in FIG. FIG. 5 is a diagram illustrating the contents of the building limit data 12 acquired by the data acquisition unit 1 according to the first embodiment. Here, the building limit data 12 is two-dimensional data represented by X-axis and Z-axis planes. That is, the coordinates in the Y-axis direction are 0. The data acquisition unit 1 may store the building limit data 12 in a storage unit inside the data acquisition unit 1 or in an external storage unit (not shown).

  Further, the data acquisition unit 1 acquires line data 13 having three-dimensional coordinates, which is information indicating the rail positions of the left and right rails. The track data 13 is data indicating the extension direction, the left-right inclination, and the extension direction of the track on which the train travels. The data acquisition unit 1 that acquires the line data 13 may be a high-density laser scanner itself. The data acquisition unit 1 that acquires the line data 13 is a data reading device that reads data of the line data 13 measured and acquired by a high-density laser scanner via a recording medium, or is measured and acquired by a high-density laser scanner. A communication device that receives the transmitted line data 13 by wire communication or wireless communication may be used.

  The data acquisition unit 1 may acquire, as travel data, information having three-dimensional coordinates of a travel locus at the time of measurement of the three-dimensional point cloud data 11 by the high-density laser scanner, instead of the line data 13. The traveling data is data indicating a traveling direction when the train travels, a left-right inclination when traveling, and a gradient in the traveling direction when traveling. When targeting a building limit of a road, the data obtaining unit 1 obtains road data having three-dimensional coordinates, which is information indicating a road position. The road data is data indicating the extension direction, the left-right inclination, and the extension direction of a road on which an automobile or the like travels. The data acquisition unit 1 acquires track data 13, travel data, or road data as information of a route on which a vehicle, such as a train or an automobile, which is a target of a building limit travels.

  FIG. 6 is a diagram illustrating a relationship between the line data 13 and the left and right rails acquired by the data acquiring unit 1 according to the first embodiment. The track data 13 is obtained by recording three-dimensional coordinates, which are positional information of the positions of the left rail and the right rail, at regular intervals. Let the left rail point on the left rail be Rli (Xli, Yli, Zli) and let the right rail point on the right rail be Rri (Xri, Yri, Zri). FIG. 7 is a diagram illustrating the content of the line data 13 acquired by the data acquisition unit 1 according to the first embodiment. The track data 13 is a black circle shown in FIG. 6 and indicates three-dimensional coordinates of a rail position at an arbitrary position. A set of data of the three-dimensional coordinates at the positions of the black circles on the left and right rails becomes the track data 13.

  In FIGS. 4 and 6, the rail point is set at the center of the surface where the rail contacts the vehicle, but the rail point is not limited to this. Since it is sufficient that the point Org shown in FIG. 4 can be obtained, a combination of the points inside the left and right rails or the points outside the left and right rails may be used. The data acquisition unit 1 may store the line data 13 in a storage unit inside the data acquisition unit 1 or in an external storage unit (not shown).

  Here, the three-dimensional point cloud data 11 and the track data 13 are data acquired at the same measurement opportunity. As the three-dimensional point cloud data 11 and the line data 13, for example, information measured by an MMS (Mobile Mapping System) can be used. In a vehicle equipped with a digital camera and a measuring device such as a laser, the MMS can accurately measure the position and orientation of the vehicle using a GPS (Global Positioning System) and an inertial navigation device. Therefore, in the MMS, the position of the structure can be accurately obtained by adding the position of the structure measured by the laser to the position of the own vehicle.

  The data acquisition unit 1 may detect the position of the rail from the three-dimensional point cloud data 11 and acquire the track data 13. The data acquisition unit 1 extracts, for example, a point group including a plurality of points from the three-dimensional point group data 11, and generates a shape represented by the extracted point group and a template that is a sequence of points representing the shape of the rail. The rail is detected by performing the matching. The data acquisition unit 1 can detect that a rail exists at a position of a point cloud that matches the shape of the template.

  Returning to the description of the configuration of the building limit display device 20 in FIG. The display unit 2 displays all or a part of the three-dimensional point cloud data 11 acquired from the data acquisition unit 1 and the building limit data 12 after the position information, that is, the three-dimensional coordinates are converted by the calculation unit 4 described later. Are superimposed and displayed. The display unit 2 performs display on a device included in the building limit display device 20, for example, a display mounted on a personal computer or the like. The display unit 2 includes only a display control unit that displays the three-dimensional point cloud data 11 and the like on the display unit, and the display unit uses an external display or the like that is externally connected to the building limit display device 20. May be.

  The operation receiving unit 3 receives a selection of an arbitrary point, for example, a first point at a position of a structure or the like from the three-dimensional point cloud data 11 displayed on the display unit 2 by an operation of the operator. The operation receiving unit 3 performs an input operation using a device constituting the building limit display device 20, for example, a keyboard or a mouse mounted on a personal computer or the like. The operation accepting unit 3 includes only an event receiving unit that receives an input operation event or the like, and a device that performs an input operation may use an external mouse or the like that is externally connected to the building limit display device 20. .

  The calculation unit 4 specifies the display position of the building limit frame 41 indicated by the building limit data 12. First, the calculation unit 4 calculates the closest rail position from the track data 13 for the position of the first point selected by the operation event received by the operation reception unit 3, and A second position, which is a position where the point Org is displayed, is calculated. The calculation unit 4 also uses the rail position calculated from the track data 13 as the rotation axis for converting the position information of the building limit frame 41, that is, the three-dimensional coordinate, and the extending direction vector of the rail and the left and right rail height difference vector. Is calculated, and the rotation angle is calculated. The calculation unit 4 converts the three-dimensional coordinates of the construction limit frame 41 into three-dimensional coordinates obtained by rotating the construction limit frame 41 based on the calculated rotation axis and rotation angle. The calculation unit 4 causes the display unit 2 to display the construction limit frame 41 indicated by the converted three-dimensional coordinates.

  Next, a flow of a process of displaying the building limit frame 41 on the building limit display device 20 will be described. FIG. 8 is a flowchart illustrating a process of displaying the building limit frame 41 in the building limit display device 20 according to the first embodiment.

  First, in the building limit display device 20, in a state where all or a part of the three-dimensional point cloud data 11 is displayed on the display unit 2, the operation receiving unit 3 receives an operation by the operator and displays the data. An operation of selecting an arbitrary point, which is the first point, is received from the stored data, that is, an input operation event occurs in the operation receiving unit 3 (step S1). When acquiring the information of the input operation event from the operation accepting unit 3, the calculation unit 4 acquires the position information of the selected point, that is, the data of the three-dimensional coordinates from the three-dimensional point group data 11 (step S2).

  The calculation unit 4 calculates the line straight line data of each of the left and right rails using the line data 13 as input information (Step S3). The calculation unit 4 may store the calculated line straight line data in a storage unit inside the calculation unit 4 or in an external storage unit (not shown).

  A method of calculating the line straight line data of each of the left and right rails by the calculation unit 4 will be described in detail. First, the calculation unit 4 groups the three-dimensional position coordinates of each of the left and right rail points of the track data 13 at a fixed distance interval, and linearly approximates points in the same group by a method such as the least square method. Next, the calculating unit 4 connects the end points of adjacent line segments to the line segment approximated to a straight line. The calculation unit 4 uses the connection of the end points as line straight line data. The calculating unit 4 may use the line straight line data of each of the left and right rails obtained by linear approximation, or may use a set of line segments connecting the points of the line data 13 as the line straight line data.

  FIG. 9 is a diagram illustrating an example of line straight line data calculated by the calculation unit 4 according to the first embodiment. In FIG. 9, 91 indicates line straight line data of the left rail, and 92 indicates line straight line data of the right rail. Reference numeral 90 denotes an arbitrary point selected by the operation receiving unit 3 in step S1.

  The calculation unit 4 calculates straight line data 93 of the track center from the line straight line data 91 of the left rail and the line straight line data 92 of the right rail (step S4). The track center corresponds to the center line of the left and right rails. The calculation unit 4 may store the calculated straight line data 93 of the trajectory center in a storage unit inside the calculation unit 4 or in an external storage unit (not shown). The calculation unit 4 may perform the processing of steps S3 and S4 in advance when the data acquisition unit 1 acquires the line data 13.

  The calculation unit 4 calculates the position information, that is, the three-dimensional coordinates, of the point having the shortest distance on the line straight line data of one of the rails from the point 90 selected in the process of step S1 (step S5). As an example, one rail will be described as a left rail and the other rail will be a right rail. Specifically, the calculation unit 4 calculates the three-dimensional coordinates of the point 94 by setting the intersection of the perpendicular drawn from the selected point 90 to the line straight line data 91 of the left rail as the shortest distance point 94. The calculation unit 4 may store the calculated three-dimensional coordinates of the point 94 in a storage unit inside the calculation unit 4 or in an external storage unit (not shown).

  The calculating unit 4 calculates, from the calculated points on the line straight line data of one rail, the position coordinates of the shortest distance on the line straight line data of the other rail, that is, three-dimensional coordinates (step S6). Specifically, the calculation unit 4 determines a point 95 as a shortest distance from a point 94 on the line straight line data 91 of the left rail with respect to the line straight line data 92 of the right rail as a point 95 having the shortest distance. Calculate the coordinates. The calculation unit 4 may store the three-dimensional coordinates of the calculated point 95 in a storage unit inside the calculation unit 4 or in an external storage unit (not shown).

  The calculation unit 4 calculates position information, that is, three-dimensional coordinates, of an intersection 96 between a straight line connecting the points 94 and 95 on the calculated line straight line data 91 and 92 of the left and right rails and the straight line data 93 of the track center (step S7). ). Specifically, the calculation unit 4 calculates three-dimensional coordinates of an intersection 96 between a straight line connecting the point 94 and the point 95 and the straight line data 93 of the trajectory center. Alternatively, the calculation unit 4 may calculate the three-dimensional coordinates of the intersection 96 by setting the intersection of a perpendicular drawn from the point 94 or the point 95 to the straight line data 93 of the trajectory center as the intersection 96. The calculation unit 4 may store the calculated three-dimensional coordinates of the intersection 96 in a storage unit inside the calculation unit 4 or in an external storage unit (not shown).

  The calculation unit 4 calculates α for rotating the position information of the building limit frame 41 indicated by the building limit data 12, that is, the three-dimensional coordinates, by the angle α using the Z axis as the rotation axis. The calculation unit 4 converts the three-dimensional coordinates of the construction limit frame 41 by rotating the three-dimensional coordinates of the construction limit frame 41 by the angle α using the Z axis as a rotation axis (step S8). The calculation unit 4 stores the three-dimensional coordinates of the building limit frame 41 after the three-dimensional coordinate conversion, which is rotated by the angle α using the Z axis as the rotation axis.

  Specifically, a method of calculating the rotation angle α will be described. FIG. 10 is a diagram illustrating an image of a process in which the calculation unit 4 according to the first embodiment calculates a rotation angle α when the Z axis is a rotation axis. In FIG. 10, a surface 101 is a two-dimensional surface including the X-axis direction and the Z-axis direction of the absolute coordinate system. The plane 102 indicates a two-dimensional plane including points 94 and 95 on the line straight line data 91 and 92 of the left and right rails, which is the shortest distance from the selected point 90, and the Z axis. The plane 102 is a plane including a height difference vector of points 94 and 95 on the line straight line data 91 and 92 of the left and right rails, which is the shortest distance from the selected point 90. The plane 103 is a two-dimensional plane including the line segment of the left rail line straight line data 91 including the point 94 on the left rail line straight line data 91 and the Z axis, which is the shortest distance from the selected point 90. It is shown. The plane 103 is a plane including the extension direction vector of the left rail, which is the shortest distance from the selected point 90. The calculation unit 4 calculates the rotation angle by setting the angle between the surface 101 and the surface 102 to α.

  The calculation unit 4 calculates the position information, that is, the three-dimensional coordinates, of the building limit frame 41 rotated by the angle α with the Z axis as the rotation axis in the process of step S8, and calculates the angle β with the height difference vector of the left and right rails as the rotation axis. The height difference vector and β of the left and right rails to be rotated only are calculated. The calculation unit 4 rotates the three-dimensional coordinates of the building limit frame 41 converted in step S8 by the angle β using the height difference vector of the left and right rails as a rotation axis, and outputs the three-dimensional coordinates of the building limit frame 41. Is converted (step S9). The calculation unit 4 stores the three-dimensional coordinates of the building limit frame 41 after the three-dimensional coordinate conversion, in which the height difference vectors of the left and right rails are rotated by the angle β using the rotation axis as the rotation axis.

  Specifically, a method of calculating the height difference vector and the rotation angle β of the left and right rails will be described. FIG. 11 is a diagram illustrating an image of a process of calculating the rotation angle β when the height difference vector 112 of the left and right rails and the height difference vector 112 of the right and left rails are used as rotation axes in the calculation unit 4 according to the first embodiment. It is. It is the figure which displayed the cross section in the surface 102 of FIG. In FIG. 11, a horizontal plane 111 is a horizontal plane in the absolute coordinate system, and indicates a two-dimensional plane including the X-axis direction and the Y-axis direction of the absolute coordinate system. The calculation unit 4 calculates a vector including a straight line connecting the points 94 and 95 calculated in the processes of steps S5 and S6 as the height difference vector 112 of the left and right rails. Further, the calculation unit 4 calculates a rotation angle by setting an angle formed between the horizontal plane 111 and the height difference vector 112 between the left and right rails to β.

  The calculation unit 4 calculates the position information, that is, the three-dimensional coordinates of the building limit frame 41 rotated by the angle β using the height difference vector 112 of the left and right rails as the rotation axis in the process of step S9, and calculates the extension direction vector of the rail as the rotation axis. To calculate the rail extension direction vector and γ for rotating by the angle γ. The calculation unit 4 converts the three-dimensional coordinates of the construction limit frame 41 by rotating the three-dimensional coordinates of the construction limit frame 41 converted in step S9 by the angle γ using the rail extension direction vector as a rotation axis. (Step S10). The calculation unit 4 stores the three-dimensional coordinates of the architectural limit frame 41 after the three-dimensional coordinate conversion, which is rotated by the angle γ using the rail extension direction vector as the rotation axis.

  Specifically, a method of calculating the rail extension direction vector and the rotation angle γ will be described. FIG. 12 is a diagram illustrating an image of a process of calculating the rail extension direction vector 121 and the rotation angle γ when the rail extension direction vector 121 is used as a rotation axis in the calculation unit 4 according to the first embodiment. 12, a horizontal plane 111 is the same as that in FIG. The calculation unit 4 calculates, as the rail extension direction vector 121, a vector including the line straight line data 91 of the left rail calculated in the process of step S3 and the point 94 of the left rail calculated in the process of step S5. Further, the calculation unit 4 calculates the rotation angle by setting the angle between the horizontal plane 111 and the extending direction vector 121 of the rail to γ.

  The calculating unit 4 determines the three-dimensional coordinate-converted building limit frame 41 rotated by the angle γ using the rail extension direction vector 121 as the rotation axis in the process of step S10, and the intersection Org at the point Org calculated in step S7. Is displayed on the display unit 2 so as to come to the position (step S11). FIG. 13 is a diagram illustrating a state where the building limit frame 41 is displayed at a position corresponding to the selected point 90 on the display unit 2 according to the first embodiment. As shown in FIG. 13, the display unit 2 has adjusted the selected point 90 which is the first point and the point Org which is the reference position of the construction limit frame 41 to the intersection 96 which is the second position. The building limit frame 41 after the position information conversion is displayed.

  Thereby, the building limit display device 20 can realize the display of the building limit frame 41 along the rail, and can display a display that allows the positional relationship between the selected point 90 and the building limit frame 41 to be visually caught by an easy operation. Can be provided.

  Although the building limit display device 20 displays the building limit frame 41 which is a portion of the frame outside the building limit as the building limit, not only the outside frame but also the building limit shown in FIG. 4 or FIG. It may be displayed so as to specify the entire range inside the frame 41.

  Next, the hardware configuration of the building limit display device 20 will be described. In the building limit display device 20, the data acquisition unit 1 is realized by a high-density laser scanner, a data reading device, a communication device, or the like. The display unit 2 is realized by an LCD (Liquid Crystal Display) or the like. The operation receiving unit 3 is realized by a keyboard or a mouse mounted on a personal computer or the like. The calculation unit 4 is realized by a processing circuit. That is, the construction limit display device 20 includes a processing circuit for calculating a rotation axis and a rotation angle for converting the three-dimensional coordinates of the construction limit frame 41 and converting the three-dimensional coordinates of the construction limit frame 41. The processing circuit may be dedicated hardware, or may be a CPU (Central Processing Unit) that executes a program stored in the memory and a memory.

  FIG. 14 is a diagram illustrating an example of a case where the calculation unit 4 according to the first embodiment is configured by dedicated hardware. When the processing circuit is dedicated hardware, the processing circuit 51 illustrated in FIG. 14 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), and an FPGA ( Field Programmable Gate Array) or a combination of these. Each function of the calculation unit 4 may be realized by the processing circuit 51 for each function, or each function may be realized by the processing circuit 51 collectively.

FIG. 15 is a diagram illustrating an example of a case where the calculation unit 4 according to the first embodiment is configured by a CPU and a memory. When the processing circuit includes the CPU 52 and the memory 53, each function of the calculation unit 4 is realized by software, firmware, or a combination of software and firmware. The software or firmware is described as a program and stored in the memory 53. In the processing circuit, each function is realized by the CPU 52 reading and executing a program stored in the memory 53. That is, when the calculating unit 4 is executed by the processing circuit, the building limit display device 20 calculates a rotation axis and a rotation angle for converting the three-dimensional coordinates of the building limit frame 41, A memory 53 is provided for storing a program that results in the step of transforming the three-dimensional coordinates. In addition, it can be said that these programs cause a computer to execute the procedure and method of the building limit display device 20. Here, the CPU 52 may be a processing device, an arithmetic device, a microprocessor, a microcomputer, a processor, a DSP (Digital Signal Processor), or the like. The memory 53 is, for example, a nonvolatile or volatile semiconductor memory such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Programmable ROM), and an EEPROM (Electrically EPROM). A magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD (Digital Versatile Disc), and the like are applicable.

  In addition, about each function of the calculation part 4, you may make it implement | achieve a part by exclusive hardware and implement | achieve a part by software or firmware. For example, the function of calculating the rotation axis and the rotation angle for converting the three-dimensional coordinates of the construction limit frame 41 is realized by a processing circuit 51 as dedicated hardware, and the three-dimensional coordinates of the construction limit frame 41 are realized. Can be realized by the CPU 52 reading and executing a program stored in the memory 53.

  As described above, the processing circuit can realize the above-described functions by dedicated hardware, software, firmware, or a combination thereof.

  As described above, according to the present embodiment, the building limit display device 20 accepts the selection of an arbitrary point that the operator wants to check, and places the building at the position on the rail corresponding to the position of the selected point. The three-dimensional coordinates of the limit frame 41 are converted and the architectural limit frame 41 is displayed. Thereby, the building limit display device 20 can display the relationship between the arbitrary point indicating the structure or the like and the building limit frame 41 in a three-dimensional expression by an easy operation by the operator. Can be provided. In addition, the building limit display device 20 can display the building limit frame again at a position corresponding to the changed point by changing an arbitrary point selected by the operator. There is no need to create diagrams.

  Although the case where the track data 13 is used has been described, the building limit display device 20 may use, instead of the track data 13, travel data having three-dimensional coordinates of a travel locus at the time of measurement with a high-density laser scanner. Similar effects can be obtained. In addition, the construction limit display device 20 can obtain the same effect for roads by using road data having three-dimensional coordinates of road positions instead of the track data 13.

Embodiment 2 FIG.
In the second embodiment, the construction limit display device has a plurality of construction limit frame data, and the data of the construction limit frame 41 can be changed depending on the position. The parts different from the first embodiment will be described.

  FIG. 16 is a block diagram illustrating a configuration example of a building limit display device 20a according to the second embodiment. The construction limit display device 20a is obtained by replacing the data acquisition unit 1 and the calculation unit 4 with the data acquisition unit 1a and the calculation unit 4a in the construction limit display device 20.

  The data acquisition unit 1a acquires construction limit data 12a that is information indicating the shape of the construction limit frame 41. FIG. 17 is a diagram illustrating the contents of the building limit data 12a acquired by the data acquiring unit 1a according to the second embodiment. The building limit frame 41 may have a different shape depending on the location. For example, the building limit frame 41 at the position where the platform of the station is located has a smaller left and right width than the normal building limit frame 41 and has a slim shape. In addition, the construction limit frame 41 in the tunnel has a smaller shape in both left and right and height than the normal construction limit frame 41. As described above, the shape of the building limit frame 41 varies depending on the place or the contents determined by the manager of the railway business. Therefore, in the second embodiment, the data acquisition unit 1a uses the building limit data 12a as information on a plurality of building limit frames 41, information on building limit frame pattern numbers for identifying each building limit frame pattern, and each building limit data. The display color information for displaying the limit frame 41 is acquired.

  The data acquisition unit 1a acquires the line data 13a. FIG. 18 is a diagram illustrating the contents of the line data 13a acquired by the data acquiring unit 1a according to the second embodiment. As described above, the construction limit frame 41 may have a different shape depending on the location. Therefore, in the second embodiment, information on the building limit frame pattern number indicating the building limit frame pattern corresponding to the location of each position of the rail is set in the track data 13a together with the information on the three-dimensional coordinates of the positions of the left and right rails. It is assumed that The construction limit frame pattern corresponding to each position of the rail is set by an operator or the like.

  For the calculated point 94, the calculating unit 4a acquires information on the building limit frame pattern corresponding to the position of the point 94 with reference to the track data 13a, and based on the acquired information on the building limit frame pattern, obtains the building limit data 12a. To select a building limit frame pattern to be used from, and obtain data of three-dimensional coordinates of the corresponding building limit frame pattern.

  The calculating unit 4a calculates the left and right rail height difference vector, the rail extending direction vector, the rotation angle, and the like by the same method as in the first embodiment. The calculation unit 4a displays the building limit frame 41 on the display unit 2 in a display color corresponding to the display color information stored in the building limit data 12a using the data of the selected building limit frame 41. The distinction of the pattern of the construction limit frame 41 is not limited to the display color, but a symbol for distinguishing the pattern of the construction limit frame 41 is set in place of the display color, and the symbol is set near the construction limit frame 41. It may be displayed so that the applicable building limit frame pattern can be distinguished.

  Next, a flow of a process of displaying the building limit frame 41 on the building limit display device 20a will be described. FIG. 19 is a flowchart illustrating a process of displaying the building limit frame 41 in the building limit display device 20a according to the second embodiment. In the second embodiment, after calculating the three-dimensional coordinates of the intersection 96 (step S7), the calculation unit 4a of the building limit display device 20a transmits the information of the building limit frame pattern corresponding to the calculated position of the point 94 to the line data 13a. Then, based on the acquired information on the building limit frame pattern, the corresponding building limit frame pattern is selected from the building limit data 12a (step S21). The calculation unit 4a acquires data of the selected building limit frame pattern from the building limit data 12a. Other processes in the building limit display device 20a are the same as the processes in the flowchart shown in FIG. 8 of the first embodiment.

  As described above, according to the present embodiment, in the building limit display device 20a, the building limit frame 41 set at an arbitrary point that the operator wants to check is selected from the plurality of building limit frames 41. Then, the building limit frame 41 is displayed in the set display color. Thereby, the building limit display device 20a can provide not only the relationship between an arbitrary point and the building limit frame 41, but also a display that can visually grasp the building limit frame at a position at an arbitrary point. .

  The configurations described in the above embodiments are merely examples of the contents of the present invention, and can be combined with other known technologies, and can be combined with other known technologies without departing from the gist of the present invention. Parts can be omitted or changed.

  1, 1a Data acquisition unit, 2 display unit, 3 operation reception unit, 4, 4a calculation unit, 20, 20a Building limit display device.

Claims (8)

A data acquisition unit configured to acquire three-dimensional point cloud information that is position information of a plurality of measurement points, information on a shape of a building limit, and information on a route;
An operation receiving unit that receives selection of a first point from the three-dimensional point cloud information;
A second position for displaying a reference position of the shape of the building limit is calculated based on the first point, and a vertical direction, a height difference direction between left and right rails, and a A calculation unit that calculates a rotation axis and a rotation angle of the building limit shape with respect to a stretching direction, and converts position information of the building limit shape based on the rotation axis and the rotation angle,
A display unit that displays the shape of the building limit after the position information conversion in which the reference position is adjusted to the second position;
An architectural limit display device comprising:   The building limit display device according to claim 1, wherein the display unit superimposes and displays the shape of the building limit after the position information conversion, the three-dimensional point cloud information, and the information on the route. The data acquisition unit acquires information on a plurality of architectural limit shapes, and information on a route in which the architectural limit shapes to be used by position are set,
The calculation unit refers to the information of the route, and selects a shape of the building limit to be used from the plurality of shapes of the building limit,
The building limit display device according to claim 1 or 2, wherein: A data acquisition unit configured to acquire three-dimensional point cloud information that is position information of a plurality of measurement points, information on a shape of a building limit, and information on a route;
An operation receiving unit that receives selection of a first point from the three-dimensional point cloud information;
A second position for displaying a reference position of the shape of the building limit is calculated based on the first point, and a vertical direction, a height difference direction between left and right rails, and a A calculation unit that calculates a rotation axis and a rotation angle of the building limit shape with respect to a stretching direction, and converts position information of the building limit shape based on the rotation axis and the rotation angle,
A building limit display control device comprising: A building limit display method in a building limit display device for displaying a building limit,
An acquisition step in which the data acquisition unit acquires three-dimensional point cloud information that is position information of a plurality of measurement points, information about the shape of the building limit, and information about the route;
An operation receiving unit that receives a selection of a first point from the three-dimensional point cloud information,
A first calculating step of calculating a second position for displaying a reference position of the shape of the building limit based on the first point;
A second calculation step in which the calculation unit calculates a rotation axis and a rotation angle of the shape of the building limit in the vertical direction, the height difference direction of the left and right rails, and the extension direction of the rail based on the information on the route. When,
A conversion step in which the calculation unit converts position information of the building limit shape based on the rotation axis and the rotation angle,
A display step of displaying a shape of the building limit after the position information conversion in which the reference position is adjusted to the second position,
A building limit display method characterized by including:   The building limit display method according to claim 5, wherein the display unit superimposes and displays the shape of the building limit after the position information conversion, the three-dimensional point group information, and the information of the route. In the obtaining step, the data obtaining unit obtains information on a plurality of architectural limit shapes, and information on a route in which the architectural limit shapes used by position are set,
In the second calculating step, the calculating unit refers to the information on the route when calculating the second position, and selects a building limit shape to be used from the plurality of building limit shapes.
The building limit display method according to claim 5 or 6, wherein: An architectural limit display control method in an architectural limit display control device that performs control to display an architectural limit,
An acquisition step in which the data acquisition unit acquires three-dimensional point cloud information, position information of a plurality of measurement points, information on a shape of a building limit, and information on a route;
An operation receiving unit that receives a selection of a first point from the three-dimensional point cloud information,
A first calculating step of calculating a second position for displaying a reference position of the shape of the building limit based on the first point,
A second calculation step in which the calculation unit calculates a rotation axis and a rotation angle of the shape of the building limit in the vertical direction, the height difference direction of the left and right rails, and the extension direction of the rail based on the information on the route. When,
A conversion step in which the calculation unit converts position information of the building limit shape based on the rotation axis and the rotation angle,
And a building limit display control method.

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