KR100452606B1 - System for creating and editing 3-dimensional spatial data - Google Patents

Abstract

PURPOSE: A system for creating and editing 3-dimensional space information is provided to enable an editor to control height values of objects by using an input module while the objects are seen in stereovision type through a stereovision module, thereby creating 3-dimensional space information while editing the information by considering the height values. CONSTITUTION: A stereovision module stereoscopically illustrates target objects to control height values of space information to be obtained, and creates a 3D stereovision model. An input module controls heights of the 3-dimensionally illustrated images from stereoscopic pairs, and inputs the determined heights. An edition module edits space information data including the height values. Coordinates information on the inputted space information data consists of x coordinates, y coordinates, and z coordinates.

Description

System for creating and editing 3-dimensional spatial data

The present invention relates to a system for editing three-dimensional spatial information when constructing spatial information data (GIS data), and using the various three-dimensional (3D) representation techniques, the mouse wheel / The present invention relates to a system for obtaining and editing a horizontal position and a height value by using an input device when an adjusted height is selected by using a hand wheel, a foot pedal, and the like.

GIS data is based on two-dimensional plane data, and the attribute information is linked to it for analysis. The three-dimensional information is treated as one of general attributes. The 3D data processing method treated as a general property enables easy and effective analysis in most cases, and there is a problem when inserting or editing a simple building or a linear structure existing on the same plane. I never do that. However, there are not only atypical buildings in the real world, but even linear structures such as roads do not have the same height.

Conventionally, the most widely used GIS data editing system includes AutoCAD and GeoDT, a program developed by the present applicant. In these programs, the height values of objects such as polylines and polygons are fixed to their default values when the object insertion function is executed, and changing the height values is applied to all points of the entire object collectively. There is no function to adjust the height value of each point. In addition, since only x and y coordinates of the object are used when performing a Trim / Join function, the linear objects having different heights are regarded as lying on the same plane and processed. Therefore, since the editing of structures such as three-dimensional intersections is not performed properly, three-dimensional editing of linear structures and features having height values is impossible.

Recently, in order to accurately reflect such atypical objects when constructing GIS data, the necessity of creating and editing three-dimensional spatial information is increasing. In the present invention, to develop a data structure, editing method and system for editing three-dimensional spatial information to represent the real world more accurately with spatial information.

Accordingly, an object of the present invention is to allow the editor to adjust the height value of the object using the input module while the target object is stereoscopically viewed through the stereoscopic module in order to generate and apply the three-dimensional data when constructing the GIS data. The present invention provides a system for generating spatial information and editing in consideration of a height value set when editing the generated spatial information.

1A and 1B are diagrams illustrating data of conventional two-dimensional spatial information.

2A is an exemplary data illustration of conventional three-dimensional spatial information.

Figure 2b is an exemplary data diagram of the three-dimensional spatial information of the present invention.

Figure 3a is an illustration of the result of the conventional data structure.

Figure 3b is an illustration of the result by the data structure of the present invention.

4 is a schematic diagram of a system in accordance with the present invention;

5 to 8 are conceptual illustrations for explaining each functional unit of the editing module of the present invention.

<Overview of the System According to the Invention>

In order to explain the data structure of the system according to the present invention, a brief description of the traditional data structure is as follows. In general, coordinate information of a figure is represented by x, y, and z, where z information is also used as an attribute value. In the existing data (z), the z value is applied to the same value even if it consists of several points in the case of the same object. In other words, when processed as such attribute information, the z value is not applied to each coordinate value. The z coordinate value entered as one of the attribute information exists only for an object having a uniform height value such as a contour line or a building as shown in Figs. 1A, 1B, and 2A, and all z values of these objects have the same value. (Parts indicated by circles in Figs. 1A, 1B and 2A). Since the contour object has a fixed height, the z-values of the polyline points are the same and there is no need to insert a value by changing the height. Therefore, editing work on these objects can be done easily by giving the same height value at the end without considering height.

On the other hand, in the three-dimensional data structure according to the present invention, the coordinate information is composed of the x coordinate of the horizontal axis, the y coordinate of the vertical axis, and the z coordinate of the height value (that is, (x, y, z having different values). ) location). Therefore, in the present invention, even if the same object may have a different z value for each point. In other words, even in the case of a linear terrain object such as a linear road or a river, and a polygonal object such as a three-dimensional intersection or a building, a different z value can be assigned to each point. Even if they are the same, if the z values are different, they are not processed at the same position during editing.

In this manner, the results of the three-dimensional processing on the contour terrain having the same height as the two-dimensional planes 1a and 1b according to the conventional method are shown in 2a. In Figure 2b it can be seen that the z height value limited by the onset is processed differently for each point.

3A and 3B are diagrams for comparing a z value according to a conventional data processing system and a z value according to the system of the present invention for a particular high road vehicle. In the conventional data structure of the high roadway in FIG. 3A, the z values are all 0, and the total distance (part of the ellipse in FIG. 3A) is calculated to be 73.98m, whereas in FIG. 3B, the method according to the method of the present invention is shown. As the data structure of the elevated roadway, the z value is set differently for each point, resulting in a total extension of 77.09m. Therefore, as shown in the above example, the difference in z value results in a difference of 3.11m in the total extension of the elevated roadway. This actually means that the elevated roadway is inclined differently in height.

<Configuration of the system and function description of each component according to the present invention>

4 is a schematic structural diagram of a three-dimensional spatial information editing system according to the present invention. In Fig. 4, according to the present invention, a stereoscopic module for generating a three-dimensional, stereoscopic stereoscopic model by three-dimensionally showing an object in order to adjust the height value of spatial information (GIS data) to be obtained, and the stereoscopic vision From the three-dimensional pair obtained in the module, an input module for inputting the determined height by adjusting the height of the three-dimensional illustrated left and right image, and an editing module for editing the input data including the height value.

Here, the stereoscopic model refers to such a three-dimensional model generated for the three-dimensional visual effect, and a stereopair refers to two overlapping pictures for displaying stereoscopic.

Examples of 3D representation techniques that can be used in the stereoscopic module include the following.

(1) Polarization Screen / Polarization Glasses Usage Technique-In this system, 3D display environment is created through 3D supported graphics card, 3D supported monitor, 3D supported polarized screen / polarized glasses, etc. Through the stereoscopic model can be generated.

(2) Screen dividing technique-It is possible to compose a 3D urban environment by dividing the screen into two stereoscopic pairs, showing them as two screens, and using two special images to show two images as one screen.

(3) Color stereoscopic technique-By dividing the screen into two stereoscopic pairs and image each image into two different colors, you can see the three-dimensional screen by using glasses with different colors on both left and right eyes.

The input module is a means for the editor to directly adjust the height of the 3D image obtained by the various methods described above and input a desired height value into the system. For example, an input device such as a mouse wheel / handwheel or a foot pedal may be used. . More specifically, according to the present invention, when inserting an object as in the prior art, the mouse is moved at each point to adjust the x and y coordinate values, and the height value (z value) is selected and adjusted using the mouse wheel. Different height values can be applied to each point.

4 again, the functional configuration of the input module will be described with reference to Table 1. FIG. Table 1 shows the functions of the input module of the three-dimensional information editing system according to the present invention in comparison with the functions of the conventional two-dimensional information editing system.

Function name 2D 3D Point Generate point input data Same as left Line Create line input data Create line input data by adjusting z value for each point Polygon Generate polygon input data Generate polygon input data by adjusting z value for each point Circle Generate Circle Input In 2D, only the center point and radius are needed, but in 3D, the coordinates of a point that form the center and radius are required. Text Generate text input Position by x, y, z values Symbol Generate symbol input data For the position of the tilted symbol, you must specify the center point and the angle of one extension line as the original object.

Point input data generation unit for generating point input data of point object, Line input data generation unit for adjusting and applying z value for each point of linear object, Polygon object Polygon input data generation unit for adjusting the z value for each point of the input, a section for generating input data of a circular object, and a text input data generation unit for generating text object input data such as characters And a section for generating input data of a symbol object. Table 3 shows the features of the three-dimensional spatial information editing system according to the present invention as compared with the conventional two-dimensional system.

Meanwhile, in addition to the input functions included in the input module, a function of editing the input data may be further included. This is shown in Table 2.

Function name 2D 3D Copy Copy selected entity to desired location Change z value using input device when copying Move Move selected material to desired location Change z value using input device when moving Rotate Rotate the selected material by the desired angle It is possible to position the center of rotation by changing the z value. Delete Delete selected material Same as left Scale Resize selected material by percentage Different sizes can be adjusted for x, y and z axes

The basic functions of the Copy, Move, Rotate, Delete, and Scale functions of Table 2 are obvious to those skilled in the art, and according to the present invention, since the height value z is included in the input entity, the values of z are considered in implementing the functions. .

4, the editing module provides a function for the editor to edit the 3D spatial information input by the input module. This includes the Extend, Trim, Join, Break, and Vertex functions as shown in Table 3 below. In the present invention, since the z value is included in the input entity, each processing condition includes a condition for the z value. As before, the functions of the conventional two-dimensional information editing system are compared with the functions of the three-dimensional information editing system according to the present invention.

Function name 2D 3D Extend A function that extends when the length of an entity such as a line or line string is insufficient to connect to a specific line. According to the present invention, when a certain line group is extended, a function subdivided into "when intersecting correctly", "below specific z value", "above a certain z value", and "extend which does not consider z value" is provided. to provide. Trim Ability to cut an entity such as a line / line string by referring to its intersection with another entity. In the present invention, when trimming a specific line group, a function subdivided into " when accurately intersecting ", " less than or equal to a specific z value ", " more than or equal to a specific z value " to provide. Join Ability to combine entities such as line / line strings into one entity by various conditions In the present invention, when joining a specific line group, a function that enables integrated joining of "objects below a certain z value" and "objects above a certain z value" is possible according to a user's needs. Break Ability to short entity such as line / line string at desired position The present invention provides a function of shorting z values according to a user's needs when breaking a specific line group. Vertex Move, add, and delete entity vertices In the present invention, when moving or adding a specific line group or polygon group, a z value can be moved and added according to a user's needs.

Hereinafter, each of the above editing functions will be described in detail.

Extend function

In the present invention, when extending a plurality of lines, a function such as "z value consideration", "below a specific z value", "above a specific z value", and "extend which does not consider z value" can be divided according to user's needs. to provide. An example of each case will be described with reference to FIG. 5 as follows.

Extend Considering z Value-When extending Lines 1 to 5 with Line 6 in FIG. 4, only Line 3 with z = 2 is extended.

Extend below a certain z value Extend-It is only extended for a line object whose z value of the contact that is met at extend is less than a certain z value when satisfying all when the Extend is performed without considering the z value when performing Extend for multiple objects. (If lines 1 to 5 in FIG. 5 are line 6 and the threshold value is z = 2, only lines 1, 2, and 3 are extended).

Extend above a certain z value Extend-It is only extended for line object whose z value of contact that is met at extend is higher than a certain z value when satisfying all when extending when not doing z value when extending for several objects. (If lines 1 to 5 in Fig. 5 are extended with line 6 and the threshold is z = 2, only lines 3, 4, and 5 are extended).

Extend without considering the z value-Extend is performed without considering the z value when Extend is performed on multiple objects (line 1, 2, 3, 4, 5).

Trim function

In the present invention, when trimming a plurality of lines (multi-Trim), "z value consideration", "specific value z value", "specific value z value", "extension not considering z value" according to user's needs. Provide granular functionality. An example of each case will be described with reference to FIG.

Trim considering z value-Trim only lines 3 with z = 2 when trimming lines 1 to 5 with line 6 in FIG.

Trim below a specific z value-Trim only for line objects whose contact z value is less than a certain z value. (If the threshold value is z = 2 when trimming line 6 to line 6 in Fig. 6, only trim lines 1, 2, and 3)

Trim more than a certain z value-When trimming on multiple objects, if the trim is satisfied without considering the z value, the trim meets only the line object whose contact z value when trim is higher than a certain z value. (If the threshold value is z = 2 when trimming line 6 to line 6 in Fig. 6, only trim lines 3, 4 and 5)

Trim without taking into account z values-When trimming on multiple objects, trim without taking into account z values (lines 1, 2, 3, 4, 5 when trimming lines 1 to 5 with line 6 in FIG. Trim)

-Join function

In the present invention, when joining a large number of lines (multi-Join), "z value consideration", "specific z value or less", "specific z value or more", and "z value are not considered" according to the user's needs. , "Join along specific line" is provided. An example of each case will be described with reference to FIG.

Join considering z value-Join line 1 ~ 5 to line 6 and join line 6 with z = 2.

Join below a certain z value-When joining multiple objects, all of them are satisfied when joining without considering the z value. Join only for line objects whose z value of the contact encountered during join is below a certain z value. (If the threshold value is z = 2 when joining line 6 to line 6 in Fig. 7, join only line 1, 2, 3)

Join more than a specific z value-When joining multiple objects, all of them are satisfied when join is performed without considering z value. Join only for line objects where the z value of contact that meets at join is greater than a certain z value. (When line 1 ~ 5 joins line 6 with z = 2, only line 3, 4, and 5 are joined.)

Join without considering z value-Join is performed without considering z value when joining multiple objects (line 1, 2, 3, 4, Join 5)

Join that defines a specific line-When joining a number of objects, join only a specific line. (If you join line 1 ~ 5 in line 6 and specify a specific line 3 when joining line 6, line 3 and line. Join 6)

-Break function

The present invention provides a function of shorting a desired position by considering only a z value according to a user's need when breaking a line group. Referring to FIG. 8, if there is a line having a height value z of 0 to 7 on the same x and y planes, and wants to break a specific z value of 2 to 6, as shown in FIG. 8. Select a point with a z value of 2 and a point with a z value of 6 to short the two objects (ie, the first object is an object with z = 0 ~ 2 and the second object is an object with z = 6 ~ 7).

Additional Components of the System According to the Present Invention

In addition to the functions described above, utility functions that may be additionally included in the present invention are shown in Table 4 below. As described above, the comparison with the functions of the existing two-dimensional information editing system will be described.

Function name 2D 3D Calculation Ability to view information such as area, distance and angle of entities such as line / line strings and polygons In the present invention, since the z value is included in the data, the user can view information such as the area, distance, angle, etc. including the z value as needed for the specific line group or polygon group. Intersection Ability to shorten points where x and y values intersect entities such as line / line strings. In the present invention, since the z value is included in the data, a function of shorting a point at which a z value is also crossed, not a point at which only a specific line group crosses x and y is included.

The editing system according to the present invention can be embodied in one piece of software and recorded in a storage medium, which is also included in the scope of the present invention.

According to the present invention, it is possible to insert objects having different heights at the same points such as a three-dimensional intersection or an overpass, and to edit an object in consideration of the height of the object. According to the present invention, since the 3D object can be edited from the aerial photograph drawing, a separate 3D editing process can be omitted, resulting in a time saving effect and economical cost according to economic efficiency.

Claims (12)

In a system for editing three-dimensional spatial information when constructing spatial information data (GIS data), A stereoscopic module for generating a three-dimensional stereoscopic model by three-dimensionally drawing a target object to adjust a height value of spatial information (GIS data) to obtain; An input module for inputting the height determined by adjusting the height of the three-dimensional illustrated image from the stereoscopic pair obtained in this stereoscopic vision module; It includes an editing module to edit the entered spatial information data, including the height value, And coordinate information of the spatial information data inputted by the input module is composed of an x coordinate on the horizontal axis, a y coordinate on the vertical axis, and a z coordinate on the height value. According to claim 1, wherein the stereoscopic module 3D display environment using a 3D-capable graphics card, 3D-supported monitor, 3D-supported polarized screen / polarizing glasses, etc., and stereoscopic model is generated from two photo pairs taken from two points of the same area. Dimensional Spatial Information Editing System. According to claim 1, wherein the stereoscopic module A three-dimensional spatial information editing system, characterized by dividing the screen into two stereoscopic pairs to show two screens and using a special screen to show two images on one screen to construct a three-dimensional urban environment. According to claim 1, wherein the stereoscopic module Three-dimensional space, characterized by dividing the screen into two three-dimensional pairs to image each image in two different colors so that the user can see the three-dimensional screen by using glasses with different colors on both the left and right eyes. Information editing system. The method of claim 1, wherein the input module Means for directly adjusting the height of the three-dimensional image obtained by the stereoscopic module and inputting a desired height value into the system, When inserting an object, move the mouse at each point to adjust the x, y coordinate value, and use the mouse wheel to adjust the height value (z value) to select different height values for each point of the object. 3D spatial information editing system. The method of claim 5, wherein the input module Point input data generation unit for generating point input data of point object, Line input data generation unit for adjusting and applying z value for each point of linear object, Polygon object Polygon input data generator for adjusting the z-value for each point of the input, circular object data generator, text input data generator for generating text object data, and symbol object 3) Spatial information editing system, including input data generation unit. The method of claim 1, wherein the editing module It includes an Extend function that extends when the length of an entity such as a line / line string is insufficient and connects to a specific line. This includes three-dimensional, characterized in that it includes the functions "considering z value", "below specific z value", "above a certain z value", and "extend not considering z value" when extending a plurality of lines. Spatial information editing system. The method of claim 1, wherein the editing module It includes a trim function that cuts an entity such as a line / line string by referring to an intersection with another entity, This includes three-dimensional, characterized in that when trimming a plurality of lines, it includes a "z value consideration", "specific z value or less", "specific z value or more", "extension does not consider z value" function Spatial information editing system. The method of claim 1, wherein the editing module It includes a join function that combines entities such as line / line strings into one entity based on various conditions. This includes "z value consideration", "below specific z value", "more than specific z value", "when not considering z value" when joining a large number of lines, and "feature joining to a specific line". 3D spatial information editing system, characterized in that. The method of claim 1, wherein the editing module It includes a break function that shorts an entity such as a line / line string at a desired position. It includes a function of shorting the desired position in consideration of the z value when breaking the line group, 3D spatial information editing system. The method of claim 1, wherein the editing module A vertex function for moving, adding, and deleting entity vertices, wherein a z-value can be moved and added when vertices are moved or added to a specific line group or polygon group. A computer recording medium that records a three-dimensional spatial information editing system according to any one of claims 1 to 11.