KR100283617B1 - 3D Virtual Space Construction System - Google Patents

Abstract

This invention makes it easy for non-experts to build and operate their own virtual worlds, and makes it easy for designers and web content creators in various fields to create digital content.The library of data of virtual objects and virtual spaces (B16) ) Authoring tool (B17) for authoring a three-dimensional virtual space while browsing and previewing in the (B17), the authoring tool (B17) by activating the library (B16) stored in various virtual spaces and virtual objects browsing and preview ( select the input tool into the authoring tool (B17), select one of the input virtual objects, rotate and reduce the zooming, and edit the object to have an appropriate posture and size. Layout tools that move and place the edited virtual object in the optimal position, and drawings from various viewpoints when editing the virtual object Provides an observation tool, and, building a three-dimensional virtual space, comprising: a storage for storing tool to give the final virtual space and configure a unique object ID and a property system 10 to provide a plurality of view-point window.

Description

3D Virtual Space Construction System

The present invention relates to a three-dimensional virtual space construction method, and more particularly, to a production method and a system capable of operating the space that can be used to create a realistic space efficiently and intuitively using virtual reality.

3D virtual space construction is emerging as a necessary technology to express existing internet service as human-centered 3D information and break away from the 2D information representation method using the existing world wide web (WWW) -based hypertext markup language (HTML). VRML 2.0 is now a standard for defining three-dimensional space on the Internet, and is being referenced in the development of authoring tools and browsers. Since this three-dimensional virtual space is a reflection of the three-dimensional space of the real world where humans live, it can be said to be a very natural way for Internet users to use it as an interface for computer interaction and information service. With the development of computer graphics and widespread use of information services based on WWW and communication networks, the demand for such systems is increasing and developing rapidly.

In addition, as virtual reality equipments are rapidly developed and spread in recent years, the use of such virtual reality equipments as an interface device for human-computer interaction has become important, and the importance of virtual reality has emerged. In addition, the development of computer vision technology, Internet protocols, high performance graphics processing and acceleration technology has made applications available on high-end, high-performance graphics workstations even on low-cost PCs or workstations.

3D virtual space construction technology is not only the process of modeling the existing world and the concept contained in it, but also digitizing it in a computer.It is also a foundation and core technology for the ultimate user interface technology that general users can use information services without special knowledge. I started getting recognition. The main core technologies are the method of changing the properties of existing model data, the scene graph processing to construct and dynamically change the hierarchical structure of the objects composing the scene, the authoring function to perform the authoring work in the virtual space, Texture mapping, real-time rendering, and graphic library processing to enable such things to increase realism, and research on such core technologies is being actively conducted.

Therefore, the present invention is intended to enable a user without expertise in virtual reality to create a realistic three-dimensional virtual space through simple authoring techniques.

1-A block diagram for explaining the operation using the three-dimensional virtual space construction system according to the present invention

2 to 1 are block diagrams for explaining the details of the conversion and authoring operation in the block diagram shown in FIG.

3-2 is a flow chart for explaining the authoring work illustrated in FIG.

4 to 2 are block diagrams for explaining viewpoint switching between virtual spaces and virtual objects in the authoring work illustrated in FIG.

5 is a block diagram illustrating access and data transmission through a web browser for a three-dimensional virtual space construction system according to the present invention.

According to the present invention, a modeling tool for modeling virtual objects and virtual spaces, a conversion tool for converting and adapting the modeled virtual objects and virtual spaces to a VRML file format, and storing the converted virtual objects and data of the virtual spaces in a library A three-dimensional virtual space construction system is provided that includes a storage tool for performing the operation and an authoring tool for authoring a three-dimensional virtual space while browsing and previewing the stored library.

The authoring tool activates a library in which various virtual spaces and virtual objects are stored, selects and browses and previews them, and inputs them into the authoring tool, and selects and rotates one of the input virtual objects. Repeatedly zooming in and out, the object editing tool having an appropriate posture and size, a layout tool for moving the appropriately edited virtual object and placing it in the optimal position, and a plurality of drawings that display drawings from various viewpoints when editing the virtual object. It is preferable to include an observation tool that provides a viewpoint window of and a storage tool that stores the final virtual space and the configuration object with unique IDs and attributes.

According to the present invention, there is provided a recording medium storing a program for operating the three-dimensional virtual space building system, the program authoring a three-dimensional virtual space while browsing and previewing in a library of virtual objects and data of the virtual space The authoring tool includes an authoring tool, which activates a library in which various virtual spaces and virtual objects are stored, selects while browsing and previewing the input tool, and selects one of the input virtual objects. (picking) rotates and zooms in and out to have an appropriate posture and size, an object editing tool that moves an appropriately edited virtual object and places it in an optimal position, and various viewpoints when editing a virtual object. Observation tool that provides multiple viewpoint windows for displaying drawings, and final virtual space Configuration objects give a unique identity and attributes to a storage for storing tools.

Preferably, the conversion tool includes a conversion tool for converting a virtual object and a file in a virtual space into a VRML file, and an adaptation tool for supplementing and fitting the lost information in the conversion process to the converted VRML file.

The observation tool is a display tool for displaying the current virtual space from the user's point of view in the main window, a mapping tool for generating a map by imaging a plan view of the virtual space through a virtual camera, and an arbitrary position in the side window. It is preferable to include a cross-sectional display tool for displaying the cross section to the user, and a collision detection tool for detecting the collision between the virtual objects in the arrangement process to display to the user.

In addition, the three-dimensional virtual space construction system is a list transmission tool for transmitting the list information of the ID of the virtual space and the virtual object to a remote user accessed through a web browser, and the data of the virtual space and the virtual object by the user's download request The data transmission tool may additionally include a data transmission tool that transmits the data, and the data transmission tool has a download order in the order of the objects from the virtual space, and when the data volume of the virtual space information is large, geometrical information, color, and texture information of the space. It is preferable to set it as follows.

Detailed Description of the Preferred Embodiments

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the three-dimensional virtual space construction system and program according to the present invention.

Here, the system and program of this embodiment will be described as the user builds a three-dimensional virtual space.

1 schematically illustrates a system for building a three-dimensional virtual space by applying a virtual reality technology. In the drawings, the letters B in the quotation marks B11, B12, etc. mean a block. The three-dimensional virtual space construction system 10 shown in FIG. 1 includes a modeling tool for modeling virtual objects and virtual spaces B12 and B13. Such modeling tools use an external modeler (B11) such as existing CAD modeling tools or 3D MAX widely used in PCs. It also includes a conversion tool for converting modeled virtual objects and virtual spaces into a VRML (Virtual Reality Modeling Language) file format for adaptation (B14). Such a conversion tool may use its own VRML converter or a separate conversion module. In addition, the storage tool stores the converted virtual object and data of the virtual space in a library (B16). The authoring tool authors (B17) the three-dimensional virtual space while browsing and previewing in the stored library. The authored three-dimensional virtual space can be confirmed by walking through the existing browser.

FIG. 2 shows a block diagram for explaining the operation of the conversion tool B14 shown in FIG. The main task of the conversion tool (B14) is to change the file format and change the attributes that can be changed by the user for the file consisting of information about the virtual object and the virtual space individually generated by the external modeler (B11). The converted final file is a VRML file B141 that can be directly used to display a three-dimensional virtual space on a screen and generate an internal node hierarchy. However, during the conversion process, a complete conversion is not performed and some information such as a light source or a texture is lost. Therefore, prior to libraryizing and storing the converted VRML file, an adaptation operation is required to supplement (B142) such loss information again. In addition, the user's intervention (B142) is required for the converted data to maintain a consistent coordinate system and relative size.

3 is a flow chart for explaining the authoring process using the authoring tool (B17). In step 11 (S11), the user activates a library in which various virtual spaces and virtual objects are stored and first selects a desired virtual space through browsing and preview. In step 12 (S12), the virtual object to decorate the virtual space is searched and input in the authoring tool. The input virtual object is initially placed in a position that can be easily observed by the user in the virtual space, and in step 13 (S13), the user selects the input virtual object (picking) and repeats the rotation and reduction to appropriately posture and Have a size. In step 14 (S14), the virtual object appropriately edited in step 13 (S13) is moved, placed in an optimal position, and the editing attribute is given. When editing the virtual object in step 13 (S13), it is difficult to recognize the information about the depth of the three-dimensional space displayed on the two-dimensional plane, so as to provide a viewpoint from various viewpoints as shown in FIG. . The final virtual space and the constituent objects that have been edited, placed and assigned are stored with a unique ID.

FIG. 4 is a block diagram illustrating a process of automatically generating a user-centered viewpoint in order to facilitate a reduction and enlargement operation in step 13 (S13) of FIG. In the main window (B21) it is possible to observe the current virtual space from the user's point of view, and automatically generates a map by imaging the floor plan of the same virtual space through a virtual camera. The map function in the main window identifies the structure of the entire virtual space and serves as a milestone. The side view B24 is used to refer to the height information when the virtual object is placed on top of another virtual object, so that the cross section can be viewed at an arbitrary position. Performing a batch operation using the object position information represented by visual information is a delicate task, and thus facilitated the batch operation by providing a collision detection function between objects. During the execution of this series of processes, the spatial change result updated to the present time at the appropriate time point is updated to each viewpoint window B22, B23, or B24.

5 illustrates a step in which a remote user downloads a virtual space produced through the above-described process and reconstructs a scene on his computer. When the users 31 and 32 make a connection request to the address of the server 34 having the three-dimensional virtual space data linked through the web browser 33, the server 34 configures the virtual space so as to configure the selected virtual space. And list information of the ID of the virtual object. The users 31 and 32 download a virtual space data and an object scattered on the server 34 by referring to the transmitted list and compose a scene. In order to download the virtual space and object information, the order is to be in the order of virtual space and object.In the case of large amount of data in the virtual space information, the data is downloaded in the order of geometric information, color, and texture information of the space. It improves the existing download method by making it appear on the screen immediately.

By using the three-dimensional virtual space construction system and the program that drives the system according to the present invention, non-experts can easily build and operate their own virtual world, and designers and web content producers in various fields facilitate digital content. It can build a development environment that can be manufactured easily. Therefore, this invention is expected to greatly contribute to the activation of the high speed information communication network.

Claims (14)

In the system used to build a three-dimensional virtual space, A modeling tool for modeling virtual objects and virtual spaces, A conversion tool for converting modeled virtual objects and virtual spaces into VRML file formats and adapting them; A storage tool for librarying and storing the converted virtual object and data of the virtual space, A three-dimensional virtual space construction system comprising an authoring tool for authoring three-dimensional virtual space while browsing and previewing in a stored library. The method of claim 1, The conversion tool includes a conversion tool for converting a virtual object and a file in a virtual space into a VRML file, and an adaptation tool for supplementing and adapting the lost information in the conversion process to the converted VRML file. Space construction system. The method of claim 1, The authoring tool activates a library in which various virtual spaces and virtual objects are stored, selects and browses and previews them, and inputs them into the authoring tool, and selects and rotates one of the input virtual objects. Repeatedly zooming in and out, the object editing tool having an appropriate posture and size, a layout tool for moving the appropriately edited virtual object and placing it in the optimal position, and a plurality of drawings that display drawings from various viewpoints when editing the virtual object. A three-dimensional virtual space construction system comprising an observation tool for providing a viewpoint window of the, and a storage tool for storing the final virtual space and the configuration object to give a unique ID and attributes. The method of claim 3, wherein The input tool is a three-dimensional virtual space construction system, characterized in that the initial position of the virtual object to be input to a position that can be easily observed by the user in the virtual space. The method of claim 3, wherein The observation tool is a display tool for displaying the current virtual space from the user's point of view in the main window, a mapping tool for generating a map by imaging a plan view of the virtual space through a virtual camera, and an arbitrary position in the side window. 3D virtual space construction system comprising a cross section display tool for displaying the cross section to the user, and a collision detection tool for detecting the collision between the virtual objects in the layout process to display to the user. The method according to any one of claims 3 to 5, 3D virtual space construction system, characterized in that the updated spatial change results can be stored at any time in all viewpoint windows. The method according to any one of claims 1 to 3, List transmission tool for transmitting list information of ID of virtual space and virtual object to remote user accessed through web browser, and data transmission tool for transmitting data of virtual space and virtual object by user's download request Including, The data transmission tool is a download order from the virtual space to the object, and if the amount of data in the virtual space information, the three-dimensional virtual space construction system, characterized in that in the order of geometric information, color, texture information of the space. In a recording medium storing a program used to build a three-dimensional virtual space, The program includes an authoring tool for authoring three-dimensional virtual space while browsing and previewing in a library of data of virtual objects and virtual space, The authoring tool activates a library in which various virtual spaces and virtual objects are stored, selects and browses and previews them, and inputs them into the authoring tool, and selects and rotates one of the input virtual objects. Repeatedly zooming in and out, the object editing tool having an appropriate posture and size, a layout tool for moving the appropriately edited virtual object and placing it in the optimal position, and a plurality of drawings that display drawings from various viewpoints when editing the virtual object. A recording medium having a three-dimensional virtual space building program, characterized in that it comprises an observation tool for providing a viewpoint window of the, and a storage tool for storing the final virtual space and the configuration object to give a unique ID and attributes. The method of claim 8, And a conversion tool for converting and adapting the virtual objects and the virtual spaces modeled by various modeling tools to the VRML file format, and a storage tool for librarying and storing the data of the converted virtual objects and the virtual spaces. Recording medium storing program for 3D virtual space construction. The method of claim 9, The conversion tool includes a conversion tool for converting a virtual object and a file in a virtual space into a VRML file, and an adaptation tool for supplementing and adapting the lost information in the conversion process to the converted VRML file. Recording medium storing program for building space. The method according to any one of claims 8 to 10, The input tool is a recording medium storing a three-dimensional virtual space building program, characterized in that the initial position of the virtual object to be input to a position that can be easily observed by the user in the virtual space. The method according to any one of claims 8 to 10, The observation tool is a display tool for displaying the current virtual space from the user's point of view in the main window, a mapping tool for generating a map by imaging a plan view of the virtual space through a virtual camera, and an arbitrary position in the side window. And a cross section display tool for displaying a cross section to a user, and a collision detection tool for detecting a collision between virtual objects in a layout process and displaying the cross section to a user. The method according to any one of claims 8 to 10, A recording medium storing a three-dimensional virtual space building program, characterized in that the updated spatial change results can be stored at any time in all viewpoint windows. The method according to any one of claims 8 to 10, The program is a list transmission tool for transmitting the list information of the ID of the virtual space and the virtual object to a remote user accessed through a web browser, and a data transmission tool for transmitting data of the virtual space and the virtual object at the request of the user Additionally includes The data transfer tool is a download order from the virtual space to the object, and if the amount of data in the virtual space information, the three-dimensional virtual space building program, characterized in that the order of geometric information, color, texture information of the space Recorded media.