JP5768280B2 - File processing method and storage medium for long-term storage of data file - Google Patents

Description

  The present invention relates to a file processing method, a file processing apparatus, and a storage medium for storing a data file for a long period of time, and more specifically, enables long-term storage and reuse of a shape description file that records the shape of a building such as a house. It is related to technology.

  With the recent development of IT technology, digitalization of information is rapidly progressing, and establishment of digital data long-term storage technology is required. In particular, in the field of architecture, the shape of houses, topography, buildings, physical infrastructure, etc. is three-dimensionalized using a CAD (Computer Aided Design) system, and the design etc. is performed using data that records this three-dimensional shape. Has become mainstream. If these three-dimensional data created at the time of construction of a house, etc. can be stored for a long time beyond the life of the house, etc., it should be effectively utilized for future expansion / renovation / maintenance, sales / rental, disaster recovery, etc. Is also possible.

  On the other hand, as technical problems that become a bottleneck in storing and reusing digital data for a long time, (1) development of a long-life recording medium capable of storing digital data for a long time, (2) a new recording format ( There is a problem that the recording format becomes obsolete / legacy with the spread of so-called file formats.

  In particular, looking at the above problem (2) regarding the above-mentioned 3D data on houses, etc., the recording format of 3D data files has been increasing, and there are already over several hundred recording formats. ing. Therefore, the recording format that was available at the time of creation of the data is not limited to other recording formats that have become widespread during the long-term storage process. May already be obsolete and the data itself cannot be read.

  In general, when such a recording format becomes obsolete, a recording format conversion program (so-called file converter) is used to change to a recording format supported by many CAD systems when this three-dimensional data file is used. By appropriately converting, it is possible to reuse the three-dimensional data in the same period. Therefore, if a 3D data file such as a house is stored for a long period of time, if a program (file converter) that converts the recording format is stored with the data body, these 3D data files will be used in the future when they are used. Can be used after being read and converted into a recording format usable at that time.

  However, a converter execution format (for example, a binary file having an extension “.exe” in MS-DOS (registered trademark), which is an OS widely used in 1980 to 2000) as a file converter entity is also available. Since it is a program that operates on software such as concrete hardware and OS (basic software), unless it is updated in accordance with changes in the OS, the converter itself for past data will be a thing of the past. It may become impossible to use.

  For conventional two-dimensional data such as blueprints, a method of drawing with durable ink on paper having a long life, or taking a picture on a microfilm and storing it can be adopted. However, the three-dimensional data cannot be stored as it is like the sound source or moving image data, and must be stored as a file on some digital recording medium.

  As a technique for solving such a problem, a CAD data long-term storage method and a long-term storage system described in Patent Document 1 have been proposed. The CAD data long-term storage method includes a procedure for designing a converter for converting data related to a selected item of various CAD software data into long-term storage data, and the converted long-term storage data on a display device of various computer systems. A procedure for designing a viewer to be displayed, a step of storing a rule including long-term storage, a step of creating a converter for converting desired CAD software data into long-term storage data based on the rule, and a desired CAD using the converter Converting software data into long-term storage data, and storing the long-term storage data for a long period of time, and in particular by storing the rules together with the long-term storage data, even if CAD software, hardware and OS are changed CAD software can be used by various computer systems No, there is a long-term storage data can be conveniently and reliably displayed.

  Patent Document 2 discloses a long-term storage method for virtual data. In such a long-term storage method, a plurality of virtual data long-term storage processing rules are applied to the backup inventory, and a virtual data long-term storage inventory is generated based on at least a part of the result of applying the rules. Then, a virtual data long-term storage inventory and a backup image associated with the data storage expiration date are determined, and the backup image is converted into a data long-term storage image. This makes it possible to combine backup processing that acquires data that is retained for a relatively short period of time to facilitate failure recovery, and long-term data storage processing that stores data for a longer period, while reducing the data capacity. And it can be done.

JP 2001-306636 A JP 2009-104594 A

  In the CAD data long-term storage method described in Patent Document 1, long-term data is stored together with long-term data, so that long-term data can be reliably displayed without depending on CAD software or hardware. However, this rule is to modify only the standard that can convert 3D data created and saved with various CAD software into text-based standard data and select only items suitable for long-term storage. As data to be stored for a long period of time, only items selected according to such rules are to be stored. That is, all items defined by CAD data cannot be stored for long-term storage, and the originality of the data may not be maintained completely.

  In addition, the virtual data long-term storage method described in Patent Document 2 does not mention the problem related to the obsolescence of the data recording format as described above, and in the stage of reading and using long-term stored data, There is still a possibility that the recording format of the data has become obsolete.

  The present invention has been made to solve such a problem, and in the long-term storage of a data file recording the shape of a building such as a house, while maintaining the originality of the data file to be stored, It is an object of the present invention to provide a file processing method, a file processing apparatus, and a storage medium that can reliably reuse a file without being affected by the obsolete recording format.

In order to achieve the above object, the invention according to claim 1 stores a three-dimensional data file in which a three- dimensional shape of a building such as a house is recorded in an arbitrary format using a CAD system for the purpose of long-term storage. A file processing method comprising: a storage step of storing in a medium; and a use step of taking in and using a three-dimensional data file stored in the storage medium for a long period of time in a file processing apparatus, wherein in the storage step, the three-dimensional when saving data files in the storage medium, the file processing device is an interpretable, and the recording format of the three-dimensional data files, to other recording formats available in the use step of the three-dimensional data file the format definition file that defines the processing for converting, saved in the storage medium together with the three-dimensional data file, the format definition file Acquires a shape component constituting a three-dimensional shape of a building described by the three-dimensional data file, defines processing for redefining the shape component in the other recording format, and saves the shape component The medium is composed of a storage medium that records data by finely processing glass suitable for long-term storage of digital data. This storage medium is an electronic building tag and is attached to a building described by the three-dimensional data file. It is characterized by storing .

A second aspect of the present invention is the file processing method according to the first aspect, wherein in the use step, the execution format generation means of the file processing apparatus interprets the format definition file captured in the file processing apparatus. Generating a converter execution format for converting the recording format of the three-dimensional data file into the other recording format, and the recording format conversion means of the file processing device executes the generated converter execution format. And converting the recording format of the three-dimensional data file into the other recording format .

According to a third aspect of the present invention, there is provided a storage step of storing a shape description file in which a shape of a building such as a house is recorded in an arbitrary format using a CAD system in a storage medium for the purpose of long-term storage; A storage medium used in a file processing method having a use process of taking a shape description file stored for a long period of time into a file processing apparatus, and finely processing glass suitable for long-term storage of digital data The shape description file and a format definition file that defines a process for converting the recording format of the shape description file into another recording format that can be used in the use process are stored together, and the shape It is characterized by being configured as an electronic building tag that can be stored with the building described in the description file .

The present invention is as described above. According to the first aspect of the present invention, the file processing apparatus can interpret the three-dimensional data file in the storage step when storing the three-dimensional data file in the storage medium, and keep a record format of the three-dimensional data file, the format definition file that defines the processing for converting to other recording formats available in the use step of the three-dimensional data file, the storage medium together with the three-dimensional data file The format definition file defines a process for acquiring a shape component constituting the three-dimensional shape of the building described by the three-dimensional data file and redefining the shape component in the other recording format. The storage medium is a storage medium that records data by finely processing glass suitable for long-term storage of digital data. The storage medium as an electronic building label, so saving comes to building described by the three-dimensional data file, in the use step of the three-dimensional data file, interprets the format definition file stored in the storage medium Thus, the recording format of the three-dimensional data file can be converted. As a result, the file can be reliably reused without being affected by the obsolete recording format while maintaining the originality of the three-dimensional data file.
In addition, it is possible not only to perform accurate recording format conversion in units of shape components such as surfaces, coordinates, and vertices that make up 3D shapes, but also 3D data files and formats for each building such as a house. The electronic building tag where the definition file is saved can be saved.

According to the second aspect of the present invention, in the utilization step, the execution format generation means of the file processing device interprets the format definition file captured in the file processing device, and changes the recording format of the three-dimensional data file to the other A step of generating a converter execution format for converting to a recording format, and a step of using the recording format of the three-dimensional data file by the recording format conversion means of the file processing device executing the generated converter execution format And converting the recording format of the three-dimensional data file in the use process can be performed accurately and reliably.

According to a third aspect of the present invention, a storage step of storing a shape description file in which a shape of a building such as a house is recorded in an arbitrary format using a CAD system in a storage medium for long-term storage, and the storage A storage medium used in a file processing method having a shape processing file stored in a medium for a long period of time and used in a file processing apparatus, and finely processing glass suitable for long-term storage of digital data Thus, the shape description file and a format definition file that defines a process for converting the recording format of the shape description file into another recording format that can be used in the use process are stored together, Since it is configured as an electronic building tag that can be stored attached to the building described in the shape description file, The file can be reliably reused without being affected by the obsolete recording format while maintaining the original shape description file.
In addition, a large-capacity shape description file or format definition file can be stored for a long period of time, and a shape description file and a format definition file can be stored for each building such as a house.

It is explanatory drawing which shows the outline | summary of the file processing method concerning one embodiment of this invention. It is the list which extracted a part of creation example of the format definition file (metafile) preserve | saved at a preservation | save medium in a preservation | save process same as the above. It is a figure which shows the general view of the electronic building tag which is a structural example of a preservation | save medium same as the above. It is a block diagram which shows the structural example of the file processing apparatus which concerns on one embodiment of this invention. It is a flowchart which shows the outline | summary of the process which a file processing apparatus same as the above performs in a utilization process. It is a figure which shows the example of the command prompt screen in the implementation example 1 of a file processing apparatus same as the above. It is a figure which shows the example of the dialog screen in the implementation example 2 of a file processing apparatus same as the above. It is a figure which shows the example of a display of the three-dimensional figure after the recording format conversion in the implementation example 2 of a file processing apparatus same as the above. It is a flowchart regarding the production | generation process of the composite display screen in the implementation example 3 of a file processing apparatus same as the above. It is a figure which shows the mode of imaging | photography of the background image in the implementation example 3 of a file processing apparatus same as the above. It is a figure which shows the example of a composite image display of a background image and a three-dimensional shape in the implementation example 3 of a file processing apparatus same as the above. It is a figure which shows the example of the upload reception screen in the implementation example 4 of a file processing apparatus same as the above.

  Hereinafter, a file processing method, a file processing apparatus, and a storage medium according to an embodiment of the present invention will be described.

  First, the outline of the file processing method will be briefly described. In this file processing method, a data file (hereinafter referred to as a shape description file) in which the shape of a building such as a house is recorded in an arbitrary format is stored safely for a long time and the originality of the file is maintained. In the future, even when the saved file is read and used (for example, several hundred years after the save), the data can be reliably read and used.

  In addition, this file processing method creates a file that strictly defines the function of the file converter that can convert the recording format (file format) of the data file (shape description file) to be stored for a long time. Both of them are stored in a medium suitable for long-term storage.

  Details of the file that defines the function of the file converter will be described later, but this file is a text-based description of the specific processing contents of the file converter for converting the recording format of a long-term data file to another format. This is a group of commands that are described. Here, this is called a format definition file (metafile).

  The format definition file (metafile) is a converter that interprets the contents by a file processing device (to be described later) at the stage of reusing a data file that has been stored for a long time, and as a result, converts the recording format of the data file. An executable format is generated. Then, the recording format of the data file stored for a long time is converted into a new format by this converter execution format.

  Further details will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a file processing method. As shown in FIG. 1, this file processing method is mainly performed in two steps, namely, a storage step for storing the shape description file 1 and the format definition file (metafile) 2 in the storage medium S for a long time, and a long-term storage. The file processing apparatus 10 includes both the file 1 and the file 2 and a utilization process for converting the recording format of the shape description file and reusing it.

  In the saving process, a shape description file 1 recorded in an arbitrary format (here, assumed to be A format), a format definition file (metafile) 2 in which a decoding method related to the A format of the shape description file 1 is defined, Is stored in the storage medium S. The storage medium S is preferably made of a material that is excellent in physical durability and can withstand storage for a period longer than the lifetime of a building or the like to be recorded.

  In the use process, the shape description file 1 and the format definition file 2 that have been stored in the storage medium S for a long time are read out and loaded into the file processing apparatus 10. In the file processing apparatus 10, first, the execution format generation unit 12 interprets (compiles) the format definition file 2 to generate a converter execution format V. Next, the recording format conversion means 13 executes this converter execution format V, thereby converting the recording format of the shape description file 1 and generating a B format shape description file 1 '. The newly generated B format shape description file 1 'is used for browsing and use.

  In this way, in the usage process, the recording format of the shape description file 1 is converted by the data processing apparatus 10, so that even if the recording format (A format) at the time of saving is obsolete at the time of usage, a new recording is performed. It can be used as a file in the format (B format). This new recording format (B format) must in principle be a format that can be used in the use process.

  Note that it is not possible to guess at the stage of the saving process for saving the shape description file 1 which recording format can be specifically used in the future use process, but in the following explanation, it is currently used. By exemplifying that conversion processing is possible between several possible recording formats, the file processing method according to the present invention is useful for long-term storage of data files. In addition, here, for the sake of specific explanation, a case where a three-dimensional data file in which a building such as a house is described in a three-dimensional shape is stored for a long time as the shape description file 1 will be described as an example.

<Storage process>
In the storage process, first, a three-dimensional data file to be stored for a long period is determined. Here, as a method of describing a three-dimensional shape, (1) expressed as a collection of points constituting a target feature, such as a description of terrain in a so-called DEM format (Digital Elevation Model). (2) A method of expressing as a set of lines (two-dimensional polygons) describing a cross section of a target feature such as a contour line, (3) A target as used in many computer graphics There is a method of expressing as an aggregate of surfaces (three-dimensional polygons) constituting the surface of the feature. In addition, there are (4) an expression method using a photograph or a movie taken from a sufficient number of viewpoints, and in the file processing method according to the present invention, any of the above methods (1) to (4) It is also possible to handle 3D data files described in.

  Currently, there are several hundred types of three-dimensional data file recording formats, and the dxf format is known as the main format. The dxf format is one of the external file formats created by AutoCAD (registered trademark), which is a general-purpose drawing creation software developed by Autodesk, Inc. in the United States. Since it is open to the public, it is now used as the de facto standard for data exchange between various CADs. The three-dimensional data file to be stored for a long period of time only needs to be recorded in such a dxf format, for example.

  Next, a format definition file (metafile) that is stored for a long time together with the three-dimensional data file is created.

  A format definition file (metafile) is a text-based description of the specific processing content for converting the recording format of a 3D data file to be stored for a long time into another format. Has a character as a commentary on the recording format of the file. In addition, this format definition file (metafile) has a grammar system similar to C language with a semicolon as a separator, and includes basic commands, conditional branches, control structures, variables, functions, etc. that constitute file input / output. Can be used to define the input and output of 3D data files.

  FIG. 2 shows a part of an example of creating a format definition file (metafile). An example of the format definition file (metafile) shown in FIG. 2 defines the recording format of a three-dimensional data file in the LSS-G format.

  Specifically, as shown in the list of FIG. 2, for each element such as a surface and coordinates constituting a three-dimensional shape of a building such as a house described by a three-dimensional data file, (a) surface (B) Selection of the color defined on the surface, (c) Specification of the surface constituting the solid, (d) Definition of normal data, (e) Definition of color data , (F) Solid definition, (g) Coordinate data definition, (h) Vertex definition, (i) Plane definition, (j) Parent-child relationship definition between multiple solids, etc. in text format It is described in. In other words, this format definition file (metafile) acquires the shape components such as surfaces and normals that constitute the three-dimensional shape of a building such as a house described by the three-dimensional data file. Describes the process of redefining with a new recording format. In addition to the above, the shape components include coordinates, colors, vertices, lines, solids, images defined on lines, surfaces, and solids, and their meaningful collections. Also good.

Note that FACE_NORMAL, FACE_COLOR, and the like described in the list of FIG. 2 are built-in functions that are executed in response to predetermined arguments, and can be appropriately called and executed by the file processing apparatus 10 in a use process described later. The format definition file (metafile) in this example defines the recording format of the three-dimensional data file in the LSS-G format, but when it is desired to convert other recording formats, the recording format is used. Prepare a format definition file (metafile) that defines and save it with the 3D data file.
In addition, when a 3D data file created in the past and succeeded in later-generation decoding of an unknown format without a format definition file (metafile) attached, the decoding method is changed to a new format definition file (metafile). ) And can be attached to the 3D data file.

<Save to storage media>
Next, the 3D data file to be stored for a long time and the format definition file (metafile) describing the conversion of the recording format of the 3D data file are stored in a storage medium suitable for long-term storage.

  As a medium suitable for long-term storage, various optical disk media such as CD-ROM and DVD-ROM which are currently popular, and magnetic tape having a longer media life can be used. As an example, the application of a glass storage medium for digital data storage, which has been rapidly researched and developed in recent years, will be described.

  This glass storage medium records data inside by finely processing glass suitable for digital data storage. For example, a multi-layered recording layer can be formed inside by using a laser, thereby producing a high density. Quartz glass that enables long-term storage of digital data over several hundred million years can be used as a storage medium. Specifically, digital data recorded in each of the above-described three-dimensional data file and format definition file (metafile) is recorded in the quartz glass using a laser. At that time, minute regions (dots) having different refractive indexes are formed inside the glass, and data is recorded with a portion where the dot is generated as “1” and a portion where the dot is not generated as “0”.

  When saving to this storage medium, the data recorded in each of the three-dimensional data file and the format definition file (metafile) is continuously recorded on the same storage medium via a delimiter. Alternatively, the respective information may be recorded on separate storage media, and the respective media may be stored in the same place. At least when a future 3D data file is to be read, the format definition file (metafile) corresponding to this 3D data file may be read at the same time.

  The storage location of the storage medium is not particularly specified. For example, the storage medium storing the three-dimensional data file and the format definition file (metafile) is processed into an appropriate shape as described above. It can be stored as a so-called electronic building tag that is attached to a purlin of a building such as a house described by a three-dimensional data file.

  Generally, building tags such as temples and shrines and private houses are attached to high places inside buildings. The three-dimensional data file created at the time when the building is built is stored for each house as an electronic building tag together with a format definition file (metafile). An example of the creation of this electronic building tag is shown in FIG.

  The electronic building tag M shown in FIG. 3 is composed of a so-called ironed iron plate in which a glassy glaze is baked on the surface of an iron flat plate having a pentagonal shape with the upper portion sharpened as shown in the figure. Digital data recording areas N and N are formed. A laser processing machine is used to store data in the digital data recording areas N and N, and a three-dimensional data file and a format definition file (metafile) to be stored are stored with redundancy. In addition, in the central part between the digital data recording areas N, N, various matters relating to storage, such as the storage date of the three-dimensional data file, the address of the storage destination house, the storage owner, etc. may be described. it can.

  In this way, if a 3D data file and a format definition file (metafile) are stored for a long time for each house in the form attached to the building as an electronic building tag, it can be used for future maintenance, trading, When this 3D data file is required, such as when making a lease contract, it can be converted to a new recording format as appropriate and reused. In addition, even if this building collapses or disappears for some reason in the future, if this electronic building tag remains, the shape of the building can be changed from the 3D data file stored inside. It can also be reproduced.

  In addition, a sound source storage medium capable of storing audio information (sound source) can also be used as the storage medium. In this case, the three-dimensional data file to be stored for a long time and the digital data recorded in the format definition file (metafile) that defines the conversion of the recording format are transferred to a modem device (not shown). It is converted into audio information (sound source) and stored in a storage medium for storing the sound source. For long-term storage of audio information, for example, in the field of digital heritage, such as historical recording, research is being promoted. It can also be applied in the field.

<Use process>
Next, the use process will be described. In the use process, first, the three-dimensional data file and the format definition file (metafile) stored in the long-term storage medium such as the electronic building tag in the above-described storage process are read using the reading means, and both these files are read out by the file processing apparatus. To import. A configuration example of this file processing apparatus is shown in FIG.

  In FIG. 4, reference numeral 10 denotes a file processing apparatus. The file processing apparatus 10 includes a RAM that stores a three-dimensional data file and a format definition file (metafile) read from the storage medium S via the reading means R, and the like. Storage means 11 and an execution format generation for interpreting (compiling) the format definition file (metafile) stored in the storage means 11 and generating a converter execution format for converting the recording format of the three-dimensional data file Means 12, recording format conversion means 13 for executing the generated converter execution format to convert the recording format of the three-dimensional data file, and the tertiary of the building described in the three-dimensional data file after the recording format conversion Display means 14 such as a display for displaying the original shape, input means 15 for inputting and instructing various data to the apparatus, LAN It includes a communication interface 16 used for connection to the network NW such as the Internet, a.

  The storage means 11 stores in advance a compiler C for interpreting (compiling) the format definition file (metafile), and the execution format generating means 12 is standardized by the file processing apparatus 10 as a substance. The CPU (Central Processing Unit) provided in FIG. 4 is realized by reading out and executing the compiler C.

  Similarly, the recording format conversion unit 13 is realized by the CPU executing the converter execution format generated by the execution format generation unit 12. Here, the execution format generation means 12 and the recording format conversion means 13 constitute a conversion processing system T. Hereinafter, the process of the file processing apparatus 10 in the utilization process will be described in detail based on the flowchart shown in FIG.

<1. Reading long-term storage data>
First, the three-dimensional data file and the format definition file (metafile) stored in the storage medium S are read using the reading unit R. Then, both these files are stored in the storage means 11 of the file processing apparatus 10 (step 01).

  The reading means R can appropriately select a device or the like that can read data from the medium S according to the type of the storage medium S used for long-term storage. For example, when the above-described electronic building tag is used as a storage medium, an optical reading device capable of reading stored data from the electronic building tag can be used. When a medium for storing a sound source or the like for a long period of time is used as the storage medium S, a playback device for the medium can be used as the reading unit R.

  Here, the reading means R is configured separately from the file processing apparatus 10, but when an optical disk medium is used as the storage medium S, for example, it is built in the file processing apparatus 10 as a disk drive device. It is good also as an aspect.

<2. Generation of converter execution format>
Next, the execution format generation unit 12 of the file processing apparatus 10 interprets (compiles) the format definition file (metafile) read from the storage medium S and stored in the storage unit 11 to generate a converter execution format. (Step 02).

  Specifically, the execution format generation unit 12 reads a format definition file (metafile) from the storage unit 11, performs syntax interpretation and lexical interpretation of codes constituting the file, and records the contents of the format definition file 13. Translates into executable machine language. As a result, the execution format generation unit 12 generates a converter execution format that can be executed by the recording format conversion unit 13 as an execution format for converting the recording format of the three-dimensional data file.

<3. Conversion of 3D data file recording format>
Next, the recording format conversion unit 13 executes the converter execution format generated by the execution format generation unit 12 to convert the recording format of the three-dimensional data file (step 03).
This recording format conversion forms the 3D shape of the structure described in the 3D data file according to the process defined in the format definition file (metafile) that is the basis for generating the converter execution format. This is performed by acquiring each shape component such as a surface, a vertex, and coordinates, and redefining each acquired element in a new recording format. The three-dimensional data file after the recording format conversion is stored in the storage unit 11.

<4. Viewing and using 3D data files>
The three-dimensional data file subjected to the recording format conversion in this way is read from the storage means 11 and used for browsing and use as necessary (step 04).
As a specific example of browsing and using, for example, the three-dimensional shape of a structure described in a three-dimensional data file converted into a new recording format is displayed on the display means 14 such as a display or printed out on a paper medium. Thus, it can be used for various purposes. Further, the editing / installing software installed in the file processing apparatus 10 may be used to process and edit the three-dimensional data file. In recent years, three-dimensional processing machines are also becoming popular.

  As described above, according to the file processing method and the file processing apparatus according to the present invention, the recording process of the three-dimensional data file is simply performed without performing any processing on the three-dimensional data file to be stored for a long time in the storage process. It is only necessary to save together a format definition file (metafile) that describes the process for converting.

  Also, the converter execution format for eliminating the obsolescence of the recording format can be obtained by interpreting the format definition file (metafile) at the time of using the 3D data file. The recording format can be reliably converted at the time of use of the three-dimensional data file. Therefore, it is possible to reliably reuse the three-dimensional data file while maintaining the originality of the three-dimensional data file at the time of storage and without being affected by the obsolete recording format at a future time.

  Next, as specific implementation examples of the file processing apparatus 10 having the configuration shown in the above example as a basic configuration, implementation examples according to four types of modes that can be implemented at the present time will be shown, and each specific processing content will be described. explain. In the following implementation example, for the sake of simplicity, the description of the process of reading the three-dimensional data file and the format definition file (metafile) stored in the storage medium S for a long time will be omitted. Are stored in the storage unit 11 of the file processing apparatus 10 in advance.

<Mounting example 1>
In the first implementation example, the file processing apparatus 10 is configured by a general personal computer (PC), and designation of a three-dimensional data file or the like for performing recording format conversion is performed via a command prompt screen displayed on the display unit. It is realized as a console application that enables The file processing apparatus 10 in this example also includes each unit shown in FIG. 4 including the above-described conversion processing system T as a main configuration.

  The procedure for converting the recording format of the 3D data file is basically the same as the procedure described above, but here the 3D data file for converting the recording format, the format definition file (metafile), and the post-conversion The output destination of the three-dimensional data file can be designated by command line input by the input means 15, and the file to be converted in the recording format can be easily designated.

  FIG. 6 shows a specific command line input example. Here, in order from the left side of the command line, (1) the conversion processing system name “vc-1c”, (2) the format definition file (metafile) name “vrml2lss.cmm”, and (3) the 3D data file The name “house1.wrl” and (4) the output data file name “house1.geo” after conversion of the recording format are respectively designated. “Vrml2lss.cmm” is a format definition file (metafile) in which processing for converting the recording format of the three-dimensional data file into the LSS-G format is defined.

  At this time, in the file processing apparatus 10, the execution format generation unit 12 first interprets (compiles) the format definition file (metafile) “vrml2lss.cmm” to generate the converter execution format V. Next, the recording format conversion means 13 executes this converter execution format V to convert the recording format of the three-dimensional data file “house1.wrl” to the LSS-G format, and the converted three-dimensional data file “house1” output as .geo ".

  If any error occurs in the process of converting the recording format, an error log that records the specific contents of the error may be output in order to easily identify the cause of the error. Further, as described above, it is also possible to confirm whether or not the recording format conversion is normally performed without outputting the data file after the recording format conversion.

  In this case, only the three-dimensional data file and the format definition file (metafile) are specified as the command line, and whether or not the recording format conversion has been normally completed is displayed on the screen. At this time, if the conversion fails, the contents may be displayed on the screen and an error log may be output separately. Such a function for confirming whether or not the recording format can be converted can be used as a means for verifying the integrity of the format definition file (metafile) before long-term storage.

<Mounting example 2>
In the mounting example 2, the file processing apparatus 10 is configured by a personal computer (PC) as in the mounting example 1, and the three-dimensional shape of the building described in the three-dimensional data file after the recording format conversion is displayed on the display means 14. This is realized as a virtual reality display device capable of stereoscopic display.

  Similarly to the first implementation example, the file processing apparatus 10 in this example includes the respective units shown in FIG. 4 including the conversion processing system T, and the conversion procedure of the recording format by the conversion processing system T is the same as that of the first implementation example. Although the same, it is different from the implementation example 1 in that the output method of the three-dimensional data file after the recording format conversion is display display.

  In this implementation example, the designation of the three-dimensional data file and the format definition file (metafile) for converting the recording format is performed from the dialog screen displayed on the display means 14. An example of this dialog screen is shown in FIG.

  In this example, the format definition file (metafile) “skv_i.cmm” is specified in the format definition file column, and the three-dimensional data file “Z (C6_4) .geo” is specified in the shape description file column. In this way, when the conversion execution button at the lower left of the dialog screen is pressed after both files are specified, the recording format is converted by the conversion processing system T. Then, the three-dimensional shape of the building described in the three-dimensional data file generated as a result of the conversion is three-dimensionally displayed on the display unit 14 as shown in FIG.

  Thus, according to the file processing apparatus 10 of the implementation example 2, the three-dimensional shape of the building described in the three-dimensional data file after the recording format conversion can be confirmed by the screen display via the display unit 14. The conversion result can be easily confirmed. In addition, if a background image stored in advance in the file processing apparatus 10 is displayed together with the three-dimensional shape at the time of this screen display, for example, a building on a record that has already been lost and does not exist can be found. Or a planned building that was not realized can be displayed at the considered location. In addition, when considering the relocation of a building, etc., it is also possible to perform a landscape simulation at the planned relocation site, or display a building such as a hazardous area that is difficult to see and visit in the remote area.

<Mounting example 3>
In the third implementation example, the file processing apparatus 10 is configured by a tablet-type portable terminal, and the three-dimensional data after conversion of the recording format is added to the background image of the field photographed by the imaging means (CCD camera) provided in the portable terminal. The three-dimensional shape of the building described in the file is synthesized and displayed on the display means 14.

  The file processing apparatus 10 in this example includes, in addition to each means including the conversion processing system T shown in FIG. 4, an image pickup means that can capture a background image of the site, and a position information detection means that detects position information of the apparatus 10. , Posture information detecting means for detecting posture information (camera angle) of the apparatus 10 is provided.

  Although not shown, each of these means is constituted by a CCD camera, for example, the position information detecting means is a GPS sensor, and the posture information detecting means is constituted by a geomagnetic sensor and an acceleration sensor. Further, in this implementation example, a display provided on the front surface of the apparatus as the display unit 14 and a touch panel that can be operated by touching operation buttons displayed on the display are provided as the input unit 15.

  According to the file processing apparatus 10 in this example, for example, a building described in a three-dimensional data file that has been stored for a long period of time for several decades has already been demolished after several decades, and disappears from the place where it was originally built. Even if it is, the building described in the three-dimensional data file converted to the new recording format is superimposed on the image of the place where the building was built several decades later, and it is as if the building is in that place. Can be reproduced as if it were built.

  The processing of the file processing apparatus 10 in this case will be described based on the processing flow shown in FIG. In step 11, the user of the file processing apparatus 10 in this example first goes to the place where the building to be reproduced was originally built, and the three-dimensional data file and format definition of the building stored in advance in the storage means. A file (metafile) is selected via the touch panel (see FIG. 10).

  When this selection is made, the conversion processing system T of the file processing apparatus 10 converts the recording format of the 3D data file in the same procedure as described above, and stores the converted 3D data file in the storage unit 11. (Step 12). The recording format converted 3D data file stored here is attached with location information (latitude, longitude, altitude, etc.) of the place where the building was built.

  Next, the file processing apparatus 10 starts the image pickup means (CCD camera), the position information detection means (GPS sensor), and the posture information detection means (geomagnetic sensor, acceleration sensor) one after another (steps 13 and 14). A background image that is visible from the position of the file processing apparatus 10 is acquired and displayed on the display. At this time, based on the position information regarding the background image acquired by the imaging unit, the position information of the three-dimensional data file of the building obtained in step 12, and the attitude information of the file processing apparatus 10, the position of the background image is set to an appropriate position. The building is synthesized and displayed (step 15).

  A display example in this case is shown in FIG. Here, the three-dimensional shape U described in the three-dimensional data file after the recording format conversion is synthesized and displayed at an appropriate location of the background image W acquired by the imaging means.

  After that, when the position or orientation of the file processing apparatus 10 is changed by the user's operation (Yes in step 16), the position information acquired by the position information detection unit and the posture information detection unit, the measurement value of the posture information In response to the change, a building redrawing command is sequentially issued (step 17), and the building is redrawn appropriately in the correct posture at the appropriate position of the latest background image using the position information and the posture information. The As a result, real-time composite display that can immediately respond to changes in the position and orientation of the file processing apparatus 10 is possible. On the other hand, if there is no change in the position or orientation of the file processing apparatus 10 (No in step 16), the composite display screen is stored in the storage means 11 as necessary (step 18), and the process is terminated.

  Thus, according to the file processing apparatus 10 of the implementation example 3, it is possible to appropriately reproduce and display a building that has been built in a place that is currently a ruin or a vacant lot. Such a function can also be used for landscape examination, for example, and can predict and display a landscape when a building in a planning stage is constructed on a planned construction site.

<Mounting example 4>
In the implementation example 4, the file processing apparatus 10 is configured as a WEB server connected to a network NW such as the Internet or a LAN, and three-dimensional data is exchanged with an SQL server connected to be communicable via the network NW. It has a function to input and output files.

  The file processing apparatus 10 in this example is connected to a network NW such as the Internet via the communication interface 16 shown in FIG. 4, and can communicate with an SQL server (not shown) via this network NW. ing.

  In this SQL server, a database for storing various types of information related to a three-dimensional data file whose recording format has been converted is developed, and is included in the three-dimensional data file converted into a new recording format by the file processing apparatus 10. Data can be registered (uploaded) in this database.

  In the file processing apparatus 10 in this example, the designation of the three-dimensional data file and the format definition file (metafile) to be registered in the SQL server is performed via the upload reception screen displayed on the display unit 14. As shown in the display example of the reception screen in FIG. 12, the user first refers to the reference position of the target 3D data file to be registered in the SQL server among the 3D data files stored in the storage unit 11. Is specified in the “shape description file” field L2. At this time, the reference position of the format definition file (metafile) for converting the recording format of the three-dimensional data file is also specified in the “format definition file” field L1. When these designations are completed, the upload request button B1 is pressed.

  Upon receiving this upload request, the conversion processing system T of the file processing apparatus 10 converts the recording format of the 3D data file in the same procedure as described above, and temporarily stores the converted 3D data file in the storage unit 11. To do.

  Next, the file processing apparatus 10 issues a command for registering the three-dimensional data file after the recording format conversion to the SQL server that is communicably connected via the network NW, and is constructed on the SQL server. The converted 3D data file is registered (uploaded) in the database.

  Although the database table structure in the SQL server is arbitrary, for example, information on the shape components such as the coordinate values of each vertex, the topology of the surface, the shape of the solid, etc. constituting the 3D shape described by the uploaded 3D data Can be managed. In addition, by appropriately changing the format definition file (metafile) specified when registering the 3D data file, even the same 3D data file is converted into various recording formats and registered in the SQL server. be able to.

  On the other hand, the three-dimensional data file registered in the SQL server in this manner is appropriately extracted in response to an extraction (download) request from the file processing apparatus 10. The extracted three-dimensional data file is further converted into a new recording format by the file processing apparatus 10 and then provided to the user.

  In this case, similarly to the registration, the three-dimensional data file to be extracted from the download acceptance screen displayed on the display means 14 and the format definition file (metafile) for converting the recording format of the three-dimensional data file. And press the download request button. When this download request is accepted, the file processing apparatus 10 issues a command for searching and reading the designated three-dimensional data file to the SQL server, and takes out the three-dimensional data file from the SQL server via the network NW. (download).

  Thereafter, the file processing apparatus 10 converts the recording format of the extracted three-dimensional data file by the conversion processing system T based on a separately specified format definition file (metafile), and outputs this to a file or the like. The three-dimensional data file extracted from the SQL server may be a file that has been registered in the SQL server for a long time, or may be a file that has been converted into another format and registered in the SQL server immediately before extraction. .

  As described above, according to the file processing apparatus 10 of the implementation example 4, a three-dimensional data file and a format definition file (metafile) having different recording formats are stored in a database developed in an SQL server connected via the network NW. ) Can be mixed and centralized management of 3D data files can be easily performed.

The specific implementation example of the file processing apparatus 10 of the present invention has been described above. In any implementation example, a set of a three-dimensional data file and a format definition file (metafile) created in the past and stored for a long time is used. Thus, while maintaining its originality, it can be reused in common in different processing systems without being affected by the obsolescence of the recording format. Moreover, although the said implementation examples 1-4 were illustrated as a specific implementation example of the file processing apparatus 10, as an implementation example, it is not limited to these, It uses to the utilization aspect of the three-dimensional data file after recording format conversion Various implementations are possible depending on the situation.
Furthermore, in the saving process, any of the above-described mounting examples 1 to 4 that are available at that time is tested, and if a defect is detected, necessary corrections are made to the format definition file (metafile). Thus, it is possible to inspect in advance that the format definition file (metafile) can be correctly converted in the future with respect to the contents recorded in the three-dimensional data file.

  The compiler C stored in advance in the storage unit 11 of the file processing apparatus 10 is independent of the file processing apparatus 10 and includes a storage medium S such as an electronic building tag along with a three-dimensional data file and a format definition file (metafile). You may save it in In this case, the compiler C can be read from the storage medium S together with the three-dimensional data file or the like and used.

  Further, the name, version, definition document, source code, execution format, etc. of the compiler C can be stored for a long period of time, for example, in addition to the storage medium S in which these files are stored for a long period of time. It may be stored in a highly secure facility such as a public library, a library, or a data center that is reserved for permanent storage. As described above, if the compiler C is stored as a common resource for a long period of time, the compiler C can be used in common in all houses to which the electronic building tag is attached in the use process.

  In addition, if the format definition file (metafile) attached to the saved 3D data file specifies how to access materials related to this version of the compiler C, the format of the 3D data file will be expanded thereafter. Even if different versions of the compiler are augmented and spread, the readability of the three-dimensional data file stored in the past is not impaired.

  Furthermore, the data file to be stored for a long period of time is not limited to the above-described three-dimensional data file, and may be a two-dimensional data file in which a building such as a house is described in a plane. In this case, if a format definition file (metafile) for converting the recording format of the two-dimensional data file to a new recording format is created separately and stored together with the two-dimensional data file for a long time, the above-described three-dimensional data Long-term storage and reuse are possible as with files.

1,1 'Shape description file 2 Format definition file (metafile)
DESCRIPTION OF SYMBOLS 10 File processing apparatus 11 Storage means 12 Execution format production | generation means 13 Recording format conversion means 14 Display means 15 Input means 16 Communication interface M Electronic building tag N Digital data storage area S Storage medium R Reading means T Conversion processing system V Converter execution format C Compiler NW network

Claims (3)

A storage step of storing a three-dimensional data file in which a three- dimensional shape of a building such as a house is recorded in an arbitrary format using a CAD system in a storage medium for long-term storage;
A file processing method comprising: using a three-dimensional data file stored in the storage medium for a long time by taking it in a file processing apparatus;
In the storing step, when saving the storage medium the three-dimensional data file, the file processing device is an interpretable, and the recording format of the three-dimensional data file, in the use step of the three-dimensional data file Save the format definition file that defines the process for converting to another available recording format, along with the 3D data file, on a storage medium ,
The format definition file defines a process for acquiring a shape component constituting a three-dimensional shape of a building described by the three-dimensional data file and redefining the shape component in the other recording format. And the storage medium is a storage medium that records data by finely processing glass suitable for long-term storage of digital data,
A file processing method comprising storing the storage medium as an electronic building tag attached to a building described by the three-dimensional data file . The file processing method according to claim 1,
The use step includes a converter for the execution format generation means of the file processing device to interpret the format definition file captured by the file processing device and convert the recording format of the three-dimensional data file to the other recording format. Generating an executable, and
A file processing method comprising: a recording format conversion unit of the file processing device executing the generated converter execution format to convert the recording format of the three-dimensional data file to the other recording format . A shape description file in which the shape of a building such as a house is recorded in an arbitrary format using a CAD system is stored in a storage medium for long-term storage, and the shape description file stored in the storage medium for a long time is filed. A storage medium that is used in a file processing method having a use step that is taken in and used by a processing device,
By finely processing glass suitable for long-term storage of digital data, the shape description file and a process for converting the recording format of this shape description file into another recording format that can be used in the use process are defined. And a format definition file. The storage medium is configured as an electronic building tag that can be stored together with a building described in the shape description file.

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