JP2008152429A - Image processor, image processing method, program and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation to extract a specific part by designating one point on a two-dimensional image displayed with a three-dimensional model of an industrial product or the like, and to produce data for allowing sufficient endurance to practical use even on a computer having low processing performance. <P>SOLUTION: The image processor for a three-dimensional model prepared in advance has: a model data management means storing and managing three-dimensional model information at least including part shape information expressing a part shape of each part constituting equipment and installation shape information expressing an installation state of each the part; and a part screen area calculation processing means receiving a view line direction from an input device, also receiving part management information, single body shape information, and the installation shape information from the model data management means, and producing part screen area management information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image processing apparatus, an image processing method, a program, and a storage medium that create information to be provided when a part is selected in a parts catalog or the like composed of a three-dimensional model.

  In recent years, the use of three-dimensional models created using CAD (Computer Aided Design) or CG (Computer Graphics) has been rapidly expanding due to the improvement of computer performance and the progress of graphic processing technology. Even in the manufacturing industry that manufactures industrial products, it has become possible to create images that display their product models and use contents including images such as parts catalogs and service manuals as electronic media. Many industrial products, such as mechanical products and electrical products, are composed of multiple parts. When using product model images, it is often necessary to identify the parts that make up a product on the images. To occur.

  In such a case, conventionally, a device for displaying a three-dimensional model of a product designates a position or a region in a three-dimensional space, and performs a process of extracting a specific part from a geometric relationship with each part. It was.

  For example, in Patent Document 1, in a CAD system that reads information of a three-dimensional product model, a method for extracting a part of a product model located in the designated closed space by designating a three-dimensional closed space Presents.

Further, Patent Document 2 presents a method for extracting a part that meets a predetermined geometric search criterion for a three-dimensional model.
JP-A-9-190456 JP 2006-39872 A

  However, in either of the conventional techniques, the target when extracting the parts is limited to a three-dimensional shape, and the parts are not extracted on a general two-dimensional image. In addition, every time a part extraction operation is performed, the geometrical relationship is calculated. If the number of parts is very large, a computer with low processing performance could not withstand practical use.

  The present invention has been made in view of such circumstances, and realizes an operation of extracting a specific part by designating one point on a two-dimensional image displaying a three-dimensional model of an industrial product or the like, and processing. An object of the present invention is to provide an image processing apparatus, an image processing method, a program, and a storage medium for creating data that can withstand practical use even on a low-performance computer.

  The present invention stores and manages three-dimensional model information including at least part shape information representing the part shape of each part constituting the device and assembly shape information representing an assembled state of each part for a prepared three-dimensional model. A model data management unit that receives the line-of-sight direction from the input device, and also receives assembly shape information, single-piece shape information, and part management information from the model data management unit, and generates part screen region management information Means are provided.

  The component screen area calculation means divides the two-dimensional image displaying the assembled shape of the three-dimensional model into a plurality of areas in a grid pattern, and geometrically determines in which area each part is located. The part screen area information for extracting the part located in the specific area is calculated.

  The component screen region calculation means assigns a screen region ID to each region obtained by dividing the two-dimensional image displaying the assembled shape of the three-dimensional model into a plurality of regions, and uses the screen region ID as a reference. The part screen area information is created in the form of a list that lists the IDs of the corresponding parts.

  The component screen region calculation means designates one point on the two-dimensional image displaying the assembled shape of the three-dimensional model, and displays component screen region information for extracting a part corresponding to the corresponding screen region ID. It is something to be created.

  In addition, the component screen region calculation means corresponds to each partial region of the image when extracting a specific part by designating one point on the two-dimensional image displaying the assembled shape of the three-dimensional model. Parts screen area information for extracting corresponding parts from a list in which parts are listed in advance is created.

  Also, a program that is installed and executed on a computer, and for a prepared three-dimensional model, part shape information that represents the part shape of each part that constitutes the device, and an assembled shape that represents the assembled state of each part Storing and managing three-dimensional model information including at least information; receiving a line-of-sight direction from the input device; receiving assembly shape information, unit shape information, and parts management information from the model data management means; And a step of creating.

  A computer-readable storage medium storing the program according to claim 6.

  Therefore, according to the present invention, when browsing the catalog data, by specifying an arbitrary point on the screen, it becomes possible to narrow down the parts near the specified point from among the entire parts, and Thus, an effect is obtained that it is possible to sufficiently withstand practical use even on a computer with low processing performance.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows an example of a data processing apparatus for configuring a parts catalog automatic generation system according to an embodiment of the present invention.

  In the figure, this data processing apparatus includes a CPU (central processing unit) 1 for executing various data processing, a memory 2 that constitutes a work area of the CPU 1, stores various program data, etc., and a user. It comprises an input / output device 3 for inputting / outputting data to / from this data processing device by operation and an external input / output device 4 for inputting / outputting data to / from an external device.

  The CPU 1, the memory 2, the input / output device 3, and the external input / output device 4 are connected via a bus 5, and various data are exchanged via the bus 5.

  FIG. 2 shows an example of a functional block of a parts catalog creation function for creating a parts catalog using 3D_CAD data.

  In the figure, a catalog creation unit 20 creates part catalog data based on data stored in a 3D data storage unit 21 and a parts list storage unit 22 formed in a storage device (not shown). save.

  Here, the 3D data storage unit 21 is a database holding 3D_CAD data used for creating a catalog. Further, the 3D_CAD data holds shape information in units of individual parts constituting the product, and is stored in a state where these parts are assembled.

  The parts list storage unit 22 is a database describing a list of parts (replaceable parts) to be included in the catalog. In the parts list, part names, part ordering numbers, and the like are held in a unit unit of the product.

  The catalog creation unit 20 stores the 3D_CAD data stored in the 3D data storage unit 21 among the parts registered in the parts list stored in the parts list storage unit 22 in the 3D data storage unit 21. With reference to the contents, the image data (2D data) stored in the image data storage unit 24 is compensated and input by the image compensation unit 25 if the 3D_CAD data is not stored in the 3D data storage unit 21. In addition, for the image data input by the image compensation unit 25, the position information input from the position information compensation unit 26 is used as the position information used when displaying the part.

  Here, the image data storage unit 24 holds, in advance, an image photographed with a digital still camera or an image created by an illustration for a part that is described in the parts list but does not exist as 3D_CAD data. It is a database.

  In addition, the image filling unit 25 designates an image (file) in the image data corresponding to a part that is described in the parts list but does not have 3D_CAD data, and gives it to the catalog creating unit 20.

  Further, the position information compensation unit 26 designates the position of the assembly state by operating the screen instruction device 14 or the keyboard device 13 by the user with respect to a part which is described in the parts list but does not have 3D data. The position information is given to the catalog creation unit 20.

  The catalog storage unit 23 includes a list of parts in the catalog (name and order number), an image displaying a single part, an image indicating the assembly position of the part (from a plurality of viewpoints), and assembly position information of the part. Catalog data composed of (from a plurality of viewpoints) is stored for each part.

  Also, the image showing the assembly position of the part highlights the part so that the assembly position of the target part can be seen in the image of the unit indicating the product or part of the product (when created from 3D data) Alternatively, a rectangular area indicating the assembly position of a part or a rectangular solid surrounding the part is highlighted.

  The catalog browsing unit 27 displays the contents of catalog data stored in the catalog storage unit 23 created by the catalog creation unit 20. In addition to searching by part name, it is possible to search for a part by specifying an area on the part assembly state diagram.

  FIG. 3 shows an example of the configuration of the catalog creation unit 10.

  In the figure, the model data management unit 21 includes part shape information representing the part shape of each part that constitutes the device with respect to a three-dimensional model prepared in advance by the 3D data storage unit 11 and the parts list storage unit 12. 3D model information including at least the entire shape information representing the assembled state of each part is stored and managed, the entire shape information SF and the part shape information SP are catalog data creation processing unit 22, and the component screen area calculation The data is passed to the processing unit 23.

  The catalog data creation processing unit 22 receives the entire image IZ and the entire shape information SF and each part shape information SP received from the model data management unit and the line-of-sight direction PE and the zoom parameter PZ received from the input / output device 3. An entire image IH with highlight, a single image IT, and boundary information IK corresponding to each part are created and passed to the catalog storage unit 13.

  Here, the line-of-sight direction is given by polar coordinates α and β in a three-dimensional space. At this time, the relationship between the XYZ orthogonal coordinate system of the three-dimensional model and α and β is shown in FIG. The zoom parameter is given as a numerical value from 0.0 to 1.0, and the larger the numerical value, the larger the zoom image.

  The whole image is the whole image of the three-dimensional model displayed with the designated zoom parameter, and the whole image with highlight is focused on the whole image of the three-dimensional model displayed with the designated zoom parameter. The part shape is highlighted (displayed with a specific display attribute), the single image is only the part shape of interest, and the boundary information is displayed with the specified zoom parameters. This is information on a line that is a boundary between an area occupied by the focused part and an area that is not in the entire image of the three-dimensional model.

  In addition, the component screen boundary calculation processing unit 23 executes the following three steps for each line-of-sight information PE received from the input device 3 to create the component screen region information PM and passes it to the catalog storage unit 13.

  First, the screen of the two-dimensional image when the assembly shape is displayed in the line-of-sight direction is divided into several rectangular areas in a grid pattern, and an ID (screen area ID) is assigned to each of the divided areas. At this time, the number of vertical areas and the number of horizontal areas are determined in advance in the system (step 1).

  Next, for each part constituting the three-dimensional model, it is geometrically calculated in which ID region in step 1 the point on the three-dimensional space expressing the shape of the part is located. This is performed for all points representing the shape of the part. At this time, an ID (part ID) is assigned to each part, and the result is stored in the memory for each part ID in a format as shown in FIG. 4B (step 2).

  Then, the result of step 2 is rearranged on the basis of the screen area ID, and the part screen area information PE in a list form as shown in FIG. 4C is created.

  Therefore, when browsing the catalog data created by this system, for example, by specifying one point on the assembly image by the input device, calculating which screen region ID the specified point is indicated by, The component ID corresponding to the corresponding screen region ID is extracted from the component screen region information PM, and the corresponding highlight assembly image and single image can be determined as the selected part.

  As described above, when browsing the catalog data, by specifying any one point on the screen, it becomes possible to narrow down the parts near the specified point from the whole part, and the processing performance is low It becomes possible to withstand practical use even on a computer.

  FIGS. 5A to 5D show how the system screen area is calculated by applying this system. FIG. 5A is an example of a two-dimensional image screen when the assembled shape is displayed in a certain line-of-sight direction. FIG. 5B is an example in which the screen of FIG. 5A is divided into several rectangular areas in a grid pattern, and an ID (screen area ID) is assigned to each of the divided areas. FIG. 5C and FIG. 5D are examples of the result of calculating which screen region ID the point on the three-dimensional space expressing the shape of the part is located in. A region surrounded by a light blue frame is a corresponding region. An example of the component screen area management information PM corresponding to FIGS. 5A to 5D is shown in FIG.

The block diagram which showed an example of the data processor for comprising the parts catalog automatic generation system concerning one Example of this invention. The block diagram which showed an example of the functional block of the parts catalog creation function which creates the parts catalog using 3D_CAD data. FIG. 3 is a block diagram showing an example of the configuration of the catalog creation unit 10. Schematic diagram for explaining the relationship between the XYZ orthogonal coordinate system of the three-dimensional model and the polar coordinates α, β, information that summarizes the screen area ID where the part is located for each part ID, and part screen area information Schematic which showed an example of PM. Schematic which showed a mode that the screen area of components was calculated applying this system. Schematic which showed an example of the components screen area | region management information PM corresponding to Fig.5 (a)-(d).

Explanation of symbols

21 Model Data Management Unit 22 Catalog Data Creation Processing Unit 23 Parts Screen Area Calculation Processing Unit

Claims (7)

Model data management for storing and managing 3D model information including at least part shape information representing the part shape of each part constituting the device and assembly shape information representing the assembled state of each part for a 3D model prepared in advance Means,
In addition to receiving the line-of-sight direction from the input device, the apparatus further comprises component screen area calculation processing means for receiving assembly shape information, single-piece shape information, and part management information from the model data management means, and creating part screen area management information. An image processing apparatus. The component screen area calculation means divides the 2D image displaying the assembled shape of the 3D model into several areas in a grid pattern and geometrically calculates which area each part is located in. The image processing apparatus according to claim 1, wherein part image area information for extracting a part located in a specific area is created. The component screen area calculation means allocates a screen area ID to each area obtained by dividing the two-dimensional image displaying the assembled shape of the three-dimensional model into several areas in a grid pattern, and responds based on the screen area ID. The image processing apparatus according to claim 1, wherein the part screen area information is created in a list format in which IDs of parts to be listed are listed. The component screen area calculation means designates one point on the two-dimensional image displaying the assembled shape of the three-dimensional model, and creates component screen area information for extracting a part corresponding to the corresponding screen area ID. The image processing apparatus according to claim 1. When the part screen area calculation means extracts a specific part by designating one point on the two-dimensional image displaying the assembled shape of the three-dimensional model, the part corresponding to each partial area of the image is displayed. The image processing apparatus according to claim 1, wherein part image area information for extracting corresponding parts from a list listed in advance is created. A program that is installed and executed on a computer,
Storing and managing three-dimensional model information including at least part shape information representing a part shape of each part constituting the device and assembly shape information representing an assembly state of each part for a prepared three-dimensional model;
A program comprising the steps of receiving a line-of-sight direction from an input device, receiving assembly shape information, single-piece shape information, and parts management information from the model data management means, and creating part screen area management information. A storage medium readable by a computer system,
A storage medium storing the program according to claim 6.