JP2004005513A - Cg perspective drawing method using internet and system therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an environment, where even an amateur can easily generate a high-definition CG (computer graphics) perspective drawing by way of the Internet. <P>SOLUTION: Light distribution characteristics of a plurality of luminaires, which are selectable with an operation from an Internet terminal, are stored in a server over the Internet. The CG perspective drawing is created, by using lighting calculation software on the basis of the floor plan information of housing, which is input by operation from the terminal, the information of the position attaching the luminaire selected in conformity with the floor plan and the information from the viewpoint of observing the floor plan. The drawing is transmitted to the terminal by using electronic mail etc. Also, the image quality type of the CG perspective drawing, visual field angle, observation time or the like are made selectable from the terminal. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for creating a CG perspective diagram using the Internet and a system therefor.
[0002]
[Prior art]
[Patent Document 1]
JP 2001-306893 A
Patent Literature 1 discloses a system that supports a user's product selection using CG images using the Internet.
[0003]
Conventionally, a CG perspective diagram of a house has been created by a CG expert using dedicated CAD software and lighting calculation software based on the design drawing of the house. The created CG perspective diagram is used for the presentation from the contractor to the owner, but it takes several days to one week from completion by the contractor to the professional contractor to completion, and at a considerable cost. Often needed. In addition, since a specialized CG creation company lacks knowledge of the owner's preferences and the situation at the site, the created CG perspective view may not be usable because of a sense of incongruity.
[0004]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides an environment in which a CG expert can easily create a high-definition CG perspective diagram via the Internet, which was previously possible only with dedicated software. The task is to provide.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a light distribution characteristic of a plurality of lighting fixtures selectable by an operation from an Internet terminal is provided on a server on the Internet. , A second storage unit for holding house layout information input by operation from the terminal, and lighting selected according to the house layout by operation from the terminal. A third storage unit that holds information on an installation position of the appliance, a fourth storage unit that holds information on a viewpoint for observing the floor plan specified by an operation from the terminal, and first to fourth storages CG perspective drawing for creating a CG perspective diagram when observing the floor plan from the viewpoint based on the information stored in the unit based on the calculation result of the lighting effect by the lighting fixture A processing section, and is characterized in that it has a fifth storage unit that holds the CG perspective drawings created as electronic data which can be transmitted to the terminal.
[0006]
The invention according to claim 2 is a method for creating a CG perspective diagram using a server on the Internet, the server comprising: a database storing light distribution characteristics of a plurality of lighting devices; At least software for calculating the effect and software for converting the floor plan information input as the plan view into a three-dimensional image are provided, and the server is used to input the plan view by an operation from the Internet terminal. Holding the floor plan information, converting the floor plan information into a three-dimensional image and displaying it on the screen of the terminal, and information on the mounting position of the lighting fixture selected in accordance with the floor plan by an operation from the terminal And storing information on a viewpoint for observing the three-dimensional image specified by an operation from the terminal. Creating a CG perspective diagram when observing the floor plan from the designated viewpoint using information on the light distribution characteristics and the mounting position of the lighting fixture based on the calculation result of the lighting effect by the lighting fixture; And transmitting the created CG perspective diagram to the terminal.
[0007]
The invention of claim 3 is characterized in that, in claim 2, the image quality type of the CG perspective diagram to be created can be designated by an operation from the terminal.
A fourth aspect of the present invention is characterized in that, in the second or third aspect, a viewing angle at the time of creating a CG perspective view can be specified by an operation from the terminal.
According to a fifth aspect of the present invention, in any one of the second to fourth aspects, the method further comprises a step of storing the created CG perspective diagram in a server.
According to a sixth aspect of the present invention, in any one of the second to fifth aspects, there is provided a step of retaining information relating to a direction and an observation time of a floor plan designated by an operation from the terminal, and a step of creating the CG perspective view. Is characterized in that a CG perspective diagram is created based on a calculation result of a lighting effect by a lighting fixture and a lighting effect by external light.
According to a seventh aspect of the present invention, in any one of the second to sixth aspects, the method further comprises a step of synthesizing a digital image acquired by the terminal with the created CG perspective diagram.
[0008]
According to an eighth aspect of the present invention, in any one of the second to seventh aspects, in the illumination calculation of the CG perspective creation processing unit, an omnidirectional CG perspective view displaying an omnidirectional three-dimensional virtual space centered on the observation position. Is provided.
In a ninth aspect of the present invention, in the ninth aspect, the method further includes a step of saving the created CG perspective view and a step of publishing the CG perspective view from the terminal, and the observation direction can be operated by an operation from the terminal. It is characterized in that.
According to a tenth aspect of the present invention, there is provided any one of the second to ninth aspects, wherein the software for calculating the lighting effect is provided in one or more separate servers, and the server for creating a CG perspective diagram is selected. It is characterized by.
According to an eleventh aspect, in the tenth aspect, in the step of selecting the server, the selection is performed based on the image quality type.
According to a twelfth aspect of the present invention, in the tenth aspect, a step of performing user authentication on the server is provided, and in the step of selecting the server, a server is selected according to information of the authenticated user. I do.
According to a thirteenth aspect of the present invention, in the tenth aspect, the server is provided with means for detecting a load condition, and at the stage of selecting the server, a server is selected according to the load condition.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a configuration example of an input screen when the CG perspective diagram creation service of the present invention is used. This input screen is displayed on the screen of the user's Internet terminal, and the layout created by the user using the layout creation system provided on the server on the Internet described later is used by the user using the interior simulator also described later. When the user arranges furniture and lighting equipment and operates the CG perspective diagram creation button (32 in FIG. 15), the screen of “CG perspective diagram creation service” in FIG. 1 is displayed. This screen has a mail address input field for transmitting the created CG perspective diagram to the address specified by the user. A plurality of e-mail addresses may be designated by separating them with a semicolon or the like, and may be directly sent to the owner in addition to the person in charge of the construction company.
[0010]
For example, when the CG perspective diagram creation service is used in a state where the screen as shown in FIG. 2A is displayed on the browser of the user, the CG perspective diagram subjected to the illumination calculation processing as shown in FIG. Is sent to the specified email address within 24 hours. Here, as a mode of transmitting the CG perspective diagram from the server to the user, in addition to a mode of transmitting the CG perspective diagram as an attached file of an e-mail, the completed CG perspective diagram is stored in the server, and the user can download the CG perspective diagram later using a browser. For example, any mode may be used, such as a mode in which the URL for browsing is notified to the user by e-mail when the CG perspective diagram is stored in the server.
[0011]
On the screen of the CG perspective diagram creation service shown in FIG. 1, the image quality type and the viewing angle of the CG perspective diagram can be selected. As the image quality type, various image quality such as lighting calculation processing, watercolor style, canvas style, retro style, poster style, and blur style can be selected. FIG. 3 illustrates a difference in the CG perspective diagram due to the difference in the image quality type. The plurality of images shown in FIG. 3 are all created from the same basic image, and are converted into CG perspective diagrams having different image quality by performing different image processing (filter processing) selected as the image quality type. .
[0012]
In addition to the standard, wide-angle and telephoto viewing angles, an arbitrary viewing angle can be input as a numerical value converted into the focal length (mm) of the camera. FIG. 4 illustrates a difference in the CG perspective diagram due to the difference in the viewing angle. The plurality of images shown in FIG. 4 are all obtained by observing the same floor plan from the same place. (1) is equivalent to a wide-angle lens, (2) is equivalent to a standard lens, (3) is equivalent to a telephoto lens, (4) to (6) is a viewing angle equivalent to a zoom lens having an arbitrary focal length.
[0013]
Note that the default settings are “image quality type = lighting calculation processing” and “viewing angle = standard”. When the user inputs only the mail address on the input screen of FIG. 1 and presses the “OK” button, the standard viewing angle is displayed. The CG perspective diagram subjected to the lighting calculation processing is returned. Therefore, even if this system is used for the first time, a high-definition CG perspective diagram can be used by inputting only a mail address for the time being.
[0014]
When the button of “Detailed setting” is operated from the screen of FIG. 1, a sub-window of “Detailed setting of CG perspective view” appears, and more detailed setting is possible. For example, the sun angle can be set by the time, and it is possible to select the angle and light amount at which the external light enters the floor plan by inputting any time in the morning, afternoon, evening, or any other time. . FIG. 5 illustrates the difference in the appearance of the CG perspective diagram depending on the difference between morning, daytime, and evening. It is assumed that the orientation of the floor plan has been input in advance, and the user can input the direction of the floor plan using the operation unit 81 in the two-dimensionally displayed floor plan (see FIG. 16). Further, seasonal data may be input so that the difference in the solar altitude according to the season can be reflected on the CG perspective diagram.
[0015]
In addition, as the selection of the outside view, a clear sky, a cloudy sky, a night view, a plant, and the like can be selected. In the CG perspective diagrams of FIGS. 5A and 5B described above, a cloudy sky is visible outside the window, but this is a view in which an external scene prepared in advance in the database of the server is pasted. Similarly, it is also possible to select and paste a night view outside view in the CG perspective view of FIG. 5C.
[0016]
Next, image quality parameters such as brightness and contrast can be selected. This makes it possible to set a personal style as shown in FIGS. 6 (b) and 6 (c) with respect to the setting of “recommended” as shown in FIG. 6 (a). As for the setting of “recommended”, a set of parameters optimized for each representative image quality type as illustrated in FIG. 3 by an expert is stored in a database. Usually, it is not necessary to change the setting. For example, when the wall material, floor material, ceiling material, furniture, etc. are unified with black system or white system, changing some parameters may improve the appearance, so users who are familiar with the system may Therefore, it has a detailed setting function. In addition, although not shown in the drawing, a difference in color tone such as a warm color system and a cool color system may be selected.
[0017]
FIG. 7 shows a configuration example of the system of the present invention. The client 10 and the server 20 are connected so that information can be transmitted and received via the Internet. The server 20 includes software 21 for designing a floor plan of a house, a component database 22 storing component data used by the floor plan design software, and a room designed by the floor plan design software in three dimensions. 3D display software 23 is provided. The client 10 is constituted by a personal computer equipped with Internet browsing software (browser). First, the client 10 connects to the URL of the server 20 which is the system operating entity, and opens a home page where the floor plan design software 21 can be used. Then, as shown in FIG. 8, the screen used for the floor plan is automatically displayed on the browser, and the use can be started.
[0018]
On the floor plan design screen in FIG. 8, a plurality of grid lines (grids) are drawn vertically and horizontally at equal intervals, and the user creates a floor plan in this area. The intervals between the scales (measurements) displayed at regular intervals by black triangles are 90 cm, but this can be changed to any interval (for example, 100 cm).
[0019]
To design a layout, first, a component category is selected from the component category selection field 12 displayed on the right side of the screen. In the example shown in FIG. 8, “Western-style room” is selected as the component category, and “Western-style room 4.5 tatami”, “Western-style room 6.0 tatami”, and “Western-style room 8.0 tatami” are displayed in the component list display column 13. ,... Are displayed as components. In addition, you can also select a Japanese room, LDK, kitchen, washroom, toilet, bathroom, entrance, hallway, storage, window, door, opening, and other parts categories. For example, in the example shown in FIG. 9, “Japanese-style room” is selected as the component category, and “Japanese-style room 4.5 tatami”, “Japanese-style room 6.0 tatami”,... Are displayed as components. All of these components may be downloaded first, or may be downloaded from the component database 22 by accessing the server 20 each time the component is selected in the component category selection field 12. . In the component size display field 14, the name and size of the selected component are displayed. The size of a part is width (mm display) x depth (mm display) and area (m ² (Conversion, tsubo conversion).
[0020]
Hereinafter, a specific manner of creating a floor plan will be described with reference to FIG. In the example of FIG. 10, “Japanese-style room” is selected as the component category, and “Japanese-style room 4.5 tatami” is selected from the component list display column 13, and dragged and dropped on the floor plan 11 with the mouse. This shows a 4.5-tatami Japanese-style room adjacent to the living room that has already been arranged. If you want to change the placed “Japanese-style room 4.5 tatami” to “Japanese-style room 6.0 tatami”, click the delete button in FIG. 9 with the mouse and replace the “Japanese-style room 4.5 tatami” part placed immediately before. It is sufficient to delete the part, newly select "Japanese-style room 6.0 tatami" from the parts list display column 13, and drag and drop it on the plan view 11 with the mouse to rearrange it. Similarly, kitchens, washrooms, toilets, bathrooms, entrances, hallways, storage, windows, doors, openings, and other components can be located. When it is desired to delete all the arranged components and to re-arrange them from the beginning, the user operates the “Delete All” button in FIG. 8 or FIG. To change the orientation of the arranged components, the "rotate" button in FIG. 8 or FIG. 9 is operated.
[0021]
By operating the “deform” button in FIG. 8 or FIG. 9, as shown in FIG. 11, it is also possible to freely move the sides or vertices of the fixed part with the mouse and input the layout of the irregular shape. it can. With this method, a design with a higher degree of freedom is possible. Further, even when a new shape is generated, there is no need to design parts, and the cost for system modification can be reduced.
[0022]
In this way, for example, a floor plan as shown in FIG. 12A is created. Here, if the button of “view the three-dimensional floor plan” in FIG. 8 or FIG. 9 is clicked on with a mouse, a three-dimensional display command is sent to the server 20, and the three-dimensional display software 23 is activated. Then, the three-dimensional layout as shown in FIG. 12B is displayed on the browser screen of the client 10. At this time, as shown in FIG. 8 or 9, on the three-dimensional display screen 15, necessary skeleton information such as columns a and beams b and c is automatically added as appropriate and reflected in the three-dimensional display. You. Below the three-dimensional display screen 15, a viewpoint operation menu 16 (such as operation buttons 1 to 7 described later) is arranged.
[0023]
The floor plan information created as described above can be stored in the floor plan information storage database 24 in FIG. 7 by operating the “Save” button in FIG. 8 or FIG. Then, for the created floor plan information, interior simulation such as arrangement of furniture and lighting, change of interior, and the like can be performed using the interior simulator 25 of FIG. The product information such as furniture, lighting, and interior materials is read from the interior-related database 26 and pasted into a three-dimensional space. The result of the interior simulation is stored in the interior information storage database 27.
[0024]
13 to 16 show screen display examples of the interior simulator 25 shown in FIG. In the figure, 1 is a two-dimensional display button, 2 is a three-dimensional display button, 3 is an automatic viewpoint moving button, 4 is a moving speed setting / display section, 5 is a manual viewpoint moving button, 6 is a viewpoint elevating button, 7 is furniture display. An ON / OFF button, 8 is a main screen (2D / 3D drawing area), and 9 is a sub-screen. Such a screen is displayed on the browser screen of the client 10 (such as a personal computer terminal) shown in the system configuration example of FIG. 7, and the user confirms by clicking the viewpoint control menu of the operation units 1 to 7 with the mouse cursor. You can freely change the viewpoint according to the content you want.
[0025]
First, an operation unit for switching between two-dimensional display and three-dimensional display will be described. When the 2D (two-dimensional display) button 1 shown in FIGS. 13 to 15 is operated, the display of the main screen 8 becomes a two-dimensional display as shown in FIG. In the figure, B indicates the viewpoint position in the three-dimensional display by a butterfly mark flying in the virtual space, and C indicates the line of sight in the three-dimensional display by an arrow. In addition, L and R indicate viewing angles, a straight line L means the left end of the three-dimensional display field of view, and a straight line R means the right end of the three-dimensional display field of view. When the 3D (three-dimensional display) button 2 shown in FIG. 16 is operated, the display of the main screen 8 becomes a three-dimensional display as shown in FIGS. At this time, the main screen 8 is a display reflecting the viewpoint, the viewing direction, and the viewing angle in the two-dimensional display of FIG.
[0026]
As described above, by providing the operation unit for switching between the two-dimensional display and the three-dimensional display, when the user moves in the three-dimensional virtual space and presses the button of the two-dimensional display, the virtual space presented in a bird's eye view is displayed. At the same time, a position marker [a place where the user stood in the three-dimensional virtual space (a butterfly mark B) and a viewing direction (an arrow C or the like)] is displayed. This is effective for grasping where the whole is while moving in the three-dimensional virtual space.
[0027]
In addition, as is apparent from comparison between the three-dimensional display of FIG. 15 and the two-dimensional display of FIG. 16, there is a feature that the mounting position and the mounting angle of the lighting fixture 30 can be clearly grasped by a bird's eye view. In the example shown, it can be seen that the lighting fixture 30 is directly above the table. Further, in the two-dimensional display state shown in FIG. 16, an operation unit 81 for setting the layout direction is displayed on the main screen 8, and by dragging an N arrow indicating north of the direction with a mouse. , The direction of the floor plan can be set.
[0028]
Next, an operation unit for switching between automatic viewpoint movement and manual viewpoint movement will be described. The operation unit 3 in FIGS. 13 to 16 is an operation unit for automatic viewpoint movement. When the button described as “AutoNavi” is operated, the floor plan of the house displayed on the sub screen 9 in FIG. The viewpoint is automatically moved along the route indicated by the thick line. In the figure, ▲ indicates the start point of automatic viewpoint movement, and ● indicates the end point of automatic viewpoint movement. The operation unit 5 in FIGS. 13 to 16 is an operation unit for manually moving the viewpoint, and changes the direction of four triangular buttons for moving the viewpoint B to the front, rear, left and right and the direction of the arrow C indicating the line of sight. The automatic viewpoint movement is stopped and the operation is switched to the manual viewpoint movement when one of the buttons is operated. In FIGS. 13 to 15 which are three-dimensionally displayed, on the right side of the main screen 8, a button 35 for increasing / decreasing the elevation angle or the depression angle in the line of sight with respect to the horizontal plane by a predetermined angle is arranged. The direction of the line of sight can also be set arbitrarily in the direction "".
[0029]
Next, the operation unit 4 for changing the moving speed of the viewpoint is provided with buttons of slow, normal, and fast so that the moving speed of the viewpoint can be selected in three stages. In the illustrated example, the normal speed setting is set. However, when the slow or fast button is operated, the viewpoint moving speed can be changed to a setting lower than normal or a setting higher than normal.
[0030]
Next, images of "adult" and "child" are drawn on the operation unit 6 for changing the height of the viewpoint, and the current height of the viewpoint is displayed as a numerical value during that time. In this example, when the "adult" button is pressed, the height of the viewpoint increases by 10 cm, and when the "child" button is pressed, the viewpoint height decreases by 10 cm. . At the same time as the operation of changing the height of the viewpoint, the display of the height of the viewpoint is also changed.
[0031]
Next, the operation unit 7 for switching the presence or absence of furniture display will be described. Furniture is not displayed in the three-dimensional virtual space displayed on the main screen 8 in FIG. 13, but when the “furniture arrangement” button on the operation unit 7 is operated in this state, the furniture display in FIGS. It switches to the state of. Further, when the "furniture erasure" button of the operation unit 7 is operated in a state where the furniture is displayed, the state is switched to a state where the furniture is not displayed in FIG.
[0032]
On the sub-screen 9 in FIG. 13, a selection column 41 of the product information of the interior material stored in the interior-related database 26 which can be used from the interior simulator 25 shown in FIG. 7 is displayed. The user can select a wall material, a floor material, a ceiling material, and the like with a mouse, and paste the selected material onto the wall, floor, ceiling, or the like of the main screen 8 in FIG. The ceiling material can be changed freely.
[0033]
On the sub-screen 9 in FIG. 14, a product selection field 31 is displayed in which furniture (table, sofa, etc.) that can be arranged in the room with the floor plan and other (curtain, houseplant, etc.) can be selected with a mouse. By sticking the selected product on the main screen 8 and adjusting the direction with the product operation button 33, the desired furniture can be arranged at a desired position in a desired direction.
[0034]
On the sub-screen 9 in FIG. 15, a product selection column 31 for selecting a lighting fixture 30 to be arranged in a room with a floor plan is displayed. A product description screen 34 is provided below the product selection field 31. When the mouse cursor is placed on any of the products displayed in the product selection field 31, a description of the product is displayed on the product description screen 34. When the left mouse button is double-clicked in this state, the image of the product is composited and displayed in the background space. Further, a product operation button 33 is provided for exchanging the selected product, rotating the product in a horizontal plane, or deleting the selected product. Thereby, a favorite lighting fixture can be arranged at a desired position in a desired direction.
[0035]
The interior information created as described above is stored in the interior information storage database 27 of FIG. When a save button (not shown) is pressed in the interior simulation system, a save command is transmitted to the server, and the selected interior and its arrangement information are stored in the interior information storage database 27. At the same time, the interior information is associated with the database 24 storing the floor plan during the simulation, and information for the association is stored in the database 24. Thus, when the floor plan information is called, the interior information corresponding to the floor plan information can also be called.
[0036]
In this way, it is possible to change the interior, furniture, lighting equipment, etc., so that it is possible to study more specific designs while imagining life, rather than just studying floor plans. There is an effect that it is easy to grasp the feeling. In addition, since the interior simulation function is provided, a vendor (lighting fixture, furniture, interior material maker, etc.) that sells products to be installed in a house can select an interior simulation product (see FIGS. 13 to 15). , The products handled by the company can be posted and used as product introduction and sales methods. Consumers can use the floor plan design software to generate a floor plan for arranging purchased products (lighting fixtures and the like), and select a product suitable for the size and interior of the room by interior simulation. In addition, by storing data such as price and construction cost in the database of interior products, it becomes possible to estimate the selected products.
[0037]
As described above, it is assumed that the user creates a floor plan, selects interior materials, arranges furniture, arranges lighting fixtures, and completes a room image diagram as exemplified in the main screen 8 of FIG. . When this screen is displayed, if the "CG perspective" button 32 provided above the product selection field 31 in FIG. 15 is clicked on with a mouse, the input screen for the CG perspective drawing service shown in FIG. 1 appears. . When the user inputs the e-mail address and operates the “OK” button on the input screen of FIG. 1 as described above, an instruction to create a CG perspective diagram is transmitted from the client 10 to the server 20. Thereby, the floor plan information stored in the floor plan information storage database 24, the type and arrangement information of the interior materials, furniture, and lighting fixtures stored in the interior information storage database 27, and the viewpoint information temporarily stored in the three-dimensional display software 23 , A lighting simulation reflecting the light distribution characteristics and the mounting position of the lighting fixture selected by the user is performed, and the result can be provided as a high-resolution CG perspective diagram.
[0038]
Lighting simulation technology itself has existed in the past, but if it were to be realized on the Internet, creating a three-dimensional space that would be the premise of lighting simulation, arranging interior materials and furniture, lighting equipment, the position of the viewpoint and the direction of the line of sight It is necessary to input various information such as setting of the information, and it is virtually impossible for the user to create all of the information and to transmit the information to the server. According to the system of the present invention, necessary software such as floor plan design software, interior simulator, and three-dimensional display software is arranged on the server 20 side, and the user can also set the viewpoint position and line-of-sight direction by pressing the “CG perspective” button. Since the position of the viewpoint and the direction of the line of sight when 32 is pressed are known on the server 20 side, even if the communication capacity between the client 10 and the server 20 is small, the machine performance of the client 10 is low. Even so, it is possible to provide a lighting simulation service. That is, on the server 20 side, the floor plan information stored in the floor plan information storage database 24, the interior information stored in the interior information storage database 27, and the position of the viewpoint when the user presses the "CG perspective" button 32 Then, the calculation of the illumination simulation may be performed based on the information on the gaze direction.
[0039]
The calculation of the lighting simulation is performed by lighting calculation software 51 provided in the server 20, as shown in FIG. The lighting calculation software 51 includes all software for generating a three-dimensional model for lighting calculation and setting parameters necessary for lighting calculation, and includes the shape of the lighting fixture stored in the lighting calculation database 52. Lighting simulation is performed using data, light distribution characteristic curve data, light source color temperature characteristics (light bulb color, daylight white, bluish white, etc.), data of lamp shade surrounding the light source, reflectance, transmittance, etc. You can do it.
[0040]
The image effect processing software 53 reads out a set of parameters stored in the parameter database 54 according to the image quality type, and is used to create a CG perspective diagram with different image quality as illustrated in FIG. The created CG perspective diagram is stored in the created image storage database 55, and can be organized and browsed using the net album software 56.
[0041]
The first storage unit storing the light distribution characteristics of the plurality of lighting fixtures of claim 1 corresponds to the lighting calculation database 52, and the second storage unit holding the floor plan information of the house is a floor plan. The third storage unit corresponding to the information storage database 24 and holding the information on the mounting positions of the lighting fixtures corresponds to the interior information storage database 27, and the fourth storage unit holding the information of the viewpoint for observing the floor plan. Corresponds to the storage unit of the viewpoint information temporarily stored in the three-dimensional display software 23, and the fifth storage unit that holds the created CG perspective diagram corresponds to the created image storage database 55. are doing. Each database 22, 24, 26, 27, 52, 54, 55 in FIG. 7 is configured using a hard disk or the like of the server 20, and each software 21, 23, 25, 51, 53, 56 manages the server 20. It is needless to say that it is a program that can be executed under, and necessary information can be mutually referred to.
[0042]
The CG perspective diagram created in this way is attached to a board for a presentation for a client from a construction company and used as a material for a housing proposal. At this time, if the owner's family photograph and the like captured by the digital camera can be incorporated into the CG perspective diagram, the presence can be enhanced and the owner's emotion can be introduced. As for typical furniture such as tables and chairs, a large number of CG parts are prepared in the interior related database 26 in advance so that the owner can select the closest thing that is owned by the owner. Alternatively, a digital image of the furniture owned by the owner may be taken into a CG perspective diagram.
[0043]
In addition, the CG perspective diagram can be used for applications other than for a specific client. For example, the completed CG perspective diagram can be disclosed to an unspecified number of people on a homepage on the Internet and used as a house proposal tool. In the past, home sales flyers and proposals contained floor plans and photographic images that were not directly related, and consumers had little information to make decisions. Even in the case of an advertisement for a condominium, only the image of the common part such as the entire exterior and entrance is posted, and only the floor plan as shown in Figs. 17 (a) and (b) is posted for the exclusive part. Most were. By using the CG perspective diagram creation system of the present invention, as shown in FIGS. 17C and 17D, a space unique to each floor plan (property) can be three-dimensionally displayed using a high-resolution CG perspective diagram. Therefore, it is possible to provide an image that can be easily understood by general consumers who cannot understand the floor plan accurately.
[0044]
Conventionally, CG perspective diagrams of houses were created by specialists. At that time, there are two methods. One is to decide the viewpoint that looks best and then draw the perspective like a picture or illustration. The other is a method of redrawing three-dimensional data in two dimensions by a perspective drawing method. The former method lacked flexibility, and it was difficult to select an arbitrary viewpoint according to the situation of the site and the order of the owner.However, since the present invention belongs to the latter method, various situations of the site are different. It is possible to provide a high-definition CG perspective diagram easily and quickly at a low cost according to the demands of the owners of various people, and therefore, it is possible for a wide range of users to have a high degree of reality based on the floor plan of the house. It is useful as a tool for grasping the image.
[0045]
The net album software 56 shown in FIG. 7 is composed of a servlet and a JSP, and can browse a CG perspective diagram created by a user. In addition, the net album software of this embodiment provides a function that allows a browser to browse an omnidirectional CG perspective diagram in a plug-in format. This omnidirectional CG perspective diagram refers to an image that allows browsing a 360-degree panoramic image while keeping the viewpoint position by combining a plurality of CG perspective images. When browsing the omnidirectional CG perspective diagram, it is possible to browse the image in that direction by placing the mouse on the omnidirectional CG perspective diagram in the browser and dragging in the direction in which the user wants to browse. I have.
[0046]
The omnidirectional CG perspective diagram is created using the illumination calculation software 51a. Similarly to the lighting calculation software 51, the lighting calculation software 51a generates a three-dimensional model, sets parameters necessary for lighting calculation, and performs a lighting simulation based on the information. Here, the lighting calculation software 51 outputs an image (JPEG file) viewed from the viewpoint as its output, while the lighting calculation software 51a outputs an omnidirectional CG perspective diagram. Here, when outputting the omnidirectional CG perspective diagram, the illumination calculation software 51a creates six CG perspective diagrams by repeating, for example, changing the direction of the gazing point by 60 degrees six times, One omnidirectional CG perspective diagram is created by a method such as combining them while correcting their edges.
[0047]
Next, another embodiment is shown in FIG. 18 and described. In this embodiment, a plurality of servers 201, 202, 203,... Have distributed software 51 for lighting calculation for creating a CG perspective diagram. Further, the point that the server 201 has a user authentication unit 211 and a user information database 212 is different from the previous embodiment. Also, the servers 201, 202, 203,... Equipped with the software for lighting calculation have a function of detecting a load condition.
[0048]
In the CG perspective diagram creation system using the Internet according to the present invention, a user serving as a client accesses the system by inputting a URL via the Internet. In this embodiment, a user of the system registers in advance user information such as an e-mail address, a name, and a password, and stores the registered information in a user information DB. When the user uses the system, the server requests the user for personal authentication. The personal authentication is, for example, inputting a user ID and a password. Then, based on the user information obtained by the personal authentication, a server for creating a CG perspective diagram is selected. For example, if the user information includes an item such as a member type, an operation is performed such that a server having a high processing capability is selected according to the priority of the member type. Accordingly, one of the plurality of servers is selected based on the information of the user, so that it is possible to change the server that performs the lighting simulation according to the user. And more detailed services can be provided.
[0049]
Further, the server may be configured such that a server dedicated to image effect processing is separately provided. In this case, when a process other than the illumination calculation process is selected in the selection of the image quality type by the user, the process is requested to the server that performs only the image effect process, so that the same software (image effect process software) is continuously used. And processing efficiency can be improved.
[0050]
Further, a function of detecting a CPU load state may be provided in each server, and a server for creating a CG perspective diagram may be selected according to the load state of each server. In this case, for example, if the CPU load rate of the server for the paying member is high and the CPU load rate of the server of the non-paying member is low, processing is requested to the server of the non-paying member. I have. Also in this case, for example, it is possible to provide more detailed services such that only paying members are given priority and processing is performed.
[0051]
It goes without saying that the programs and data constituting the system of the present invention may be stored and distributed on a recording medium such as a CD-ROM or DVD-R, or may be distributed or updated online.
[0052]
【The invention's effect】
According to the system of the first aspect, the lighting effect by the lighting fixture based on the information on the floor plan of the house and the viewpoint of viewing the floor plan and the light distribution characteristics and the mounting position of the selected lighting fixture input by the operation from the Internet terminal. Is calculated, and the CG perspective diagram is created based on the calculation result, so that the construction company can easily and quickly create the CG perspective diagram at low cost according to the detailed situation of the site and the preference of the owner.
According to the method of claim 2, the floor plan information input as a plan view is converted into a three-dimensional image by an operation from the Internet terminal, and the luminaire selected by the operation from the terminal is arranged. After observing the two-dimensional image, a CG perspective view can be created from the viewpoint, so that even a layman can create a CG perspective view with a simple operation.
According to the method of claims 3 and 4, since the image quality type and the viewing angle of the CG perspective diagram to be created can be designated, the presentation can be made by selecting the image quality type and the viewing angle according to the preference of the client and the situation at the site. The effect can be enhanced.
[0053]
According to the method of claim 5, since the created CG perspective diagram is stored in the server, the CG perspective diagram can be efficiently managed, and if the house layout is the same, the CG perspective diagram created in the past can be used. The figure can be reused.
According to the method of claim 6, since the incident angle of the external light can be calculated from the orientation of the floor plan and the observation time, a CG perspective diagram can be created based on the calculation result of the lighting effect by the lighting fixture and the lighting effect by the external light, The difference in appearance depending on the observation time can be confirmed.
According to the method of claim 7, since the digital image obtained by the terminal can be combined with the created CG perspective diagram, the presentation effect can be enhanced by pasting the owner's family photograph or the like.
[0054]
According to the eighth aspect of the present invention, in the illumination calculation of the CG perspective creation processing unit, an omnidirectional CG perspective view displaying an omnidirectional three-dimensional virtual space centered on the observation position is created. If it is specified, there is an effect that CG perspective diagrams can be obtained for all observation directions.
According to the ninth aspect of the present invention, since the observation direction of the omnidirectional CG perspective view can be operated by operation from the terminal, an effect that the CG perspective view for an arbitrary observation direction can be obtained by operation from the terminal can be obtained. is there.
According to the tenth aspect of the present invention, the software for calculating the lighting effect is provided in one or more separate servers, and the server for creating the CG perspective diagram is selected. There is an effect that can be used effectively.
According to the eleventh aspect of the present invention, the server is selected based on the image quality type. Therefore, it is possible to flexibly cope with allocating a large capacity of the server for the high definition image quality as compared with the standard image quality.
According to the twelfth aspect of the present invention, the user is authenticated by the server, and the server is selected according to the information of the authenticated user. Therefore, the contents of the service can be finely changed between the regular member and the temporary member. it can.
According to the invention of claim 13, since the server is provided with means for detecting the load status and the server is selected in accordance with the load status, if the server has surplus capacity, the temporary member also has a high level of capability. Service can be provided.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an example of an input screen of a CG perspective diagram creation service by the system of the present invention.
FIG. 2 is an explanatory diagram illustrating a difference between images before and after an illumination process according to the present invention.
FIG. 3 is an explanatory diagram illustrating a difference between images according to image quality types in a CG perspective diagram according to the present invention.
FIG. 4 is an explanatory diagram exemplifying a difference in an image depending on a viewing angle of a CG perspective view in the present invention.
FIG. 5 is an explanatory diagram exemplifying a difference in an image according to an observation time of a CG perspective diagram in the present invention.
FIG. 6 is an explanatory diagram exemplifying a difference in an image due to a detailed setting of a CG perspective diagram in the present invention.
FIG. 7 is a block diagram showing a schematic configuration of a system of the present invention.
FIG. 8 is an explanatory diagram showing an example of a display screen of floor plan design software used for implementing the present invention.
FIG. 9 is an explanatory diagram showing another example of the display screen of the floor plan design software used for implementing the present invention.
FIG. 10 is an explanatory diagram showing an example of a floor plan design method using floor plan design software used for implementing the present invention.
FIG. 11 is an explanatory diagram showing another example of a floor plan design method using floor plan design software used for implementing the present invention.
FIG. 12 is an explanatory diagram showing functions of three-dimensional display software used for implementing the present invention.
FIG. 13 is an explanatory diagram showing an example of a display screen of an interior simulator used for implementing the present invention.
FIG. 14 is an explanatory diagram showing another example of the display screen of the interior simulator used for implementing the present invention.
FIG. 15 is an explanatory diagram showing still another example of the display screen of the interior simulator used for implementing the present invention.
FIG. 16 is an explanatory diagram showing another example of the display screen of the interior simulator used for implementing the present invention.
FIG. 17 is an explanatory diagram showing an application example of a CG perspective diagram in the present invention.
FIG. 18 is an explanatory diagram showing another embodiment of the present invention.
[Explanation of symbols]
10 clients
20 servers
21 Floor plan design software
22 Parts database
23 3D display software
24 Floor plan information storage database
25 Interior Simulator
26 Interior Related Database
27 Interior Information Storage Database
32 CG perspective drawing button
51 Lighting Calculation Software
52 Lighting Calculation Database
53 Image Effect Processing Software
54 Parameter Database
55 Created Image Storage Database
56 Net Album Software

Claims (13)

A first storage unit that stores, on a server on the Internet, light distribution characteristics of a plurality of lighting fixtures that can be selected by an operation from an Internet terminal, and a first storage unit that stores house layout information input by an operation from the terminal. 2 storage unit, a third storage unit that holds information on the mounting position of the lighting fixture selected according to the layout of the house by operation from the terminal, and the floor plan specified by the operation from the terminal. A fourth storage unit for storing information of a viewpoint for observing the image, and a CG perspective diagram obtained by observing the floor plan from the viewpoint based on the information stored in the first to fourth storage units. A CG perspective diagram creation processing unit that creates the CG perspective diagram based on the calculation result of the lighting effect; and a fifth storage unit that holds the created CG perspective diagram as electronic data that can be transmitted to the terminal. CG perspective diagram creation system using the Internet, characterized in Rukoto. A method for creating a CG perspective diagram using a server on the Internet, the server comprising: a database storing light distribution characteristics of a plurality of lighting devices; and software for calculating a lighting effect by the selected lighting devices. And at least software for converting the floor plan information input as the plan view into a three-dimensional image.
Holding the floor plan information input as a plan view by operation from the Internet terminal;
Converting the floor plan information into a three-dimensional image and displaying it on the screen of the terminal;
Holding information on the mounting position of the lighting fixture selected in accordance with the floor plan by operation from the terminal,
Holding information about a viewpoint for observing the three-dimensional image specified by an operation from the terminal;
Creating a CG perspective diagram when observing the floor plan from the designated viewpoint using information on the light distribution characteristics and the mounting position of the lighting fixture based on the calculation result of the lighting effect by the lighting fixture;
Transmitting the created CG perspective diagram to the terminal. 3. The CG perspective diagram creation method using the Internet according to claim 2, wherein an image quality type of the CG perspective diagram to be created can be designated by an operation from the terminal. 4. The CG perspective diagram creation method using the Internet according to claim 2, wherein a view angle at the time of creating the CG perspective diagram can be designated by an operation from the terminal. 5. The method for creating a CG perspective diagram using the Internet according to claim 2, further comprising a step of storing the created CG perspective diagram on a server. A step of storing information on the orientation and observation time of the floor plan designated by the operation from the terminal, and in the step of creating the CG perspective diagram, based on a calculation result of a lighting effect by a lighting fixture and a lighting effect by external light. 6. A method for creating a CG perspective diagram using the Internet according to any one of claims 2 to 5, wherein the CG perspective diagram is created using the Internet. The method for creating a CG perspective diagram using the Internet according to any one of claims 2 to 6, further comprising a step of synthesizing the digital image acquired by the terminal with the created CG perspective diagram. The illumination calculation of the CG perspective creation processing unit includes a step of creating an omnidirectional CG perspective view displaying an omnidirectional three-dimensional virtual space centered on the observation position. A CG perspective drawing creation method using the Internet according to any of the above. 9. The method according to claim 8, further comprising a step of storing the created CG perspective view and a step of publishing the CG perspective view from the terminal, wherein the observation direction can be operated by an operation from the terminal. CG perspective drawing method using the Internet. The software according to any one of claims 2 to 9, wherein the software for calculating the lighting effect is provided in one or more different servers, and a step of selecting a server for creating a CG perspective diagram is provided. The CG perspective diagram creation method used. The method according to claim 10, wherein in the step of selecting the server, the selection is performed based on the image quality type. The CG using the Internet according to claim 10, wherein a step of performing user authentication is provided in the server, and a server is selected in accordance with information of an authenticated user in the step of selecting the server. How to create a perspective. 11. The CG perspective creation method using the Internet according to claim 10, wherein the server is provided with means for detecting a load condition, and at the stage of selecting the server, a server is selected according to the load condition. .

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