JP2000067100A - House coordinate supporting system and record medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for supporting house coordinate for operating optimal texture mapping also to a curved surface part in a house exterior part. SOLUTION: An image memory 2, display 9, keyboard 10, mouse 11, and digital camera 1 are connected with an image processing computer 3, and a 3D-CAD set 12 is integrated into the image processing computer 3. The appearance of a house is stored in a house appearance pattern data file 4, and the background is stored in a background pattern data file 5, and the textures of house materials from plural directions are stored in a stereoscopic texture data file 6, and original data for operating shade calculation are stored in a shade calculation data file 7, and concerning illuminance, illuminance related with a vertical face and an inclined face and a correction value by weather are stored in an illuminance calculation data file 8. the stereoscopic texture data are mapped to a curved surface part in a house exterior part and displayed so that the house with a sense of reality can be reproduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a house coordination support system for assisting coordination by displaying a curved surface area so that good reproducibility can be obtained when coordinating the exterior of a house.

[0002]

2. Description of the Related Art Generally, most of the appearance of a building is constituted by a combination of a plurality of planes. That is, the main elements constituting the exterior of the building are the outer wall and the roof, and most of them are planes (FIGS. 11 and 12).
Please refer to the example of Japanese style style classification shown in. (a). Traditional Japanese style (b). New Japanese style (c). Regional Japanese style (d). Japanese style arrangement (e).

However, looking at the building partially,
There are quite a few parts where curved surfaces are used. For example, curved surfaces are often used for balconies, bay windows, corners, corners, roofs, and the like of buildings. When such a curved surface is used, the impression of the appearance of the building can express a soft feeling that was never exhibited when only the plane is used, and the design of the whole building is greatly improved.

[0004] Examples of towers having a "pointed hat" roof and a cylindrical outer wall (such as a clock tower), such as those found in Western architecture, entasis-type columns, Japanese tile roofs, corrugated roofs, and domes There are quite a few cases where curved surfaces are partially used in buildings, such as roofs with a shape or roofs with a kamaboko shape (such as a gymnasium).

[0005] However, in a conventional CAD system used for coordinating the exterior of a building using building boards and roofing materials, the outer wall and roof of the building are treated as having an almost planar configuration. It has become. This is based on the fact that, as described above, the Japanese-style house style is expressed in an almost planar configuration.

[0006] Therefore, regarding the texture mapping performed on the outer wall portion or the like, the handling of the curved surface is not performed at all, or the handling is not performed accurately. The operator simply selects an appropriate one of a plurality of basic texture data stored in a file in advance, and pastes it by designating a corresponding area of a plane portion in the building image displayed on the display. They respond by simple tasks such as attaching them, shading them with their own feelings, and performing retouching operations so that even a little realism can be expressed in the building.

More specifically, in the example of coordination of a house shown in FIG. 13, since there are many outer wall portions to which a texture is to be attached, a process of simply repeating basic texture data in a corresponding region is executed. Mapping has been done.

[0008] The present inventor has disclosed a prior application (Japanese Patent Application No. 10-14 / 1998).
No. 0043) discloses a method of improving the color information of the basic texture data and realizing the texture mapping by acquiring and using the frequency characteristic information of the actual pattern. In addition, an expression method has also been disclosed in which texture data from several directions to be represented is prepared in advance, so that it is possible to cope with the visual sense from an oblique direction. As a result, the real feeling that was almost impossible with the conventional method is changed to 2
It is possible to express in a D-CAD system.

In recent years, when coordinating the exterior of a building, introduction of a system using 3D-CAD has been studied. According to this method, a three-dimensional representation of the building is performed, so that the building itself can produce a substantial realism with a three-dimensional effect. In addition, most rendering software creates and pastes two-dimensional texture data, which is basic as a two-dimensional image, as square image data.

In the case where the object to be displayed is a simple curved surface such as a sphere or a cylinder, the affine transformation is performed and the perspective transformation is performed because the projection view itself always becomes the same circle or rectangle even if the viewing direction is changed. Thus, it is possible to obtain a decent effect simply by pasting it on the corresponding area. Also, C
In a G (computer graphics) method, a method such as bump mapping, which is used for expressing a texture and gives a texture to the eyes of a display person (an irregular shape on the surface of an object by CG, specifically, a difference between normal vectors) This is a method of pasting data).

[0011]

However, FIG.
Can be said to be a process that can be performed because the attachment region is a plane. In other words, as is apparent from this example, the texture is pasted onto the relevant portion by simply processing the basic data at a predetermined angle, even though the outer wall is in a perspective view obliquely visible. It is attached. Actually, many building boards are constructed so as to be joined in the vertical and horizontal directions on the outer wall part, and even though the brick pattern of each building board is randomly formed, In this example, since only the processing of repeating the basic texture data is performed, a rough feeling can be expressed, but the monotonous feeling of the pattern cannot be completely wiped out.

[0012] Further, each building board is very rarely completely flat, and most has an uneven shape composed of convex portions and joint portions (or grooves or concave portions). 14 and 15), in the example, such a three-dimensional shape is completely ignored. Therefore, as a result, it becomes inevitable to become a dramatic.

Further, the invention disclosed in the earlier application of the inventor of the present invention functions very effectively for a building having a planar configuration, but does not mention texture mapping for curved surfaces in a house. Not. from now on,
When thinking about a wide variety of user preferences, rich personality expressions, and new town building,
It seems that the number of cases in which the curved surface portion is provided as described above is increasing. Building parts having various curved surfaces, such as corrugated and dome-shaped roofs, have different appearances over a considerable range depending on the viewing direction. Therefore, the basics that must be acquired in advance in a 2D-CAD system There is a disadvantage that the number of data becomes extremely large.

[0014] Also, no matter how much the three-dimensional representation of a building is enriched by the 3D-CAD system, accurate handling of the pasting of a texture to be exposed on its outer wall or roof is not performed. As long as you don't want to be able to coordinate your home exterior with a satisfying sense of realism. Even with the two-dimensional texture data of the rendering software, it is not possible to paste the building as it is when viewed from an oblique direction or on a curved surface portion of the building.

In the case where affine transformation is simply performed, perspective transformation is performed, and the acquired two-dimensional image data is pasted to the corresponding area, the acquired two-dimensional image data is handled as it is, so that an unnatural feeling is left. That is inevitable. In a building designed with free ideas, there will be curved parts with various shapes, and trying to express realism in texture mapping there,
Normal affine transformation alone cannot handle it.

Even if the method of bump mapping is used as it is, it merely forms and attaches a fictitious image that makes the viewer of the display illusion that there is a texture, so that it can be applied to any texture. Not at all. In view of the above problems, an object of the present invention is to provide a house coordination support system capable of performing optimal texture mapping even on a curved surface portion of an exterior part of a house, and a recording medium thereof.

[0017]

A house coordination support system according to the present invention includes an image memory for storing three-dimensional image data of a surface of a building material, and a building material to be displayed from a plurality of building materials for a specific curved surface area of the house. Building material selecting means to select, image calculating means for calculating display image data when the three-dimensional image data of the building material selected by the building material selecting means is read from the image memory and pasted on the curved surface area, and Display means for displaying the calculated display image data in the curved surface area.

Further, since the image memory stores hologram data of the surface of a building material, it is possible to store data in a form suitable for the characteristics of the building material. Further, since the image memory stores the Fourier transform data of the surface of the building material, the data can be efficiently stored when the image of the surface of the building material has periodicity.
Further, since the image memory separately stores the image data of the protrusions and the image data of the grooves on the surface of the building material, the same type of data is stored, and the data compression ratio can be increased.

Further, the image calculation means maps the three-dimensional image data on a plane part and converts the three-dimensional plane image data into a curved surface, so that the mapping process and the curved surface conversion process are separated. In other words, general-purpose software can be used effectively. Further, the image calculation means calculates display image data according to a distance from a building material to be displayed to a position at which a house is observed,
It is possible to reproduce the surface of the building material with a real feeling.

Further, by providing direction input means for inputting the direction in which the house is observed, the house can be reproduced from various angles. Further, by providing a distance input unit for inputting a distance for observing the house, the house can be reproduced from various visual distances. Further, the present invention is a computer-readable recording medium in which a program for causing a computer to function as the house coordination support system is recorded.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a diagram showing a system configuration according to an embodiment of the present invention. Image data taken by the digital camera 1 is stored in an image memory 2 and processed by an image processing computer 3, and if it is a house appearance, it is stored in a house outdoor view pattern data file 4, and if it is a background, If it is a texture, it is stored in the background pattern data file 5, and if it is a texture, it is stored in the three-dimensional texture data file 6.

With respect to the shade calculation, the original data from which the shade calculation can be performed by determining the direction of the sun position and the elevation angle with respect to the season, month, day, and time, are used as shade calculation data.
The information is stored in the file 7 and is used for displaying a shade by designating a season or a date and time. Regarding the illuminance calculation, the illuminance on the vertical plane and the inclined plane and the correction value due to weather are stored in the illuminance calculation data file 8 with respect to the season, month, day, and time, and Are used for display at a predetermined illuminance.

The image processing computer 3 is connected with a display 9 for displaying data, a keyboard 10 for inputting necessary data, and a mouse 11 for operating a cursor on the display 9.
Is incorporated. With the keyboard 10 or the mouse 11, the direction of observing the house and the distance of observing the house can be input. In particular, if the mouse 11 is clicked, the user can simultaneously input the direction and distance for observing the house by clicking the position for observing the house.

This embodiment considers how to reproduce the color and pattern of the surface texture of some actual objects to be pasted and how to express the texture on a curved surface portion, based on the CG method. New 3D-CAD
A system was built. First, as the surface texture data of the building board to be obtained, three-dimensional data is obtained, instead of the conventional two-dimensional data (often data is obtained from a photograph). Three
Various methods have been proposed as a method of accumulating dimensional data, but a “holography” format is adopted in consideration of applicability to a system to be constructed.

Here, the holographic technique will be described briefly (see FIGS. 17 to 19). The holographic technique is to photograph-record a light wave generated by reflected light (or transmitted light) from an object O which is coherently irradiated by using interference (referred to as hologram recording, FIGS. 17 and 19).
(a)), the original light wave is reproduced by the diffraction that occurs when light is applied to the recorded fine interference fringes (image reproduction,
FIG. 18 and FIG. 19 (b)). And
By executing the two-step procedure, when the object O is a three-dimensional object, a true three-dimensional image is formed.

In the hologram recording, the interference fringes generated when the object wave OL and the reference wave RL due to the light from the same light source (a coherent light having a high coherence is used) are superimposed on the hologram. A hologram is created by recording on a photographic plate H as an image recording material. In this hologram, the amplitude and the phase of the object wave OL are recorded in the form of the contrast and the phase of the interference fringe, respectively. This interference fringe is, for example, 1000 to 7 per mm.
There are about 000 stripes (called interference fringe zone plates), which include information about the brightness of the object O (amplitude) and information about the direction from which light came (phase). ing.

The laser is used in hologram recording because the laser has a single wavelength, and when this light is divided into two and superimposed again, it is stable both temporally and spatially. This is because interference fringes are obtained. Further details will be described. In general, it is not possible to directly record the complex amplitude distribution (ie, the amplitude distribution and the phase distribution) of a wave (light is also a wave). Only the light intensity distribution can be measured directly. The photograph is a recording of the light intensity distribution, in which two-dimensional position information of pixels having luminance information is recorded in an analog manner. That is, it is a projection view as viewed from the shooting position, and is a two-dimensional image in which the brightness distribution of the image is reproduced.

On the other hand, in holography, recording and reproduction of the complex amplitude distribution are enabled by introducing a carrier component, as described above. Now, assuming that the reflected light (object wave OL) from the object O is f (x, y), it can be expressed as f (x, y) = A (x, y) exp [iφ (x, y)].

In the above equation, A (x, y) is f
An amplitude distribution of (x, y), which is determined by the transmittance or reflectance of the object O. Φ (x, y) is the phase distribution of f (x, y) and is determined by the shape and refractive index of the object O. When f (x, y) is directly recorded, the recording intensity becomes I
Since (x, y) = | A (x, y) | ² , the phase distribution information is lost. The human eye feels a value obtained by squaring the amplitude.

Then, the object O is regarded as a set of point light sources,
The propagation direction of light from the object light source to the photographic plate H is defined as the z-axis,
A plane wave (referred to as a reference wave RL) is incident on the photographic dry plate H from a direction inclined by an angle θ with respect to the z axis, and is recorded while being superimposed on the object wave OL incident on the photographic dry plate H from a perpendicular direction. Then, a hologram is formed on the photographic plate H.

Now, let the reference wave RL be r (x, y) = Rexp [i
2π (x sin θ) / λ] (R: amplitude, λ: wavelength of light), I (x, y) = | f (x, y) + r (x, y) | ² = | A (x, y) | ² + | R | ² + A (x, y) R cos [φ (x, y) −2π (x sin θ) / λ] In this equation, the term of Rcos [‥‥‥] represents an interference fringe, in which φ (x, y) which is phase distribution information.
It is included. Now, a description will be given of how a texture can be pasted on a curved surface of a building stereoscopically displayed by CG based on the above-described holography theory with a realistic feeling.

First, what basic texture data should be created will be described. In the present embodiment,
As the basic texture data, not only the two-dimensional shape on the surface of the building board but also depth information (see FIGS. 14 and 15) on the surface is acquired. In this case, the hologram may be created by actually recording the interference fringes. However, the diffraction and interference are calculated by a computer, and the wavefront arriving at the hologram surface is obtained to obtain the amplitude and phase distribution information of the object wave OL. (Note that the hologram created based on the information obtained in this way is
Called a computer generated hologram). That is, the hologram is actually recorded as interference fringes,
Since the interference fringes give a difference in the shape of the wavefront, the spatial phase distribution of the light reflected by the object O is determined,
That is, the surface shape of the reflection surface of the object O can be obtained.

Specifically, the following operation is performed. That is, first, prior to the above-described diffraction and interference calculations, the digital camera 1 uses FIG.
An architectural board as shown in Fig. 6 is photographed. Then, the obtained surface image data is divided into convex portion data and groove portion data, FFT (Fast Fourier Transform) is performed on each data, and the result is stored in a memory as two-dimensional texture data.

Next, as described below, diffraction,
An interference calculation is performed, and phase distribution information of the object wave OL is obtained from the interference calculation. Then, the image data is stored in the image memory as three-dimensional array texture data in combination with the already obtained two-dimensional texture data.

In performing the diffraction and interference calculations, first, image data of a building board (object) from several photographing angles is obtained, and three-dimensional image data is obtained in advance. The distance from the photographic dry plate H as the recording material is L1, and the laser to be used is, for example, a helium-neon laser LO (wavelength 632.8 nm, output 5 mW).
Beam splitter BS, which is the optical path on the reference light side, → mirror M
1 → the distance from the observation surface H and the distance from the beam splitter BS which is the optical path on the object light side → the mirror M2 → the object O → the observation surface H are both L2, and the incident angle of the reference light is θ = 30 to 4
The hologram calculation is performed on the assumption that the angle is 5 degrees.

Here, in performing the hologram calculation,
The diffraction and interference phenomena will be described once again. When the object O is viewed from the observation plane H when the object O is regarded as a set of point light sources, 2
It is considered that the Fraunhofer diffracted waves have reached the observation plane H from the openings f (x, y) arranged in a three-dimensional lattice.
This is the slippery object wave OL. Since the object O has a three-dimensional three-dimensional shape, the object wave OL is obtained by superimposing light emitted from each point on the object surface, and its wavefront is a considerably complicated wavefront.

In the calculation, the object wave OL and the reference wave RL are both spherical waves. However, if attention is paid only to a very narrow portion on the hologram surface, it is assumed that the plane wave has reached there. Can be calculated. Also,
The reference wave RL is a single-wavelength laser that is incident on the observation plane H at an incident angle θ, and its physical property values are known.

In this manner, the information on the spatial frequency distribution of the projections and the grooves on the surface of the building board and the information on the phase distribution corresponding to each are individually obtained, and the phase distribution is stored in the two-dimensional texture data described above. The three-dimensional array texture data (which serves as a mapping material), that is, basic texture data, is obtained in a format to which the data is added (see FIG. 3).

More specifically, the surface three-dimensional information of the convex portion and the groove portion can be individually obtained, but the mapping of the basic texture to the curved surface portion of the building can be performed by individually obtaining the information. Depending on the target curved surface shape,
You will be able to do it smoothly without difficulty. The operation will be described later (see FIG. 7).

Secondly, in the present embodiment, how the mapping material, which is the three-dimensional data of the building board surface obtained as described above, is attached to the curved surface created by the CG method. I think about the following. The concept will be described below. First,
The basic operation in CG will be described.

In CG, an object O in a virtual space is
By a process called modeling using software called a modeler, parameters such as a light source and a camera
It is defined in a dimensional space. By projecting it on a virtual two-dimensional screen by rendering processing, an image that can be seen by human eyes is generated.

The rendering process is configured as a set of programs having several functions, and a series of these processes is called a rendering pipeline.
The rendering pipeline function includes a coordinate conversion function, a hidden surface processing, a clipping function, a perspective function, a shading function, a shadow wing function, a mapping function, an anti-aliasing function, and the like (all of which are known as CG functions). is there).

The present embodiment relates to a mapping function (a technique for enabling a richer expression by pasting two-dimensional data onto a three-dimensional surface) in the above-described rendering processing. is there. More specifically,
Adding a texture-imparting method such as the bump mapping method (described above) to the texture mapping method (a method of attaching various textures to the surface of the object O made by CG to give a texture). Thus, the present invention is devised so that a three-dimensional texture mapping with a very realistic feeling can be realized even on a curved surface of a building.

In the modeling process, a shape model is created. When creating a shape model, the most appropriate shape expression (polygon, quadratic surface, parametric surface, etc.) must be selected in consideration of the contents of the target surface, the software used, the hardware environment, etc. .

In the texture mapping, a point P (x, y, z) on the surface of the object in the three-dimensional space is associated with a point Q (s, t, u) in the texture coordinate system by a certain function F. . Normally, a two-dimensional coordinate system is defined in a three-dimensional space, and coordinate conversion is performed between the coordinate system and a two-dimensional coordinate system corresponding to a plane in the texture coordinate system. It should be noted that if the definition of the two-dimensional coordinate system is not properly defined, distortion of the mapped texture will occur. The CG method described above is appropriately used in executing the present embodiment (3D-CAD in FIG. 2).

FIG. 2 is a main flowchart for explaining the basic operation of the present embodiment. First, it is determined whether or not the system power is ON (step S1). If NO, the process waits until the system power is turned ON. If YES, initial settings such as data including settings for receiving measurement data from the digital camera 1 are performed (step S2).

Next, in step S3, the 3D-CAD system is started up. In step S4, it is determined whether or not to perform texture mapping on a curved surface. If NO, texture mapping on a curved surface is not performed. For example, the process proceeds to step S6, and if the texture mapping to the curved surface portion is performed with YES, the texture mapping corresponding to the curved surface portion in step S5 is performed (detailed in FIG. 4). Step S
In 6 it is determined whether to terminate the 3D-CAD system,
If not, the process returns to step S3 to perform 3D
-If the CAD system is continued and the processing is terminated with YES, the system termination processing of step S7 is performed and the flow is terminated.

FIG. 3 is a flowchart for explaining the operation of creating basic texture data according to the present embodiment. This operation is performed before the normal display operation. First, in step S11, surface texture data of a predetermined building board and its dimensional data (width: l, length: m) are acquired through the digital camera 1. Then, the obtained surface texture data is separated into convex portion data and groove portion data in step S12. In step S13, FFT is performed on the projection data and recorded in the three-dimensional texture data file 6 (projection FFT data). In step S14, similarly, FFT is performed on the groove data and recorded in the three-dimensional texture data file 6 (groove FFT data). These become two-dimensional texture data. Next, in step S15, interference calculation is performed on the convex part FFT data to obtain convex part phase distribution data, which is recorded in the three-dimensional texture data file 6. Step S16
Then, interference calculation is performed on the groove FFT data to obtain groove phase distribution data, which is recorded in the three-dimensional texture data file 6. All of these become basic three-dimensional texture data.

FIG. 4 is a flowchart for explaining the detailed operation of the curved surface portion corresponding texture mapping (step S5) of FIG. First, modeling of a target curved surface portion in a building is performed (step S21), and surface area calculation is performed on the modeled target curved surface portion (step S22). For example, when the curved surface S is z = f (x, y), (x, y) ∈D, the surface area | S | is a double integral in the x and y directions as in the following equation.

[0050]

(Equation 1)

Next, in step S23, the target curved surface portion is developed into a vertical and horizontal rectangular plane according to the surface area as an extension of the plane portion. For example, a curved surface portion which is a protruding corner portion shown in FIG. 5 (a) or a curved surface portion which is a corner portion shown in FIG.
As shown in (c), it is developed so as to be an extension of the plane portion so that the whole becomes a plane. Similarly, in the case of the roof portion having the waveform shape shown in FIG. Then, in step S24, basic texture data is mapped to the developed rectangular plane portion (described in detail in FIG. 7). In step S25, the mapped developed rectangular plane portion is processed into a target curved surface portion shape (described in detail in FIG. 9). In step S26, the processing data thus processed is pasted on the target curved surface portion,
It returns to the original step S6.

FIG. 7 is a flowchart for explaining the detailed operation of the basic texture data mapping (step S24) of FIG. First, in step S31, it is determined whether or not there is designation of basic texture data to be pasted.
If there is no designation, the process waits until there is a designation, and if there is a designation, the process proceeds to step S32 to sequentially read the designated basic texture data from the three-dimensional texture data file 6, and reads it in step S33. The developed space of the basic texture data is corrected in accordance with the dimensions of the modeled curved surface portion. Next, step S
At 34, the three-dimensional mapping of the three-dimensional groove portion to the developed rectangular plane portion is performed based on the corrected groove portion FFT data and groove portion phase distribution data. At this time, inverse Fourier transform is performed on the FFT data, and the depth information of the phase distribution data is added. Similarly, in step S35, the corrected convex portion FFT
Based on the data and the projection phase distribution data, a three-dimensional projection of the three-dimensional projection is performed on the projection divided by the three-dimensional groove in the developed rectangular plane part. As a result, for example, FIG.
As shown in (1), a predetermined three-dimensional texture mapping is applied to a developed rectangular plane part of L × M by calculation. Next, in step S36, an image shaping process such as a roll map is performed. In step S37, it is determined whether or not the image shaping is OK. If the image shaping is not enough yet, the process returns to step S36 to continue the image shaping. If the image shaping is completed with YES, the process returns to the original step S25.

FIG. 9 is a flowchart for explaining the detailed operation of the curved surface processing (step S25) of the mapped flat portion in FIG. First, in step S41, the developed rectangular plane portion subjected to the three-dimensional mapping is put on coordinates Q (s, t, u), and
In step S42, the developed rectangular plane portion on the coordinates Q (s, t, u) is perspectively transformed with respect to the coordinates P (x, y, z) of the target curved surface portion. As shown in FIG. 10, this perspective transformation corresponds to transforming a three-dimensionally mapped developed rectangular plane portion into a curved surface of a target curved surface portion. Then, in step S43, the converted data is stored in a buffer in the image memory 2, and in step S44, an instruction to paste the data is waited, and the process returns to the original step S26.

The present invention is not limited to the above embodiment. It can be used not only for exterior simulation but also for interior simulation. Moreover, the computer-readable recording medium which recorded the program for functioning a computer as the said house coordination support system may be sufficient.

[0055]

As described above, according to the present invention, a realistic three-dimensional texture is mapped on a curved surface portion of a building. Therefore, in performing a house coordination service to a user, Works extremely effectively.

[Brief description of the drawings]

FIG. 1 is a diagram showing a system configuration according to an embodiment of the present invention.

FIG. 2 is a main flowchart illustrating a basic operation of the embodiment.

FIG. 3 is a flowchart illustrating an operation of creating basic texture data according to the embodiment.

FIG. 4 is a flowchart for explaining the operation of texture mapping corresponding to a curved surface portion according to the embodiment;

FIG. 5 is a diagram (part 1) for explaining an operation of developing a curved surface portion into a flat surface portion according to the present embodiment.

FIG. 6 is a diagram (part 2) illustrating an operation of developing a curved surface portion into a flat surface portion according to the present embodiment.

FIG. 7 is a flowchart for explaining the operation of basic texture data mapping according to the embodiment;

FIG. 8 is a view for explaining texture mapping on a plane portion according to the embodiment;

FIG. 9 is a flowchart for explaining the operation of curved surface processing of a mapped plane portion according to the embodiment.

FIG. 10 is a view for explaining perspective transformation of a plane portion to a curved surface portion in the embodiment.

FIG. 11 is a view showing an example of a Japanese-style appearance style classification (part 1).

FIG. 12 is a diagram showing a Japanese-style appearance style classification example (part 2).

FIG. 13 is a diagram showing an example of a conventional house coordinate display.

FIG. 14 shows an example of a building board (part 1).

FIG. 15 shows an example of a building board (part 2).

FIG. 16 shows an example of a building board (part 3).

FIG. 17 is a view for explaining a holography technique (part 1);

FIG. 18 is a view for explaining a holography technique (part 2);

FIG. 19 is a diagram illustrating a holography technique (part 3);

[Explanation of symbols]

 Reference Signs List 1 digital camera 4 house outdoor view pattern data file 5 background pattern data file 6 solid texture data file 7 shade calculation data file 8 illuminance calculation data file 9 display LO helium-neon laser BS beam Splitter M1, M2 Mirror O Object OL Object wave RL Reference wave H Observation plane PL Reconstructed wave OI Object image

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[Procedure amendment]

[Submission date] August 4, 1999 (1999.8.4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Wherein said image calculating means, houses coordinate support system according to claim 1, characterized in that to calculate the display image data in accordance with the distance to the position for observing the house from building materials to be displayed.

5. The house coordination support system according to claim 1, further comprising direction input means for inputting a direction in which the house is observed.

6. The house coordination support system according to claim 4 , further comprising distance input means for inputting a distance for observing the house.

7. A computer-readable recording medium characterized by recording a program for causing a computer to function as a house co-ordinate support system according to any one of claims 1 to 6.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

[0017]

A house coordination support system according to the present invention includes an image memory for storing three-dimensional image data of a surface of a building material, and a building material to be displayed from a plurality of building materials for a specific curved surface area of the house. A building material selecting unit to be selected, and the three-dimensional image data of the building material selected by the building material selecting unit is read out from the image memory, and is read into a plane portion
Mapping of stereoscopic image data and surface conversion
And a display means for displaying the calculated display image data on the curved surface area of the house.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

Further, since the image memory stores hologram data of the surface of a building material, it is possible to store data in a form suitable for the characteristics of the building material. Further, since the image memory stores the Fourier transform data of the surface of the building material, the data can be efficiently stored when the image of the surface of the building material has periodicity .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

[0019] Further, the image calculation means may include a building material to be displayed.
Display image data according to the distance from the
Data is calculated, so that real-life building materials
The surface can be reproduced.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

Specifically, the following operation is performed. That is, first, prior to the above-described diffraction and interference calculations, the digital camera 1 uses FIG.
An architectural board as shown in Fig. 6 is photographed. Then, where with the acquired surface image data subjected to FFT (fast Fourier transform), and stores in the memory the result as two-dimensional texture data.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction contents]

[0038] In this manner, the information about the information and phase distribution for sky <br/> between the frequency distribution that put the building board surface portion
Are acquisition, the phase distribution data in a two-dimensional texture data previously described is applied form, the (and serves as a mapping Material) three-dimensional array texture data, i.e., so that the basic texture data is acquired ( See FIG. 3).

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction contents]

[0039] Specifically, although not could obtain front surface stereoscopic information collected, that the information has been acquired, the mapping of basic textures for the curved portion of the building, according to the curved portion shaped to be And it can be done smoothly without difficulty. The operation will be described later (see FIG. 7).

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0048

[Correction method] Change

[Correction contents]

FIG. 3 is a flowchart for explaining the operation of creating basic texture data according to the present embodiment. This operation is performed before the normal display operation. First, in step S11, surface texture data of a predetermined building board and its dimensional data (width: l, length: m) are acquired through the digital camera 1. Then, the obtained surface texture data, in step S12, that records the three-dimensional texture data file 6 running F FT. This
This becomes two-dimensional texture data. Next, in Step S1 3, performs interference calculated for F FT data, determine the position <br/> phase distribution data, recorded on the stereoscopic texture data file 6. The combined these become the basis for the three-dimensional texture data.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0052

[Correction method] Change

[Correction contents]

FIG. 7 is a flowchart for explaining the detailed operation of the basic texture data mapping (step S24) of FIG. First, in step S31, it is determined whether or not there is designation of basic texture data to be pasted.
If there is no designation, the process waits until there is a designation, and if there is a designation, the process proceeds to step S32 to sequentially read the designated basic texture data from the three-dimensional texture data file 6, and reads it in step S33. The developed space of the basic texture data is corrected in accordance with the dimensions of the modeled curved surface portion. Next, step S
34, the corrected F FT data and phase distribution data, performs three-dimensional mapping of a three-dimensional surface with respect to expansion rectangular flat portion. At this time, inverse Fourier transform is performed on the FFT data, and the depth information of the phase distribution data is added. As a result, for example, as shown in FIG. 8, a predetermined three-dimensional texture mapping is applied to the developed rectangular plane part of L × M by calculation. In step S3 5, performs image shaping process such as roll map, image shaping to determine OK or not in step S3 6, returns to step S3 5 still have an image shaping suffice NO image Continue shaping,
If the image shaping is completed with YES, the process returns to the original step S25.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0055

[Correction method] Change

[Correction contents]

[0055]

As described above, according to the present invention, a realistic three-dimensional texture is mapped on a curved surface portion of a building. Therefore, in performing a house coordination service to a user, Works extremely effectively. Furthermore, the mapping process and the surface conversion process
This means that general-purpose software can be used effectively
it can.

[Procedure amendment 11]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

[Procedure amendment 12]

[Document name to be amended] Drawing

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

FIG. 7

Claims (9)

[Claims] 1. An image memory for storing three-dimensional image data of a surface of a building material, a building material selecting means for selecting a building material to be displayed from a plurality of building materials for a specific curved surface area of a house, and a selection by the building material selecting means. Image calculation means for reading the three-dimensional image data of the building material obtained from the image memory and pasting the three-dimensional image data to the curved surface area, and displaying the calculated display image data on the curved surface area of the house And a display means for displaying the information. 2. The house coordination support system according to claim 1, wherein said image memory stores hologram data of a surface of a building material. 3. The house coordination support system according to claim 1, wherein the image memory stores Fourier transform data of a surface of a building material. 4. The house coordination support system according to claim 1, wherein the image memory separately stores the image data of the protrusions and the image data of the grooves on the surface of the building material. 5. The house coordination support system according to claim 1, wherein the image calculation means maps the three-dimensional image data on a plane part and converts the three-dimensional plane image data into a curved surface. . 6. The house coordination support system according to claim 1, wherein said image calculation means calculates display image data according to a distance from a building material to be displayed to a position at which the house is observed. 7. The house coordination support system according to claim 1, further comprising direction input means for inputting a direction of observing the house. 8. The house coordination support system according to claim 6, further comprising distance input means for inputting a distance for observing the house. 9. A computer-readable recording medium on which a program for causing a computer to function as the house coordination support system according to claim 1 is recorded.