JP2003085588A - Method of modeling 3d geometry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a 2D image of a human body taken in a photograph into a 3D image even if there is not a photograph taken in three directions of a front face, a side face, and a back face but if there is a photograph taken from the front face. SOLUTION: When a section (10s) orthogonal to a bone (10x) of 3D standard geometrical data (8) of the human body is formed into an arbitrary shape and the profile line (10E) of the 3D standard geometrical data (10) is deformed so as to meet the profile line of 2D image data (21), each of the cross widths of the respective sections (10s) is specified based on a coordinate value of the profile line (10E). The respective sections (10s) are similarly deformed based on the cross width to develop the 2D image data (21) such as a photograph taken from the front face into 3D image data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional shape modeling method for capturing a two-dimensional image of a human body drawn by a photograph or a drawing into a computer and making it three-dimensional by using a three-dimensional CAD or a graphics function. Regarding

[0002]

2. Description of the Related Art Conventionally, a three-dimensional shape for transforming a two-dimensional image into a three-dimensional shape by transforming preset three-dimensional standard shape data of the human body based on a two-dimensional image of the human body taken by a photograph or the like. Modeling methods are known.

This is to prepare photographs of the same subject taken from the front, side, and back, and first take each of them into the computer as two-dimensional image data. Next, after scaling the contours seen from the front, the contours seen from the side, and the contours seen from the back of the preset three-dimensional standard shape data of the human body to match the extension of the respective two-dimensional images, By deforming each contour of the original standard shape data so as to overlap the respective two-dimensional image data, the three-dimensional standard shape data is deformed based on the two-dimensional image data captured from the front, side, and back.

Finally, the two-dimensional image data obtained by attaching the two-dimensional image data obtained from the front and the back to the front and the back of the thus obtained three-dimensional shape data is used to make the two-dimensional image three-dimensional. .

[0005]

However, in general, it is almost impossible to take a picture of the same subject from the three directions of front, side, and back, and in many cases, there is only a picture from the front. Because of the large number, even if an attempt is made to make a two-dimensional image three-dimensional, it is impossible with the above method.

Further, in the conventional three-dimensional shape modeling method, since the clothing is treated as a pattern formed on the surface of the body, there is no problem in expressing the clothing closely attached to the body such as a T-shirt or slim pants. However, if you wear three-dimensional clothing such as a skirt or bell-bottomed trousers, there is a problem that the hem becomes an unnatural shape like a haniwa or clay figurine.

That is, when a two-dimensional image of a human body wearing a skirt is made into three-dimensional, two-dimensional images of the same subject viewed from the front, side and back are prepared, and from the front, side and back of the three-dimensional shape data. The contour lines that have been seen are superimposed and displayed, and the contour lines are deformed so as to match the contours of each two-dimensional image.

At this time, since the computer determines that the contour shape is the body shape, the computer treats it as if the waist portion of the body shape extends into the skirt shape of the skirt.

Moreover, since the three-dimensional shape data is originally composed of a polygon mesh and the skirt and the foot exposed from the hem are treated as a continuous solid, the three-dimensional shape obtained by the above-described shape modeling processing. The data is, as shown in FIG. 9A, the skirt 61a of the skirt 61.
The boundary between the toe 62 and the foot 62 is continuous by the tapered surface 63, resulting in an unnatural shape such as a haniwa or clay figurine, and it does not look like wearing a skirt.

Similarly, when a two-dimensional image of a human body wearing bell-bottom type pants with a wide hem is made into a three-dimensional image, it is treated as if the foot is bulging into the hem type of the pants, and the processing is performed as shown in FIG. As shown in (b), the hem 64a of the pants 64
The boundary between the toe 65 and the foot 65 is continuous by the tapered surface 66, which is an unnatural shape, and does not look like wearing pants very much.

Further, with regard to the hair, it is difficult to express the hair having a voluminous feeling that flutters in the wind only by expressing the surface of the skin head as black with paint or magic. In other words, such as the front opening of clothing such as shirts and jackets, the cut part of the bangs,
When matching the edge of the three-dimensional curved surface with the edge of the two-dimensional image data, conventionally, the hair data 71 set in advance as shown in FIG. 10 (a) is shown in FIG. 10 (b). As described above, the cutting line 72 is set in accordance with the two-dimensional image data to cut out an unnecessary portion, and a three-dimensional curved surface is reconfigured with polygons formed by a combination of triangles or squares as shown in FIG. Was there. However, in this case, depending on the shape of the cutting line 72, the polygons forming the hair data 71 are triangular or quadrangular components 73 ...
It has been divided into several parts, and such fine components 73 ...
It becomes a three-dimensional shape with poor quality and difficult to handle.

Therefore, according to the present invention, firstly, even if there is no photograph of the front, side, and back in three directions, a two-dimensional image of the human body shown in the photograph can be three-dimensionalized as long as there is a photograph from the front. Second, the second is trousers,
Even parts such as skirts that are difficult to express can be naturally three-dimensional as if you are wearing pants or skirts, and the volume of hair that flutters in the wind is also three-dimensional. It is a technical issue that it can be realized.

[0013]

In order to solve this problem, the invention of claim 1 is the human body as seen from the same direction as the contour line of the preset three-dimensional standard shape data of the human body. A two-dimensional image is obtained by deforming the contour of the two-dimensional image data so that the three-dimensional shape data is generated based on the coordinate data of the contour line, and then pasting the image of the two-dimensional image data on the surface. In the three-dimensional shape modeling method of three-dimensional, each cross section orthogonal to the bone of the three-dimensional standard shape data is formed into an arbitrary shape, each body part is formed to be bendable and expandable around a joint, Match the contour lines of the 3D standard shape data to the contours of the 2D image data by combining movement operations, scaling operations, bending and stretching operations, and contour deformation operations of the 3D standard shape data as necessary. Deformed so that, characterized in that to similarity transformation of each cross section of the three-dimensional standard shape data based on the coordinate data of the outline.

According to the first aspect of the present invention, the cross section orthogonal to the bone of the three-dimensional standard shape data of the human body is formed in an arbitrary shape, and the movement, expansion, contraction, bending and contour deformation of the three-dimensional standard shape data are performed. The contour lines of the three-dimensional standard shape data are transformed so as to match the contours of the two-dimensional image data by combining them as necessary. As a result, the lateral width of each cross section is specified, and if each of the similarly deformed cross sections is made continuous based on the lateral width, the two-dimensional image data such as a photograph taken from the front is three-dimensionalized as it is.

According to a second aspect of the present invention, at least a part of the three-dimensional standard shape data is set such that main shape data representing the body shape and associated shape data representing the shape of clothes, hairstyle or the like covering the body shape are overlapped. The contour line of the main shape data is transformed so as to match the contour of the body part of the 2D image data, and the contour line of the incidental shape data is transformed so as to match the contour of the clothes and hair of the 2D image data. , The respective cross sections of the main shape data and the auxiliary shape data are similarly deformed based on the coordinate data of each contour line.

According to the second aspect of the present invention, if the contour line of the main shape data representing the body shape is transformed so as to match the contour of the body part, the main shape data of the main shape data is calculated based on the coordinate data of the contour line. If each cross-section is deformed similarly and the contour line of the accompanying shape data representing the shape of clothing or hairstyle is deformed so as to match the contour of clothing or hair of the two-dimensional image data,
Based on the coordinate data of the contour line, each cross section of the accompanying shape data is similarly transformed.

Therefore, a three-dimensional human body image in which the body shape represented by the main shape data is put on the clothing represented by the associated shape data and the hairstyle represented by the associated shape data is arranged As is the case with the prior art, the boundary between the skirt and the foot exposed from the hem of the skirt is not unnaturally connected by the tapered surface, and even when viewed from the front,
Even when viewed from diagonally below, it is accurately expressed that the legs are extending from the inside of the hem.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a hardware configuration of a computer used in the present invention, FIG. 2 is a conceptual diagram showing three-dimensional standard shape data, FIG. 3 is a flowchart showing a processing procedure, and FIG. 4 is an explanatory diagram showing a method of the present invention. ，
5 is an explanatory view showing the obtained three-dimensional shape data, FIG. 6 is an explanatory view showing a processing procedure of an edge moving operation, FIG. 7 is an explanatory view showing an edge moving operation of clothing data, and FIG. 8 is hair data. It is explanatory drawing which shows the edge moving operation.

The computer 1 three-dimensionalizes two-dimensional image data such as a front photograph of a person wearing a skirt. The computer 1 stores in advance three-dimensional standard shape data of a human body wearing a skirt, and its contour. The line is transformed so as to match the contour of the two-dimensional image data, and the image of the two-dimensional image data is pasted on the surface of the three-dimensional shape data generated based on the coordinate data of the contour line.

The computer 1 includes a personal computer body 4 having a CPU 2 and a memory 3, an input device 5 such as a mouse 5A and a keyboard 5B, and an image input device 6 such as a scanner 6A, a disk drive 6B and an external storage device 6C. , Display 7 is connected.

Then, in a predetermined storage area of the memory 3,
The three-dimensional standard shape data 8 of the human body wearing the skirt is stored, and the shape modeling program 9 is installed.

The three-dimensional standard shape data 8 is body shape data (main shape data) 10 representing a body shape, clothing shape data (accompanying shape data) 11 representing a skirt, and hair shape data (accompanying shape data) representing a hairstyle. ) 12 and. In the body shape data 10, a cross section 10s orthogonal to a bone (frame line) 10x passing through substantially the center of a polygon mesh 10P representing the surface shape is formed to have an arbitrary cross section, and a head 10A, a body 10B, and both arms 10C. ,
Body parts such as 10C, both feet 10D, and 10D are formed so as to be able to bend and stretch around a joint 10H set on the bone 10x.

The clothing shape data 11 is set so as to overlap the lower half of the body shape data 10, and the cross section 11s orthogonal to the bone 11x of the polygon mesh 11P representing the surface shape is formed in an arbitrary cross section shape. . Further, the hair data 12 is set so as to overlap with the hair portion of the body shape data 10, and the cross section 12s orthogonal to the bone 12x of the polygon mesh 12P representing the surface shape is formed with an arbitrary cross section shape.

Then, for example, as shown in FIG. 2, if necessary, from one of the three-dimensional standard shape data 8, the polygon meshes 10P, 11P of the body shape data 10, the clothing shape data 11 and the hair shape data 12 are generated. 12P
And bones 10x, 11x and 1 of the body shape data 10
2x and the contour lines 10E to 12E when the polygon meshes 10P, 11P and 12P are viewed from the front can be arbitrarily extracted and displayed on the display 7.

The bone 10x is used to change the posture of the body shape data 10 of the three-dimensional standard shape data 8 according to the two-dimensional image data, and the contour lines 10E to 12E.
Is used to match the widths of the body shape data 10, the clothing shape data 11, and the hair shape data with the two-dimensional image data. Further, the clothing shape data 11 is set in advance according to the type of clothing such as trousers, jackets, and kimonos as well as skirts, and the hair shape data 12 is also preset according to the hairstyle, and is optional as required. The clothing shape data 11 and the hair shape data 12 may be selected.

FIG. 3 is a flow chart showing the processing procedure of the shape modeling program 9. When the shape modeling program 9 is started, first, in step STP1, the two-dimensional image data to be three-dimensionalized is read out,
Display on the display 7. As this two-dimensional image data, any image such as a photograph or a painting captured by a digital camera, downloaded via the Internet, or read by the scanner 6A can be used.

If a photograph of a woman wearing a skirt is used as the two-dimensional image data, step STP2
Then, the three-dimensional standard shape data 8 of the human body wearing the skirt is read out and displayed on the display 7 so as to be superimposed on the two-dimensional image data.

Next, in step STP3, the skirt clothing shape data 11 is selected from the plurality of clothing shape data.
Then, the head hair shape data 12 of the hairstyle closest to the hairstyle of the two-dimensional image data is selected, the three-dimensional standard shape data 8 is selected, and this is deformed according to the two-dimensional image data. For this deforming operation, for example, a moving operation, a scaling operation, a bending / expanding operation, a contour deforming operation, and an edge moving operation can be performed using the mouse 5A, and these operations are combined and deformed as necessary.

The moving operation is an operation for moving the three-dimensional standard shape data 8 in parallel in the vertical and horizontal directions in the plane of the screen of the display 7 without deforming it so as to match the position with the two-dimensional image data. Further, the expansion / contraction operation is an operation of enlarging / reducing the three-dimensional standard shape data 8 to match the heights, and the bending / extending operation moves the bones 10x of each body part around the joints 10H in the plane of the display 7 screen. By rotating and bending the body shape of the 3D standard shape data 8,
This is an operation for matching the three-dimensional standard shape data 8 with the posture of the two-dimensional image data. The contour transformation operation is performed by the contour lines 10E to 1 displayed as the ridge lines of the three-dimensional curved surface such as the body shape data 10, the clothing shape data 11, and the hair shape data 12.
This is an operation for freely deforming 2E in the plane of the screen of the display 7 to match the contour of the two-dimensional image data. The edge moving operation is performed on the edge opening 11F of the three-dimensional curved surface represented by the clothing data 11 and the hair shape data 12, such as the front opening of the clothes such as shirts and jackets that are opened by opening the left and right front parts, and the cut portion of the bangs. This is an operation of matching the portion of 12F with the edge of the two-dimensional image data. For example, in the skirt clothing shape data 11 shown in FIG. 4, the contour lines 11E appearing as left and right ridge lines determine the silhouette shape of the skirt, and the hem edges 11F determine the skirt length and hem shape.

Further, the contour line 10E of the body shape data 10
Of these, the legs and head hidden in the skirt and hair may be deformed so as to be smoothly continuous with the legs and neck exposed from the skirt and hair.

Then, in step STP4, it is determined whether or not the deforming operation is completed. This determination is made, for example, by clicking a predetermined button on the toolbar displayed on the display 7 with the mouse 5A, and when clicked, the process proceeds to step STP5.

At step STP5, based on the coordinate data of the contour lines 10E to 12E set at step STP4,
Bone 1 of body shape data 10 and clothing shape data 11
Each cross section orthogonal to 0x, 11x, 12x is deformed similarly while maintaining its shape, and then the edges 11F, 12F
Calculation processing for moving the vertexes (operation points) CP _n of the polygons forming the associated shape data 11 and 12 in accordance with the moving amount of the three-dimensional shape by continuing the obtained cross sections in step STP6. Generate data.

Finally, in step STP7, the image of the two-dimensional image data is pasted on the front side of the three-dimensional shape data. In addition, body shape data 10 and clothing shape data 1
On the back side of 1, the image trimmed to the appropriate size from the corresponding portion of the two-dimensional image data is pasted in succession, and on the back side of the 12-hair image data, the same color as the front hair of the two-dimensional image data is attached. You can paste the hair image of.

Next, the three-dimensional shape modeling method according to the present invention will be described with reference to FIG. First, when a photograph of a human body wearing a skirt is to be three-dimensionalized, the photograph is read by the scanner 6A or the like, the two-dimensional image data 21 is displayed on the display 7, and the two-dimensional image data 21 is overlaid. The three-dimensional standard shape data 8 of the human body wearing the skirt is read out and displayed on the display 7 (FIG. 4 (a)).

Then, the three-dimensional standard shape data 8 is moved,
The contour line 10 of the body shape data 10, the clothing shape data 11 and the hair shape data 12 is subjected to scaling, bending and stretching, and contour deformation.
Freely deform E to 12E to match the contour of the two-dimensional image data 21 (FIG. 4 (b)).

At this time, in the clothing shape data 11,
The contour line 11E extending from the waist portion to the hem, which appears as the left and right ridgelines, determines the silhouette shape of the skirt, and the end edges 11F of the hem determine the length and hem shape of the skirt.

Further, the contour line 10E of the body shape data 10
Of these, the part hidden by the skirt 22 may be deformed so as to be smoothly continuous with the part of the foot 23 exposed from the skirt 22.

Then, when the contour lines 10E to 12E are matched with the contours of the two-dimensional image data, the contour line 1
Body shape data 1 based on coordinate data of 0E to 12E
0, each cross section of the clothing shape data 11 and the hair shape data 12 orthogonal to the bones 10x to 12x is similarly deformed while maintaining its shape, and then based on the coordinate data of the vertex CP _n on the edges 11F and 12F. Arithmetic processing is performed to sequentially move the adjacent vertices CP _{n + 1} .

The lateral width of each cross section is specified by the coordinate data of the contour lines 10E to 12E, and based on this, each cross section is deformed similarly while maintaining the aspect ratio. Therefore, the cross sectional shape according to the photograph taken from the front is obtained. Is calculated and three-dimensional shape data is generated based on the calculation processing, the two-dimensional image data is three-dimensionalized.

Since the body shape data 10 is also set in the portion covered by the skirt 22, the foot 23 is represented as a separate solid body which is not continuous at the hem 22a of the skirt 22, which is different from the conventional case. In addition, the boundary between the skirt and the leg extending from the hem of the skirt is not unnaturally connected by the taper surface, and as shown in FIG. , Skirt 22 hem 22a
The state in which the foot 23 extends from the inside of is accurately represented.

In the above description, the clothing shape data 1
Although the case where the shape data of the skirt 22 is set as 1 has been described, the present invention is not limited to this and may be pants or a jacket. For example, if the shape data of the pants 24 is set, FIG. As shown, it is possible to accurately represent how the foot 25 extends from the inside of the hem 24a of the pants 24. Of course, the accompanying shape data is the clothing data 11 that represents clothing such as skirts and pants.
Not limited to the hair shape data 12 representing the hairstyle, any data may be applied as long as it is the shape data representing an item to be worn such as various hats, glasses, and accessories.

Clothes data 1 to be associated shape data
When transforming 1 or hair shape data 12, three-dimensional represented by clothing data 11 and hair shape data 12, such as the front opening part of the clothes such as shirts and jackets that are opened by opening the left and right front parts, and the cut part of the bangs Curved edge 11F,
The 12F portion is deformed as follows.

That is, as shown in FIGS. 6A to 6C, one or more vertices CP _n of the edge 11F (12F) of the three-dimensional curved surface is set to the edge 11 of the clothing or hair of the two-dimensional image data 21.
Is moved to match the G (12G), Yuku sequentially moving the vertex CP n _{+ 1} adjacent thereto on the basis of the coordinate data of the mobile vertex CP _n.

In this operation, first, as shown in FIG. 6A, after drawing a new edge 11G (12G) representing the edge position after the movement of the three-dimensional curved surface to be moved, FIG.
As shown in (b), the vertex CP ₀ on the edge 11F (12F) before the movement is moved to a new edge 11G (12G). In this case, for example, the vertex CP ₀ is moved parallel to the plane of the two-dimensional image data 21 in a plane orthogonal to the bone 11x of the clothing data 11 or the moving distance to the new edge 11G (12G) is the shortest. So as to be parallel to the plane of the two-dimensional image data 21, and the vertex CP ₀ moved in this way is perpendicular to the plane of the two-dimensional image data 21 as necessary and the three-dimensional curved surface before deformation You may move to a position. Also, bone 11
It may be moved along the line of intersection between the plane orthogonal to x and the three-dimensional curved surface represented by the clothing data 11. Further, in the case of hair, each vertex CP ₀ may be moved along the radiation connecting the reference point (not shown) set near the nose and the vertex CP ₀ of the hair shape data 12.

When the process of moving the vertex CP ₀ is completed, the process shown in FIG.
As shown in (c), the vertex CP _n (n =
1 to 4) are sequentially moved. Moving distance d of each vertex CP _n
n is represented by the following equation, for example, when the moving distance of the vertex CP ₀ is d ₀ . d _n = α _n · d _n−1 (0 ≦ α _n <1) Note that α _n can be set arbitrarily, and whether it is a constant or a function of n, the vertex CP ₀ and It may be a function that is inversely proportional to the distance between two points of P _n , and the value of n can be set freely. The following values were used in this example. α _n = (5-n) / (6-n) where n = 1 to 4

Further, as shown in FIG. 6 (d), when the constituent element of the polygon is a triangle and the two vertices CP _n and DP _n of the moving distances d _n and h _n are adjacent to one vertex CP _{n + 1.} , Its moving distance d _{n + 1} is expressed by the following equation, for example. d _{n + 1} = 0.5 × α _n (d _n + h _n ).

Specifically, when the front opening portion of the jacket is deformed, the edge 11F representing the front opening portion of the clothing data 11 set in advance as shown in FIG.
Two-dimensional image data (not shown) as shown in FIG.
When a new edge 11G is set to move in accordance with, the vertices of the clothing data 11 are moved to form a smooth three-dimensional shape as shown in FIG. 7 (c).

Further, in order to move the edge 12F of the front hair part of the preset hair data 12 as shown in FIG. 8A, the two-dimensional image data (not shown) as shown in FIG. 8B is used. If you set a new edge 12G according to
The polygon is not divided into fine triangular or quadrangular component elements 73, and each vertex of the hair data 12 is moved to form a smooth three-dimensional shape as shown in FIG. 8C.

[0049]

As described above, according to the present invention, if there is a photograph from the front even if there are no photographs of the front, side and back in three directions, a two-dimensional image of the person shown in the photograph can be obtained. It can be three-dimensionalized, and even the clothes you are wearing,
Since it is possible to accurately express even the hair, it is an excellent effect that it is possible to generate an extremely natural image even when the line of sight is moved in detail, such as legs hidden in the hem of pants or skirts and hair with a sense of volume. Play.

[Brief description of drawings]

FIG. 1 is a hardware configuration diagram of a computer used in the present invention.

FIG. 2 is a conceptual diagram showing three-dimensional standard shape data.

FIG. 3 is a flowchart showing a processing procedure.

FIG. 4 is an explanatory view showing the method of the present invention.

FIG. 5 is an explanatory diagram showing three-dimensional shape data according to the method of the present invention.

FIG. 6 is an explanatory diagram showing a processing procedure of an edge moving operation.

FIG. 7 is an explanatory diagram showing an edge moving operation of clothing data.

FIG. 8 is an explanatory diagram showing an operation of moving the edge of the hair data.

FIG. 9 is an explanatory diagram showing three-dimensional shape data according to a conventional method.

FIG. 10 is an explanatory diagram showing a modified image of associated shape data according to a conventional method.

[Explanation of symbols]

1 ... Computer 8 ... 3D standard shape data 10 ... Body shape data (main shape data) 10s ... section 10H ... joint 11 ………… Clothing shape data (accompanying shape data) 12 --- Head hair shape data (accompanying shape data) 10x, 11X, 12x ... Bone 10E, 11E, 12E ... contour lines 21 ... Two-dimensional image data 22 ......... skirt 23 ...... foot

Claims (4)

[Claims] 1. A contour line (10E) of preset three-dimensional standard shape data (8) of a human body is made to match the contour of two-dimensional image data (21) of the human body viewed from the same direction. To generate three-dimensional shape data based on the coordinate data of the contour line (10E), and then paste the image of the two-dimensional image data (21) on the surface to make the two-dimensional image three-dimensional. In the three-dimensional shape modeling method described above, each cross-section (10s) orthogonal to the bone (10x) of the three-dimensional standard shape data (8) is formed into an arbitrary shape, and each body part has a joint (10H). It is formed so that it can be bent and stretched in the center, and the movement operation of 3D standard shape data (8), the expansion / contraction operation, the bending and stretching operation, and the contour deformation operation are combined as necessary,
The contour line (10E) of the three-dimensional standard shape data (8) is transformed so as to match the contour of the two-dimensional image data (21),
A three-dimensional shape modeling method characterized in that each cross section (10s) of the three-dimensional standard shape data (8) is similarly deformed based on the coordinate data of the contour line (10E). 2. Main shape data (10) representing a body shape in at least part of the three-dimensional standard shape data (8).
And ancillary shape data (11, 12) representing the shape of clothing, hairstyle, etc. covering the body shape are set so as to overlap each other, and the contour line (10E) of the main shape data (10) of the two-dimensional image data (21) is set. Transform to match the contour of the body part,
Contour lines (11E, 12) of the accompanying shape data (11, 12)
E) is transformed so as to match the contours of the clothing and the hair of the two-dimensional image data (21), and the main shape data (10) and the associated shape data (11) based on the coordinate data of each contour line (10E to 12E). , 12) each of the cross sections (10s to 12s) is deformed in a similar manner. 3. The three-dimensional shape modeling method according to claim 2, wherein a plurality of incidental shape data (11, 12) corresponding to types of clothes and hairstyles are set to be selectable. 4. The edges (11F, 12F) of the three-dimensional curved surface represented by the accompanying shape data (11, 12) are moved so as to match the edges of the clothing and hair of the two-dimensional image data (21). The three-dimensional shape modeling method according to claim 1, wherein the vertices (CPn) of the polygons forming the accompanying shape data (11, 12) are moved according to the amount of movement of the moved edges (11F, 12F).