KR100813296B1 - Method to make and display two dimentional avatars in real-time three dimentional graphic systems - Google Patents

Abstract

As a method of creating and effectively displaying a movable two-dimensional avatar in three-dimensional real-time graphics,

Produce the 2D avatar by dividing it into the basic parts when moving the 2D avatar, and create the 2D avatar with each basic part specifying the movement, and convert the divided part and the movement of each part into a 3D avatar on the computer. Integrating and displaying the integrated three-dimensional avatar in three-dimensional real-time graphics

Characterized in that it comprises a.

The present invention can be applied to three-dimensional computer games, three-dimensional online computer games, three-dimensional video games and the like.

2D avatar, 2D avatar compositing, integrated virtual screen, image integration

Description

Method to make and display two dimentional avatars in real-time three dimentional graphic systems}

1 is a flow chart of a method for producing a two-dimensional avatar for three-dimensional graphics.

2 is a diagram illustrating separation by two-dimensional avatar parts.

3 illustrates a method of arranging separated two-dimensional avatars in three-dimensional space.

4 illustrates a method of displaying the motion of a two-dimensional avatar.

5 is a flowchart of a method of displaying a two-dimensional avatar in real-time three-dimensional graphics.

<Explanation of symbols for each part of the drawing>

1: Initial design of 2D avatar

2: Separate design of 2D avatar

3: hair in separate design of 2D avatar

4: Face part in separate design of 2D avatar

5: array of two-dimensional avatars in three-dimensional space

6: Arrangement of hair in three-dimensional space

7: placement of face parts in three-dimensional space

8: Image showing two-dimensional avatars arranged in parallel in three-dimensional space

9: Front view of the arranged two-dimensional avatar

10, 11, 12: Images generated by moving each part of the 2D avatar

The present invention relates to a method for producing and effectively displaying a movable two-dimensional avatar in real-time three-dimensional graphics. Applications include avatar creation and display of video games and computer games.

In a game, an avatar is an important element that acts as an alter ego of a user who uses the game. This avatar must be capable of a variety of designs and must be capable of various movements.

The existing game used the following two methods for the avatar function.

In the case of a game using two-dimensional graphics, a two-dimensional avatar was designed and an image was produced for each movement step for each movement. In this case, there are many images that need to be produced each time the motion is added, which requires a lot of time and money to produce each image. For one second of motion, you need to produce 15 images at 15 frames per second. In addition, there is a problem that all images must be re-created when the movement is changed.

In the case of a game using three-dimensional graphics, the avatar is designed using a combination of three-dimensional polygons, and each motion is represented by a combination of three-dimensional polygons. However, designing fine avatars combined with three-dimensional polygons requires considerable effort and skill in the designer's work.

In addition, if a detailed avatar is made of three-dimensional polygons, a high-performance computer is required to display in real time.

It is an object of the present invention to alleviate the above drawbacks. The theme is to create a two-dimensional avatar that can be displayed in real-time three-dimensional, it is possible to easily add a variety of movements after designing the avatar, and devise a method to effectively display in a real-time three-dimensional system. This way,

After dividing the two-dimensional avatar into basic parts, each basic part specifies a movement to produce the two-dimensional avatar movement;

Integrating the divided parts and the movement of each part into a single image on a computer;

Displaying the image of the integrated avatar in three-dimensional real-time graphics

Characterized in that it comprises a.

Since the movement of the 2D avatar can be represented as the movement in the 3D space of each basic part, various movements can be easily added as compared to the existing 2D avatar production method, and the design of the 2D avatar is used, thereby real-time 3D It is possible to express detailed avatars within.

The present invention comprises a process of creating a 2D avatar that can be used in 3D real time graphics, and a process of applying the created 2D avatar to 3D real time graphics and displaying the same.

This method basically uses the created 2D avatar to obtain a smoothly moving avatar in 3D real-time graphics. In addition, each part of the 2D avatar can be easily exchanged to generate a new avatar in real time.

The present invention basically divides the created two-dimensional avatar by parts, and then moves by each part in the three-dimensional real-time graphics to express the movement. In order to increase the speed of processing the moving secondary avatar for each part, a two-dimensional avatar synthesis step is included.

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

1 illustrates a process of manufacturing a 2D avatar for use in 3D real-time graphics.

In step 1 of FIG. 1, the avatar designer creates a single two-dimensional avatar using a two-dimensional design tool.

In step 2 of FIG. 1, the design of the first sheet manufactured in step 1 is divided into parts, and then modified to be used as parts. The image indicated by reference numeral 1 of FIG. 2 is an image designed by the designer in step 1 of FIG. 1. The picture indicated by the reference numeral 2 is an image obtained by dividing the picture indicated by the reference numeral 1 into respective parts. When separating parts, additional modifications must be made to move the parts apart. The picture indicated by the reference numeral 3 and the picture indicated by the reference numeral 4 are combined to form the face portion of the avatar. The upper part of the image indicated by the reference number 3 is a part which has been further modified so that the separating part can move.

In step 3 of FIG. 1, three-dimensional polygons corresponding to each image separated in step 2 of FIG. 1 are manufactured and arranged. This part is described as an important part through the example of FIG. 3.

After the three-dimensional polygons are manufactured to the same size as each part indicated by reference numeral 2 of FIG. 2, the polygons are arranged in parallel to match the post-relationship of each part indicated by reference numeral 2. The image indicated by reference number 4 is a face, so it must be located later than the hair part indicated by reference number 3. Therefore, reference numeral 6 of FIG. 3 corresponding to reference numeral 3 is located after reference numeral 7 corresponding to reference numeral 4. FIG. Polygons arranged in a relationship after drawing are arranged in parallel with each other. Reference numeral 8 is an image of the arrangement of reference numeral 7 viewed from the side, and it can be seen that the polygons are arranged in parallel with each other.

The image of the reference number 9 is seen from the front of the arrangement of the reference number 7, and when viewed from the front of the array of polygons, all are combined to form an avatar. Since the two-dimensional avatar is displayed only in one direction, it is sufficient to be displayed effectively when viewed from the front direction.

In step 4 of FIG. 1, the motion of the avatar is generated by assigning a motion to the arrangement of the polygons created in step 3. Each polygon can be rotated, moved, flipped, reduced, enlarged, and transformed. By specifying the motion of each polygon, motions up to 12, 14 and 16 in FIG. 4 are generated.

Using polygonal transformations, you can easily express complex movements such as the arm's bend and the leg's bend. The bending of the leg from reference numeral 11 to reference numeral 13 in FIG. 4 represents the movement of the leg using a deformation of the polygon. In the conventional two-dimensional avatar production step, such a deformation had to be made by humans in many stages of the image. However, when the polygon deformation is used, an intermediate step is automatically generated when the start shape and the end shape of the polygon are designated.

Various avatar animations can be created only by specifying the rotation, movement, flipping, reduction, enlargement, and transformation of polygons. Therefore, in the existing method of generating two-dimensional animations, the design as shown in FIG. Compared with this, avatar animation can be created quickly. The motion of the polygons in the process of step 4 can be easily generated using existing three-dimensional tools.

As an additional operation in step 4 of FIG. 1, more various avatar animations may be generated by using image replacement and polygon display setting. The deformation of the face from reference numeral 10 to reference numeral 15 in FIG. 4 represents the replacement of the displayed image of the polygon, and generates a motion by replacing the image representing the front face of the face and the image representing the side face of the face. It was.

By using the replacement of the image displayed on the polygon and setting the visibility of the polygon, most movements including rotation of the front, side, and back of the avatar can be displayed.

In step 5 of FIG. 1, the polygons created in step 3, the image of each part created in step 2, and the motions of the polygons created in step 4 are combined to be converted into a form that can be used in real-time three-dimensional graphics.

When displaying a two-dimensional avatar that can be used in the three-dimensional graphics produced as shown in Figure 3 using the existing method as it is, it includes a performance problem when displaying in real time. As shown by reference numeral 5 of FIG. 3, the 2D avatar manufactured to be used in 3D graphics is composed of a plurality of separated polygons. When the separated polygons are displayed on the screen in real time 3D graphics, each separated polygon is recognized as a separate object and displayed on the screen. Therefore, a command to display the separated polygons on the screen should be given. As a result, when there are several moving parts of the avatar, the number of commands to be displayed on the screen to be given to the real-time three-dimensional graphics hardware increases, thereby reducing the performance of displaying on the screen.

The procedure of FIG. 5 is devised to solve performance problems when using a 2D avatar in 3D graphics.

The procedure of FIG. 5 is based on the properties of a two-dimensional avatar that can be used in three-dimensional graphics. As can be seen from reference numeral 8 of FIG. 3, each polygon constituting the two-dimensional avatar forms a plane parallel to each other in the three-dimensional space. When the 2D avatar is displayed in 3D graphics, the 2D avatar is displayed on the assumption that the camera is positioned at a right angle to the plane of the polygon constituting the 2D avatar. The procedure of FIG. 5 describes a method of integrating a two-dimensional avatar into one screen using these two characteristics.

In step 1 of FIG. 5, a virtual screen for integrating a two-dimensional avatar is generated. The virtual screen is the same size as the final image of the integrated two-dimensional avatar, and after all the steps of FIG. 5, the virtual screen includes the final image of the integrated two-dimensional avatar.

In step 2 of FIG. 5, each polygon constituting the 2D avatar is displayed on the virtual screen generated in step 1. Each polygon constituting the two-dimensional avatar is displayed on the virtual screen in order from the rearmost polygon to the frontmost polygon in order in consideration of the latter. When the polygon is displayed on the virtual screen, the polygon is displayed by overwriting the previously drawn screen.

In step 3 of FIG. 5, a three-dimensional polygon is generated in the three-dimensional graphic that matches the final size of the two-dimensional avatar, and the image in the virtual screen created in step 2 is displayed on the three-dimensional polygon.

In the case of displaying the two-dimensional avatar by the procedure of FIG. 5, one three-dimensional polygon in the three-dimensional graphics may be displayed for one two-dimensional avatar, and thus a single command may be displayed on the real-time three-dimensional graphics hardware. . In the process of FIG. 5, the integrated display on the virtual screen performed in step 2 may be displayed as a conventional two-dimensional graphic based on the characteristics of the two-dimensional avatar. .

According to the present invention, various avatars can be quickly produced in a 3D game, and the screen can be effectively displayed even at a low calculation cost. It is possible to develop a game that has both the advantages of a 2D avatar and a 3D game.

Claims (5)

In the method of expressing the motion of the two-dimensional avatar image a) dividing the avatar image into a plurality of partial images b) generating each partial image as a three-dimensional polygon such that the plurality of partial images are displayed on at least one surface; c) arranging the three-dimensional polygons such that one surface on which the partial image is displayed is parallel to each other; d) displaying a two-dimensional avatar image in which the partial image is integrated by performing at least one of the rotation, movement, flipping, reduction, enlargement, and transformation of the arranged three-dimensional polygons. Motion representation method of a two-dimensional avatar image comprising a. The method of claim 1, The step d) further performs replacement of the image displayed on the three-dimensional polygon. The method according to claim 1 or 2, And displaying the two-dimensional avatar image in which the partial image is integrated in one three-dimensional polygon. delete delete

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