KR100500896B1 - Method for automatically generating intelligent digital actor or extras based on digital continuity - Google Patents

Abstract

An intelligent digital actor and extra automatic generation method based on the digital conti according to the present invention includes: a digital conti processing step of receiving a digital conti, inputting the same, and converting it into a motion code; A motion database search and extraction step of searching for and extracting the nearest motion from a predetermined motion database based on the motion code converted in the step; Extracts environmental information parameters, applies behavioral parameters of digital actors and extras, transforms the extracted motions to avoid collisions of the digital actors and extras, and retrieves the motion database again for the transformed motions A motion modification step of searching for a close reference motion and modifying the motion using the reference motion or joint parameters according to the result; And a motion application step of applying the motion determined in the motion transformation step to the digital actors and extras and displaying the result.

Description

Intelligent digital actor and extra automatic generation method based on digital contiguity {METHOD FOR AUTOMATICALLY GENERATING INTELLIGENT DIGITAL ACTOR OR EXTRAS BASED ON DIGITAL CONTINUITY}

The present invention relates to an intelligent method for generating digital actors and extras. More specifically, the present invention utilizes a motion database based on digital contiguity, which is higher than the editing and transformation techniques generally used for generating motions of three-dimensional digital actors. The present invention relates to a method for automatically generating intelligent digital actors and extras for giving natural and intelligent motion to digital actors or extras. In particular, the present invention relates to intelligent digital actors and extra automatic generation methods that can transform various motions using motion parameters.

With the development of computer graphics technology, various character animation technologies are being developed in the field of digital contents such as avatars such as avatars, 3D animation, and special effects of movies. The present invention relates to motion generation of digital actors and extras, which are intelligent characters with the same reactions and behaviors as humans.

As a technique related to the motion generation of such a virtual character, Korean Patent Application Publication No. 2002-15234 (published: February 27, 2002) discloses a "real-time motion conversion method of a virtual character", the prior patent It relates to a technique for controlling virtual characters of different sizes in real time.

In addition, Korean Patent Application Publication No. 2001-57880 (published: July 5, 2001) discloses a "walking motion deformation animation method", and the preceding patent relates to a walking motion generated using motion capture. The present invention relates to a technique for transforming motion data using factors such as gait period, circulation, leg length, direction change, and stride length.

Korean Patent Application Publication No. 2002-57447 (published: July 11, 2002) discloses a method for producing a 3D animation film using direct adjustment of a 3D character. The present invention relates to a technology for extracting outlines using characters and automatically connecting them in a two-dimensional image to generate necessary frames in the middle.

Korean Patent Application Publication No. 2001-25161 (published: April 6, 2001) discloses an "Avatar Maker Implementing Method capable of Emotional Processing", and the preceding patent is a virtual character based on a natural language input by a user. Relates to techniques for controlling facial expression and mouth shape.

Korean Patent Application Publication No. 2000-26404 (published: May 15, 2000) discloses a "real-time control system of a virtual reality character", the preceding patent is a virtual character without using an expensive motion capture system The present invention relates to a technique of generating a character's movement through mapping with an input device at a low level in order to be able to control in real time.

Korean Patent Application Publication No. 2002-22885 (published: March 28, 2002) discloses a "virtual character generation system and method and a virtual character service method", the prior patent photographs the shape and motion of the user The present invention relates to a technique for synthesizing a form of a virtual character by a moving image obtained by the same, and for synthesizing an agent program such that the virtual character has multifunctionality in an online and offline computer environment.

Conventional motion generation patents, as described above, focus primarily on methods of modifying or controlling motion in real time for a single character. Such a technique corresponds to a subordinate technique of the present invention, and the use of such simple transformation and editing techniques has limitations in producing digital contents. In other words, the technology that the user operates directly or controls through a simple input device to control the digital actor may provide some convenience in producing digital content, but it is not much different from the existing keyframe method. can do. In addition, there are not only a single digital actor in the digital content, but many virtual characters such as digital extras may appear. However, the research on the control techniques for the digital extras is still insufficient. Accordingly, higher levels of interface and control techniques are required to provide natural and intelligent movement to digital actors and extras used in three-dimensional digital content.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described technical problem, and utilizes a motion database based on a digital input input by a user to automatically generate intelligent digital actors and extras for giving natural and intelligent motion to digital actors or extras. Its purpose is to provide a method.

In order to achieve the above object, a digital conti based intelligent digital actor and extra automatic generation method according to the present invention,

(a) a digital continuous processing step of receiving a digital continuous and interpreting it and converting it into a motion code;

(b) a motion database search and extraction step of searching for and extracting the nearest motion from a predetermined motion database based on the motion code converted in the step (a);

(c) extract environmental information parameters, apply behavioral parameters of digital actors and extras, modify the extracted motion to avoid collisions of the digital actors and extras, and search the motion database again for the modifications A motion modification step of searching for a reference motion close to the completed motion and modifying the motion using the reference motion or joint parameter according to the result; And

(d) applying a motion determined in step (c) to the digital actors and extras and displaying the result.

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

1 is a flowchart illustrating a process of automatically generating a digital actor and an extra method according to an embodiment of the present invention, and FIG. 2 illustrates an example of a motion parameter used in the motion transformation step in the flowchart of FIG. 1. An example of collision avoidance between actors in a digital actor and an extra automatic generation method according to an embodiment of the present invention is shown.

In order to control digital actors and extras in an embodiment of the present invention, a digital context must first be defined. The digital conti is a kind of script, and is similar to the script seen by real actors, and can be referred to as a set of instructions on actions, emotions, etc. which digital actors should take.

The digital continuous input step S1 of FIG. 1 is a process of receiving the digital continuous input described above. The input of the digital conti may be input line by line through a script window, or a conti containing a scene may be input in a file format.

Next, the digital continuous analysis step S2 is performed. In the step S2, the digital contiguity is interpreted, and more specifically, a category such as which category the input motion belongs to, information about the size and emotion of the motion, and the final action target are interpreted. The contiguously interpreted as described above is converted into a motion code, which is a language understood by the device, in the motion code generation step S3. Here, the motion code may be understood as an action function for designating an action, and contains information on which action is to be represented in what way.

When the step S3 is completed, a step S4 of searching for and extracting the closest motion from the motion database through the generated motion code is performed. The extracted motion may be a single motion or a series of motions in which several motions are mixed. Which motion is generated depends on how much information is included in the motion code. When the motions are mixed, it searches for and extracts the most naturally transitionable motions and automatically interpolates the connected parts. This part uses a motion data processing pipeline method that facilitates motion data processing through content-based motion search and motion relationship search within the motion database. The motion data processing pipeline method is a motion database management technique that can efficiently store and retrieve motion.

Since the motion searched and extracted in the step S4 is not yet applied to the environment information or the behavioral pattern, the motion is extracted based on the environment information, the behavioral style and the collision avoidance control by the motion modification step S5 of FIG. 1. An action is needed to deform the motion. At this time, the motion deformation step (S5) is the result of the application of the step (S6) of extracting environmental information (S6), applying the behavior pattern (S7) and avoiding the collision between actors based on the behavior pattern (S8) Perform the motion transformation with reference to. Three parameters as shown in FIG. 2 are used for this motion transformation, that is, a behavior pattern parameter, an environment information parameter, and a joint information parameter. Referring to FIG. 2, the behavior pattern parameter includes a speed, a preference, a body feature, a state, and the like. The environmental information parameter includes an obstacle, a height of a terrain, and the joint information parameter, such as a joint rotation angle, an angular velocity, Direction of travel, and the like. Each of these parameters is referenced directly or indirectly to the various motion generation in the motion modification step S5.

In the step of extracting and applying the environmental information (S6), the environmental information is extracted in order to control the operation to change the environment or avoid the obstacle in accordance with environmental information such as the height of the obstacle, the terrain. The applying of the behavior pattern (S7) is a step of defining and applying the characteristics of the digital actors and extras, and defining the characteristics of the digital actors and the extras using behavioral parameters such as speed, preference, body characteristics, current state, and the like. And apply. Even if the same action is applied to the digital actor, the use of this behavior parameter enables various motion modifications in step S5, and is particularly useful for generating digital extras. Step S8 is a step of controlling to avoid collisions between digital actors. In the conventional way, digital actors avoided collision by moving left and right, focusing only on no collision, but in real human society, when a collision occurs in a random path, if one person avoids first, It is common to proceed in a direction not to deviate from the path. Thus, using this characteristic, a collision avoidance technique is applied to step S8 above. 3 shows an example of collision avoidance according to this method of the present invention. In avoiding collisions, motion parameters such as joint information parameters, behavioral parameters, and environmental information parameters are used to determine which characters to avoid first or both at the same time. Return to the path. Since these methods are consistent with the normal rules of real human society, they can produce very natural behavior.

In the step S5, the motion is modified by referring to the result of applying the motion parameter as described above. At this time, the motion database is searched again to determine whether there is a close motion or a motion to be referred to. This step is represented as a reapplication step S10 in FIG. 1. If there is a motion to be referred to, the motion is modified by using the reference motion. Otherwise, the motion is transformed by using the joint information parameter. The motion database stores motion data, and since the motion data is a motion extracted directly from a human being, it has the advantage of being most similar to a human motion. Thus, motion deformation using a reference motion or motion deformation using a joint parameter based on the motion data is based on the motion data. It is also the most natural.

When the motion transformation step S5 is completed, the determined motion is applied to the digital actors and extras and the result is displayed on the screen (S9). In addition, when it is determined that the movement of the digital actor or the extra is necessary as a result of the display to the user in the step S9, it may be configured to be individually modified. In this way, the user can check the generated result, and if the motion of the digital actors and extras needs to be modified, the interface can be individually modified to enable active participation of the user.

As described above, according to the method for automatically generating digital digital actors and extras based on the digital conti of the present invention, the user can easily control the digital actors and extras using the digital conti, and the path and the operation may be controlled by using motion parameters. It is automatically transformed according to the environment and characteristics, and similar motions can be applied with a small number of motions. If a variety of motions are obtained from the motion database, it can automatically provide various motions to digital actors and extras. By presenting the 3D digital contents, the digital actors and extras appearing in the 3D digital content can be generated more easily and quickly to improve the convenience and productivity of the content production.

What has been described above is just one embodiment for implementing the digital conti based intelligent digital actor and extra automatic generation method according to the present invention, the present invention is not limited to the above embodiment, the scope of the claims Without departing from the gist of the invention claimed in the present invention, anyone of ordinary skill in the art to which the technical spirit of the present invention extends to the extent that various modifications can be made.

1 is a flow chart showing the processing flow of the digital actor and extra automatic generation method according to an embodiment of the present invention.

FIG. 2 shows an example of motion parameters used in the motion transforming step in the flowchart of FIG. 1.

3 illustrates an example of collision avoidance between actors in a method for automatically generating digital actors and extras according to an embodiment of the present invention.

Claims (5)

(a) a digital continuous processing step of receiving a digital continuous and interpreting it and converting it into a motion code; (b) a motion database search and extraction step of searching for and extracting the nearest motion from a predetermined motion database based on the motion code converted in the step (a); (c) extract environmental information parameters, apply behavioral parameters of digital actors and extras, modify the extracted motion to avoid collisions of the digital actors and extras, and search the motion database again for the modifications A motion modification step of searching for a reference motion close to the completed motion and modifying the motion using the reference motion or joint parameter according to the result; And (d) applying a motion determined in step (c) to the digital actors and extras and displaying the results; Intelligent digital actor and extra automatic generation method based on digital conti. The method of claim 1, In the step (c), the environmental information parameter represents an obstacle on the digital console, the height of the terrain, and the behavior parameter represents the speed, preference, body characteristics and current state of the digital actor and extra, and the joint information parameter. Represents the rotation angle, angular velocity, and direction of movement of the joint. Intelligent digital actor and extra automatic generation method based on digital conti. The method of claim 1, The Digital Conti is a set of instructions for actions and emotions that digital actors should take Intelligent digital actor and extra automatic generation method based on digital conti. The method of claim 1, In the step (c), in the case of collision avoidance, the character of the digital actor and the extra is determined first, or both at the same time, by using the environment information parameter, behavior pattern parameter, and joint information parameter, and collision is avoided. After avoiding, control to return to the original path Intelligent digital actor and extra automatic generation method based on digital conti. The method of claim 1, Providing an interface through which the user can correct movement of the digital actor or extra after displaying in step (d). Intelligent digital actor and extra automatic generation method based on digital conti.