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Clothing cartoon computation method

A clothing and clothing model technology, applied in the field of rapid calculation of clothing animation, can solve the problem of inability to achieve a good balance between animation calculation efficiency and effect, and achieve the effect of improving calculation stability, high calculation efficiency and fast speed

Inactive Publication Date: 2008-03-12
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Claims
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Problems solved by technology

[0007] Therefore, the purpose of the present invention is to overcome the defect that the existing clothing animation calculation method cannot achieve a good balance between the efficiency and effect of animation calculation, thereby providing a method for performing area division when the human body model is moving, and realizing fast calculation of clothing animation

Method used

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Embodiment Construction

[0036] The method of the present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0037]In the present invention, a human body model and a clothing model are involved, and the related concepts of the two models will be described first below. Figure 2 is an example of a human body model whose surface is composed of polygonal meshes. The storage and representation of the human body model in the computer is to record a series of vertices and a series of faces. For example, a vertex record "33: 0.10, 0.05, 0.07" indicates that the three-dimensional coordinates of the 33rd vertex are (0.10, 0.05, 0.07); a patch record "35: 2, 25, 67" indicates the 35th vertex A polygonal patch is a triangle formed by the 2nd, 25th, and 67th vertices. Figure 3 is an example of a clothing model. The clothing model is usually composed of polygonal meshes. Its storage and representation in the computer is similar to that of the human body model....

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Abstract

The invention provides a cloth animation algorithm, which comprises a pretreatment and an animation algorithm. The pretreatment wherein comprises: drive a human-body model by use of data stream in human motion and calculate the current present culmination position of each culmination on a cloth model by using sport data fragments of human; according to the result, present an algorithm for collision detection and response between an active human-body model and a cloth model and record the collision information. In addition, the pretreatment also offers region division for the cloth model which consists of cling region and loose region and binds the cling region on the human-body joints to get a binding value between the culminations of clothes and the joints. The animation algorithm comprises: drive human-body model by use of motion data frames; in the course of moving, adopt a geometrical algorithm to calculate the position of clothes culminations in cling region, and adopt a physical algorithm to calculate the position of clothes culminations in loose region. The invention has the advantages of both high efficiency in geometrical algorithm and verisimilitude in physical algorithm, by which a vivid cloth animation is formed rapidly.

Description

technical field [0001] The invention relates to the field of computer graphics, in particular to fast calculation of clothing animation. Background technique [0002] Clothing animation is one of the hotspots and difficulties in the field of computer graphics. Fast, realistic clothing animation can bring a strong sense of visual realism to 3D virtual characters. Samurai in games, clowns in animation, virtual hosts on TV and websites, all virtual characters are eager to wear dynamic and elegant virtual clothes. And fashion designers can use this technology to see the three-dimensional dynamic effect of the model after wearing it in the clothing design stage, thereby improving design efficiency and reducing design costs. [0003] The clothing animation calculation is to calculate the position of the clothing model at each moment according to the human body movement, and the clothing animation calculation is a necessary stage in the clothing animation generation process. Aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/70G06T13/00
Inventor 毛天露夏时洪王兆其
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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