Method for directly transferring three-dimensional model attitude

A 3D model, a direct technology, applied in 3D modeling, image data processing, instruments, etc., can solve the problems that cannot be provided, the deformation target model is not vivid enough, etc.

Inactive Publication Date: 2007-11-14
INST OF AUTOMATION CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0005] Another limitation of expression cloning and morph transfer is that the source and target reference meshes must have the same motion pose, since both methods replicate the shape change caused by morphing
Furthermore, if the source morph itself lacks realism, it is clear that the morph target model generated by the source morph must also be less than realistic, and unfortunately does not provide an effective means to improve the result

Method used

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  • Method for directly transferring three-dimensional model attitude
  • Method for directly transferring three-dimensional model attitude
  • Method for directly transferring three-dimensional model attitude

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Embodiment Construction

[0028] In computer graphics, three-dimensional surfaces are represented using a global or local coordinate system. The global coordinate system explicitly specifies the global Euler coordinates of geometric data to represent a specific shape. In contrast, the local coordinate system encodes the intrinsic geometric parameters of the surface. The global coordinate system is convenient for geometric transformations, texturing, collision detection, and rendering. On the other hand, the local coordinate system is suitable for mesh editing operations that require maintaining local details of the surface.

[0029] To implement a method for directly transferring the pose of a 3D model—the model transduction method—we implement a mesh reconstruction system that incorporates both global and local features. This representation assumes that some triangles are independent and rotation-invariant rigid patches, which are defined in global coordinates. On the other hand, a series of predef...

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Abstract

This invention is a three-dimensional model of direct transfer method gesture involving computer graphics technology, the 3D model directly to the source posture passed to target three-dimensional model. First, the user specified source / target model features corresponding anchor, and then the corresponding algorithm automatically establish the source and destination of the triangular relationship; Then, the triangular surface film formation rotation and translation to a temporary mesh, the network from a reference targets Gatti Grid rigid elements, while retaining a possible source grid posture information; then the provisional grid in the face of the film in accordance with the predefined Laplace differential binding re-arranged, splicing generate meaningful three-dimensional model . This invention solution to a single three-dimensional model of transmission between posture, both the overall structure of the skeleton or fine skin deformation; help efficient 3D animation division has been rapid use of 3D model library to produce complex three-dimensional model of posture, and no need to start from scratch or repeated time-consuming manual adjustment.

Description

technical field [0001] The invention relates to the technical field of computer graphics, and relates to a method for directly transferring the pose of a three-dimensional model—model transduction, which can directly transfer the pose of a source three-dimensional model to a target three-dimensional model. Background technique [0002] Mesh deformation is widely used in both computer modeling and computer animation. 3D animators and artists use various morphing tools in 3D production software to manually edit the facial expressions and body shapes of virtual characters. Not only do these methods require a lot of artistic skill to adjust the deformation, but it is also difficult to reuse the results on new 3D models. In order to use a parameterized 3D model to control the deformation of another 3D model, specific deformation parameters must be matched to the new shape. In many cases, setting these parameters is too time-consuming to start over. [0003] Noh et al. proposed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
Inventor 吴怀宇潘春洪杨青马颂德
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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