Gradual change method of three-dimensional mesh model sequence
A grid model, three-dimensional grid technology, applied in image data processing, instruments, etc., to achieve the effect of simultaneously processing geometric information and motion information
Active Publication Date: 2015-09-02
ZHEJIANG UNIV
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This work can provide a good control structure for the sequence gradient of the grid model, but this work only establishes the skeleton-driven Cage structure, and does not involve the study of the sequence gradient of the grid model
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[0042] The present invention will be described in detail below in conjunction with specific embodiments.
[0043] In this embodiment, the topologies of the mesh models in the given source mesh sequence and the target mesh sequence are inconsistent.
[0044]A method for gradual change of a three-dimensional grid model sequence, comprising the steps of:
[0045] (1) Grid sequence preprocessing:
[0046] Constructing a source grid model sequence and a target grid model sequence respectively, constructing a skeleton-driven Cage structure of each grid model, the skeleton-driven Cage structure including a skeleton corresponding to each grid model, and a Cage attached to the skeleton; and Skeletons have section lines at the joint points.
[0047] The skeletons of all meshes in the source mesh sequence are their corresponding skeleton sequences. Similarly, the skeletons of all mesh models in the target mesh model sequence are their corresponding skeleton sequences. In this embodim...
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The invention discloses a gradual change method of a three-dimensional mesh model sequence. The method comprises the following steps that a source mesh model sequence and a target mesh model sequence are constructed respectively; a skeleton driving Cage structure of each mesh model is constructed respectively; the skeleton driving Cage structure comprises a skeleton corresponding to each mesh model and a Cage attached to the skeleton; a section line is arranged at a joint point of the skeleton; according to the section line at the joint point of the skeleton, all the skeletons carry out uniformization segmentation respectively, and a segmentation result is used to carry out cross parameterization on each mesh model in the source mesh model sequence so as to acquire a corresponding compatible mesh model; according to a relation between the source mesh model sequence and the target mesh model sequence and a compatible mesh model sequence, a reconstruction-interpolation mode is used to acquire a final dynamic gradual change mesh model sequence. By using a gradual change method in the invention, geometric interpolation and motion mixing can be simultaneously performed on the different mesh model sequences so as to obtain the new gradual change mesh model sequence. An application scope is wide.
Description
technical field [0001] The invention relates to the technical field of three-dimensional grid model sequence processing in computer graphics, in particular to a gradual change method for a three-dimensional grid model sequence. Background technique [0002] A mesh model sequence (mesh) is a group of mesh models of the same object. Each mesh model in the mesh model sequence has different motion postures, so the mesh model sequence contains motion information and geometric information. Although mesh sequences have been extensively studied and applied in the field of data-driven animation, there is currently no published work on simultaneously blending the geometry and motion of different mesh sequences (i.e., mesh sequence gradients), and only a few Research work on other processing techniques between grid model sequences. [0003] Kircher et al. (Kircher S, Garland M. Free-form motion processing. ACM Transactions on Graphics, 2008, 27(2):12:1–12:13.) developed powerful motio...
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IPC IPC(8): G06T19/20
Inventor 冯结青陈雪谢选孟
Owner ZHEJIANG UNIV