Two-dimensional cartoon character deformation method

A technology for cartoons and characters, which is applied in graphics and image conversion, image data processing, instruments, etc., and can solve problems such as distortion, low efficiency, etc.

Inactive Publication Date: 2010-08-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In summary, these methods still have various problems such as low efficiency, deformation and distortion.

Method used

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  • Two-dimensional cartoon character deformation method
  • Two-dimensional cartoon character deformation method
  • Two-dimensional cartoon character deformation method

Examples

Experimental program
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Embodiment

[0102] (1) Input the meshed two-dimensional cartoon character triangular facet set. In this embodiment, the classical Chinese two-dimensional cartoon character Sun Wukong is selected as an example. figure 1 As shown, the expression is {m 1 , m 2 ,...,m n}, where the variable m i Be the i-th triangular patch in the patch collection, n is the number of patches in the collection, and in this embodiment n is 106; each patch m i by three points {v 0 , v 1 , v 2} form the three vertices of its triangle, v i Indicates the two-dimensional coordinates corresponding to point i;

[0103] For each patch m i The set of vertices {v 0 , v 1 , v 2}, the corresponding set of vertices in the transition patch is {v 0 ’, v 1 ’, v 2 '}. Through weight combination {w x ,w y} to simplify the representation of the triangle, and obtain v in the original patch 2 The representation of

[0104] v 2 = v 0 +...

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Abstract

The invention discloses a two-dimensional cartoon character deformation method comprising the following steps of: (1) firstly inputting the triangular patch set of a girdding two-dimensional cartoon character and acquiring a transitional patch set with minimum total difference by zooming according to a target coordinate of a driving point; (2) based on the transitional patch set of the step (1), corresponding the triangular patches of original patches and the transitional patch set one to one and obtaining an adapted patch set with minimum patch difference by rotating and translating; and (3) based on the adapted patch set of the step (2), obtaining a target patch set with minimum total difference by carrying out three-side non-equivalent zooming. With an operation process of segmenting the patch deformation process into three-stage second order closure, the invention improves the accuracy and the efficiency of deforming the two-dimensional cartoon character, avoids the low efficiency and inaccuracy of the traditional method and realizes the precision and efficiency requirements for deforming the two-dimensional cartoon character in the generation process of human body character animation.

Description

technical field [0001] The invention relates to the comprehensive field of computer animation and computer graphics, in particular to a two-dimensional cartoon character deformation method. Background technique [0002] With the extensive application of computer animation and computer graphics in the fields of industry and entertainment, the deformation method of two-dimensional cartoon characters based on triangular meshes has become an important research hotspot. Although the current research on this technology is still in its infancy, there are already many effective methods. [0003] The current two-dimensional deformation methods are mainly divided into two categories: one is obtained by deforming the nested space of the target shape; the other is deformation taking the structure of the shape into consideration. The paper "Free-form Deformations with Lattices of Arbitrary Topology" published at the conference SIGGRAPH in 1996 and the paper "Pose Space Deformations: A U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00G06T3/40
Inventor 肖俊梁璋庄越挺
Owner ZHEJIANG UNIV
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