Virtual haircut interpolation and tweening animation producing method

A technology of interpolation and hairstyle, applied in the field of hair modeling and editing of virtual characters, can solve the problems of not being able to maintain the visual naturalness and physical rationality of hairstyles, and not considering the special characteristics of human hairstyles, etc., to achieve fast hairstyle interpolation, enhance the sense of reality, The effect of guaranteeing authenticity

Active Publication Date: 2013-05-08
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But their result is a general image editing method that does not take into account the special characteristics of human hairstyles themselves, and often fails to maintain the visual naturalness and physical plausibility of hairstyles

Method used

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  • Virtual haircut interpolation and tweening animation producing method
  • Virtual haircut interpolation and tweening animation producing method
  • Virtual haircut interpolation and tweening animation producing method

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Embodiment

[0057] The inventor has realized an implementation example of the present invention on a machine equipped with an Intel Xeon E5620 central processing unit and an NVidia GTX680 graphics processor. The inventors obtained all experimental results shown in the accompanying drawings using all parameter values ​​listed in the detailed description. All input hairstyle models include about 200,000 to 400,000 hairline curves, each individual hairline is represented as a line segment connected by multiple vertices, and the pre-computation time for hairstyle interpolation is about 30 seconds (to establish hairline correspondence) , interactive hairstyle interpolation can achieve real-time speed. During the resulting rendering process these strands are expanded into screen-aligned polygon strips by the geometry shader for real-time rendering.

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Abstract

The invention discloses a virtual haircut interpolation and tweening animation producing method. The method includes a first step of inputting and pre-processing haircut model data, a second step of obtaining many-to-many hair corresponding relationshipsamong multiple haircut models and corresponding weights by inputting haircut model hair quality transmission problem, a third step of obtaining hair cluster and representative hair from top to bottom by clustering the input haircut model and constructing hierarchical structure, and a fourth step of obtaining a new haircut model result after interpolation by expanding the binary haircut tweening to multiple input haircut models and ensuring high efficiency. The method is applied to a virtual haircut geometry object which is constructed by taking a three-dimensional hairline curve as a basic unit and widely applied in the industry, the method can conduct the interpolation on a plurality of different input haircut objects so as to combine a new haircut at the middle moment, and can be applied to aspects such as auxiliary design combination of virtual role haircuts and production of tweening role animation in the fields such as digital media.

Description

technical field [0001] The invention relates to a virtual character modeling and image editing method in the field of digital media, in particular to a virtual character hairstyle modeling and editing method. Background technique [0002] The relevant technical background of the present invention is briefly described as follows: [0003] 1. Hairstyle modeling of virtual characters [0004] Although there are already many softwares in the industry that can assist creators to complete manual virtual hairstyle modeling work, they are often extremely complicated and time-consuming, requiring skilled skills and complicated manual operations, which will greatly extend the creative cycle of the product and cost overhead (WARD, K., BERTAILS, F., KIM, T.-Y., MARSCHNER, S.R., CANI, M.-P., AND LIN, M.C. 2007. Asurvey on hair modeling: styling, simulation, and rendering. IEEE Transactions on Visualization and Computer Graphics 13, 2, 213–234.). So on this basis, some existing methods...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T13/20G06T19/00
Inventor 王律迪周昆翁彦琳
Owner ZHEJIANG UNIV
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