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Method for adopting rough drawings to establish three-dimensional human face molds

A 3D face and sketch technology, applied in the field of sketch creation of 3D face model, can solve the problem of face type and cannot fully reflect the designer's drawing effect, so as to improve the naturalness and freedom, and meet the requirements of real-time. , the effect of high operability

Inactive Publication Date: 2010-10-06
NANJING UNIV
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Problems solved by technology

Obviously, the types of faces that can be generated by these two methods depend on the size of the predefined template library, and cannot fully reflect the rendering effect of the designer

Method used

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  • Method for adopting rough drawings to establish three-dimensional human face molds
  • Method for adopting rough drawings to establish three-dimensional human face molds
  • Method for adopting rough drawings to establish three-dimensional human face molds

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Embodiment Construction

[0032] The invention discloses a method for creating a three-dimensional face model using sketches, which includes the following steps:

[0033] Step 1: Sketch face recognition: preprocess the sketch face to be processed, and recognize the sketch face contour according to the spatial distribution rules of facial organs, that is, establish the corresponding relationship between each stroke of the sketch face and the sketch face contour ;

[0034] Step two, 3D face feature extraction: Import 3D face mesh model (the 3D face mesh model can be generated by software such as Maya, 3DMax, etc.) as a template model of the 3D face, respectively from the 3D face mesh model Extract the inner contour of the 3D face and the outer contour of the 3D face;

[0035] Step 3: Contour matching: Extract the 2D shape feature point set from the sketch face contour, and extract the corresponding 3D shape feature point set from the 3D face contour. According to each 2D shape feature point relative to the ske...

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Abstract

The invention discloses a method for adopting hand drawing rough drawings to establish three-dimensional human face molds, which comprises the following steps: carrying out pretreatment on rough drawing human faces to be treated; recognizing the rough drawing human face outlines according to the space distribution rules of face organs of the human faces; establishing the corresponding relationship of the rough drawing human face strokes and the rough drawing human face outlines; respectively extracting the three-dimensional human face inner outlines and the three-dimensional human face outer outlines from three-dimensional human face lattice models used as templates according to the Gaussian curvature algorithm and the three-dimensional observation rules; extracting two-dimensional shape feature point sets from the rough drawing human face outlines; extracting corresponding three-dimensional shape feature point sets from the three-dimensional human face outlines; calculating the displacement vector of each point in the three-dimensional shape feature point sets according to the normalized distance between each two-dimensional shape feature point and the center of the rough drawing human face; and generating the three-dimensional human face models similar to the rough drawing human faces through the deformation of the three-dimensional human face lattice models according to the displacement vector of the three-dimensional shape feature point sets and each feature point. The invention supports the establishment of new three-dimensional human face models by using the existing three-dimensional human face model in a human face outline hand drawing mode.

Description

Technical field [0001] The invention patent relates to a graphics analysis and interpretation software method, which belongs to the technical field of computer software and computer graphics. Specifically, it is a process of using sketch recognition, shape feature extraction, shape mapping and model deformation to create a three-dimensional human Face model method. Background technique [0002] Since the literature 1 Parke F, Computer generated animation of faces, In: Proc. ACM National Conference, 1972: 451-457, the creation of three-dimensional face modeling and animation research, such as literature 2 Xu Chenghua, Wang Yunhong, Tan Tieniu, three-dimensional face Modeling and Application, Chinese Journal of Image and Graphics, 2004, 9(8): 893-903 and literature 3Deng Z, Noh JY, Computer facial animation: A survey, Data-Driven 3D Facial Animations, Springer, 2007: 1-28 The large number of research and application results of 3D face modeling. However, most of the existing three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06K9/00G06K9/46
Inventor 孙正兴蒋维宋沫飞张尧烨
Owner NANJING UNIV
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