Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (10): 137-143.doi: 10.13475/j.fzxb.20200100107

• Apparel Engineering • Previous Articles     Next Articles

NURBS surface model of digital mannequin based on B/S architecture

LIU Yun, XIU Yi()   

  1. Computer Information Center, Beijing Institute of Fashion Technology, Beijing 100029, China
  • Received:2020-01-02 Revised:2020-07-12 Online:2020-10-15 Published:2020-10-27
  • Contact: XIU Yi E-mail:xiuyiks@126.com

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Abstract:

Aiming at slow web loading and model distortion caused by the excessive size of data in the Web/server(B/S) architecture, a parametric NURBS surface model based on the B/S architecture was developed. The feature information of the point model was manually extracted by using a 3-D scanning tool to obtain its feature semantic structure and reduce the amount of model data, and then a B/S architecture was built to transfer the data from the server to the client through the JSON tree structure. Angle-weighted average, similar triangles and other methods were used to achieve parametric deformation of the mannequin. According to the principle of NURBS surface, the high-density points were employed to supplement the control points in the deformation area to construct a smooth human platform deformation surface. This method reduces human body data to form a simplified set of data to facilitate smooth data loading for creating a high-quality NURBS surface based on the B/S architecture.

Key words: Web3D technology, 3-D platform deformation, 3-D scanning measurement, NURBS surface, feature point mark of mannequin

CLC Number: 

  • TP391.72

Tab.1

Girth line and feature point definition"

围度 围度定义 特征点 特征点定义
胸上
围		 又名腋窝水平线通过腋窝点的水平线 胸上围前中心点 前中线与胸上围线的交点
胸上围后中心点 后中线与胸上围线的交点
胸上围体侧点 侧缝线与胸上围线的交点
胸围 通过乳点的水平线 胸高点 胸围线上最凸出的点
胸围前中心点 前中线与胸围线的交点
胸围后中心点 后中线与胸围线的交点
胸围体侧点 侧缝线与胸围线的交点
胸下
围		 又名乳下围,乳房下缘的水平线 胸下围前中心点 前中线与胸下线的交点
胸下围后中心点 后中线与胸下线的交点
胸下围体侧点 侧缝线与胸下线的交点

Fig.1

Feature point mark and feature line of mannequin. (a) Feature point information of front mesh; (b) Feature line information of front mesh"

Fig.2

Semantic addition process"

Fig.3

Body model B/S architecture"

Fig.4

Analysis on internal structure of JSON data"

Fig.5

Bust width line deformation map"

Fig.6

Deformation map of associated peripheral line in bust area"

Fig.7

Deformation map of triangle face mannequin in bust area. (a) Bust width line 88 cm; (b) Bust width line 94 cm; (c) Bust width line 100 cm"

Fig.8

Lattice of front mesh. (a) Lattice of upper bust area; (b) Lattice of bust area; (c) Lattice of lower bust area"

Fig.9

Normalized front mesh. (a)Normalization of the upper bust area; (b) Normalization of the chest area"

Fig.10

NURBS curved surface of front human model"

Fig.11

NURBS surface deformed human model. (a) Bust width line 88 cm; (b) Bust width line 94 cm; (c) Bust width line 100 cm"

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