Digital Relief Generation from 3D Models  

作　　者：WANG Meili SUN Yu ZHANG Hongming QIAN Kun CHANG Jian HE Dongjian 

机构地区：[1]College of Information Engineering, Northwest A & F University [2]National Center for Computer Animation, Bournemouth University [3]College of Mechanical and Electronic Engineering, Northwest A & F University

出　　处：《Chinese Journal of Mechanical Engineering》2016年第6期1128-1133,共6页中国机械工程学报（英文版）

基　　金：Supported by National Natural Science Foundation of China(Grant Nos.61402374,41301283);National Hi-tech Research and Development Program of China(863 Program,Grant No.2013AA10230402);China Postdoctoral Science Foundation

摘　　要：It is difficult to extend image-based relief generation to high-relief generation, as the images contain insufficient height information. To generate reliefs from three-dimensional （3D） models, it is necessary to extract the height fields from the model, but this can only generate bas-reliefs. To overcome this problem, an efficient method is proposed to generate bas-reliefs and high-reliefs directly from 3D meshes. To produce relief features that are visually appropriate, the 3D meshes are first scaled. 3D unsharp masking is used to enhance the visual features in the 3D mesh, and average smoothing and Laplacian smoothing are implemented to achieve better smoothing results. A nonlinear variable scaling scheme is then employed to generate the final bas-reliefs and high-reliefs. Using the proposed method, relief models can be generated from arbitrary viewing positions with different gestures and combinations of multiple 3D models. The generated relief models can be printed by 3D printers. The proposed method provides a means of generating both high-reliefs and bas-reliefs in an efficient and effective way under the appropriate scaling factors.It is difficult to extend image-based relief generation to high-relief generation, as the images contain insufficient height information. To generate reliefs from three-dimensional （3D） models, it is necessary to extract the height fields from the model, but this can only generate bas-reliefs. To overcome this problem, an efficient method is proposed to generate bas-reliefs and high-reliefs directly from 3D meshes. To produce relief features that are visually appropriate, the 3D meshes are first scaled. 3D unsharp masking is used to enhance the visual features in the 3D mesh, and average smoothing and Laplacian smoothing are implemented to achieve better smoothing results. A nonlinear variable scaling scheme is then employed to generate the final bas-reliefs and high-reliefs. Using the proposed method, relief models can be generated from arbitrary viewing positions with different gestures and combinations of multiple 3D models. The generated relief models can be printed by 3D printers. The proposed method provides a means of generating both high-reliefs and bas-reliefs in an efficient and effective way under the appropriate scaling factors.

关 键 词：high-relief BAS-RELIEF mesh enhancement SCALING 

分 类 号：J312.2[艺术—美术]