Jun Wang
Professor
Alma Mater:南京航空航天大学
Education Level:南京航空航天大学
Degree:Doctoral Degree in Engineering
School/Department:College of Mechanical and Electrical Engineering
Discipline:Computer Applications Technology
Business Address:A15-509
Contact Information:Email:wjun@nuaa.edu.cn 或 junwang@outlook.com 网站:http://www.3dgp.net/
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Affiliation of Author(s):机电学院
Journal:COMPUTER GRAPHICS FORUM
Key Words:BOUNDARY EVALUATION ALGORITHMS SHAPE CONSTRAINTS CONVERSION
Abstract:The Constructive Solid Geometry (CSG) tree, encoding the generative process of an object by a recursive compositional structure of bounded primitives, constitutes an important structural representation of 3D objects. Therefore, automatically recovering such a compositional structure from the raw point cloud of an object represents a high-level reverse engineering problem, finding applications from structure and functionality analysis to creative redesign. We propose an effective method to construct CSG models and trees directly over raw point clouds. Specifically, a large number of hypothetical bounded primitive candidates are first extracted from raw scans, followed by a carefully designed pruning strategy. We then choose to approximate the target CSG model by the combination of a subset of these candidates with corresponding Boolean operations using a binary optimization technique, from which the corresponding CSG tree can be derived. Our method attempts to consider the minimal description length concept in the point cloud analysis setting, where the objective function is designed to minimize the construction error and complexity simultaneously. We demonstrate the effectiveness and robustness of our method with extensive experiments on real scan data with various complexities and styles.
ISSN No.:0167-7055
Translation or Not:no
Date of Publication:2018-08-01
Co-author:wuqiaoyun,Xu, K.
Correspondence Author:Jun Wang
汪俊,1981年生。南京航空航天大学教授,博士生导师。2007年毕业于南京航空航天大学,获博士学位。2008年至2010年,分别在美国加州大学、美国威斯康星大学从事博士后研究工作;2010年至2013年,在全球著名测量系统公司-徕卡公司(美国硅谷)担任算法研发组长,主持超大规模激光雷达测量数据处理与分析等研发工作;2013年收到菲尔兹奖得主、哈佛大学丘成桐教授邀请,赴哈佛大学开展学术访问与研究合作。2013年10月加入南京航空航天大学,2013年受聘为第四批江苏特聘教授,2014年入选江苏省“双创计划(创新类)”人才,2015年入选“国家重大人才工程A类青年项目”,2019年获得江苏省杰出青年基金项目资助。