报告题目：Studies on 3D Reconstruction
3D reconstruction is about producing faithful digital models of real-world physical objects or scenes from 2D image input. The task of 3D reconstruction is encountered in many applications, such as VR content creation, urban visualization, CAD/CAM, robotics, and autonomous driving. In the first part of this seminar, I will present an efficient pipeline for scanning and reconstructing sherds (i.e. excavated ceramic fragments at archaeological sites), which is a long-standing problem in digitization for archaeology. Existing image acquisition systems typically take several minutes to scan a single sherd, so are impractical for field studies which usually produce hundreds of sherds every day. Our system is capable of scanning and reconstruct over a thousand pieces per day. It is not only efficient but also portal, affordable, and accurate. The system has been tested in archaeological fields and demonstrated expected efficacy and robustness.
In the second part I will present a series of works on 3D reconstruction of thin structures and objects with weak textures, which are among the most challenging types of objects to reconstruct. In particular, I will introduce a neural rendering method, dubbed NeuS, for 3D reconstruction. NeuS integrates the SDF (signed distance function) representation with NeRF, a recent neural rendering method for novel view synthesis. By encoding a 3D surface as the zero-level set of a network-encoded SDF, NeuS achieves robust and high-quality reconstruction of complex objects, especially objects with complex structures, self-occlusion, and weak texture.
讲者简介：
Dr. Wenping Wang is a Professor of Computer Science at Texas A&M University. He conducts research in computer graphics, computer vision, visualization, robotics, medical image processing, and geometric modelling. He has published over 300 papers in these fields. He is associate editor of several journals, including Computer Aided Geometric Design (CAGD), Computers & Graphics (CAG), and IEEE Transactions on Visualization and Computer Graphics (TVCG), and has chaired over 20 international conferences, including Pacific Graphics 2012, ACM Symposium on Physical and Solid Modelling (SPM) 2013, SIGGRAPH Asia 2013, and Geometry Summit 2019. He received the John Gregory Memorial Award for contributions in geometric modelling. He is an IEEE Fellow and an ACM Fellow.
时间：2022年12月16日(周五) 上午10:00-11:00
腾讯会议：835276448
