Chengcheng Tang

About

My name is Chengcheng, and I am currently a research scientist at Meta. I received my PhD from KAUST Visual Computing Center under the supervision of Prof. Helmut Pottmann, and subsequently completed a postdoctoral fellowship at Stanford University with Prof. Leo Guibas before joining Facebook/Meta.

My research expertise spans two main areas: human understanding and embodied AI, including pose estimation, motion analysis, interaction tracking, contact inference, and LLM/VLM-based applications such as sports coaching; and geometry processing, where I have studied constrained design, shape understanding, recovery, and 2D/3D content generation with GenAI. As a tech lead, I drove the development of inside-out body tracking, now shipped on Quest 3/3S to millions of users worldwide (blog, post, reddit, uploadvr).

I received the Best Paper Award at the Symposium on Geometry Processing. My recent service includes SGP committee member (6+ years), WACV 2026 Area Chair, SIGGRAPH Asia 2025 COI Coordinator, and CVPR 2025 outstanding reviewer.

Email • Google Scholar • GitHub

Publications

HuMoCon: Concept Discovery for Human Motion Understanding

Qihang Fang, Chengcheng Tang, Bugra Tekin, Shugao Ma, Yanchao Yang

CVPR 2025

Paper

EgoMusic-driven Human Dance Motion Estimation with Skeleton Mamba

Quang Nguyen, Nhat Le, Baoru Huang, Minh Nhat Vu, Chengcheng Tang, Van Nguyen, Ngan Le, Thieu Vo, Anh Nguyen

ICCV 2025

PHD: Personalized 3D Human Body Fitting with Point Diffusion

Hsuan-I Ho, Chen Guo, Po-Chen Wu, Ivan Shugurov, Chengcheng Tang, Abhay Mittal, Sizhe An, Manuel Kaufmann, Linguang Zhang

ICCV 2025

Project • Paper • Video

Interactive Design of Developable Surfaces by Patch-based Learning

Chaoyun Wang, Jianlei Wang, Chengcheng Tang, Nanning Zheng, Caigui Jiang

Computer-Aided Design 2025

CIGTime: Corrective Instruction Generation through Inverse Motion Editing

Qihang Fang, Chengcheng Tang, Bugra Tekin, Yanchao Yang

NeurIPS 2024

Paper

EgoBody3M: Egocentric Body Tracking on a VR Headset Using a Diverse Dataset

Amy Zhao *, Chengcheng Tang *, Lezi Wang, Yijing Li, Mihika Dave, Lingling Tao, Christopher D. Twigg, Robert Y. Wang (* Equal contribution)

ECCV 2024

Paper • Code & Data

PressureVision++: Estimating Fingertip Pressure from Diverse RGB Images

Patrick Grady, Jeremy A. Collins, Chengcheng Tang, Christopher D. Twigg, Kunal Aneja, James Hays, Charles C. Kemp

WACV 2024

Project • Paper • Code • Video

MotionDeltaCNN: Sparse CNN Inference of Frame Differences in Moving Camera Videos with Spherical Buffers and Padded Convolutions

Mathias Parger, Chengcheng Tang, Thomas Neff, Christopher D. Twigg, Cem Keskin, Robert Wang, Markus Steinberger

ICCV 2023

Social Diffusion: Long-term Multiple Human Motion Anticipation

Julian Tanke, Linguang Zhang, Amy Zhao, Chengcheng Tang, Yujun Cai, Lezi Wang, Po-Chen Wu, Juergen Gall, Cem Keskin

ICCV 2023

Paper

EMDB: The Electromagnetic Database of Global 3D Human Pose and Shape in the Wild

Manuel Kaufmann, Jie Song, Chen Guo, Kaiyue Shen, Tianjian Jiang, Chengcheng Tang, Juan José Zárate, Otmar Hilliges

ICCV 2023

Project • Paper • Video • Data • Code

PressureVision: Estimating Hand Pressure from a Single RGB Image

Patrick Grady, Chengcheng Tang, Samarth Brahmbhatt, Christopher D. Twigg, Chengde Wan, James Hays, Charles C. Kemp

ECCV 2022 (Oral)

Paper • Code • Video

DeltaCNN: End-to-end CNN Inference of Sparse Frame Differences in Videos

Mathias Parger, Chengcheng Tang, Christopher D. Twigg, Cem Keskin, Robert Wang, Markus Steinberger

CVPR 2022

Paper • Code

Visual Pressure Estimation and Control for Soft Robotic Grippers

Patrick Grady, Jeremy A. Collins, Samarth Brahmbhatt, Christopher D. Twigg, Chengcheng Tang, James Hays, Charles C. Kemp

IROS 2022

Paper • Code • Video

Multiview Human Body Reconstruction from Uncalibrated Cameras

Zhixuan Yu, Linguang Zhang, Yuanlu Xu, Chengcheng Tang, Luan Tran, Cem Keskin, Hyun Soo Park

NeurIPS 2022

Paper • Talk

ContactOpt: Optimizing Contact to Improve Grasps

Patrick Grady, Chengcheng Tang, Christopher D. Twigg, Minh Vo, Samarth Brahmbhatt, Charles C. Kemp

CVPR 2021 (Oral)

Project • Paper • Code • Video

EM-Pose: 3D Human Pose Estimation from Sparse Electromagnetic Trackers

Manuel Kaufmann, Yi Zhao, Chengcheng Tang, Lingling Tao, Christopher Twigg, Jie Song, Robert Wang, Otmar Hilliges

ICCV 2021

Project • Paper • Video • Data • Code

UNOC: Understanding Occlusion for Embodied Presence in Virtual Reality

Mathias Parger, Chengcheng Tang, Yuanlu Xu, Christopher D. Twigg, Lingling Tao, Yijing Li, Robert Wang, Markus Steinberger

IEEE TVCG 2021

Paper • Data

Computational Design of Lightweight Trusses

Caigui Jiang, Chengcheng Tang, Hans-Peter Seidel, Renjie Chen, Peter Wonka

Computer-Aided Design 2021

Paper

ContactPose: A Dataset of Grasps with Object Contact and Hand Pose

Samarth Brahmbhatt, Chengcheng Tang, Christopher D. Twigg, Charles C. Kemp, James Hays

ECCV 2020

DeepSpline: Data-driven Reconstruction of Parametric Curves and Surfaces

Jun Gao, Chengcheng Tang, Vignesh Ganapathi-Subramanian, Jiahui Huang, Hao Su, Leonidas J. Guibas

arXiv preprint 2019

arXiv

Isotropic Surface Remeshing Without Large and Small Angles

Yiqun Wang, Dong-Ming Yan, Xiaohan Liu, Chengcheng Tang, Jianwei Guo, Xiaopeng Zhang, Peter Wonka

IEEE TVCG 2018

Paper

A Unified Discrete Framework for Intrinsic and Extrinsic Dirac Operators for Geometry Processing

Zi Ye, Olga Diamanti, Chengcheng Tang, Leonidas Guibas, Tim Hoffmann

Computer Graphics Forum (SGP) 2018

Parsing Geometry Using Structure-aware Shape Templates

Vignesh Ganapathi-Subramanian, Olga Diamanti, Soeren Pirk, Chengcheng Tang, Matthias Niessner, Leonidas Guibas

3DV 2018

DeepPrimitive: Image Decomposition by Layered Primitive Detection

Jiahui Huang, Jun Gao, Vignesh Ganapathi-Subramanian, Hao Su, Yin Liu, Chengcheng Tang, Leonidas J. Guibas

Computational Visual Media 2018

Paper

Folding Cartons: Interactive Manipulation of Cartons from 2D Layouts

Shuang Shan, Yiting Ma, Chengcheng Tang, Xuejin Chen

Computer Aided Geometric Design 2018

Design and Volume Optimization of Space Structures

Caigui Jiang, Chengcheng Tang, Hans-Peter Seidel, Peter Wonka

ACM TOG (SIGGRAPH) 2017

Interactive Design of Developable Surfaces

Chengcheng Tang, Pengbo Bo, Johannes Wallner, Helmut Pottmann

ACM TOG 2016

Paper • DOI

Analysis and Design of Curved Support Structures

Chengcheng Tang, Martin Kilian, Pengbo Bo, Johannes Wallner, Helmut Pottmann

Advances in Architectural Geometry 2016

Paper • DOI

Polyhedral Patterns

Caigui Jiang, Chengcheng Tang, Amir Vaxman, Peter Wonka, Helmut Pottmann

ACM TOG (SIGGRAPH Asia) 2015

Form-finding with Polyhedral Meshes Made Simple

Chengcheng Tang, Xiang Sun, Alexandra Gomes, Johannes Wallner, Helmut Pottmann

ACM TOG (SIGGRAPH) 2014

Paper • DOI

Interactive Modeling of Architectural Freeform Structures: Combining Geometry with Fabrication and Statics

Caigui Jiang, Chengcheng Tang, Marko Tomičić, Johannes Wallner, Helmut Pottmann

Advances in Architectural Geometry 2014

Paper • DOI

Intuitive Design Exploration of Constrained Meshes

Xin Zhao, Chengcheng Tang, Yongliang Yang, Helmut Pottmann, Niloy J. Mitra

Advances in Architectural Geometry 2012