Qiangeng (Charlie) Xu is a research scientist with 11 years of experience at the intersection of 3D vision, generative models, and neural rendering, currently at Waymo after research roles at Google AR. He holds a PhD in Computer Science from USC and has contributed to influential projects and papers such as Point-NeRF, bringing practical ML engineering skills like CUDA kernel development and COLMAP point-cloud integration to state-of-the-art neural radiance field systems. His background spans aerospace engineering to large-scale industry systems—experience that informs his work on digital humans, 3D reconstruction, and novel learning schemes like contrastive and meta-learning. Notably, he has moved research prototypes toward production-readiness, optimizing performance-critical components and adapting models across diverse datasets.
11 years of coding experience
6 years of employment as a software developer
Doctor of Philosophy - PhD Computer Science, Doctor of Philosophy - PhD Computer Science at University of Southern California
Bachelor of Engineering (B.E.) Aerospace Aeronautical and Astronautical Engineering, Bachelor of Engineering (B.E.) Aerospace Aeronautical and Astronautical Engineering at Beihang University
High School attached with Tsinghua
Master of Science (M.S.), Master of Science (M.S.) at University of Pennsylvania
Contributions:41 commits, 1 PR, 29 pushes in 9 months
Contributions summary:Qiangeng contributed to the Point-NeRF project by adding functionality related to COLMAP point cloud input, enhancing the model's ability to incorporate external point data. They also made modifications to scripts, including testing and training configurations, specifically adapting them for different datasets and model parameters. Furthermore, the user implemented CUDA kernels for efficiently querying and processing point cloud data, including calculations for ray position masking and neighbor identification. These updates indicate a focus on improving the model's performance and integration with external data sources.
Contributions:35 commits, 6 pushes, 1 branch in 17 days
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