Joshua Li

Josh Li

I'm a 4th year computer science undergrad at the University of Waterloo, interested in computer vision problems in perception and 2D/3D generation.

Currently, I work as a research assistant under Prof. Yuri Boykov. Previously, I was fortunate enough to work with Prof. Yuhao Chen and Dr. Gregory Schwartz.

More about what I do for fun here.

Email / Scholar / Github

Peggy's Cove, NS

Research

	SHARE: Scene-Human Aligned Reconstruction Joshua Li, Brendan Chharawala, Chang Shu, Xue Bin Peng, Pengcheng Xi SIGGRAPH Asia Tech. Comm., 2025 code 3D human motion and scene reconstruction from RGB videos. Improves spatial grounding by optimizing human mesh against estimated human point map.
	Design Decisions that Matter: Modality, State, and Action Horizon in Imitation Learning Brendan Chharawala, Joshua Li, Stephie Liu, Shawn Yang, Colin Bellinger, David Liu, Chang Shu, Yue Hu, Pengcheng Xi CoRL Workshop, 2025 Effect of teleoperation modality for training generalist robot policy (Octo) on a robotic arm.
	SAMJAM: Zero-Shot Video Scene Graph Generation for Egocentric Kitchen Videos Joshua Li, Fernando Jose Pena Cantu, Emily Yu, Alexander Wong, Yuchen Cui, Yuhao Chen CVPR Workshop, 2025 code / arXiv Video scene graph generation in dynamic kitchen environments. Integrates Gemini and SAM2 using a matching algorithm to ensure stable object identities.
	CellNEST reveals cell-cell relay networks using attention mechanisms on spatial transcriptomics Fatema Tuz Zohora, Deisha Paliwal, Eugenia Flores-Figueroa, Joshua Li, Tingxiao Gao, Faiyaz Notta, Gregory W. Schwartz Nature Methods, 2025 vis code / article Graph attention network with contrastive learning to detect cell-cell communication. I wrote code to visualize results.