I’m recruiting multiple PhD students in my group at Penn Computer and Information Science in the following areas: - Neural Representations and rendering for 3D/4D Reconstruction - 3D Generative Models - Human Motion Generation - LLM guided Graphics and Vision - Neural Representations for Robotics etc.

📢Our new NVIDIA AI paper is out! I'm happy to share Compact NGP with Learned Hash Probing, which offers NeRFs that are 3.5x smaller than Instant NGP at a ~1.26x training cost and equivalent (or faster) inference speeds! 🌐: nv-tlabs.github.io/compact-ngp/ 🎥: youtube.com/watch?v=3TEry8…

Very excited to share our work on SIGGRAPH 2024: CWF: Consolidating Weak Features in High-quality Mesh Simplification. Proj: ruixu.me/html/CWF/index… Code: github.com/Xrvitd/CWF (some star pls) Paper：arxiv.org/abs/2404.15661 YouTube：youtu.be/QpTY-cHJJRU

#SIGGRAPH2024 We present Vertex Block Descent (VBD), the NEXT simulator.: nearly zero-compromised, fast🚀🚀, massively parallel💻💻, convergent📉📉, and unconditionally stable💎💎. Project Page: ankachan.github.io/Projects/Verte… Code (coming soon): github.com/AnkaChan/Gaia

Interested in learning about differential geometry and its connection to geometric computing? All material from the Carnegie Mellon University course on #DiscreteDifferentialGeometry has been collected in a new webpage (videos, code, exercises, etc.). Check it out! geometry.cs.cmu.edu/ddg

(1/n) Happy to share that our paper, "Simplicits: Mesh-Free, Geometry-Agnostic, Elastic Simulations" will be presented at #SIGGRAPH2024 research.nvidia.com/labs/toronto-a…

Super excited to share the new Roblox Graduate Fellowship program, a 2-year fellowship for PhD students in graphics, machine learning, communications, systems, data science, and economics. The application deadline is August 15, 2024!! gem.com/lp/roblox/ec-r…

🔍Need efficient distance queries for 2D/3D meshes? Check out FCPW – a user-friendly library in C++ and Python with GPU support! 💻 Get started here: github.com/rohan-sawhney/… Also available on PyPI: pip install fcpw🐍

Signed distance functions (SDFs) are fundamental tools in graphics, vision, and physics simulation. But how do you get a high-quality SDF from messy, real-world input? At #SIGGRAPH2024, we introduced a simple method for turning "broken" geometry into a well-behaved SDF. <🧵>

Generating nice meshes in AI pipelines is hard. Our #SIGGRAPHAsia2024 paper proposes a new representation which guarantees manifold connectivity, and even supports polygonal meshes -- a big step for downstream editing and simulation. (1/N) SpaceMesh: research.nvidia.com/labs/toronto-a…

My superstar student Mark Gillespie is on the academic job market 🤩: markjgillespie.com Beyond lots of beautiful, deep, award-winning research in geometry processing, he's just a terrific person who we already miss having around. Twist his arm if you want him to apply!

📢📢📢 "𝐑𝐚𝐝𝐢𝐚𝐧𝐭 𝐅𝐨𝐚𝐦: Real-Time Differentiable Ray Tracing", a mesh-based 3D represention. radfoam.github.io arxiv.org/abs/2502.01157 Co-lead by my PhD students Shrisudhan Govindarajan and Daniel Rebain, and w/ Kwang Moo Yi

After many years of giving talks, I no longer get nervous. Instead, I'm now nervous when my students give talks! Fortunately, they do an amazing job. Here's Mark Gillespie giving an extended talk on a new *harmonic* surface representation: youtube.com/watch?v=9h13FP…

I've updated my blog post to walk through the remaining technical details of our Surface Winding Numbers algorithm: now the calculus of the algorithm is explained a bit more in detail. The post, paper, code, etc. is all here: nzfeng.github.io/research/WNoDS…

Our #Siggraph25 work found a simple, nearly one-line change that greatly eases neural field optimization for a wide variety of existing representations. “Stochastic Preconditioning for Neural Field Optimization” w/ Merlin Nimier-David Alec Jacobson Nick Sharp

Light version of Pierre Terdiman 's Zero-Byte-BVH here: skal65535.github.io/BVH/ The idea is to order the triangles as a binary tree by groups of 6 triangles, each group defines a bounding box to test. If hit, recurse both half of the remaining triangles. Corentin Wallez : WebGPU!

Logarithmic maps are incredibly useful for algorithms on surfaces--they're local 2D coordinates centered at a given source. Yousuf Soliman and I found a better way to compute log maps w/ fast short-time heat flow in "The Affine Heat Method" presented @ SGP2025 today! 🧵

Join us at the SIGGRAPH Canada Party hosted by Hsueh-Ti Derek Liu and me, on behalf of Canada Graphics Research! RSVP here: lu.ma/epm4b7xp #SIGGRAPH2025

Hooooray 🙌 Massive kudos to everyone behind it. It’s more than thrilled to see a topic so close to my heart — LOD — evolve from R&D, to prototype, and to a part of SLIM, in the hands of millions of Roblox users everyday!

📢ProcGen3D: Learning Neural Procedural Graphs for Image-to-3D Reconstruction Xinyi Zhang learns neural procedural graphs to generate high-fidelity 3D - MCTS-guided sampling maintains consistency with the input image, even from real images! Check it out: xzhang-t.github.io/project/ProcGe…