Courses/Computer Vision

Computer Vision

CSE471

Prof. Makarand Tapaswi + Prof. Charu Sharma•Spring 2025-26•4 credits

Revision Notes/Unit 5 — NeRF & 3D Gaussian Splatting

Unit 5 — NeRF & 3D Gaussian Splatting

From implicit volumetric rendering (NeRF) to explicit-primitive splatting (3DGS): per-scene optimisation, differentiable rasterisation, spherical harmonics for view-dependence, and adaptive density control.

NeRF & 3DGS — Per-Scene Optimisation and Differentiable Rendering

16 min

NeRF encodes a scene as a neural network — query (x, y, z, view) and get density + colour. 3DGS keeps the rendering equation but replaces the neural query with a sorted bag of explicit 3D Gaussians, getting real-time rendering at NeRF-comparable quality.