NVlabs/instant-ngp

Implements four neural graphics primitives (NeRF, SDFs, neural images, and neural volumes) using multiresolution hash encoding with MLPs trained via the tiny-cuda-nn framework on NVIDIA GPUs. The architecture achieves sub-second to sub-minute training times through GPU-accelerated neural network inference and custom CUDA kernels. Includes an interactive GUI with real-time rendering, VR support, mesh conversion, camera optimization, and cross-dataset compatibility with standard NeRF formats.

17,310 stars.