NeRF (Neural Radiance Fields) is a technique that represents 3D scenes using neural networks.
NeRF uses a continuous volumetric scene representation to generate high-quality views of the scene.
The key operation in NeRF is volume rendering, which calculates the color of a pixel by integrating over all points along the ray cast from the camera into the scene.
DreamFusion optimizes the NeRF model to align the 3D model with the original text prompt.