We propose a method for editing NeRF scenes with text-instructions. Given a NeRF of a scene and the collection of images used to reconstruct it, our method uses an image-conditioned diffusion model (InstructPix2Pix) to iteratively edit the input images while optimizing the underlying scene, resulting in an optimized 3D scene that respects the edit instruction. We demonstrate that our proposed method is able to edit large-scale, real-world scenes, and is able to accomplish more realistic, targeted edits than prior work.

Our method gradually updates a reconstructed NeRF scene by iteratively updating the dataset images while training the NeRF:

1. An image is rendered from the scene at a training viewpoint.
2. It is edited by InstructPix2Pix given a global text instruction.
3. The training dataset image is replaced with the edited image.
4. The NeRF continues training as usual.

Example updates to the training dataset images over time. Notice that the edits are gradually becoming more consistent.

@inproceedings{instructnerf2023,
         author = {Haque, Ayaan and Tancik, Matthew and Efros, Alexei and Holynski, Aleksander and Kanazawa, Angjoo},
         title = {Instruct-NeRF2NeRF: Editing 3D Scenes with Instructions},
         booktitle = {Proceedings of the IEEE/CVF International Conference on Computer Vision},
         year = {2023},
        } 

We thank our colleagues for their insightful feedback helpful discussions, in particular Ethan Weber, Frederik Warburg, Ben Poole, Richard Szeliski, Jon Barron, Alexander Kristoffersen, Rohan Mathur, Alejandro Escontrela, and the Nerfstudio team.