  Current 3D scene stylization methods transfer textures and colors as styles
using arbitrary style references, lacking meaningful semantic correspondences.
We introduce Reference-Based Non-Photorealistic Radiance Fields (Ref-NPR) to
address this limitation. This controllable method stylizes a 3D scene using
radiance fields with a single stylized 2D view as a reference. We propose a ray
registration process based on the stylized reference view to obtain pseudo-ray
supervision in novel views. Then we exploit semantic correspondences in content
images to fill occluded regions with perceptually similar styles, resulting in
non-photorealistic and continuous novel view sequences. Our experimental
results demonstrate that Ref-NPR outperforms existing scene and video
stylization methods regarding visual quality and semantic correspondence. The
code and data are publicly available on the project page at
https://ref-npr.github.io.
