Abstract. Photorealistic image stylization concerns transferring style of
a reference photo to a content photo with the constraint that the stylized
photo should remain photorealistic. While several photorealistic image
stylization methods exist, they tend to generate spatially inconsistent
stylizations with noticeable artifacts. In this paper, we propose a method
to address these issues. The proposed method consists of a stylization
step and a smoothing step. While the stylization step transfers the
style of the reference photo to the content photo, the smoothing step
ensures spatially consistent stylizations. Each of the steps has a closedform solution and can be computed efficiently. We conduct extensive
experimental validations. The results show that the proposed method
generates photorealistic stylization outputs that are more preferred by
human subjects as compared to those by the competing methods while
running much faster. Source code and additional results are available at
https://github.com/NVIDIA/FastPhotoStyle.