OrthoPlanes: A Novel Representation for Better 3D-Awareness of GANs

Honglin He, Zhuoqian Yang, Shikai Li, Bo Dai, Wayne Wu; Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV), 2023, pp. 22996-23007

We present a new method for generating realistic and view-consistent images with fine geometry from 2D image collections. Our method proposes a hybrid explicit-implicit representation called OrthoPlanes, which encodes fine-grained 3D information in feature maps that can be efficiently generated by modifying 2D StyleGANs. Compared to previous representations, our method has better scalability and expressiveness with clear and explicit information. As a result, our method can handle more challenging view-angles and synthesize articulated objects with high spatial degree of freedom. Experiments demonstrate that our method achieves state-of-the-art results on FFHQ and SHHQ datasets, both quantitatively and qualitatively.