VoLux-GAN: A Generative Model for 3D Face Synthesis with HDRI Relighting
This work addresses the challenge of creating photorealistic, relightable 3D faces for applications in computer graphics and virtual reality, representing an incremental advancement in generative models.
The paper tackled the problem of synthesizing 3D-aware faces with realistic relighting by proposing VoLux-GAN, a generative framework that achieved photorealistic results through volumetric HDRI relighting and supervised image decomposition.
We propose VoLux-GAN, a generative framework to synthesize 3D-aware faces with convincing relighting. Our main contribution is a volumetric HDRI relighting method that can efficiently accumulate albedo, diffuse and specular lighting contributions along each 3D ray for any desired HDR environmental map. Additionally, we show the importance of supervising the image decomposition process using multiple discriminators. In particular, we propose a data augmentation technique that leverages recent advances in single image portrait relighting to enforce consistent geometry, albedo, diffuse and specular components. Multiple experiments and comparisons with other generative frameworks show how our model is a step forward towards photorealistic relightable 3D generative models.