RGBAvatar: Reduced Gaussian Blendshapes for Online Modeling of Head Avatars

Figure 1 . Our RGBAvatar reconstructs a high-fidelity head avatar from a 2-minute monocular video in about 80 seconds, using a reduced set of Gaussian blendshapes. These blendshapes are linearly combined to generate avatar animations in real time at about 400 FPS.