  High-fidelity and efficient audio-driven talking head generation has been a
key research topic in computer graphics and computer vision. In this work, we
study vector image based audio-driven talking head generation. Compared with
directly animating the raster image that most widely used in existing works,
vector image enjoys its excellent scalability being used for many applications.
There are two main challenges for vector image based talking head generation:
the high-quality vector image reconstruction w.r.t. the source portrait image
and the vivid animation w.r.t. the audio signal. To address these, we propose a
novel scalable vector graphic reconstruction and animation method, dubbed
VectorTalker. Specifically, for the highfidelity reconstruction, VectorTalker
hierarchically reconstructs the vector image in a coarse-to-fine manner. For
the vivid audio-driven facial animation, we propose to use facial landmarks as
intermediate motion representation and propose an efficient landmark-driven
vector image deformation module. Our approach can handle various styles of
portrait images within a unified framework, including Japanese manga, cartoon,
and photorealistic images. We conduct extensive quantitative and qualitative
evaluations and the experimental results demonstrate the superiority of
VectorTalker in both vector graphic reconstruction and audio-driven animation.
