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🧠 AI🟢 BullishImportance 6/10

LiftAvatar: Kinematic-Space Completion for Expression-Controlled 3D Gaussian Avatar Animation

arXiv – CS AI|Hualiang Wei, Shunran Jia, Jialun Liu, Wenhui Li||4 views
🤖AI Summary

LiftAvatar is a new AI system that enhances 3D avatar animation by completing sparse monocular video observations in kinematic space using expression-controlled video diffusion Transformers. The technology addresses limitations in 3D Gaussian Splatting-based avatars by generating high-quality, temporally coherent facial expressions from single or multiple reference images.

Key Takeaways
  • LiftAvatar uses kinematic space completion to improve 3D avatar animation quality from sparse monocular video inputs.
  • The system combines shading maps with expression coefficients for precise and stable facial animation driving.
  • Multi-reference conditioning enables strong 3D consistency by aggregating complementary cues from multiple frames.
  • The technology serves as a plug-and-play enhancer for existing 3D Gaussian Splatting-based avatar systems.
  • Extensive testing shows consistent improvements in animation quality, especially for extreme and unseen expressions.
Read Original →via arXiv – CS AI
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