Core Concepts
X-Portrait is an innovative portrait animation model that leverages diffusion models for expressive animations with precise motion control.
Abstract
The content introduces X-Portrait, a novel conditional diffusion model for generating expressive and temporally coherent portrait animations. It focuses on capturing dynamic facial expressions and head movements while preserving identity information. The model utilizes a pre-trained diffusion model as the rendering backbone and incorporates novel controlling signals within the ControlNet framework. Experimental results demonstrate the effectiveness of X-Portrait in generating captivating portrait animations across diverse styles and driving sequences.
Structure:
Introduction to Portrait Animation (Self-Reenactment)
Two-step generative process involving image warping and rendering.
Limitations of existing methods in capturing subtle expressions and maintaining resolution.
Diffusion-based Approach for Portrait Animation (Cross-Reenactment)
Utilization of pre-trained diffusion models for image-to-video tasks.
Challenges in controlled image-to-video diffusion approaches.
Methodology of X-Portrait
Leveraging latent diffusion models for portrait animation.
Cross-identity training scheme using appearance reference images.
Experiments and Evaluations
Dataset description and training details.
Comparison with state-of-the-art methods in self and cross reenactment tasks.
Ablation Studies
Impact of cross-identity training, local control module, and scaling strategy on performance.
Limitations and Future Work
Enhancing expressiveness through gesture animation, improving image quality, exploring advanced spatiotemporal attentions.
Stats
X-Portraitは、表現豊かなポートレートアニメーションを生成するために拡散モデルを活用しています。
X-Portraitは、ポートレートアニメーションに革新的な条件付き拡散モデルを提案しています。