Technical implementation details of the dynamic adapter module
The dynamic adapter module designed in the X-Dyna project is the core component of its technical architecture, which creatively solves the fusion problem between static features and dynamic actions. The working principle of the module is to inject the information of texture features, lighting conditions and color styles of the reference image into the layers of the UNet codec network in a spatial attention manner through a multi-level feature pyramid structure. The concrete implementation consists of three key steps: first, the semantic features of the reference image are extracted by the pre-trained CLIP visual coder; then, these features are converted into spatial attention weights using a learnable adaptation layer; and finally, feature modulation is implemented in each denoising step of the diffusion model. This approach allows the generated animation to not only precisely follow the motion trajectory of the driving video, but also perfectly maintain the subtle features of the original image such as hair texture and material reflections, which improves 37% over the baseline model in the FID metric evaluation.
This answer comes from the articleX-Dyna: Static Portrait Reference Video Pose Generation Video to Make Missy's Photos DanceThe
