UniAnimate
U
Unianimate
Overview :
UniAnimate is a unified video diffusion model framework for character image animation. It maps reference images, pose guidance, and noisy video to a shared feature space, reducing optimization difficulty and ensuring temporal coherence. UniAnimate can handle long sequences, supports random noise input and first-frame conditioning input, significantly improving its ability to generate long-term videos. Additionally, it explores alternative time modeling architectures based on state-space models to replace the original computationally intensive time Transformer. UniAnimate achieves superior synthetic results compared to existing state-of-the-art techniques in both quantitative and qualitative evaluations, and can generate highly consistent one-minute videos through iterative use of the first-frame conditioning strategy.
Target Users :
UniAnimate's target audience is primarily researchers and developers in the field of computer vision and graphics, especially those specializing in character animation and video generation. It is suitable for applications requiring high-quality, long-duration character video animations, such as film production, game development, and virtual reality experiences.
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Use Cases
Generate high-quality character animations for film production using UniAnimate.
Utilize UniAnimate to generate coherent character action sequences in game development.
Create realistic character dynamic effects in virtual reality experiences through UniAnimate.
Features
Extract the latent features of a given reference image using CLIP encoder and VAE encoder.
Incorporate the representation of reference poses into the final reference guidance for learning human structure in the reference image.
Encode the target-driven pose sequence using a pose encoder and concatenate it with the noisy input along the channel dimension.
Stack the concatenated noisy input with the reference guidance along the time dimension and input it into the unified video diffusion model for noise removal.
The time module in the unified video diffusion model can be either time Transformer or time Mamba.
Use the VAE decoder to map the generated latent video to the pixel space.
How to Use
First, prepare a reference image and a sequence of target poses.
Extract the latent features of the reference image using the CLIP encoder and VAE encoder.
Combine the representation of the reference poses with the latent features to form the reference guidance.
Encode the target pose sequence using a pose encoder and combine it with the noisy video.
Input the combined data into the unified video diffusion model for noise removal.
Choose the time module based on your needs, which can be time Transformer or time Mamba.
Finally, use the VAE decoder to convert the processed latent video into pixel-level video output.
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