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Marrying Pixel and Latent Diffusion Models for Efficient and High-Quality Text-to-Video Generation

Sep 28, 2023 - notes.aimodels.fyi
Researchers from the National University of Singapore have proposed a hybrid approach, Show-1, to generate high-fidelity videos from textual descriptions. The model combines pixel-based and latent diffusion models to balance alignment accuracy, visual quality, and computational efficiency. The Show-1 model first uses a pixel-based diffusion model to create a low-resolution video keyframe sequence, which is then fed into a latent diffusion model for efficient super-resolution. The result is a high-resolution video that accurately matches the text prompt, using 15 times less GPU memory than solely pixel or latent models.

The Show-1 model demonstrates that combining complementary methodologies can overcome individual limitations and inherit the advantages of each. This approach could provide guidance for improving other multimedia tasks and opens new possibilities for building more powerful and efficient generative models. The researchers hope this will bring us closer to creating a long-form text-to-video model that can produce more than a few seconds of high-quality footage.

Key takeaways:

  • Researchers from the National University of Singapore have proposed a hybrid approach called Show-1 that combines pixel-based and latent diffusion models for text-to-video generation.
  • Pixel-based diffusion models offer precise alignment between text and video but require high computational resources, while latent diffusion models are efficient but struggle with text-video alignment.
  • Show-1 uses a pixel-based diffusion model to generate a low-resolution video keyframe sequence, then uses a latent diffusion model for efficient super-resolution, achieving high text-video fidelity with computational efficiency.
  • The Show-1 model demonstrates how combining complementary methodologies can overcome individual limitations, providing guidance for improving other multimedia tasks.
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