LongDanceDiff: Long-term Dance Generation with Conditional Diffusion Model

• URL: http://arxiv.org/abs/2308.11945v1
• Date: Wed, 23 Aug 2023 06:37:41 GMT
• Title: LongDanceDiff: Long-term Dance Generation with Conditional Diffusion Model
• Authors: Siqi Yang, Zejun Yang, Zhisheng Wang
• Abstract summary: LongDanceDiff is a conditional diffusion model for sequence-to-sequence long-term dance generation. It addresses the challenges of temporal coherency and spatial constraint. We also address common visual quality issues in dance generation, such as foot sliding and unsmooth motion.
• Score: 3.036230795326545
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Dancing with music is always an essential human art form to express emotion. Due to the high temporal-spacial complexity, long-term 3D realist dance generation synchronized with music is challenging. Existing methods suffer from the freezing problem when generating long-term dances due to error accumulation and training-inference discrepancy. To address this, we design a conditional diffusion model, LongDanceDiff, for this sequence-to-sequence long-term dance generation, addressing the challenges of temporal coherency and spatial constraint. LongDanceDiff contains a transformer-based diffusion model, where the input is a concatenation of music, past motions, and noised future motions. This partial noising strategy leverages the full-attention mechanism and learns the dependencies among music and past motions. To enhance the diversity of generated dance motions and mitigate the freezing problem, we introduce a mutual information minimization objective that regularizes the dependency between past and future motions. We also address common visual quality issues in dance generation, such as foot sliding and unsmooth motion, by incorporating spatial constraints through a Global-Trajectory Modulation (GTM) layer and motion perceptual losses, thereby improving the smoothness and naturalness of motion generation. Extensive experiments demonstrate a significant improvement in our approach over the existing state-of-the-art methods. We plan to release our codes and models soon.

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