NaP-Control: 拡散事前分布を操る高速・多用途キャラクタ制御
NaP-Control: Navigating Diffusion Prior for Versatile and Fast Character Control
強化学習で拡散ポリシーのノイズを操作し、タスクに応じた動作を高速・高精度に生成するキャラクタ制御手法を提案した。
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著者: Chia-Wen Chen, Yan Wu, Korrawe Karunratanakul, Siyu Tang
分類: cs.GR, cs.LG, cs.RO
原文アブストラクト
Achieving precise, versatile whole-body character control in physics-based animation remains challenging. Recent diffusion-based policies generate rich and expressive motions but typically rely on gradient-based test-time guidance to satisfy task objectives, which is slow and can reduce robustness. We introduce NaP-Control (Navigating Diffusion Prior for Versatile and Fast Character Control), abbreviated as NaP. Our method uses reinforcement learning to manipulate the latent noise of a task-agnostic diffusion policy prior, steering it toward task-specific behaviors for fast, robust control with high motion fidelity. In contrast to methods that rely solely on offline training, NaP interacts with the environment during training to correct motions and optimize task rewards, improving success rates and enabling adaptation to challenging scenarios. By directly predicting task-optimized diffusion noise, NaP eliminates iterative guidance during denoising and enables efficient inference. Experiments show that NaP attains higher success rates and faster inference while preserving natural motion across diverse tasks.
関連論文
- 物理ベースキャラクタ制御のためのニューラルカテゴリカル事前分布キャラクタ制御
- 仮想人間のための受動制御アーキテクチャキャラクタ制御
