SCAIL-2:端到端上下文条件控制的角色动画统一框架
阅读原文· arxiv.orgSCAIL-2 提出绕过姿态骨架等中间表示的端到端角色动画框架,通过直接拼接驱动视频获取全部视觉信息。为解决端到端数据匮乏,用解耦条件统一子任务,构建异构运动迁移数据集 MotionPair-60K。采用上下文掩码条件与模式特定 RoPE 作为软引导,并引入 Bias-Aware DPO 构建偏好对以缓解合成数据在细节区域的误差。实验表明,该方法在多个任务中显著优于现有 SOTA。部分合成数据与模型权重将开源。
Controlled character animation requires transferring motion from a driving sequence to a reference character. Prior works heavily rely on intermediate representations, including pose skeletons to represent motion or masked background to represent environment, which inevitably leads to information loss. To address this, we present SCAIL-2, an framework that bypasses those intermediates and achieves end-to-end character animation. By directly concatenating driving videos to the sequence, the model can obtain all the required visual information from the input video. To address lack of end-to-end data, we unify sub-tasks of character animation with decoupled conditions and then curate a pipeline to synthesize MotionPair-60K, an end-to-end motion transfer dataset containing heterogeneous tasks of character animation. To archive the unification, we utilize in-context mask conditioning and mode-specific RoPE as soft guidance beyond textual instructions and raw visual information. To address synthetic discrepancy in detailed regions, we propose Bias-Aware DPO to construct preference items to mitigate the errors. Extensive experiments demonstrate that our method substantially outperforms existing state-of-the-art approaches in various character animation tasks. A large subset of synthetic data as well as model weights will be released at our project page: https://teal024.github.io/SCAIL-2/.