Diffusion models have demonstrated remarkable success in generative modeling. In this paper, we propose PADS (Pose Analysis by Diffusion Synthesis), a novel framework designed to address various challenges in 3D human pose analysis through a unified pipeline. Central to PADS are two distinctive strategies: i) learning a task-agnostic pose prior using a diffusion synthesis process to effectively capture the kinematic constraints in human pose data, and ii) unifying multiple pose analysis tasks like estimation, completion, denoising, etc, as instances of inverse problems. The learned pose prior will be treated as a regularization imposing on task-specific constraints, guiding the optimization process through a series of conditional denoising steps. PADS represents the first diffusion-based framework for tackling general 3D human pose analysis within the inverse problem framework. Its performance has been validated on different benchmarks, signaling the adaptability and robustness of this pipeline.

PADS是一个基于扩散的框架，通过一个统一的流程解决了3D人体姿势分析中的各种挑战，其核心是学习使用扩散合成过程的与任务无关的姿势先验，以有效捕捉人体姿势数据中的运动约束，并将多个姿势分析任务（如估计、完整性、去噪等）统一为逆问题的实例。学到的姿势先验被视为对任务特定约束的正则化约束，通过一系列条件去噪步骤引导优化过程。PADS是第一个基于扩散的框架，用于在逆问题框架内解决一般的3D人体姿势分析，其性能已经在不同的基准测试上得到验证，表明了该流程的适应性和鲁棒性。

通过扩散合成进行的3D人体姿势分析