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Wenhao Shen

4 accepted papers

2026

MotionGRPO: Overcoming Low Intra-Group Diversity in GRPO-Based Egocentric Motion Recovery

ICML 2026poster

This paper studies full-body 3D human motion recovery from head-mounted device signals. Existing diffusion-based methods often rely on global distribution matching, leading to local joint reconstruction errors. We propose MotionGRPO, a novel framework leveraging reinforcement learning post-training …

Cited by 0SourceScholar
2026

VLM-Guided Group Preference Alignment for Diffusion-based Human Mesh Recovery

CVPR 2026

Human mesh recovery (HMR) from a single RGB image is inherently ambiguous, as multiple 3D poses can correspond to the same 2D observation. Recent diffusion-based methods tackle this by generating various hypotheses, but often sacrifice accuracy. They yield predictions that are either physically impl

Cited by 0SourceScholar
2025

ADHMR: Aligning Diffusion-based Human Mesh Recovery via Direct Preference Optimization

ICML 2025poster

Human mesh recovery (HMR) from a single image is inherently ill-posed due to depth ambiguity and occlusions. Probabilistic methods have tried to solve this by generating numerous plausible 3D human mesh predictions, but they often exhibit misalignment with 2D image observations and weak robustness t…

2025

Image Quality Assessment: Investigating Causal Perceptual Effects with Abductive Counterfactual Inference

CVPR 2025poster

Existing full-reference image quality assessment (FR-IQA) methods often fail to capture the complex causal mechanisms that underlie human perceptual responses to image distortions, limiting their ability to generalize across diverse scenarios. In this paper, we propose an FR-IQA method based on abdu…

Cited by 0SourcePDFScholar