Author

Haoyang Tong

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Preprint Jul 2026

Hallo4D: Multi-Modal Hallucination Mitigation for Consistent Spatio-Temporal Generation

While recent advances in 3D generation have enabled impressive visual synthesis, existing methods often rely on 2D diffusion supervision without explicit mechanisms for geometric consistency, leading to spatial hallucinations such as duplicated structures and misaligned geometry. These issues become more severe in 4D g...

Hong-Bo Wang, Huaibo Huang, Jie Cao et al. · 0 citations

Preprint Aug 2026

Pixel-Space Diffusion via Observation Operators

Observation Operator Diffusion is proposed, a unified framework that aligns both the supervision trajectory and feature refinement with the intrinsic recovery order of image structures and introduces GL-CoDA, a decoder that injects scale-specific Gaussian-Lanczos observations across decoding stages for coarse-to-fine f...

Shaojie Guo, Li-Chen Ma, Haoyang Tong et al. · 1 citation

Preprint Aug 2026

Energy-Guided Flow Matching

Energy-Guided Flow Matching is introduced that explicitly models a coarse-to-fine generative trajectory by moving endpoint that evolves smoothly from low-frequency image to clean image and requires no adaptation of the backbone and training data.

Haoyang Tong, Yu He, Fang Li et al. · 0 citations