Author

Zhiheng Ma

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Preprint Aug 2026

Phase-Aligned Finite-Fourier Periodic Deformation for 4D Medical Image Interpolation

A phase-aligned temporal reparameterization that maps normalized within-interval time to a latent motion phase according to deformation variation intensity, thereby better modeling non-uniform motion progression and achieving state-of-the-art performance over existing baselines.

Hao-Jin Li, Hengzhuo Wang, Zhiheng Ma et al. · 0 citations

Preprint Aug 2026

Low-Rank Velocity Fields as a Structural Prior for Unsupervised 4D Medical Image Interpolation

This work proposes low-rank velocity fields as a structural prior, constraining motion to a structured Tucker low-rank velocity field space that decomposes motion into globally shared spatial bases and a compact sample-specific core, thereby encouraging spatially correlated, anatomy-consistent deformation while suppres...

Hao-Jin Li, Hengzhuo Wang, Chang Liu et al. · 0 citations

Jul 2026

DLAM: Distributional Latent Actions with Temporal Constraints

DLAM, a distributional latent-action model that represents each transition as a diagonal Gaussian, is introduced, a distributional latent-action model that learns more temporally consistent latent dynamics than existing latent-action baselines and achieves stronger direct and cumulative reconstruction on held-out video...

Zuojin Tang, Feifan Luo, Haoyun Liu et al. · arXiv.org · 0 citations