Author

Ding-Wei Xian

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Preprint Oct 2026

ChronoWorld: Camera-Controlled Consistent 4D World Generation via Spatiotemporal Cues and Geometric Reflections

While existing camera-controllable video generation models can produce visually compelling sequences, preserving intrinsic 4D spatiotemporal coherence remains challenging. To address this limitation, we propose ChronoWorld, an"Observation--State--Reflection"framework that leverages spatiotemporal causal cues and recons...

Xiao-Yu Zhou, Ding-Wei Xian, Zhen-Yu Wang et al. · 0 citations

Preprint Oct 2026

DynStream: Online Streaming 4D Gaussian Reconstruction of Dynamic Worlds from Unposed Video

Online reconstruction of dynamic 4D scenes from long, unposed streaming videos requires both continuous processing and photorealistic rendering, which existing methods struggle to achieve simultaneously. Existing feed-forward Gaussian methods are restricted to offline processing, whereas online point-cloud approaches s...

Ding-Wei Xian, Xiao-Yu Zhou, Ya-Jiao Xiong et al. · 0 citations