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Qi Tian

3 papers indexed

arxivcs.CV2026-07-23

GrainGS: Gradient-Decoupled Gaussian Splatting for Efficient Dynamic Novel View Synthesis

Jiahao He, Yihua Shao, Zhengkai Zhao, Pan Gao, Fei Ma, Jingcai Guo, et al.

Dynamic scene reconstruction with 3D Gaussian Splatting requires a balance between fine-grained motion modeling, structural stability, and compact representation. Existing per-primitive methods provide flexible local deformation but often suffer from redundant primitive growth, w…

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arxivcs.CV2026-07-04

ProxyUp: Training-Free Proxy-Conditioned Video Generation for Controllable Dynamics

Zanwei Zhou, Jiazhong Cen, Jiemin Fang, Yumeng He, Chen Yang, Sikuang Li, et al.

Precise control over complex dynamics remains challenging for modern video generative models, as text prompts alone often cannot specify physically plausible, fine-grained motion and interactions. We introduce $\textit{proxy-conditioned video generation}$, where a coarse proxy vi…

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arxivcs.CLcs.AIcs.CV2026-07-02

Reasoning LLM Improves Speaker Recognition in Long-form TV Dramas

Yuxuan Li, Lingxi Xie, Xinyue Huo, Jihao Qiu, Jiacheng Shao, Pengfei Chen, et al.

Long-form TV dramas present a formidable challenge for comprehensive video understanding, where deciphering complex storyline often relies on \textbf{speaker recognition}, the task of accurately attributing each spoken utterance to its respective character. In this paper, we adva…

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