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Junyi Fan

3 accepted papers

2026

FlowPortal: Residual-Corrected Flow for Training-Free Video Relighting and Background Replacement

CVPR 2026

Video relighting with background replacement is a challenging task critical for applications in film production and creative media. Existing methods struggle to balance temporal consistency, spatial fidelity, and illumination naturalness. To address these issues, we introduce FlowPortal, a novel tra

Cited by 0SourcecodeScholar
2024

On the Convergence of Projected Bures-Wasserstein Gradient Descent under Euclidean Strong Convexity

ICML 2024poster

The Bures-Wasserstein (BW) gradient descent method has gained considerable attention in various domains, including Gaussian barycenter, matrix recovery and variational inference problems, due to its alignment with the Wasserstein geometry of normal distributions. Despite its popularity, existing con…

Cited by 0SourcePDFScholar
2024

RL in Markov Games with Independent Function Approximation: Improved Sample Complexity Bound under the Local Access Model

AISTATS 2024poster

Efficiently learning equilibria with large state and action spaces in general-sum Markov games while overcoming the curse of multi-agency is a challenging problem. Recent works have attempted to solve this problem by employing independent linear function classes to approximate the marginal $Q$-value…

Cited by 2SourcePDFScholar