Author

Wei Guo

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Preprint Oct 2026

Semantic-Critical Regions for Video-to-Audio Generation

In real-world videos, sound events are often associated with localized and fine-grained visual cues, such as object motion, object-part dynamics, contact events, and interactions between objects. Existing video-to-audio (V2A) methods employ implicit conditioning based on global visual representations or explicit contro...

Yu-Ming Fang, Wei Guo, Zhuo-Nan Liang et al. · 0 citations

Preprint Aug 2026

DefaultShift: Auditing Semantic Default Shift in Accelerated Text-to-Image Models

Few-step text-to-image models increasingly replace slower generators, yet acceleration can silently change distributions over unspecified attributes even when individual outputs remain plausible and aligned. We call these distributions semantic defaults and their change under replacement semantic default shift. Existin...

Xuan-Hua Yin, Chuanzhi Xu, Shunqi Mao et al. · 2 citations