Author

Shin'ichi Satoh

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Preprint Sep 2026

SALI: Shot-Aware Late Interaction for Cross-Shot Relation Matching in Text-to-Video Retrieval using Film-Grammar Knowledge

Text-to-video retrieval usually represents a video clip by a single embedding. This embedding often loses important relations between people. E.g., an interaction"Anna confronts Mark"is regularly filmed as alternating shot and reverse shot of both (Fig. 1a). No single shot or averaged embedding over clip shots captures...

Toya Oyama, Rainer Lienhart, Shin'ichi Satoh · 0 citations

Preprint Aug 2026

Temporal Tree of Thought: Reasoning-Guided Visual Cue Search for Long-Video Understanding

The proposed Temporal Tree of Thought T^3, a training-free framework for adaptive coarse-to-fine long-video understanding, constructs a question-agnostic hierarchical temporal tree via recursive temporally constrained clustering, where each node represents a contiguous segment with an informative key frame.

Ziling Huang, Shin'ichi Satoh · 0 citations

Preprint Aug 2026

Beyond Frame Selection: Rethinking Long-Video Understanding with MLLMs

VideoRouter (VR) is proposed that rethinks long-video understanding as coordinating complementary evidence views rather than selecting a single subset of frames, and introduces a verification-guided router to determine which view is better supported by the selected evidence and select the final answer.

Ziling Huang, Yuki M. Asano, Shin'ichi Satoh · 0 citations