Author

Satoshi Ikehata

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Preprint Aug 2026

CapFrame: Text-Instructed Viewpoint Grounding in 3D Gaussian Scenes via Geometric Pseudo Labels

3D Gaussian Splatting (3DGS) enables photorealistic real-time novel view synthesis, yet placing a virtual camera to capture a desired frame remains largely manual. Existing language-guided approaches in 3D scenes mainly focus on object-centric grounding, determining what to observe but rarely controlling how it should...

Ji-Rong Li, Satoshi Ikehata, Shuhei Kurita et al. · 0 citations

Preprint Sep 2026

World-Coherent Decoding: Self-Verifying Test-Time Planning for World Action Models

World Action Models (WAMs) aim to control robots by stochastically generating visual futures and then decoding actions, but empirical observations indicate that the results can strongly depend on which future is selected. We propose World-Coherent-Decoding (WCD), a self-verifying test-time planning framework that treat...

Chuhan Zhang, Seiji Ito, Kenta Hoshino et al. · 0 citations

Preprint Jul 2026

Retrieving and Refining Winning Noise Tickets for Diffusion-Based Motion Generation

Diffusion-based text-to-motion models synthesize realistic human motions but often exhibit semantic drift from the input text. Motion is inherently temporal, especially in compositional and long-duration sequences that require semantic consistency across multiple action segments and smooth kinematic transitions through...

Sakuya Ota, Qing Yu, Kent Fujiwara et al. · 0 citations