Yu-Cheng Chou (@YuCheng_Chou_) profile picture

PhD student at @CCVLatJHU @JHU. Research Intern at @NVIDIA. Working on Embodied AI, MLLM, Video Gen.

CCVL@Johns Hopkins University
Joined May 2019
Importantly, we open-source the entire curation pipeline: • trajectory reconstruction (SfM / hloc) • geometric verification • motion consistency checks • automatic repair & filtering → You can build your own OpenSafari.
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We also built OpenSafari, a dataset designed to break existing models: • in-the-wild FPV drone videos • large-scale camera motion • strong parallax & elevation changes Every trajectory is geometrically verified.
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The difference is most visible under aggressive motion: • sharp turns • large parallax • long trajectories Baselines collapse, ours stays consistent.
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Our idea: build a world memory. At each frame, the model retrieves 3D-consistent information conditioned on the camera pose. → This enables stable generation under 6-DoF motion → Even for long trajectories in complex outdoor scenes
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But in reality, most video generation models today: ❌ Only work on narrow domains (e.g., real estate scenes) ❌ Break as soon as the camera moves ❌ Fail to follow the camera trajectory The core issue? → No persistent world representation
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CVPR 2026🎥We built a model that lets you fly through a generated video world. Not just generating frames — but maintaining a consistent 3D world under complex camera motion. Code, ckpt, and even the data pipeline are all open-sourced ↓ #AI #worldmodel #videogen #cvpr #drone
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[3/4] Pretty markdown ≠ perception. OSS often formats well yet misses visual evidence or the question intent. Without grounding, style can even mask failure modes. We measure the gap explicitly on MMMU. #LLM #MMMU #VisualAlignment
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[2/4] Longer chains, higher gains. Qwen’s deliberate, multi-step reasoning ties evidence→logic→answer, especially in STEM. OSS tends to be shorter, so accuracy lags when problems require real visual grounding. #STEM #Reasoning #LLM
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[1/4] We tested InternVL3.5-aligned GPT-OSS on MMMU and found visual alignment gaps: misreads, shallow grounding, and repetition. It’s an early step, not the solution—good scaffolding, weak seeing. #Multimodal #VisionLanguage
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