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Author

Songchen Ma

2 papers indexed here

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Preprint Oct 2026

PIE-PS: Photometric Stereo from Physical Irradiance Event Streams

Event cameras record asynchronous log-image-irradiance changes with microsecond latency and high dynamic range. These properties are useful for photometric stereo under moving illumination, but raw events are sparse and depend on an unknown contrast threshold. We start from the event trigger model and derive a physical...

Xiang-Ze Meng, Guang-Yu Li, Jing Li et al. · 0 citations
Preprint Sep 2026

Causal-History Test-Time Scaling for Failure Recovery in Autoregressive World-Action Models

A training-free framework that reformulates failure recovery as test-time scaling over causal histories, which decomposes recovery into three coupled decisions: when to revise the causal history, where to recover a reliable history prefix, and which history configuration best supports subsequent execution.

Lin Li, Long Chen, Kwunhang Wong et al. · 0 citations

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