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Fengzhi Guo

5 accepted papers

2026

Uncertainty Matters in Dynamic Gaussian Splatting for Monocular 4D Reconstruction

ICLR 2026poster

Reconstructing dynamic 3D scenes from monocular input is fundamentally under-constrained, with ambiguities arising from occlusion and extreme novel views. While dynamic Gaussian Splatting offers an efficient representation, vanilla models optimize all Gaussian primitives uniformly, ignoring whether…

Cited by 0SourceScholar
2025

A Full-Optical Pretouch Dual-Modal and Dual-Mechanism (PDM2) Sensor for Robotic Grasping

ICRA 2025

We report a new full-optical pretouch dual-modal and dual-mechanism (PDM2) sensor based on an air-coupled fiber-tip surface micromachined optical ultrasound transducer (SMOUT). Compared to ring-shaped piezoelectric acoustic receivers in previous PDM<sup xmlns:mml="http://www.w3.org/1998/Math/MathML"

Cited by 4SourceScholar
2025

Heterogeneous Sensor Fusion and Active Perception for Transparent Object Reconstruction with a PDM2 Sensor and a Camera

ICRA 2025

Transparent household objects present a challenge for domestic service robots, since neither regular cameras nor RGB-D cameras can provide accurate points for shape reconstruction. The new type of pretouch dual-modality distance and material sensor (PDM<sup xmlns:mml="http://www.w3.org/1998/Math/Mat

Cited by 2SourceScholar
2023

A Pretouch Perception Algorithm for Object Material and Structure Mapping to Assist Grasp and Manipulation Using a DMDSM Sensor

IROS 2023poster

We report a new material and structure mapping (MSM) algorithm to assist robotic grasping and manipulation. Building on our new sensor development, the algorithm has four main components: 1) detection of time-of-flight (ToF) durations for the dual modalities of optoacoustic (OA) and pulse-echo ultra…

Cited by 3SourceScholar
2023

The Third Generation (G3) Dual-Modal and Dual Sensing Mechanisms (DMDSM) Pretouch Sensor for Robotic Grasping

ICRA 2023poster

Fingertip-mounted pretouch sensors are very useful for robotic grasping. In this paper, we report a new (G3) dual-modal and dual sensing mechanisms (DMDSM) pretouch sensor for near-distance ranging and material sensing, which is based on pulse-echo ultrasound (US) and optoacoustics (OA). Different f…

Cited by 4SourceScholar