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Pengfei Gu

8 accepted papers

2026

TopoCL: Topological Contrastive Learning for Medical Imaging

CVPR 2026

Contrastive learning (CL) has become a powerful approach for learning representations from unlabeled images. However, existing CL methods focus predominantly on visual appearance features while neglecting topological characteristics (e.g., connectivity patterns, boundary configurations, cavity forma

Cited by 0SourcecodeScholar
2025

EffoNAV: An Effective Foundation-Model-Based Visual Navigation Approach in Challenging Environment

RA-L 2025

Image-goal navigation is a critical task in autonomous visual navigation, requiring the robot to navigate to a target localization specified by an image. Previous works using data-driven methods achieve great success while they mostly leverage simple network architecture and train it from scratch, w

Cited by 6SourcecodeScholar
2024

Gradient Reactivation Enhanced Causal Attention for Out-Of-Distribution Generalizable Graph Classification

ICASSP 2024accepted

Seeking for generalizable graph representations becomes hot spot in the area of graph learning. Recently, causality theory has been applied for extracting the causal relations between graph data and labels, which are generalizable under distribution shift and result in better OOD generalization. In…

Cited by 0SourceScholar
2023

Searching Lottery Tickets in Graph Neural Networks: A Dual Perspective

ICLR 2023poster

Graph Neural Networks (GNNs) have shown great promise in various graph learning tasks. However, the computational overheads of fitting GNNs to large-scale graphs grow rapidly, posing obstacles to GNNs from scaling up to real-world applications. To tackle this issue, Graph Lottery Ticket (GLT) hypoth…

Cited by 38SourcePDFScholar
2022

Real-Time Visual Inertial Odometry with a Resource-Efficient Harris Corner Detection Accelerator on FPGA Platform

IROS 2022poster

Visual Inertial Odometry (VIO) is a widely studied localization technique in robotics. State-of-the-art VIO algorithms are composed of two parts: a frontend which performs visual perception and inertial measurement pre-processing, and a backend which fuses vision and inertial measurements to estimat…

Cited by 6SourceScholar
2022

Visual Localization and Mapping Leveraging the Constraints of Local Ground Manifolds

RA-L 2022

In order to improve the accuracy of simultaneous localization and mapping problem, plane motion assumption is often used for advanced ground vehicle SLAM system. However, such an assumption is not always suitable to complex and changeable road scenes. In this letter, we propose a stereo-vision based

Cited by 13SourceScholar