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HyunGyu Lee

12 accepted papers

2026

CANDI: Curated Test-Time Adaptation for Multivariate Time-Series Anomaly Detection Under Distribution Shift

AAAI 2026technical

Multivariate time-series anomaly detection (MTSAD) aims to identify deviations from normality in multivariate time-series and is critical in real-world applications. However, in real-world deployments, distribution shifts are ubiquitous and cause severe performance degradation in pre-trained anomaly

Cited by 0SourcePDFScholar
2026

Geometric Backstepping Control of Omnidirectional Tiltrotors Incorporating Servo–Rotor Dynamics for Robustness against Sudden Disturbances

ICRA 2026poster

This work presents a geometric backstepping controller for a variable-tilt omnidirectional multirotor that explicitly accounts for both servo and rotor dynamics. Considering actuator dynamics is essential for more effective and reliable operation, particularly during aggressive flight maneuvers or r…

2025

Geometric Tracking Control of Omnidirectional Multirotors for Aggressive Maneuvers

RA-L 2025

An omnidirectional multirotor has the maneuverability of decoupled translational and rotational motions, superseding the traditional multirotors' motion capability. Such maneuverability is achieved due to the ability of the omnidirectional multirotor to frequently alter the thrust amplitude and dire

Cited by 10SourceScholar
2025

UDC-VIT: A Real-World Video Dataset for Under-Display Cameras

ICCV 2025poster

Even though an Under-Display Camera (UDC) is an advanced imaging system, the display panel significantly degrades captured images or videos, introducing low transmittance, blur, noise, and flare issues. Tackling such issues is challenging because of the complex degradation of UDCs, including diverse…

2024

DAFA: Distance-Aware Fair Adversarial Training

ICLR 2024poster

The disparity in accuracy between classes in standard training is amplified during adversarial training, a phenomenon termed the robust fairness problem. Existing methodologies aimed to enhance robust fairness by sacrificing the model's performance on easier classes in order to improve its performan…

2023

UDC-SIT: A Real-World Dataset for Under-Display Cameras

NeurIPS 2023poster

Under Display Camera (UDC) is a novel imaging system that mounts a digital camera lens beneath a display panel with the panel covering the camera. However, the display panel causes severe degradation to captured images, such as low transmittance, blur, noise, and flare. The restoration of UDC-degrad…

2022

Stein Latent Optimization for Generative Adversarial Networks

ICLR 2022poster

Generative adversarial networks (GANs) with clustered latent spaces can perform conditional generation in a completely unsupervised manner. In the real world, the salient attributes of unlabeled data can be imbalanced. However, most of existing unsupervised conditional GANs cannot cluster attributes…

2021

A Morphing Quadrotor that Can Optimize Morphology for Transportation

IROS 2021poster

Multirotors can be effectively applied to various tasks, such as transportation, investigation, exploration, and lifesaving, depending on the type of payload. However, due to the nature of multirotors, the payload loaded on the multirotor is limited in its position and weight, which presents a major…

Cited by 21SourceScholar
2021

CAROS-Q: Climbing Aerial RObot System Adopting Rotor Offset With a Quasi-Decoupling Controller

RA-L 2021

Unmanned Aerial Vehicles (UAVs) have continually proven their effectiveness in various fields. However, UAVs have not yet matured enough to be used for vertical surface maintenance tasks, such as building inspection or cleaning. To mitigate this issue, this letter proposes a novel design for a coaxi

Cited by 20SourceScholar
2021

Low-level Pose Control of Tilting Multirotor for Wall Perching Tasks Using Reinforcement Learning

IROS 2021poster

Recently, needs for unmanned aerial vehicles (UAVs) that are attachable to the wall have been highlighted. As one of the ways to address the need, researches on various tilting multirotors that can increase maneuverability has been employed. Unfortunately, existing studies on the tilting multirotors…

Cited by 9SourceScholar
2021

Removing Undesirable Feature Contributions Using Out-of-Distribution Data

ICLR 2021poster

Several data augmentation methods deploy unlabeled-in-distribution (UID) data to bridge the gap between the training and inference of neural networks. However, these methods have clear limitations in terms of availability of UID data and dependence of algorithms on pseudo-labels. Herein, we propose…

2020

Adversarial Vertex Mixup: Toward Better Adversarially Robust Generalization

CVPR 2020oral

Adversarial examples cause neural networks to produce incorrect outputs with high confidence. Although adversarial training is one of the most effective forms of defense against adversarial examples, unfortunately, a large gap exists between test accuracy and training accuracy in adversarial trainin…

Cited by 151PDFcodeScholar