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Hyungtae Lee

12 accepted papers

2025

TK-Planes: Tiered K-Planes with High Dimensional Feature Vectors for Dynamic UAV-based Scenes

IROS 2025

In this paper, we present a new approach to improve the neural rendering fidelity of in-the-wild unmanned aerial vehicle (UAV)-based scenes. Our formulation is designed for dynamic scenes, consisting of small moving objects or human actions in particular. We propose an extension of K-Planes Neural R

Cited by 3SourceScholar
2024

Two Teachers Are Better Than One: Leveraging Depth In Training Only For Unsupervised Obstacle Segmentation

IROS 2024poster

We present a novel unsupervised obstacle segmentation architecture that follows a novel Relation Distillation (RD) paradigm. Our architecture design was inspired by a self-supervised teacher-student approach that relies on the Semantic Distillation originally devised for representation learning. Whi…

Cited by 0SourceScholar
2024

UAV-Sim: NeRF-based Synthetic Data Generation for UAV-based Perception

ICRA 2024poster

Tremendous variations coupled with large degrees of freedom in UAV-based imaging conditions lead to a significant lack of data in adequately learning UAV-based perception models. Using various synthetic renderers in conjunction with perception models is prevalent to create synthetic data to augment…

Cited by 11SourceScholar
2023

Progressive Transformation Learning for Leveraging Virtual Images in Training

CVPR 2023highlight

To effectively interrogate UAV-based images for detecting objects of interest, such as humans, it is essential to acquire large-scale UAV-based datasets that include human instances with various poses captured from widely varying viewing angles. As a viable alternative to laborious and costly data c…

Cited by 12SourcePDFScholar
2022

Negative Samples Are at Large: Leveraging Hard-Distance Elastic Loss for Re-identification

ECCV 2022poster

"We present a Momentum Re-identification (MoReID) framework that can leverage a very large number of negative samples in training for general re-identification task. The design of this framework is inspired by Momentum Contrast (MoCo), which uses a dictionary to store current and past batches to bui…

Cited by 9SourcePDFScholar
2020

S-DOD-CNN: Doubly Injecting Spatially-Preserved Object Information for Event Recognition

ICASSP 2020accepted

We present a novel event recognition approach called Spatially-preserved Doubly-injected Object Detection CNN (S-DOD-CNN), which incorporates the spatially preserved object detection information in both a direct and an indirect way. Indirect injection is carried out by simply sharing the weights bet…

Cited by 0SourceScholar
2018

Exploitation of Semantic Keywords for Malicious Event Classification

ICASSP 2018accepted

Learning an event classifier is challenging when the scenes are semantically different but visually similar. However, as humans, we typically handle such tasks painlessly by adding our background semantic knowledge. Motivated by this observation, we aim to provide an empirical study about how additi…

Cited by 0SourceScholar
2016

Task-conversions for integrating human and machine perception in a unified task

IROS 2016poster

The different strategies for feature extraction and synthesis employed by humans and computers are often complementary, hence combining the two into an integrated object recognition system may considerably improve performance over either used in isolation. Rapid Serial Visual Presentation (RSVP) is…

Cited by 10SourceScholar
2015

Human-autonomy sensor fusion for rapid object detection

IROS 2015poster

Human-autonomy sensor fusion is an emerging technology with a wide range of applications, including object detection/recognition, surveillance, collaborative control, and prosthetics. For object detection, humans and computer-vision-based systems employ different strategies to locate targets, likely…

Cited by 25SourceScholar