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Jong Hwan Ko

24 accepted papers

2026

RUSH: Recursive and Scalable 3D Coarse to Fine Path Planning

RA-L 2026

Path planning in large-scale, complex 3D environments is fundamentally constrained by a trade-off between path quality and computational speed. This paper presents RUSH (Recursive and Scalable 3D <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Coarse

Cited by 0SourceScholar
2025

Do Not Mimic My Voice : Speaker Identity Unlearning for Zero-Shot Text-to-Speech

ICML 2025poster

The rapid advancement of Zero-Shot Text-to-Speech (ZS-TTS) technology has enabled high-fidelity voice synthesis from minimal audio cues, raising significant privacy and ethical concerns. Despite the threats to voice privacy, research to selectively remove the knowledge to replicate unwanted individu…

2025

Efficient Multi-bit Quantization Network Training via Weight Bias Correction and Bit-wise Coreset Sampling

NeurIPS 2025poster

Multi-bit quantization networks enable flexible deployment of deep neural networks by supporting multiple precision levels within a single model. However, existing approaches suffer from significant training overhead as full-dataset updates are repeated for each supported bit-width, resulting in a c…

Cited by 0SourceScholar
2025

MSQ: Memory-Efficient Bit Sparsification Quantization

ICCV 2025poster

As deep neural networks (DNNs) see increased deployment on mobile and edge devices, optimizing model efficiency has become crucial. Mixed-precision quantization is widely favored, as it offers a superior balance between efficiency and accuracy compared to uniform quantization. However, finding the o…

Cited by 0SourcePDFScholar
2025

Perturb a Model, Not an Image: Towards Robust Privacy Protection via Anti-Personalized Diffusion Models

NeurIPS 2025poster

Recent advances in diffusion models have enabled high-quality synthesis of specific subjects, such as identities or objects. This capability, while unlocking new possibilities in content creation, also introduces significant privacy risks, as personalization techniques can be misused by malicious us…

Cited by 0SourcecodeScholar
2025

Test-Time Fine-Tuning of Image Compression Models for Multi-Task Adaptability

CVPR 2025poster

The field of computer vision was initially inspired by the human visual system and has progressively expanded to include a broader range of machine vision applications. Consequently, image compressors should be designed to effectively accommodate not only human visual perception but also machine vis…

Cited by 0SourcePDFScholar
2024

Compact 3D Gaussian Representation for Radiance Field

CVPR 2024highlight

Neural Radiance Fields (NeRFs) have demonstrated remarkable potential in capturing complex 3D scenes with high fidelity. However one persistent challenge that hinders the widespread adoption of NeRFs is the computational bottleneck due to the volumetric rendering. On the other hand 3D Gaussian splat…

2024

Coordinate-Aware Modulation for Neural Fields

ICLR 2024spotlight

Neural fields, mapping low-dimensional input coordinates to corresponding signals, have shown promising results in representing various signals. Numerous methodologies have been proposed, and techniques employing MLPs and grid representations have achieved substantial success. MLPs allow compact and…

2024

HandDiff: 3D Hand Pose Estimation with Diffusion on Image-Point Cloud

CVPR 2024highlight

Extracting keypoint locations from input hand frames known as 3D hand pose estimation is a critical task in various human-computer interaction applications. Essentially the 3D hand pose estimation can be regarded as a 3D point subset generative problem conditioned on input frames. Thanks to the rece…

2023

Masked Wavelet Representation for Compact Neural Radiance Fields

CVPR 2023poster

Neural radiance fields (NeRF) have demonstrated the potential of coordinate-based neural representation (neural fields or implicit neural representation) in neural rendering. However, using a multi-layer perceptron (MLP) to represent a 3D scene or object requires enormous computational resources and…

2023

Mip-Grid: Anti-aliased Grid Representations for Neural Radiance Fields

NeurIPS 2023poster

Despite the remarkable achievements of neural radiance fields (NeRF) in representing 3D scenes and generating novel view images, the aliasing issue, rendering 'jaggies' or 'blurry' images at varying camera distances, remains unresolved in most existing approaches. The recently proposed mip-NeRF has…

Cited by 10SourcePDFScholar
2023

Multi-Scale Bidirectional Recurrent Network with Hybrid Correlation for Point Cloud Based Scene Flow Estimation

ICCV 2023poster

Scene flow estimation provides the fundamental motion perception of a dynamic scene, which is of practical importance in many computer vision applications. In this paper, we propose a novel multi-scale bidirectional recurrent architecture that iteratively optimizes the coarse-to-fine scene flow esti…

Cited by 17PDFcodeScholar
2023

Regression to Classification: Waveform Encoding for Neural Field-Based Audio Signal Representation

ICASSP 2023accepted

Neural fields, also known as coordinate-based representations, are an emerging signal representation framework. This approach has also been used to represent audio signals, but the generated audio often contains noise. To reduce noise and improve representation quality, we propose using waveform enc…

Cited by 0SourceScholar
2022

ADA-VAD: Unpaired Adversarial Domain Adaptation for Noise-Robust Voice Activity Detection

ICASSP 2022accepted

Voice Activity Detection (VAD) is becoming an essential front-end component in various speech processing systems. As those systems are commonly deployed in environments with diverse noise types and low signal-to-noise ratios (SNRs), an effective VAD method should perform robust detection of speech r…

Cited by 0SourceScholar
2022

Bi-PointFlowNet: Bidirectional Learning for Point Cloud Based Scene Flow Estimation

ECCV 2022poster

"Scene flow estimation, which extracts point-wise motion between scenes, is becoming a crucial task in many computer vision tasks. However, all of the existing estimation methods utilize only the unidirectional features, restricting the accuracy and generality. This paper presents a novel scene flow…

2021

HandFoldingNet: A 3D Hand Pose Estimation Network Using Multiscale-Feature Guided Folding of a 2D Hand Skeleton

ICCV 2021poster

With increasing applications of 3D hand pose estimation in various human-computer interaction applications, convolution neural networks (CNNs) based estimation models have been actively explored. However, the existing models require complex architectures or redundant computational resources to trade…

Cited by 56PDFcodeScholar
2018

An Unsupervised Anomalous Event Detection Framework with Class Aware Source Separation

ICASSP 2018accepted

This paper presents a novel problem of detection and localization of anomalous events due to a certain class of objects in video data with applications to smart surveillance. A baseline system is proposed that uses a convolutional neural network (CNN) to generate pixel level masks corresponding to o…

Cited by 0SourceScholar
2018

Cascade Adversarial Machine Learning Regularized with a Unified Embedding

ICLR 2018poster

Injecting adversarial examples during training, known as adversarial training, can improve robustness against one-step attacks, but not for unknown iterative attacks. To address this challenge, we first show iteratively generated adversarial images easily transfer between networks trained with the s…

2018

Limiting Numerical Precision of Neural Networks to Achieve Real-Time Voice Activity Detection

ICASSP 2018accepted

Fast and robust voice-activity detection is critical to efficiently process speech. While deep-learning based methods to detect voice have shown competitive accuracies, the best models in the literature incur over a 100 ms latency on commodity processors. Such delays are unacceptable for real-time s…

Cited by 0SourceScholar