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Sungha Choi

15 accepted papers

2026

Concept-Aware LoRA for Domain-Aligned Segmentation Dataset Generation

CVPR 2026

This paper addresses the challenge of data scarcity in semantic segmentation by generating datasets through text-to-image (T2I) generation models, reducing image acquisition and labeling costs. Segmentation dataset generation faces two key challenges: 1) aligning generated samples with the target do

Cited by 0SourcecodeScholar
2026

FLoC: Facility Location-Based Efficient Visual Token Compression for Long Video Understanding

ICLR 2026poster

Recent studies in long video understanding have harnessed the advanced visual-language reasoning capabilities of Large Multimodal Models (LMMs), driving the evolution of video-LMMs specialized for processing extended video sequences. However, the scalability of these models is severely limited by th…

Cited by 0SourceScholar
2025

CustomKD: Customizing Large Vision Foundation for Edge Model Improvement via Knowledge Distillation

CVPR 2025poster

We propose a novel knowledge distillation approach, CustomKD, that effectively leverages large vision foundation models (LVFMs) to enhance the performance of edge models (e.g., MobileNetV3). Despite recent advancements in LVFMs, such as DINOv2 and CLIP, their potential in knowledge distillation for…

2025

Generalized Contrastive Learning for Universal Multimodal Retrieval

NeurIPS 2025poster

Despite their consistent performance improvements, cross-modal retrieval models (e.g., CLIP) show degraded performances with retrieving keys composed of fused image-text modality (e.g., Wikipedia pages with both images and text). To address this critical challenge, multimodal retrieval has been rece…

Cited by 5SourceScholar
2025

Understanding Personal Concept in Open-Vocabulary Semantic Segmentation

ICCV 2025poster

While open-vocabulary semantic segmentation (OVSS) can segment an image into semantic regions based on arbitrarily given text descriptions even for classes unseen during training, it fails to understand personal texts (e.g. 'my mug cup') for segmenting regions of specific interest to users. This pap…

Cited by 0SourcePDFScholar
2024

Feature Diversification and Adaptation for Federated Domain Generalization

ECCV 2024poster

"Federated learning, a distributed learning paradigm, utilizes multiple clients to build a robust global model. In real-world applications, local clients often operate within their limited domains, leading to a ‘domain shift’ across clients. Privacy concerns limit each client’s learning to its own d…

Cited by 1SourcePDFScholar
2023

EcoTTA: Memory-Efficient Continual Test-Time Adaptation via Self-Distilled Regularization

CVPR 2023poster

This paper presents a simple yet effective approach that improves continual test-time adaptation (TTA) in a memory-efficient manner. TTA may primarily be conducted on edge devices with limited memory, so reducing memory is crucial but has been overlooked in previous TTA studies. In addition, long-te…

Cited by 97SourcePDFScholar
2023

Progressive Random Convolutions for Single Domain Generalization

CVPR 2023poster

Single domain generalization aims to train a generalizable model with only one source domain to perform well on arbitrary unseen target domains. Image augmentation based on Random Convolutions (RandConv), consisting of one convolution layer randomly initialized for each mini-batch, enables the model…

2023

TTN: A Domain-Shift Aware Batch Normalization in Test-Time Adaptation

ICLR 2023poster

This paper proposes a novel batch normalization strategy for test-time adaptation. Recent test-time adaptation methods heavily rely on the modified batch normalization, i.e., transductive batch normalization (TBN), which calculates the mean and the variance from the current test batch rather than us…

Cited by 111SourcePDFScholar
2023

Towards Open-Set Test-Time Adaptation Utilizing the Wisdom of Crowds in Entropy Minimization

ICCV 2023poster

Test-time adaptation (TTA) methods, which generally rely on the model's predictions (e.g., entropy minimization) to adapt the source pretrained model to the unlabeled target domain, suffer from noisy signals originating from 1) incorrect or 2) open-set predictions. Long-term stable adaptation is ham…

Cited by 26PDFScholar
2022

Improving Test-Time Adaptation via Shift-Agnostic Weight Regularization and Nearest Source Prototypes

ECCV 2022poster

"This paper proposes a novel test-time adaptation strategy that adjusts the model pre-trained on the source domain using only unlabeled online data from the target domain to alleviate the performance degradation due to the distribution shift between the source and target domains. Adapting the entire…

Cited by 78SourcePDFScholar
2021

RobustNet: Improving Domain Generalization in Urban-Scene Segmentation via Instance Selective Whitening

CVPR 2021poster

Enhancing the generalization capability of deep neural networks to unseen domains is crucial for safety-critical applications in the real world such as autonomous driving. To address this issue, this paper proposes a novel instance selective whitening loss to improve the robustness of the segmentati…

Cited by 343PDFcodeScholar
2021

Standardized Max Logits: A Simple yet Effective Approach for Identifying Unexpected Road Obstacles in Urban-Scene Segmentation

ICCV 2021poster

Identifying unexpected objects on roads in semantic segmentation (e.g., identifying dogs on roads) is crucial in safety-critical applications. Existing approaches use images of unexpected objects from external datasets or require additional training (e.g., retraining segmentation networks or trainin…

Cited by 113PDFcodeScholar
2020

Cars Can't Fly Up in the Sky: Improving Urban-Scene Segmentation via Height-Driven Attention Networks

CVPR 2020poster

This paper exploits the intrinsic features of urban-scene images and proposes a general add-on module, called height-driven attention networks (HANet), for improving semantic segmentation for urban-scene images. It emphasizes informative features or classes selectively according to the vertical posi…

Cited by 242PDFcodeScholar
2019

Image-To-Image Translation via Group-Wise Deep Whitening-And-Coloring Transformation

CVPR 2019oral

Recently, unsupervised exemplar-based image-to-image translation, conditioned on a given exemplar without the paired data, has accomplished substantial advancements. In order to transfer the information from an exemplar to an input image, existing methods often use a normalization technique, e.g., a…

Cited by 181PDFcodeScholar