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Jin Young Choi

24 accepted papers

2024

Gaussian Mixture Proposals with Pull-Push Learning Scheme to Capture Diverse Events for Weakly Supervised Temporal Video Grounding

AAAI 2024technical

In the weakly supervised temporal video grounding study, previous methods use predetermined single Gaussian proposals which lack the ability to express diverse events described by the sentence query. To enhance the expression ability of a proposal, we propose a Gaussian mixture proposal (GMP) that c…

2024

Hierarchical Visual Feature Aggregation for OCR-Free Document Understanding

NeurIPS 2024poster

We present a novel OCR-free document understanding framework based on pretrained Multimodal Large Language Models (MLLMs). Our approach employs multi-scale visual features to effectively handle various font sizes within document images. To address the increasing costs of considering the multi-scale…

Cited by 2SourcePDFScholar
2024

MoST: Motion Style Transformer Between Diverse Action Contents

CVPR 2024poster

While existing motion style transfer methods are effective between two motions with identical content their performance significantly diminishes when transferring style between motions with different contents. This challenge lies in the lack of clear separation between content and style of a motion.…

2023

Balanced Energy Regularization Loss for Out-of-Distribution Detection

CVPR 2023poster

In the field of out-of-distribution (OOD) detection, a previous method that use auxiliary data as OOD data has shown promising performance. However, the method provides an equal loss to all auxiliary data to differentiate them from inliers. However, based on our observation, in various tasks, there…

2023

Confidence-Based Feature Imputation for Graphs with Partially Known Features

ICLR 2023poster

This paper investigates a missing feature imputation problem for graph learning tasks. Several methods have previously addressed learning tasks on graphs with missing features. However, in cases of high rates of missing features, they were unable to avoid significant performance degradation. To over…

2023

Quantitative Manipulation of Custom Attributes on 3D-Aware Image Synthesis

CVPR 2023poster

While 3D-based GAN techniques have been successfully applied to render photo-realistic 3D images with a variety of attributes while preserving view consistency, there has been little research on how to fine-control 3D images without limiting to a specific category of objects of their properties. To…

2022

Global-Local Motion Transformer for Unsupervised Skeleton-Based Action Learning

ECCV 2022poster

"We propose a new transformer model for the task of unsupervised learning of skeleton motion sequences. The existing transformer model utilized for unsupervised skeleton-based action learning is learned the instantaneous velocity of each joint from adjacent frames without global motion information.…

2022

Hypergraph-Induced Semantic Tuplet Loss for Deep Metric Learning

CVPR 2022poster

In this paper, we propose Hypergraph-Induced Semantic Tuplet (HIST) loss for deep metric learning that leverages the multilateral semantic relations of multiple samples to multiple classes via hypergraph modeling. We formulate deep metric learning as a hypergraph node classification problem in which…

Cited by 42PDFcodeScholar
2022

The Majority Can Help the Minority: Context-Rich Minority Oversampling for Long-Tailed Classification

CVPR 2022poster

The problem of class imbalanced data is that the generalization performance of the classifier deteriorates due to the lack of data from minority classes. In this paper, we propose a novel minority over-sampling method to augment diversified minority samples by leveraging the rich context of the majo…

Cited by 200PDFcodeScholar
2021

AutoLR: Layer-wise Pruning and Auto-tuning of Learning Rates in Fine-tuning of Deep Networks

AAAI 2021technical

Existing fine-tuning methods use a single learning rate over all layers. In this paper, first, we discuss that trends of layer-wise weight variations by fine-tuning using a single learning rate do not match the well-known notion that lower-level layers extract general features and higher-level layer…

2021

Class-Attentive Diffusion Network for Semi-Supervised Classification

AAAI 2021technical

Recently, graph neural networks for semi-supervised classification have been widely studied. However, existing methods only use the information of limited neighbors and do not deal with the inter-class connections in graphs. In this paper, we propose Adaptive aggregation with Class-Attentive Diffusi…

2021

Influence-Balanced Loss for Imbalanced Visual Classification

ICCV 2021poster

In this paper, we propose a balancing training method to address problems in imbalanced data learning. To this end, we derive a new loss used in the balancing training phase that alleviates the influence of samples that cause an overfitted decision boundary. The proposed loss efficiently improves th…

Cited by 192PDFcodeScholar
2021

Unsupervised Hyperbolic Representation Learning via Message Passing Auto-Encoders

CVPR 2021poster

Most of the existing literature regarding hyperbolic embedding concentrate upon supervised learning, whereas the use of unsupervised hyperbolic embedding is less well explored. In this paper, we analyze how unsupervised tasks can benefit from learned representations in hyperbolic space. To explore h…

Cited by 39PDFcodeScholar
2019

A Comprehensive Overhaul of Feature Distillation

ICCV 2019poster

We investigate the design aspects of feature distillation methods achieving network compression and propose a novel feature distillation method in which the distillation loss is designed to make a synergy among various aspects: teacher transform, student transform, distillation feature position and…

Cited by 791PDFcodeScholar
2019

Symmetric Graph Convolutional Autoencoder for Unsupervised Graph Representation Learning

ICCV 2019poster

We propose a symmetric graph convolutional autoencoder which produces a low-dimensional latent representation from a graph. In contrast to the existing graph autoencoders with asymmetric decoder parts, the proposed autoencoder has a newly designed decoder which builds a completely symmetric autoenco…

Cited by 319PDFScholar
2018

Context-Aware Deep Feature Compression for High-Speed Visual Tracking

CVPR 2018poster

We propose a new context-aware correlation filter based tracking framework to achieve both high computational speed and state-of-the-art performance among real-time trackers. The major contribution to the high computational speed lies in the proposed deep feature compression that is achieved by a co…

2017

Action-Decision Networks for Visual Tracking With Deep Reinforcement Learning

CVPR 2017spotlight

This paper proposes a novel tracker which is controlled by sequentially pursuing actions learned by deep reinforcement learning. In contrast to the existing trackers using deep networks, the proposed tracker is designed to achieve a light computation as well as satisfactory tracking accuracy in both…

Cited by 635PDFScholar
2017

Attentional Correlation Filter Network for Adaptive Visual Tracking

CVPR 2017poster

We propose a new tracking framework with an attentional mechanism that chooses a subset of the associated correlation filters for increased robustness and computational efficiency. The subset of filters is adaptively selected by a deep attentional network according to the dynamic properties of the t…

Cited by 388PDFScholar
2017

Variational Autoencoded Regression: High Dimensional Regression of Visual Data on Complex Manifold

CVPR 2017poster

This paper proposes a new high dimensional regression method by merging Gaussian process regression into a variational autoencoder framework. In contrast to other regression methods, the proposed method focuses on the case where output responses are on a complex high dimensional manifold, such as im…

Cited by 36PDFScholar
2016

Visual Path Prediction in Complex Scenes With Crowded Moving Objects

CVPR 2016poster

This paper proposes a novel path prediction algorithm for progressing one step further than the existing works focusing on single target path prediction. In this paper, we consider moving dynamics of co-occurring objects for path prediction in a scene that includes crowded moving objects. To solve t…

Cited by 44PDFScholar
2016

Visual Tracking Using Attention-Modulated Disintegration and Integration

CVPR 2016poster

In this paper, we present a novel attention-modulated visual tracking algorithm that decomposes an object into multiple cognitive units, and trains multiple elementary trackers in order to modulate the distribution of attention according to various feature and kernel types. In the integration stage…

Cited by 215PDFScholar