Search Results for author: Khoa Luu

Found 66 papers, 15 papers with code

HIG: Hierarchical Interlacement Graph Approach to Scene Graph Generation in Video Understanding

no code implementations5 Dec 2023 Trong-Thuan Nguyen, Pha Nguyen, Khoa Luu

In this paper, we delve into interactivities understanding within visual content by deriving scene graph representations from dense interactivities among humans and objects.

Graph Generation Position +3

Brainformer: Modeling MRI Brain Functions to Machine Vision

no code implementations30 Nov 2023 Xuan-Bac Nguyen, Xin Li, Samee U. Khan, Khoa Luu

In this work, we first present a simple yet effective Brainformer approach, a novel Transformer-based framework, to analyze the patterns of fMRI in the human perception system from the machine learning perspective.

HAtt-Flow: Hierarchical Attention-Flow Mechanism for Group Activity Scene Graph Generation in Videos

no code implementations28 Nov 2023 Naga VS Raviteja Chappa, Pha Nguyen, Thi Hoang Ngan Le, Khoa Luu

Flow-Attention incorporates flow conservation principles, fostering competition for sources and allocation for sinks, effectively preventing the generation of trivial attention.

Graph Generation Scene Graph Generation +2

REACT: Recognize Every Action Everywhere All At Once

no code implementations27 Nov 2023 Naga VS Raviteja Chappa, Pha Nguyen, Page Daniel Dobbs, Khoa Luu

Group Activity Recognition (GAR) is a fundamental problem in computer vision, with diverse applications in sports video analysis, video surveillance, and social scene understanding.

Action Recognition Group Activity Recognition +2

Insect-Foundation: A Foundation Model and Large-scale 1M Dataset for Visual Insect Understanding

no code implementations26 Nov 2023 Hoang-Quan Nguyen, Thanh-Dat Truong, Xuan Bac Nguyen, Ashley Dowling, Xin Li, Khoa Luu

In precision agriculture, the detection and recognition of insects play an essential role in the ability of crops to grow healthy and produce a high-quality yield.

Self-Supervised Learning

Quantum Vision Clustering

no code implementations18 Sep 2023 Xuan Bac Nguyen, Hugh Churchill, Khoa Luu, Samee U. Khan

Unsupervised visual clustering has garnered significant attention in recent times, aiming to characterize distributions of unlabeled visual images through clustering based on a parameterized appearance approach.


The Algonauts Project 2023 Challenge: UARK-UAlbany Team Solution

1 code implementation1 Aug 2023 Xuan-Bac Nguyen, Xudong Liu, Xin Li, Khoa Luu

The goal is to predict brain responses across the entire visual brain, as it is the region where the most reliable responses to images have been observed.

UTOPIA: Unconstrained Tracking Objects without Preliminary Examination via Cross-Domain Adaptation

no code implementations16 Jun 2023 Pha Nguyen, Kha Gia Quach, John Gauch, Samee U. Khan, Bhiksha Raj, Khoa Luu

Then, a new cross-domain MOT adaptation from existing datasets is proposed without any pre-defined human knowledge in understanding and modeling objects.

Domain Adaptation Multiple Object Tracking +1

Cross-view Action Recognition Understanding From Exocentric to Egocentric Perspective

no code implementations25 May 2023 Thanh-Dat Truong, Khoa Luu

Then, we propose a new cross-view self-attention loss learned on unpaired cross-view data to enforce the self-attention mechanism learning to transfer knowledge across views.

Action Recognition

Type-to-Track: Retrieve Any Object via Prompt-based Tracking

no code implementations NeurIPS 2023 Pha Nguyen, Kha Gia Quach, Kris Kitani, Khoa Luu

This paper introduces a novel paradigm for Multiple Object Tracking called Type-to-Track, which allows users to track objects in videos by typing natural language descriptions.

Grounded Multiple Object Tracking Multiple Object Tracking +1

SoGAR: Self-supervised Spatiotemporal Attention-based Social Group Activity Recognition

no code implementations27 Apr 2023 Naga VS Raviteja Chappa, Pha Nguyen, Alexander H Nelson, Han-Seok Seo, Xin Li, Page Daniel Dobbs, Khoa Luu

This paper introduces a novel approach to Social Group Activity Recognition (SoGAR) using Self-supervised Transformers network that can effectively utilize unlabeled video data.

Group Activity Recognition

Fairness in Visual Clustering: A Novel Transformer Clustering Approach

no code implementations14 Apr 2023 Xuan-Bac Nguyen, Chi Nhan Duong, Marios Savvides, Kaushik Roy, Hugh Churchill, Khoa Luu

Promoting fairness for deep clustering models in unsupervised clustering settings to reduce demographic bias is a challenging goal.

Attribute Clustering +2

CROVIA: Seeing Drone Scenes from Car Perspective via Cross-View Adaptation

no code implementations14 Apr 2023 Thanh-Dat Truong, Chi Nhan Duong, Ashley Dowling, Son Lam Phung, Jackson Cothren, Khoa Luu

First, a novel geometry-based constraint to cross-view adaptation is introduced based on the geometry correlation between views.

Autonomous Driving Scene Segmentation +1

Micron-BERT: BERT-based Facial Micro-Expression Recognition

1 code implementation CVPR 2023 Xuan-Bac Nguyen, Chi Nhan Duong, Xin Li, Susan Gauch, Han-Seok Seo, Khoa Luu

By incorporating these components into an end-to-end deep network, the proposed $\mu$-BERT significantly outperforms all previous work in various micro-expression tasks.

Micro Expression Recognition Micro-Expression Recognition +1

FREDOM: Fairness Domain Adaptation Approach to Semantic Scene Understanding

1 code implementation CVPR 2023 Thanh-Dat Truong, Ngan Le, Bhiksha Raj, Jackson Cothren, Khoa Luu

Although Domain Adaptation in Semantic Scene Segmentation has shown impressive improvement in recent years, the fairness concerns in the domain adaptation have yet to be well defined and addressed.

Autonomous Driving Domain Adaptation +4

SPARTAN: Self-supervised Spatiotemporal Transformers Approach to Group Activity Recognition

1 code implementation6 Mar 2023 Naga VS Raviteja Chappa, Pha Nguyen, Alexander H Nelson, Han-Seok Seo, Xin Li, Page Daniel Dobbs, Khoa Luu

In this paper, we propose a new, simple, and effective Self-supervised Spatio-temporal Transformers (SPARTAN) approach to Group Activity Recognition (GAR) using unlabeled video data.

Group Activity Recognition

Contextual Explainable Video Representation: Human Perception-based Understanding

1 code implementation12 Dec 2022 Khoa Vo, Kashu Yamazaki, Phong X. Nguyen, Phat Nguyen, Khoa Luu, Ngan Le

We choose video paragraph captioning and temporal action detection to illustrate the effectiveness of human perception based-contextual representation in video understanding.

Action Detection Action Recognition +4

Neural Cell Video Synthesis via Optical-Flow Diffusion

no code implementations6 Dec 2022 Manuel Serna-Aguilera, Khoa Luu, Nathaniel Harris, Min Zou

This problem presents several challenges as it can be difficult to grow and maintain the culture for days, and it is expensive to acquire the materials and equipment.

Cultural Vocal Bursts Intensity Prediction Denoising +2

Multi-Camera Multi-Object Tracking on the Move via Single-Stage Global Association Approach

no code implementations17 Nov 2022 Pha Nguyen, Kha Gia Quach, Chi Nhan Duong, Son Lam Phung, Ngan Le, Khoa Luu

The development of autonomous vehicles generates a tremendous demand for a low-cost solution with a complete set of camera sensors capturing the environment around the car.

3D Object Detection Autonomous Vehicles +3

Vec2Face-v2: Unveil Human Faces from their Blackbox Features via Attention-based Network in Face Recognition

no code implementations11 Sep 2022 Thanh-Dat Truong, Chi Nhan Duong, Ngan Le, Marios Savvides, Khoa Luu

We therefore introduce a new method named Attention-based Bijective Generative Adversarial Networks in a Distillation framework (DAB-GAN) to synthesize faces of a subject given his/her extracted face recognition features.

Face Recognition Face Reconstruction +2

Depth Perspective-aware Multiple Object Tracking

no code implementations10 Jul 2022 Kha Gia Quach, Huu Le, Pha Nguyen, Chi Nhan Duong, Tien Dai Bui, Khoa Luu

This paper aims to tackle Multiple Object Tracking (MOT), an important problem in computer vision but remains challenging due to many practical issues, especially occlusions.

Depth Estimation Multiple Object Tracking +1

VLCap: Vision-Language with Contrastive Learning for Coherent Video Paragraph Captioning

1 code implementation26 Jun 2022 Kashu Yamazaki, Sang Truong, Khoa Vo, Michael Kidd, Chase Rainwater, Khoa Luu, Ngan Le

In this paper, we leverage the human perceiving process, that involves vision and language interaction, to generate a coherent paragraph description of untrimmed videos.

Contrastive Learning Video Captioning

Self-supervised Domain Adaptation in Crowd Counting

no code implementations7 Jun 2022 Pha Nguyen, Thanh-Dat Truong, Miaoqing Huang, Yi Liang, Ngan Le, Khoa Luu

Self-training crowd counting has not been attentively explored though it is one of the important challenges in computer vision.

Crowd Counting Domain Adaptation

Two-Dimensional Quantum Material Identification via Self-Attention and Soft-labeling in Deep Learning

no code implementations31 May 2022 Xuan Bac Nguyen, Apoorva Bisht, Ben Thompson, Hugh Churchill, Khoa Luu, Samee U. Khan

In this work, we present a novel method to tackle the problem of missing annotation in instance segmentation in 2D quantum material identification.

Instance Segmentation Segmentation +1

Multi-Camera Multiple 3D Object Tracking on the Move for Autonomous Vehicles

no code implementations19 Apr 2022 Pha Nguyen, Kha Gia Quach, Chi Nhan Duong, Ngan Le, Xuan-Bac Nguyen, Khoa Luu

The experimental results on the nuScenes dataset demonstrate the benefits of the proposed method to produce SOTA performance on the existing vision-based tracking dataset.

3D Object Detection 3D Object Tracking +5

Deep Reinforcement Learning in Computer Vision: A Comprehensive Survey

no code implementations25 Aug 2021 Ngan Le, Vidhiwar Singh Rathour, Kashu Yamazaki, Khoa Luu, Marios Savvides

In this work, we provide a detailed review of recent and state-of-the-art research advances of deep reinforcement learning in computer vision.

Image Segmentation object-detection +5

The Right to Talk: An Audio-Visual Transformer Approach

1 code implementation ICCV 2021 Thanh-Dat Truong, Chi Nhan Duong, The De Vu, Hoang Anh Pham, Bhiksha Raj, Ngan Le, Khoa Luu

Therefore, this work introduces a new Audio-Visual Transformer approach to the problem of localization and highlighting the main speaker in both audio and visual channels of a multi-speaker conversation video in the wild.

Clusformer: A Transformer Based Clustering Approach to Unsupervised Large-Scale Face and Visual Landmark Recognition

1 code implementation CVPR 2021 Xuan-Bac Nguyen, Duc Toan Bui, Chi Nhan Duong, Tien D. Bui, Khoa Luu

This work therefore presents the Clusformer, a simple but new perspective of Transformer based approach, to automatic visual clustering via its unsupervised attention mechanism.

Clustering Landmark Recognition

Progressive Semantic Segmentation

1 code implementation CVPR 2021 Chuong Huynh, Anh Tran, Khoa Luu, Minh Hoai

In this work, we present MagNet, a multi-scale framework that resolves local ambiguity by looking at the image at multiple magnification levels.

Land Cover Classification Segmentation +1

Deep reinforcement learning in medical imaging: A literature review

no code implementations5 Mar 2021 S. Kevin Zhou, Hoang Ngan Le, Khoa Luu, Hien V. Nguyen, Nicholas Ayache

Deep reinforcement learning (DRL) augments the reinforcement learning framework, which learns a sequence of actions that maximizes the expected reward, with the representative power of deep neural networks.

Lesion Detection Miscellaneous +3

Flow-based Deformation Guidance for Unpaired Multi-Contrast MRI Image-to-Image Translation

no code implementations3 Dec 2020 Toan Duc Bui, Manh Nguyen, Ngan Le, Khoa Luu

To capture temporal structures in the medical images, we explore the displacement between the consecutive slices using a deformation field.

Generative Adversarial Network Image-to-Image Translation +1

LIAAD: Lightweight Attentive Angular Distillation for Large-scale Age-Invariant Face Recognition

no code implementations9 Apr 2020 Thanh-Dat Truong, Chi Nhan Duong, Kha Gia Quach, Ngan Le, Tien D. Bui, Khoa Luu

This work presents a novel Lightweight Attentive Angular Distillation (LIAAD) approach to Large-scale Lightweight AiFR that overcomes these limitations.

Age-Invariant Face Recognition

Vec2Face: Unveil Human Faces from their Blackbox Features in Face Recognition

no code implementations CVPR 2020 Chi Nhan Duong, Thanh-Dat Truong, Kha Gia Quach, Hung Bui, Kaushik Roy, Khoa Luu

Unveiling face images of a subject given his/her high-level representations extracted from a blackbox Face Recognition engine is extremely challenging.

Benchmarking Face Recognition +2

Image Alignment in Unseen Domains via Domain Deep Generalization

no code implementations28 May 2019 Thanh-Dat Truong, Khoa Luu, Chi Nhan Duong, Ngan Le, Minh-Triet Tran

This paper presents a novel deep learning based approach to tackle the problem of across unseen modalities.

Domain Adaptation

Defining Quantum Neural Networks via Quantum Time Evolution

no code implementations27 May 2019 Aditya Dendukuri, Blake Keeling, Arash Fereidouni, Joshua Burbridge, Khoa Luu, Hugh Churchill

This work presents a novel fundamental algorithm for for defining and training Neural Networks in Quantum Information based on time evolution and the Hamiltonian.

Image Classification

ShrinkTeaNet: Million-scale Lightweight Face Recognition via Shrinking Teacher-Student Networks

2 code implementations25 May 2019 Chi Nhan Duong, Khoa Luu, Kha Gia Quach, Ngan Le

In addition, this work introduces a novel Angular Distillation Loss for distilling the feature direction and the sample distributions of the teacher's hypersphere to its student.

Lightweight Face Recognition

Fast Flow Reconstruction via Robust Invertible nxn Convolution

no code implementations24 May 2019 Thanh-Dat Truong, Khoa Luu, Chi Nhan Duong, Ngan Le, Minh-Triet Tran

The experiments on CIFAR-10, ImageNet and Celeb-HQ datasets, have shown that our invertible $n \times n$ convolution helps to improve the performance of generative models significantly.

Image Processing in Quantum Computers

3 code implementations28 Dec 2018 Aditya Dendukuri, Khoa Luu

Quantum Image Processing (QIP)is an exciting new field showing a lot of promise as a powerful addition to the arsenal of Image Processing techniques.

Non-Volume Preserving-based Fusion to Group-Level Emotion Recognition on Crowd Videos

no code implementations28 Nov 2018 Kha Gia Quach, Ngan Le, Chi Nhan Duong, Ibsa Jalata, Kaushik Roy, Khoa Luu

To demonstrate the robustness and effectiveness of each component in the proposed approach, three experiments were conducted: (i) evaluation on AffectNet database to benchmark the proposed EmoNet for recognizing facial expression; (ii) evaluation on EmotiW2018 to benchmark the proposed deep feature level fusion mechanism NVPF; and, (iii) examine the proposed TNVPF on an innovative Group-level Emotion on Crowd Videos (GECV) dataset composed of 627 videos collected from publicly available sources.

Emotion Recognition

Automatic Face Aging in Videos via Deep Reinforcement Learning

no code implementations CVPR 2019 Chi Nhan Duong, Khoa Luu, Kha Gia Quach, Nghia Nguyen, Eric Patterson, Tien D. Bui, Ngan Le

This paper presents a novel approach to synthesize automatically age-progressed facial images in video sequences using Deep Reinforcement Learning.

Face Verification reinforcement-learning +1

MobiFace: A Lightweight Deep Learning Face Recognition on Mobile Devices

no code implementations27 Nov 2018 Chi Nhan Duong, Kha Gia Quach, Ibsa Jalata, Ngan Le, Khoa Luu

Deep neural networks have been widely used in numerous computer vision applications, particularly in face recognition.

Face Recognition

Seeing Small Faces from Robust Anchor's Perspective

no code implementations CVPR 2018 Chenchen Zhu, Ran Tao, Khoa Luu, Marios Savvides

This paper introduces a novel anchor design to support anchor-based face detection for superior scale-invariant performance, especially on tiny faces.

Face Detection

Longitudinal Face Aging in the Wild - Recent Deep Learning Approaches

no code implementations23 Feb 2018 Chi Nhan Duong, Khoa Luu, Kha Gia Quach, Tien D. Bui

Face Aging has raised considerable attentions and interest from the computer vision community in recent years.

Faster Than Real-time Facial Alignment: A 3D Spatial Transformer Network Approach in Unconstrained Poses

no code implementations ICCV 2017 Chandrasekhar Bhagavatula, Chenchen Zhu, Khoa Luu, Marios Savvides

We present our novel approach to simultaneously extract the 3D shape of the face and the semantically consistent 2D alignment through a 3D Spatial Transformer Network (3DSTN) to model both the camera projection matrix and the warping parameters of a 3D model.

Face Alignment

Reformulating Level Sets as Deep Recurrent Neural Network Approach to Semantic Segmentation

1 code implementation12 Apr 2017 Ngan Le, Kha Gia Quach, Khoa Luu, Marios Savvides, Chenchen Zhu

To address these issues and boost the classic variational LS methods to a new level of the learnable deep learning approaches, we propose a novel definition of contour evolution named Recurrent Level Set (RLS)} to employ Gated Recurrent Unit under the energy minimization of a variational LS functional.

Segmentation Semantic Segmentation

Deep Contextual Recurrent Residual Networks for Scene Labeling

no code implementations12 Apr 2017 T. Hoang Ngan Le, Chi Nhan Duong, Ligong Han, Khoa Luu, Marios Savvides, Dipan Pal

Designed as extremely deep architectures, deep residual networks which provide a rich visual representation and offer robust convergence behaviors have recently achieved exceptional performance in numerous computer vision problems.

Representation Learning Scene Labeling

Towards a Deep Learning Framework for Unconstrained Face Detection

no code implementations16 Dec 2016 Yutong Zheng, Chenchen Zhu, Khoa Luu, Chandrasekhar Bhagavatula, T. Hoang Ngan Le, Marios Savvides

Robust face detection is one of the most important pre-processing steps to support facial expression analysis, facial landmarking, face recognition, pose estimation, building of 3D facial models, etc.

Face Detection Face Recognition +2

Deep Appearance Models: A Deep Boltzmann Machine Approach for Face Modeling

no code implementations23 Jul 2016 Chi Nhan Duong, Khoa Luu, Kha Gia Quach, Tien D. Bui

This paper presents a novel Deep Appearance Models (DAMs) approach, an efficient replacement for AAMs, to accurately capture both shape and texture of face images under large variations.

Age Estimation Super-Resolution

Robust Deep Appearance Models

no code implementations3 Jul 2016 Kha Gia Quach, Chi Nhan Duong, Khoa Luu, Tien D. Bui

In this approach, two crucial components of face images, i. e. shape and texture, are represented by Deep Boltzmann Machines and Robust Deep Boltzmann Machines (RDBM), respectively.

CMS-RCNN: Contextual Multi-Scale Region-based CNN for Unconstrained Face Detection

no code implementations17 Jun 2016 Chenchen Zhu, Yutong Zheng, Khoa Luu, Marios Savvides

Robust face detection in the wild is one of the ultimate components to support various facial related problems, i. e. unconstrained face recognition, facial periocular recognition, facial landmarking and pose estimation, facial expression recognition, 3D facial model construction, etc.

Face Detection Face Recognition +6

Longitudinal Face Modeling via Temporal Deep Restricted Boltzmann Machines

no code implementations CVPR 2016 Chi Nhan Duong, Khoa Luu, Kha Gia Quach, Tien D. Bui

The Temporal Deep Restricted Boltzmann Machines based age progression model together with the prototype faces are then constructed to learn the aging transformation between faces in the sequence.


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