Search Results for author: Ulas Bagci

Found 106 papers, 37 papers with code

Explainable Transformer Prototypes for Medical Diagnoses

1 code implementation11 Mar 2024 Ugur Demir, Debesh Jha, Zheyuan Zhang, Elif Keles, Bradley Allen, Aggelos K. Katsaggelos, Ulas Bagci

Deployments of artificial intelligence in medical diagnostics mandate not just accuracy and efficacy but also trust, emphasizing the need for explainability in machine decisions.

A Probabilistic Hadamard U-Net for MRI Bias Field Correction

no code implementations8 Mar 2024 Xin Zhu, Hongyi Pan, Yury Velichko, Adam B. Murphy, Ashley Ross, Baris Turkbey, Ahmet Enis Cetin, Ulas Bagci

Random samples drawn from latent space are then incorporated with a prototypical corrected image to generate multiple plausible images.

MRI segmentation

Harmonized Spatial and Spectral Learning for Robust and Generalized Medical Image Segmentation

no code implementations18 Jan 2024 Vandan Gorade, Sparsh Mittal, Debesh Jha, Rekha Singhal, Ulas Bagci

This paper presents a novel approach that synergies spatial and spectral representations to enhance domain-generalized medical image segmentation.

Cardiac Segmentation Image Segmentation +2

AI Powered Road Network Prediction with Multi-Modal Data

1 code implementation28 Dec 2023 Necip Enes Gengec, Ergin Tari, Ulas Bagci

This study presents an innovative approach for automatic road detection with deep learning, by employing fusion strategies for utilizing both lower-resolution satellite imagery and GPS trajectory data, a concept never explored before.

Road Segmentation

Adaptive Smooth Activation for Improved Disease Diagnosis and Organ Segmentation from Radiology Scans

no code implementations29 Nov 2023 Koushik Biswas, Debesh Jha, Nikhil Kumar Tomar, Gorkem Durak, Alpay Medetalibeyoglu, Matthew Antalek, Yury Velichko, Daniela Ladner, Amir Bohrani, Ulas Bagci

We apply this new activation function to two important and commonly used general tasks in medical image analysis: automatic disease diagnosis and organ segmentation in CT and MRI.

Image Classification Organ Segmentation +2

Rethinking Intermediate Layers design in Knowledge Distillation for Kidney and Liver Tumor Segmentation

no code implementations28 Nov 2023 Vandan Gorade, Sparsh Mittal, Debesh Jha, Ulas Bagci

HLFD strategically distills knowledge from a combination of middle layers to earlier layers and transfers final layer knowledge to intermediate layers at both the feature and pixel levels.

Knowledge Distillation Tumor Segmentation

Leveraging Unlabeled Data for 3D Medical Image Segmentation through Self-Supervised Contrastive Learning

no code implementations21 Nov 2023 Sanaz Karimijafarbigloo, Reza Azad, Yury Velichko, Ulas Bagci, Dorit Merhof

Current 3D semi-supervised segmentation methods face significant challenges such as limited consideration of contextual information and the inability to generate reliable pseudo-labels for effective unsupervised data use.

Contrastive Learning Image Segmentation +3

INCODE: Implicit Neural Conditioning with Prior Knowledge Embeddings

1 code implementation28 Oct 2023 Amirhossein Kazerouni, Reza Azad, Alireza Hosseini, Dorit Merhof, Ulas Bagci

INCODE comprises a harmonizer network and a composer network, where the harmonizer network dynamically adjusts key parameters of the activation function.

Denoising Image Inpainting +1

SynergyNet: Bridging the Gap between Discrete and Continuous Representations for Precise Medical Image Segmentation

no code implementations26 Oct 2023 Vandan Gorade, Sparsh Mittal, Debesh Jha, Ulas Bagci

When evaluating skin lesion and brain tumor segmentation datasets, we observe a remarkable improvement of 1. 71% in Intersection-over Union scores for skin lesion segmentation and of 8. 58% for brain tumor segmentation.

Brain Tumor Segmentation Image Segmentation +5

EMIT-Diff: Enhancing Medical Image Segmentation via Text-Guided Diffusion Model

no code implementations19 Oct 2023 Zheyuan Zhang, Lanhong Yao, Bin Wang, Debesh Jha, Elif Keles, Alpay Medetalibeyoglu, Ulas Bagci

We leverage recent diffusion probabilistic models to generate realistic and diverse synthetic medical image data that preserve the essential characteristics of the original medical images by incorporating edge information of objects to guide the synthesis process.

Data Augmentation Image Generation +4

Radiomics Boosts Deep Learning Model for IPMN Classification

no code implementations11 Sep 2023 Lanhong Yao, Zheyuan Zhang, Ugur Demir, Elif Keles, Camila Vendrami, Emil Agarunov, Candice Bolan, Ivo Schoots, Marc Bruno, Rajesh Keswani, Frank Miller, Tamas Gonda, Cemal Yazici, Temel Tirkes, Michael Wallace, Concetto Spampinato, Ulas Bagci

We test our proposed decision-fusion model in multi-center data sets of 246 multi-contrast MRI scans and obtain superior performance to the state of the art (SOTA) in this field.

Classification Decision Making

Beyond Self-Attention: Deformable Large Kernel Attention for Medical Image Segmentation

1 code implementation31 Aug 2023 Reza Azad, Leon Niggemeier, Michael Huttemann, Amirhossein Kazerouni, Ehsan Khodapanah Aghdam, Yury Velichko, Ulas Bagci, Dorit Merhof

To address these challenges, we introduce the concept of \textbf{Deformable Large Kernel Attention (D-LKA Attention)}, a streamlined attention mechanism employing large convolution kernels to fully appreciate volumetric context.

Image Segmentation Medical Image Segmentation +1

Prototype Learning for Out-of-Distribution Polyp Segmentation

no code implementations7 Aug 2023 Nikhil Kumar Tomar, Debesh Jha, Ulas Bagci

Our model is designed to perform effectively on out-of-distribution (OOD) datasets from multiple centers.

Image Segmentation Segmentation +1

Ensemble Learning with Residual Transformer for Brain Tumor Segmentation

no code implementations31 Jul 2023 Lanhong Yao, Zheyuan Zhang, Ulas Bagci

Brain tumor segmentation is an active research area due to the difficulty in delineating highly complex shaped and textured tumors as well as the failure of the commonly used U-Net architectures.

Brain Tumor Segmentation Ensemble Learning +2

A Privacy-Preserving Walk in the Latent Space of Generative Models for Medical Applications

1 code implementation6 Jul 2023 Matteo Pennisi, Federica Proietto Salanitri, Giovanni Bellitto, Simone Palazzo, Ulas Bagci, Concetto Spampinato

Generative Adversarial Networks (GANs) have demonstrated their ability to generate synthetic samples that match a target distribution.

Privacy Preserving

TransRUPNet for Improved Out-of-Distribution Generalization in Polyp Segmentation

no code implementations3 Jun 2023 Debesh Jha, Nikhil Kumar Tomar, Debayan Bhattacharya, Ulas Bagci

We develop a novel real-time deep learning based architecture, TransRUPNet that is based on a Transformer and residual upsampling network for colorectal polyp segmentation to improve OOD generalization.

Out-of-Distribution Generalization

Self-Supervised Learning for Organs At Risk and Tumor Segmentation with Uncertainty Quantification

no code implementations4 May 2023 Ilkin Isler, Debesh Jha, Curtis Lisle, Justin Rineer, Patrick Kelly, Bulent Aydogan, Mohamed Abazeed, Damla Turgut, Ulas Bagci

In this study, our goal is to show the impact of self-supervised pre-training of transformers for organ at risk (OAR) and tumor segmentation as compared to costly fully-supervised learning.

Segmentation Self-Supervised Learning +2

GazeSAM: What You See is What You Segment

1 code implementation26 Apr 2023 Bin Wang, Armstrong Aboah, Zheyuan Zhang, Ulas Bagci

This study investigates the potential of eye-tracking technology and the Segment Anything Model (SAM) to design a collaborative human-computer interaction system that automates medical image segmentation.

Image Segmentation Medical Image Segmentation +2

Vision Transformer for Efficient Chest X-ray and Gastrointestinal Image Classification

no code implementations23 Apr 2023 Smriti Regmi, Aliza Subedi, Ulas Bagci, Debesh Jha

Convolutional neural networks (CNNs) have become the de-facto standard in medical image analysis tasks because of their ability to learn complex features from the available datasets, which makes them surpass humans in many image-understanding tasks.

Benchmarking Data Augmentation +1

DeepSegmenter: Temporal Action Localization for Detecting Anomalies in Untrimmed Naturalistic Driving Videos

no code implementations13 Apr 2023 Armstrong Aboah, Ulas Bagci, Abdul Rashid Mussah, Neema Jakisa Owor, Yaw Adu-Gyamfi

Identifying unusual driving behaviors exhibited by drivers during driving is essential for understanding driver behavior and the underlying causes of crashes.

Classification Segmentation +1

Real-time Multi-Class Helmet Violation Detection Using Few-Shot Data Sampling Technique and YOLOv8

no code implementations13 Apr 2023 Armstrong Aboah, Bin Wang, Ulas Bagci, Yaw Adu-Gyamfi

Real-time implementation of such systems is crucial for traffic surveillance and enforcement, however, most of these systems are not real-time.

object-detection Object Detection

Domain Generalization with Adversarial Intensity Attack for Medical Image Segmentation

1 code implementation5 Apr 2023 Zheyuan Zhang, Bin Wang, Lanhong Yao, Ugur Demir, Debesh Jha, Ismail Baris Turkbey, Boqing Gong, Ulas Bagci

In real-world scenarios, however, it is common for models to encounter data from new and different domains to which they were not exposed to during training.

Domain Generalization Image Segmentation +2

TransNetR: Transformer-based Residual Network for Polyp Segmentation with Multi-Center Out-of-Distribution Testing

1 code implementation13 Mar 2023 Debesh Jha, Nikhil Kumar Tomar, Vanshali Sharma, Ulas Bagci

Therefore, we intend to develop a novel real-time deep learning based architecture, Transformer based Residual network (TransNetR), for colon polyp segmentation and evaluate its diagnostic performance.

Benchmarking Medical Image Segmentation +2

Selecting the Best Optimizers for Deep Learning based Medical Image Segmentation

no code implementations5 Feb 2023 Aliasghar Mortazi, Vedat Cicek, Elif Keles, Ulas Bagci

To this end, we proposed a new cyclic optimization method (\textit{CLMR}) to address the efficiency and accuracy problems in deep learning based medical image segmentation.

Image Segmentation Medical Image Segmentation +2

The Past, Current, and Future of Neonatal Intensive Care Units with Artificial Intelligence

no code implementations1 Feb 2023 Elif Keles, Ulas Bagci

We also discuss possible directions for new AI models and the future of neonatology with the rising power of AI, suggesting roadmaps for the integration of AI into neonatal intensive care units.

EEG Survival Analysis

RUPNet: Residual upsampling network for real-time polyp segmentation

no code implementations6 Jan 2023 Nikhil Kumar Tomar, Ulas Bagci, Debesh Jha

Here, we propose a novel architecture, Residual Upsampling Network (RUPNet) for colon polyp segmentation that can process in real-time and show high recall and precision.

Medical Image Segmentation

Domain Generalization with Correlated Style Uncertainty

1 code implementation20 Dec 2022 Zheyuan Zhang, Bin Wang, Debesh Jha, Ugur Demir, Ulas Bagci

In this regard, style augmentation is a strong DG method taking advantage of instance-specific feature statistics containing informative style characteristics to synthetic novel domains.

Domain Generalization Retrieval

A Critical Appraisal of Data Augmentation Methods for Imaging-Based Medical Diagnosis Applications

no code implementations14 Dec 2022 Tara M. Pattilachan, Ugur Demir, Elif Keles, Debesh Jha, Derk Klatte, Megan Engels, Sanne Hoogenboom, Candice Bolan, Michael Wallace, Ulas Bagci

Current data augmentation techniques and transformations are well suited for improving the size and quality of natural image datasets but are not yet optimized for medical imaging.

Data Augmentation Medical Diagnosis

Multi-Scale Fusion Methodologies for Head and Neck Tumor Segmentation

no code implementations29 Oct 2022 Abhishek Srivastava, Debesh Jha, Bulent Aydogan, Mohamed E. Abazeed, Ulas Bagci

Head and Neck (H\&N) organ-at-risk (OAR) and tumor segmentations are essential components of radiation therapy planning.

Tumor Segmentation

DilatedSegNet: A Deep Dilated Segmentation Network for Polyp Segmentation

1 code implementation24 Oct 2022 Nikhil Kumar Tomar, Debesh Jha, Ulas Bagci

DilatedSegNet is an encoder-decoder network that uses pre-trained ResNet50 as the encoder from which we extract four levels of feature maps.

Segmentation

COVID-19 Detection from Respiratory Sounds with Hierarchical Spectrogram Transformers

1 code implementation19 Jul 2022 Idil Aytekin, Onat Dalmaz, Kaan Gonc, Haydar Ankishan, Emine U Saritas, Ulas Bagci, Haydar Celik, Tolga Cukur

Monitoring of prevalent airborne diseases such as COVID-19 characteristically involves respiratory assessments.

Multi-Contrast MRI Segmentation Trained on Synthetic Images

no code implementations6 Jul 2022 Ismail Irmakci, Zeki Emre Unel, Nazli Ikizler-Cinbis, Ulas Bagci

Based on synthetic image training, our segmentation results were as high as 93. 91\%, 94. 11\%, 91. 63\%, 95. 33\%, for muscle, fat, bone, and bone marrow delineation, respectively.

Image Segmentation MRI segmentation +2

Neural Transformers for Intraductal Papillary Mucosal Neoplasms (IPMN) Classification in MRI images

1 code implementation21 Jun 2022 Federica Proietto Salanitri, Giovanni Bellitto, Simone Palazzo, Ismail Irmakci, Michael B. Wallace, Candice W. Bolan, Megan Engels, Sanne Hoogenboom, Marco Aldinucci, Ulas Bagci, Daniela Giordano, Concetto Spampinato

Early detection of precancerous cysts or neoplasms, i. e., Intraductal Papillary Mucosal Neoplasms (IPMN), in pancreas is a challenging and complex task, and it may lead to a more favourable outcome.

TransResU-Net: Transformer based ResU-Net for Real-Time Colonoscopy Polyp Segmentation

1 code implementation17 Jun 2022 Nikhil Kumar Tomar, Annie Shergill, Brandon Rieders, Ulas Bagci, Debesh Jha

With high efficacy in our performance metrics, we concluded that TransResU-Net could be a strong benchmark for building a real-time polyp detection system for the early diagnosis, treatment, and prevention of colorectal cancer.

Medical Image Segmentation

Video Capsule Endoscopy Classification using Focal Modulation Guided Convolutional Neural Network

1 code implementation16 Jun 2022 Abhishek Srivastava, Nikhil Kumar Tomar, Ulas Bagci, Debesh Jha

We compare our FocalConvNet with other SOTA on Kvasir-Capsule, a large-scale VCE dataset with 44, 228 frames with 13 classes of different anomalies.

Medical Image Classification

Automatic Polyp Segmentation with Multiple Kernel Dilated Convolution Network

2 code implementations13 Jun 2022 Nikhil Kumar Tomar, Abhishek Srivastava, Ulas Bagci, Debesh Jha

The detection and removal of precancerous polyps through colonoscopy is the primary technique for the prevention of colorectal cancer worldwide.

Dynamic Linear Transformer for 3D Biomedical Image Segmentation

1 code implementation1 Jun 2022 Zheyuan Zhang, Ulas Bagci

Transformer-based neural networks have surpassed promising performance on many biomedical image segmentation tasks due to a better global information modeling from the self-attention mechanism.

Image Segmentation Pancreas Segmentation +3

Transformer based Generative Adversarial Network for Liver Segmentation

1 code implementation21 May 2022 Ugur Demir, Zheyuan Zhang, Bin Wang, Matthew Antalek, Elif Keles, Debesh Jha, Amir Borhani, Daniela Ladner, Ulas Bagci

The premise behind this choice is that the self-attention mechanism of the Transformers allows the network to aggregate the high dimensional feature and provide global information modeling.

Generative Adversarial Network Image Segmentation +3

TGANet: Text-guided attention for improved polyp segmentation

1 code implementation9 May 2022 Nikhil Kumar Tomar, Debesh Jha, Ulas Bagci, Sharib Ali

Even though there are deep learning methods developed for this task, variability in polyp size can impact model training, thereby limiting it to the size attribute of the majority of samples in the training dataset that may provide sub-optimal results to differently sized polyps.

Attribute Medical Image Segmentation +1

Out of Distribution Detection, Generalization, and Robustness Triangle with Maximum Probability Theorem

no code implementations23 Mar 2022 Amir Emad Marvasti, Ehsan Emad Marvasti, Ulas Bagci

Maximum Probability Framework, powered by Maximum Probability Theorem, is a recent theoretical development in artificial intelligence, aiming to formally define probabilistic models, guiding development of objective functions, and regularization of probabilistic models.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

Enhancing Organ at Risk Segmentation with Improved Deep Neural Networks

1 code implementation3 Feb 2022 Ilkin Isler, Curtis Lisle, Justin Rineer, Patrick Kelly, Damla Turgut, Jacob Ricci, Ulas Bagci

Organ at risk (OAR) segmentation is a crucial step for treatment planning and outcome determination in radiotherapy treatments of cancer patients.

Image Segmentation Segmentation +1

Deformable Capsules for Object Detection

no code implementations11 Apr 2021 Rodney LaLonde, Naji Khosravan, Ulas Bagci

In this study, we introduce a new family of capsule networks, deformable capsules (DeformCaps), to address a very important problem in computer vision: object detection.

Computational Efficiency Object +2

Information Bottleneck Attribution for Visual Explanations of Diagnosis and Prognosis

no code implementations7 Apr 2021 Ugur Demir, Ismail Irmakci, Elif Keles, Ahmet Topcu, Ziyue Xu, Concetto Spampinato, Sachin Jambawalikar, Evrim Turkbey, Baris Turkbey, Ulas Bagci

We provide an innovative visual explanation algorithm for general purpose and as an example application, we demonstrate its effectiveness for quantifying lesions in the lungs caused by the Covid-19 with high accuracy and robustness without using dense segmentation labels.

Deep Convolutional Neural Network based Classification of Alzheimer's Disease using MRI data

no code implementations8 Jan 2021 Ali Nawaz, Syed Muhammad Anwar, Rehan Liaqat, Javid Iqbal, Ulas Bagci, Muhammad Majid

Alzheimer's disease (AD) is a progressive and incurable neurodegenerative disease which destroys brain cells and causes loss to patient's memory.

General Classification Multi-class Classification

Variational Capsule Encoder

no code implementations18 Oct 2020 Harish RaviPrakash, Syed Muhammad Anwar, Ulas Bagci

We propose a novel capsule network based variational encoder architecture, called Bayesian capsules (B-Caps), to modulate the mean and standard deviation of the sampling distribution in the latent space.

Image Reconstruction Representation Learning

Capsules for Biomedical Image Segmentation

no code implementations9 Apr 2020 Rodney LaLonde, Ziyue Xu, Ismail Irmakci, Sanjay Jain, Ulas Bagci

The proposed convolutional-deconvolutional capsule network, SegCaps, shows state-of-the-art results while using a fraction of the parameters of popular segmentation networks.

Computed Tomography (CT) Image Segmentation +2

Deep Learning for Musculoskeletal Image Analysis

no code implementations1 Mar 2020 Ismail Irmakci, Syed Muhammad Anwar, Drew A. Torigian, Ulas Bagci

The diagnosis, prognosis, and treatment of patients with musculoskeletal (MSK) disorders require radiology imaging (using computed tomography, magnetic resonance imaging(MRI), and ultrasound) and their precise analysis by expert radiologists.

Classification General Classification

Diagnosing Colorectal Polyps in the Wild with Capsule Networks

1 code implementation10 Jan 2020 Rodney LaLonde, Pujan Kandel, Concetto Spampinato, Michael B. Wallace, Ulas Bagci

In this study, we design a novel capsule network architecture (D-Caps) to improve the viability of optical biopsy of colorectal polyps.

Image Classification

Maximum Probability Theorem: A Framework for Probabilistic Learning

no code implementations21 Oct 2019 Amir Emad Marvasti, Ehsan Emad Marvasti, Ulas Bagci, Hassan Foroosh

Instead, the regularizing effects of assuming prior over parameters is seen through maximizing probabilities of models or according to information theory, minimizing the information content of a model.

A Survey on Recent Advancements for AI Enabled Radiomics in Neuro-Oncology

no code implementations16 Oct 2019 Syed Muhammad Anwar, Tooba Altaf, Khola Rafique, Harish RaviPrakash, Hassan Mohy-ud-Din, Ulas Bagci

Artificial intelligence (AI) enabled radiomics has evolved immensely especially in the field of oncology.

Encoding Visual Attributes in Capsules for Explainable Medical Diagnoses

2 code implementations12 Sep 2019 Rodney LaLonde, Drew Torigian, Ulas Bagci

To the best of our knowledge, this is the first study to investigate capsule networks for making predictions based on radiologist-level interpretable attributes and its applications to medical image diagnosis.

Attribute Lung Cancer Diagnosis +1

Cross-modality Knowledge Transfer for Prostate Segmentation from CT Scans

no code implementations26 Aug 2019 Yucheng Liu, Naji Khosravan, Yulin Liu, Joseph Stember, Jonathan Shoag, Christopher E. Barbieri, Ulas Bagci, Sachin Jambawalikar

By using SynCT images (without segmentation labels) and MR images (with segmentation labels available), we have trained a deep segmentation network for precise delineation of prostate from real CT scans.

Image Segmentation Medical Image Segmentation +4

Weakly Supervised Segmentation by A Deep Geodesic Prior

no code implementations18 Aug 2019 Aliasghar Mortazi, Naji Khosravan, Drew A. Torigian, Sila Kurugol, Ulas Bagci

To alleviate this limitation, in this study, we propose a weakly supervised image segmentation method based on a deep geodesic prior.

Image Segmentation Segmentation +2

Electroencephalography based Classification of Long-term Stress using Psychological Labeling

no code implementations17 Jul 2019 Sanay Muhammad Umar Saeed, Syed Muhammad Anwar, Humaira Khalid, Muhammad Majid, Ulas Bagci

Stress research is a rapidly emerging area in thefield of electroencephalography (EEG) based signal processing. The use of EEG as an objective measure for cost effective andpersonalized stress management becomes important in particularsituations such as the non-availability of mental health facilities. In this study, long-term stress is classified using baseline EEGsignal recordings.

Classification EEG +2

INN: Inflated Neural Networks for IPMN Diagnosis

1 code implementation30 Jun 2019 Rodney LaLonde, Irene Tanner, Katerina Nikiforaki, Georgios Z. Papadakis, Pujan Kandel, Candice W. Bolan, Michael B. Wallace, Ulas Bagci

This is one of the first studies to train an end-to-end deep network on multisequence MRI for IPMN diagnosis, and shows that our proposed novel inflated network architectures are able to handle the extremely limited training data (139 MRI scans), while providing an absolute improvement of $8. 76\%$ in accuracy for diagnosing IPMN over the current state-of-the-art.

PAN: Projective Adversarial Network for Medical Image Segmentation

no code implementations11 Jun 2019 Naji Khosravan, Aliasghar Mortazi, Michael Wallace, Ulas Bagci

Adversarial learning has been proven to be effective for capturing long-range and high-level label consistencies in semantic segmentation.

Image Segmentation Pancreas Segmentation +2

Emotion Classification in Response to Tactile Enhanced Multimedia using Frequency Domain Features of Brain Signals

no code implementations13 May 2019 Aasim Raheel, Muhammad Majid, Syed Muhammad Anwar, Ulas Bagci

The response to this enhanced multimedia content (mulsemedia) is evaluated in terms of the appreciation/emotion by using human brain signals.

EEG Emotion Classification +1

Classification of Perceived Human Stress using Physiological Signals

no code implementations13 May 2019 Aamir Arsalan, Muhammad Majid, Syed Muhammad Anwar, Ulas Bagci

In this paper, we present an experimental study for the classification of perceived human stress using non-invasive physiological signals.

Classification EEG +2

Instance-Level Microtubule Tracking

no code implementations17 Jan 2019 Samira Masoudi, Afsaneh Razi, Cameron H. G. Wright, Jay C. Gatlin, Ulas Bagci

Our experimental results show that the proposed supervised learning algorithm improves the precision for MT instance velocity estimation drastically to 71. 3% from the baseline result (29. 3%).

Hyperparameter Optimization

Artificial Intelligence Assisted Infrastructure Assessment Using Mixed Reality Systems

2 code implementations9 Dec 2018 Enes Karaaslan, Ulas Bagci, F. Necati Catbas

Conventional methods for visual assessment of civil infrastructures have certain limitations, such as subjectivity of the collected data, long inspection time, and high cost of labor.

Management Mixed Reality

Deep Geodesic Learning for Segmentation and Anatomical Landmarking

no code implementations6 Oct 2018 Neslisah Torosdagli, Denise K. Liberton, Payal Verma, Murat Sincan, Janice S. Lee, Ulas Bagci

Specifically, we focus on the challenging problem of mandible segmentation from cone-beam computed tomography (CBCT) scans and identification of 9 anatomical landmarks of the mandible on the geodesic space.

Anatomy Data Augmentation +3

Automatically Designing CNN Architectures for Medical Image Segmentation

no code implementations19 Jul 2018 Aliasghar Mortazi, Ulas Bagci

Deep neural network architectures have traditionally been designed and explored with human expertise in a long-lasting trial-and-error process.

Image Segmentation Medical Image Segmentation +2

End to End Brain Fiber Orientation Estimation using Deep Learning

no code implementations4 Jun 2018 Nandakishore Puttashamachar, Ulas Bagci

Understanding the structure and organization of the tissues facilitates us with a diagnosis method to identify any aberrations and provide acute information on the occurrences of brain ischemia or stroke, the mutation of neurological diseases such as Alzheimer, multiple sclerosis and so on.

S4ND: Single-Shot Single-Scale Lung Nodule Detection

no code implementations6 May 2018 Naji Khosravan, Ulas Bagci

Our approach uses a single feed forward pass of a single network for detection and provides better performance when compared to the current literature.

Lung Nodule Detection object-detection +1

Capsules for Object Segmentation

7 code implementations11 Apr 2018 Rodney LaLonde, Ulas Bagci

A new architecture recently introduced by Sabour et al., referred to as a capsule networks with dynamic routing, has shown great initial results for digit recognition and small image classification.

Object Segmentation +1

Semi-supervised multi-task learning for lung cancer diagnosis

no code implementations17 Feb 2018 Naji Khosravan, Ulas Bagci

This study set out to test the hypothesis that joint learning of false positive (FP) nodule reduction and nodule segmentation can improve the computer aided diagnosis (CAD) systems' performance on both tasks.

Lung Cancer Diagnosis Multi-Task Learning +1

Lung and Pancreatic Tumor Characterization in the Deep Learning Era: Novel Supervised and Unsupervised Learning Approaches

no code implementations10 Jan 2018 Sarfaraz Hussein, Pujan Kandel, Candice W. Bolan, Michael B. Wallace, Ulas Bagci

We evaluate our proposed supervised and unsupervised learning algorithms on two different tumor diagnosis challenges: lung and pancreas with 1018 CT and 171 MRI scans, respectively, and obtain the state-of-the-art sensitivity and specificity results in both problems.

Multi-Task Learning Specificity

How to Fool Radiologists with Generative Adversarial Networks? A Visual Turing Test for Lung Cancer Diagnosis

no code implementations26 Oct 2017 Maria J. M. Chuquicusma, Sarfaraz Hussein, Jeremy Burt, Ulas Bagci

To address this challenge, radiologists need computer aided diagnosis (CAD) systems which can assist in learning discriminative imaging features corresponding to malignant and benign nodules.

Lung Cancer Diagnosis

Deep Multi-Modal Classification of Intraductal Papillary Mucinous Neoplasms (IPMN) with Canonical Correlation Analysis

no code implementations26 Oct 2017 Sarfaraz Hussein, Pujan Kandel, Juan E. Corral, Candice W. Bolan, Michael B. Wallace, Ulas Bagci

Intraductal Papillary Mucinous Neoplasms (IPMNs) are radiographically identifiable precursors to pancreatic cancer; hence, early detection and precise risk assessment of IPMN are vital.

General Classification Multi-modal Classification

Simultaneous Detection and Quantification of Retinal Fluid with Deep Learning

no code implementations17 Aug 2017 Dustin Morley, Hassan Foroosh, Saad Shaikh, Ulas Bagci

We propose a new deep learning approach for automatic detection and segmentation of fluid within retinal OCT images.

Data Augmentation Segmentation

Automatic Response Assessment in Regions of Language Cortex in Epilepsy Patients Using ECoG-based Functional Mapping and Machine Learning

no code implementations26 May 2017 Harish RaviPrakash, Milena Korostenskaja, Eduardo Castillo, Ki Lee, James Baumgartner, Ulas Bagci

In this study, we address the accuracy limitation of the current RTFM signal estimation methods by analyzing the full frequency spectrum of the signal and replacing signal power estimation methods with machine learning algorithms, specifically random forest (RF), as a proof of concept.

BIG-bench Machine Learning Time Series Analysis

CardiacNET: Segmentation of Left Atrium and Proximal Pulmonary Veins from MRI Using Multi-View CNN

no code implementations17 May 2017 Aliasghar Mortazi, Rashed Karim, Kawal Rhode, Jeremy Burt, Ulas Bagci

Anatomical and biophysical modeling of left atrium (LA) and proximal pulmonary veins (PPVs) is important for clinical management of several cardiac diseases.

Cardiac Segmentation Image Segmentation +4

Risk Stratification of Lung Nodules Using 3D CNN-Based Multi-task Learning

no code implementations28 Apr 2017 Sarfaraz Hussein, Kunlin Cao, Qi Song, Ulas Bagci

In order to address the need for a large amount for training data for CNN, we resort to transfer learning to obtain highly discriminative features.

Lung Cancer Diagnosis Multi-Task Learning

TumorNet: Lung Nodule Characterization Using Multi-View Convolutional Neural Network with Gaussian Process

no code implementations2 Mar 2017 Sarfaraz Hussein, Robert Gillies, Kunlin Cao, Qi Song, Ulas Bagci

Characterization of lung nodules as benign or malignant is one of the most important tasks in lung cancer diagnosis, staging and treatment planning.

Data Augmentation Lung Cancer Diagnosis

Robust and fully automated segmentation of mandible from CT scans

no code implementations23 Feb 2017 Neslisah Torosdagli, Denise K. Liberton, Payal Verma, Murat Sincan Janice Lee, Sumanta Pattanaik, Ulas Bagci

Mandible bone segmentation from computed tomography (CT) scans is challenging due to mandible's structural irregularities, complex shape patterns, and lack of contrast in joints.

Computed Tomography (CT) Image Segmentation +2

Context Driven Label Fusion for segmentation of Subcutaneous and Visceral Fat in CT Volumes

no code implementations15 Dec 2015 Sarfaraz Hussein, Aileen Green, Arjun Watane, Georgios Papadakis, Medhat Osman, Ulas Bagci

Quantification of adipose tissue (fat) from computed tomography (CT) scans is conducted mostly through manual or semi-automated image segmentation algorithms with limited efficacy.

Computed Tomography (CT) Image Segmentation +2

Optimally Stabilized PET Image Denoising Using Trilateral Filtering

no code implementations11 Jul 2014 Awais Mansoor, Ulas Bagci, Daniel J. Mollura

Low-resolution and signal-dependent noise distribution in positron emission tomography (PET) images makes denoising process an inevitable step prior to qualitative and quantitative image analysis tasks.

Image Denoising

Near-optimal Keypoint Sampling for Fast Pathological Lung Segmentation

no code implementations11 Jul 2014 Awais Mansoor, Ulas Bagci, Daniel J. Mollura

In this paper, we present a novel approach for fast, accurate, reliable segmentation of pathological lungs from CT scans by combining region-based segmentation method with local descriptor classification that is performed on an optimized sampling grid.

Computed Tomography (CT) General Classification +3

CIDI-Lung-Seg: A Single-Click Annotation Tool for Automatic Delineation of Lungs from CT Scans

no code implementations11 Jul 2014 Awais Mansoor, Ulas Bagci, Brent Foster, Ziyue Xu, Deborah Douglas, Jeffrey M. Solomon, Jayaram K. Udupa, Daniel J. Mollura

Accurate and fast extraction of lung volumes from computed tomography (CT) scans remains in a great demand in the clinical environment because the available methods fail to provide a generic solution due to wide anatomical variations of lungs and existence of pathologies.

Computed Tomography (CT) Image Segmentation +2

Parallel AdaBoost Algorithm for Gabor Wavelet Selection in Face Recognition

no code implementations18 Jul 2009 Ulas Bagci, Li Bai

In this paper, the problem of automatic Gabor wavelet selection for face recognition is tackled by introducing an automatic algorithm based on Parallel AdaBoosting method.

Classification Face Recognition +1

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