Search Results for author: Ghassan Hamarneh

Found 54 papers, 20 papers with code

Radial Basis Feature Transformation to Arm CNNs Against Adversarial Attacks

no code implementations ICLR 2019 Saeid Asgari Taghanaki, Shekoofeh Azizi, Ghassan Hamarneh

The linear and non-flexible nature of deep convolutional models makes them vulnerable to carefully crafted adversarial perturbations.

Image Classification

Representing Anatomical Trees by Denoising Diffusion of Implicit Neural Fields

1 code implementation13 Mar 2024 Ashish Sinha, Ghassan Hamarneh

We propose a novel approach for representing anatomical trees using INR, while also capturing the distribution of a set of trees via denoising diffusion in the space of INRs.

Denoising

AFreeCA: Annotation-Free Counting for All

no code implementations7 Mar 2024 Adriano D'Alessandro, Ali Mahdavi-Amiri, Ghassan Hamarneh

Consequently, we can generate counting data for any type of object and count them in an unsupervised manner.

Object Object Counting

Investigating the Quality of DermaMNIST and Fitzpatrick17k Dermatological Image Datasets

1 code implementation25 Jan 2024 Kumar Abhishek, Aditi Jain, Ghassan Hamarneh

The remarkable progress of deep learning in dermatological tasks has brought us closer to achieving diagnostic accuracies comparable to those of human experts.

SYRAC: Synthesize, Rank, and Count

1 code implementation2 Oct 2023 Adriano D'Alessandro, Ali Mahdavi-Amiri, Ghassan Hamarneh

To address this, we use latent diffusion models to create two types of synthetic data: one by removing pedestrians from real images, which generates ranked image pairs with a weak but reliable object quantity signal, and the other by generating synthetic images with a predetermined number of objects, offering a strong but noisy counting signal.

Crowd Counting

SLiMe: Segment Like Me

1 code implementation6 Sep 2023 Aliasghar Khani, Saeid Asgari Taghanaki, Aditya Sanghi, Ali Mahdavi Amiri, Ghassan Hamarneh

Then, using the extracted attention maps, the text embeddings of Stable Diffusion are optimized such that, each of them, learn about a single segmented region from the training image.

3D Shape Generation Segmentation

AI-based analysis of super-resolution microscopy: Biological discovery in the absence of ground truth

no code implementations26 May 2023 Ivan R. Nabi, Ben Cardoen, Ismail M. Khater, Guang Gao, Timothy H. Wong, Ghassan Hamarneh

The nanoscale resolution of super-resolution microscopy has now enabled the use of fluorescent based molecular localization tools to study whole cell structural biology.

Super-Resolution Weakly-supervised Learning

The XAI Alignment Problem: Rethinking How Should We Evaluate Human-Centered AI Explainability Techniques

no code implementations30 Mar 2023 Weina Jin, Xiaoxiao Li, Ghassan Hamarneh

Optimizing XAI for plausibility regardless of the model decision correctness also jeopardizes model trustworthiness, because doing so breaks an important assumption in human-human explanation that plausible explanations typically imply correct decisions, and vice versa; and violating this assumption eventually leads to either undertrust or overtrust of AI models.

Explainable artificial intelligence Explainable Artificial Intelligence (XAI) +1

Invisible Users: Uncovering End-Users' Requirements for Explainable AI via Explanation Forms and Goals

1 code implementation10 Feb 2023 Weina Jin, Jianyu Fan, Diane Gromala, Philippe Pasquier, Ghassan Hamarneh

The EUCA study findings, the identified explanation forms and goals for technical specification, and the EUCA study dataset support the design and evaluation of end-user-centered XAI techniques for accessible, safe, and accountable AI.

Autonomous Driving Explainable artificial intelligence +1

MaskTune: Mitigating Spurious Correlations by Forcing to Explore

1 code implementation30 Sep 2022 Saeid Asgari Taghanaki, Aliasghar Khani, Fereshte Khani, Ali Gholami, Linh Tran, Ali Mahdavi-Amiri, Ghassan Hamarneh

A fundamental challenge of over-parameterized deep learning models is learning meaningful data representations that yield good performance on a downstream task without over-fitting spurious input features.

CIRCLe: Color Invariant Representation Learning for Unbiased Classification of Skin Lesions

1 code implementation29 Aug 2022 Arezou Pakzad, Kumar Abhishek, Ghassan Hamarneh

While deep learning based approaches have demonstrated expert-level performance in dermatological diagnosis tasks, they have also been shown to exhibit biases toward certain demographic attributes, particularly skin types (e. g., light versus dark), a fairness concern that must be addressed.

16k Fairness +3

Transcending XAI Algorithm Boundaries through End-User-Inspired Design

no code implementations18 Aug 2022 Weina Jin, Jianyu Fan, Diane Gromala, Philippe Pasquier, Xiaoxiao Li, Ghassan Hamarneh

The boundaries of existing explainable artificial intelligence (XAI) algorithms are confined to problems grounded in technical users' demand for explainability.

Autonomous Driving counterfactual +3

A Survey on Deep Learning for Skin Lesion Segmentation

1 code implementation1 Jun 2022 Zahra Mirikharaji, Kumar Abhishek, Alceu Bissoto, Catarina Barata, Sandra Avila, Eduardo Valle, M. Emre Celebi, Ghassan Hamarneh

We analyze these works along several dimensions, including input data (datasets, preprocessing, and synthetic data generation), model design (architecture, modules, and losses), and evaluation aspects (data annotation requirements and segmentation performance).

Lesion Segmentation Segmentation +2

Multi-Sample $ζ$-mixup: Richer, More Realistic Synthetic Samples from a $p$-Series Interpolant

no code implementations7 Apr 2022 Kumar Abhishek, Colin J. Brown, Ghassan Hamarneh

Modern deep learning training procedures rely on model regularization techniques such as data augmentation methods, which generate training samples that increase the diversity of data and richness of label information.

Data Augmentation Image Classification +1

Deep Multimodal Guidance for Medical Image Classification

1 code implementation10 Mar 2022 Mayur Mallya, Ghassan Hamarneh

Furthermore, in the case of brain tumor classification, our method outperforms the model trained on the superior modality while producing comparable results to the model that uses both modalities during inference.

Image Classification Lesion Classification +2

Guidelines and Evaluation of Clinical Explainable AI in Medical Image Analysis

1 code implementation16 Feb 2022 Weina Jin, Xiaoxiao Li, Mostafa Fatehi, Ghassan Hamarneh

Following the guidelines, we conducted a systematic evaluation on a novel problem of multi-modal medical image explanation with two clinical tasks, and proposed new evaluation metrics accordingly.

Computational Efficiency Explainable artificial intelligence +1

BoosterNet: Improving Domain Generalization of Deep Neural Nets Using Culpability-Ranked Features

no code implementations CVPR 2022 Nourhan Bayasi, Ghassan Hamarneh, Rafeef Garbi

Deep learning (DL) models trained to minimize empirical risk on a single domain often fail to generalize when applied to other domains.

Domain Generalization

Learning-to-Count by Learning-to-Rank: Weakly Supervised Object Counting & Localization Using Only Pairwise Image Rankings

no code implementations29 Sep 2021 Adriano C. D'Alessandro, Ali Mahdavi Amiri, Ghassan Hamarneh

Object counting and localization in dense scenes is a challenging class of image analysis problems that typically requires labour intensive annotations to learn to solve.

Learning-To-Rank Object +1

Skin3D: Detection and Longitudinal Tracking of Pigmented Skin Lesions in 3D Total-Body Textured Meshes

1 code implementation2 May 2021 Mengliu Zhao, Jeremy Kawahara, Kumar Abhishek, Sajjad Shamanian, Ghassan Hamarneh

Our lesion tracking algorithm achieves an average matching accuracy of 88% on a set of detected corresponding pairs of prominent lesions of subjects imaged in different poses, and an average longitudinal accuracy of 71% when encompassing additional errors due to lesion detection.

Lesion Detection

EUCA: the End-User-Centered Explainable AI Framework

1 code implementation4 Feb 2021 Weina Jin, Jianyu Fan, Diane Gromala, Philippe Pasquier, Ghassan Hamarneh

The ability to explain decisions to end-users is a necessity to deploy AI as critical decision support.

Decision Making Explainable artificial intelligence Human-Computer Interaction

D-LEMA: Deep Learning Ensembles from Multiple Annotations -- Application to Skin Lesion Segmentation

no code implementations14 Dec 2020 Zahra Mirikharaji, Kumar Abhishek, Saeed Izadi, Ghassan Hamarneh

To this end, we propose an ensemble of Bayesian fully convolutional networks (FCNs) for the segmentation task by considering two major factors in the aggregation of multiple ground truth annotations: (1) handling contradictory annotations in the training data originating from inter-annotator disagreements and (2) improving confidence calibration through the fusion of base models' predictions.

Image Segmentation Lesion Segmentation +2

Matthews Correlation Coefficient Loss for Deep Convolutional Networks: Application to Skin Lesion Segmentation

1 code implementation26 Oct 2020 Kumar Abhishek, Ghassan Hamarneh

The segmentation of skin lesions is a crucial task in clinical decision support systems for the computer aided diagnosis of skin lesions.

Lesion Segmentation Segmentation +1

Patch-based Non-Local Bayesian Networks for Blind Confocal Microscopy Denoising

no code implementations25 Mar 2020 Saeed Izadi, Ghassan Hamarneh

The performance of our proposed method is evaluated on confocal microscopy images with real noise Poisson-Gaussian noise.

Denoising

Illumination-based Transformations Improve Skin Lesion Segmentation in Dermoscopic Images

1 code implementation23 Mar 2020 Kumar Abhishek, Ghassan Hamarneh, Mark S. Drew

The semantic segmentation of skin lesions is an important and common initial task in the computer aided diagnosis of dermoscopic images.

Lesion Segmentation Segmentation +2

Deep Learning for Biomedical Image Reconstruction: A Survey

no code implementations26 Feb 2020 Hanene Ben Yedder, Ben Cardoen, Ghassan Hamarneh

Medical imaging is an invaluable resource in medicine as it enables to peer inside the human body and provides scientists and physicians with a wealth of information indispensable for understanding, modelling, diagnosis, and treatment of diseases.

Image Reconstruction

Artificial Intelligence in Glioma Imaging: Challenges and Advances

no code implementations28 Nov 2019 Weina Jin, Mostafa Fatehi, Kumar Abhishek, Mayur Mallya, Brian Toyota, Ghassan Hamarneh

We believe that these technical approaches will facilitate the development of a fully-functional AI tool in the clinical care of patients with gliomas.

Computed Tomography (CT) Image Imputation +2

Signed Input Regularization

no code implementations16 Nov 2019 Saeid Asgari Taghanaki, Kumar Abhishek, Ghassan Hamarneh

To test the effectiveness of the proposed idea and compare it with other competing methods, we design several test scenarios, such as classification performance, uncertainty, out-of-distribution, and robustness analyses.

Data Augmentation

Deep Learning Models for Digital Pathology

no code implementations27 Oct 2019 Aïcha BenTaieb, Ghassan Hamarneh

We then discuss the challenges facing the validation and integration of such deep learning-based computational systems in clinical workflow and reflect on future opportunities for histopathology derived image measurements and better predictive modeling.

Scanner Invariant Multiple Sclerosis Lesion Segmentation from MRI

no code implementations22 Oct 2019 Shahab Aslani, Vittorio Murino, Michael Dayan, Roger Tam, Diego Sona, Ghassan Hamarneh

This paper presents a simple and effective generalization method for magnetic resonance imaging (MRI) segmentation when data is collected from multiple MRI scanning sites and as a consequence is affected by (site-)domain shifts.

Lesion Segmentation MRI segmentation +1

Deep Semantic Segmentation of Natural and Medical Images: A Review

no code implementations16 Oct 2019 Saeid Asgari Taghanaki, Kumar Abhishek, Joseph Paul Cohen, Julien Cohen-Adad, Ghassan Hamarneh

The semantic image segmentation task consists of classifying each pixel of an image into an instance, where each instance corresponds to a class.

Image Segmentation Medical Image Segmentation +3

WhiteNNer-Blind Image Denoising via Noise Whiteness Priors

no code implementations8 Aug 2019 Saeed Izadi, Zahra Mirikharaji, Mengliu Zhao, Ghassan Hamarneh

Specifically, by using total variation and piecewise constancy priors along with noise whiteness priors such as auto-correlation and stationary losses, our network learns to decouple an input noisy image into the underlying signal and noise components.

Image Denoising SSIM

Image Super Resolution via Bilinear Pooling: Application to Confocal Endomicroscopy

no code implementations18 Jun 2019 Saeed Izadi, Darren Sutton, Ghassan Hamarneh

We compare the efficacy of our method to 11 other existing single image super resolution techniques that compensate for the reduction in image quality caused by the necessity of endomicroscope miniaturization.

Image Super-Resolution SSIM

Learning to Segment Skin Lesions from Noisy Annotations

no code implementations10 Jun 2019 Zahra Mirikharaji, Yiqi Yan, Ghassan Hamarneh

Deep convolutional neural networks have driven substantial advancements in the automatic understanding of images.

Image Segmentation Medical Image Segmentation +3

Visual Diagnosis of Dermatological Disorders: Human and Machine Performance

no code implementations4 Jun 2019 Jeremy Kawahara, Ghassan Hamarneh

Skin conditions are a global health concern, ranking the fourth highest cause of nonfatal disease burden when measured as years lost due to disability.

Lesion Classification Skin Lesion Classification

Missing MRI Pulse Sequence Synthesis using Multi-Modal Generative Adversarial Network

no code implementations27 Apr 2019 Anmol Sharma, Ghassan Hamarneh

The ability to visualize tissue in varied contrasts in the form of MR pulse sequences in a single scan provides valuable insights to physicians, as well as enabling automated systems performing downstream analysis.

Generative Adversarial Network

Improved Inference via Deep Input Transfer

no code implementations4 Apr 2019 Saied Asgari Taghanaki, Kumar Abhishek, Ghassan Hamarneh

Although numerous improvements have been made in the field of image segmentation using convolutional neural networks, the majority of these improvements rely on training with larger datasets, model architecture modifications, novel loss functions, and better optimizers.

Image Segmentation Lesion Segmentation +3

InfoMask: Masked Variational Latent Representation to Localize Chest Disease

no code implementations28 Mar 2019 Saeid Asgari Taghanaki, Mohammad Havaei, Tess Berthier, Francis Dutil, Lisa Di Jorio, Ghassan Hamarneh, Yoshua Bengio

The scarcity of richly annotated medical images is limiting supervised deep learning based solutions to medical image analysis tasks, such as localizing discriminatory radiomic disease signatures.

Multiple Instance Learning

Vulnerability Analysis of Chest X-Ray Image Classification Against Adversarial Attacks

no code implementations9 Jul 2018 Saeid Asgari Taghanaki, Arkadeep Das, Ghassan Hamarneh

Recently, there have been several successful deep learning approaches for automatically classifying chest X-ray images into different disease categories.

Classification General Classification +1

Can Deep Learning Relax Endomicroscopy Hardware Miniaturization Requirements?

no code implementations21 Jun 2018 Saeed Izadi, Kathleen P. Moriarty, Ghassan Hamarneh

In this work, we demonstrate that software-based techniques can be used to recover lost information due to endomicroscopy hardware miniaturization and reconstruct images of higher resolution.

Super-Resolution

Select, Attend, and Transfer: Light, Learnable Skip Connections

no code implementations14 Apr 2018 Saeid Asgari Taghanaki, Aicha Bentaieb, Anmol Sharma, S. Kevin Zhou, Yefeng Zheng, Bogdan Georgescu, Puneet Sharma, Sasa Grbic, Zhoubing Xu, Dorin Comaniciu, Ghassan Hamarneh

Skip connections in deep networks have improved both segmentation and classification performance by facilitating the training of deeper network architectures, and reducing the risks for vanishing gradients.

Segmentation

Fully Convolutional Neural Networks to Detect Clinical Dermoscopic Features

no code implementations14 Mar 2017 Jeremy Kawahara, Ghassan Hamarneh

We reformulate the task of classifying clinical dermoscopic features within superpixels as a segmentation problem, and propose a fully convolutional neural network to detect clinical dermoscopic features from dermoscopy skin lesion images.

General Classification Image Classification +2

Machine Learning on Human Connectome Data from MRI

no code implementations26 Nov 2016 Colin J Brown, Ghassan Hamarneh

The purpose of this work is to review the literature on the topic of applying machine learning models to MRI-based connectome data.

BIG-bench Machine Learning feature selection

Adaptable Precomputation for Random Walker Image Segmentation and Registration

no code implementations14 Jul 2016 Shawn Andrews, Ghassan Hamarneh

Specifically, we dynamically determine the number of eigenvectors needed for a desired accuracy based on user input, and derive update equations for the eigenvectors when the edge weights or topology of the image graph are changed.

Image Segmentation Semantic Segmentation

Incorporating prior knowledge in medical image segmentation: a survey

no code implementations5 Jul 2016 Masoud S. Nosrati, Ghassan Hamarneh

Medical image segmentation, the task of partitioning an image into meaningful parts, is an important step toward automating medical image analysis and is at the crux of a variety of medical imaging applications, such as computer aided diagnosis, therapy planning and delivery, and computer aided interventions.

Image Segmentation Medical Image Segmentation +2

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