no code implementations • 8 Nov 2024 • Lingkai Zhu, Can Deniz Bezek, Orcun Goksel
In recent years, the increasing size of deep learning models and their growing demand for computational resources have drawn significant attention to the practice of pruning neural networks, while aiming to preserve their accuracy.
no code implementations • 8 May 2024 • Alvaro Gomariz, Yusuke Kikuchi, Yun Yvonna Li, Thomas Albrecht, Andreas Maunz, Daniela Ferrara, Huanxiang Lu, Orcun Goksel
We introduce SegCLR, a versatile framework designed to segment volumetric images across different domains, employing supervised and contrastive learning simultaneously to effectively learn from both labeled and unlabeled data.
no code implementations • 1 Sep 2023 • Can Deniz Bezek, Maxim Haas, Richard Rau, Orcun Goksel
This operates based on a forward model that relates the sought local values of SoS to observed speckle shifts, for which the associated image reconstruction inverse problem is solved.
no code implementations • 21 Feb 2023 • Lin Zhang, Tiziano Portenier, Orcun Goksel
We introduce a contrastive learning framework for generating photorealistic images from simulated label maps, by learning from unpaired sets of both.
no code implementations • 2 Feb 2023 • Kevin Thandiackal, Luigi Piccinelli, Pushpak Pati, Orcun Goksel
Methods for unsupervised domain adaptation (UDA) help to improve the performance of deep neural networks on unseen domains without any labeled data.
no code implementations • 7 Jan 2023 • Pushpak Pati, Guillaume Jaume, Zeineb Ayadi, Kevin Thandiackal, Behzad Bozorgtabar, Maria Gabrani, Orcun Goksel
These pseudo labels are then used to train a node classification head for WSI segmentation.
no code implementations • 3 Jan 2023 • Boqi Chen, Kevin Thandiackal, Pushpak Pati, Orcun Goksel
In contrast to single-step unsupervised domain adaptation (UDA), continual adaptation to a sequence of domains enables leveraging and consolidation of information from multiple domains.
no code implementations • 26 Apr 2022 • Kevin Thandiackal, Boqi Chen, Pushpak Pati, Guillaume Jaume, Drew F. K. Williamson, Maria Gabrani, Orcun Goksel
Multiple Instance Learning (MIL) methods have become increasingly popular for classifying giga-pixel sized Whole-Slide Images (WSIs) in digital pathology.
no code implementations • 7 Mar 2022 • Alvaro Gomariz, Huanxiang Lu, Yun Yvonna Li, Thomas Albrecht, Andreas Maunz, Fethallah Benmansour, Alessandra M. Valcarcel, Jennifer Luu, Daniela Ferrara, Orcun Goksel
We evaluate our methods for domain adaptation from a (labeled) source domain to an (unlabeled) target domain, each containing images acquired with different acquisition devices.
no code implementations • 24 Sep 2021 • Xenia Augustin, Lin Zhang, Orcun Goksel
We demonstrate the effectiveness of our proposed method for tomographic SoS reconstruction.
no code implementations • 9 Jun 2021 • Kevin Thandiackal, Tiziano Portenier, Andrea Giovannini, Maria Gabrani, Orcun Goksel
In this work, we propose Genifer (GENeratIve FEature-driven image Replay), where a generative model is trained to replay images that must induce the same hidden features as real samples when they are passed through the classifier.
no code implementations • 19 Mar 2021 • Hossein Khodadadi, Orcun Goksel, Sabine Kling
Displacement estimation in optical coherence tomography (OCT) imaging is relevant for several potential applications, e. g. for optical coherence elastography (OCE) for corneal biomechanical characterization.
no code implementations • 9 Mar 2021 • Devavrat Tomar, Lin Zhang, Tiziano Portenier, Orcun Goksel
Interactive simulation of ultrasound imaging greatly facilitates sonography training.
2 code implementations • 4 Mar 2021 • Valentin Anklin, Pushpak Pati, Guillaume Jaume, Behzad Bozorgtabar, Antonio Foncubierta-Rodríguez, Jean-Philippe Thiran, Mathilde Sibony, Maria Gabrani, Orcun Goksel
Thus, weakly-supervised semantic segmentation techniques are proposed to utilize weak supervision that is cheaper and quicker to acquire.
no code implementations • 23 Feb 2021 • Alvaro Gomariz, Tiziano Portenier, César Nombela-Arrieta, Orcun Goksel
We herein propose a deep learning-based cell detection framework that can operate on large microscopy images and outputs desired probabilistic predictions by (i) integrating Bayesian techniques for the regression of uncertainty-aware density maps, where peak detection can be applied to generate cell proposals, and (ii) learning a mapping from the numerous proposals to a probabilistic space that is calibrated, i. e. accurately represents the chances of a successful prediction.
4 code implementations • 22 Feb 2021 • Pushpak Pati, Guillaume Jaume, Antonio Foncubierta, Florinda Feroce, Anna Maria Anniciello, Giosuè Scognamiglio, Nadia Brancati, Maryse Fiche, Estelle Dubruc, Daniel Riccio, Maurizio Di Bonito, Giuseppe De Pietro, Gerardo Botti, Jean-Philippe Thiran, Maria Frucci, Orcun Goksel, Maria Gabrani
We propose a novel multi-level hierarchical entity-graph representation of tissue specimens to model hierarchical compositions that encode histological entities as well as their intra- and inter-entity level interactions.
no code implementations • 27 Jan 2021 • Alvaro Gomariz, Raphael Egli, Tiziano Portenier, César Nombela-Arrieta, Orcun Goksel
However, for combinations that do not exist in a labeled training dataset, one cannot have any estimation of potential segmentation quality if that combination is encountered during inference.
no code implementations • 20 Jan 2021 • Lin Zhang, Tiziano Portenier, Orcun Goksel
Given the high level of expertise required for navigation and interpretation of ultrasound images, computational simulations can facilitate the training of such skills in virtual reality.
no code implementations • 28 Dec 2020 • Fabien Péan, Philippe Favre, Orcun Goksel
Furthermore, although the PMA acts asynchronously to the subscapularis before the transfer, its patterns of activation change significantly after the transfer.
Medical Physics Computational Engineering, Finance, and Science Quantitative Methods
no code implementations • 17 Dec 2020 • Fabien Péan, Philippe Favre, Orcun Goksel
The model was validated with respect to in-vivo glenohumeral joint reaction force (JRF) measurements, and also compared to existing clinical and biomechanical data.
Medical Physics Quantitative Methods
3 code implementations • CVPR 2021 • Guillaume Jaume, Pushpak Pati, Behzad Bozorgtabar, Antonio Foncubierta-Rodríguez, Florinda Feroce, Anna Maria Anniciello, Tilman Rau, Jean-Philippe Thiran, Maria Gabrani, Orcun Goksel
However, popular deep learning methods and explainability techniques (explainers) based on pixel-wise processing disregard biological entities' notion, thus complicating comprehension by pathologists.
no code implementations • 27 Aug 2020 • Alvaro Gomariz, Tiziano Portenier, Patrick M. Helbling, Stephan Isringhausen, Ute Suessbier, César Nombela-Arrieta, Orcun Goksel
Quantitative characterization of structures in acquired images often relies on automatic image analysis methods.
1 code implementation • 13 Jul 2020 • Emanuel Joos, Fabien Péan, Orcun Goksel
With muscle activations for movements often being highly redundant, nonlinear, and time dependent, machine learning can provide a solution for their modeling and control for anatomy-specific musculoskeletal simulations.
no code implementations • 1 Jul 2020 • Guillaume Jaume, Pushpak Pati, Antonio Foncubierta-Rodriguez, Florinda Feroce, Giosue Scognamiglio, Anna Maria Anniciello, Jean-Philippe Thiran, Orcun Goksel, Maria Gabrani
Explainability of machine learning (ML) techniques in digital pathology (DP) is of great significance to facilitate their wide adoption in clinics.
no code implementations • 1 Jul 2020 • Pushpak Pati, Guillaume Jaume, Lauren Alisha Fernandes, Antonio Foncubierta, Florinda Feroce, Anna Maria Anniciello, Giosue Scognamiglio, Nadia Brancati, Daniel Riccio, Maurizio Do Bonito, Giuseppe De Pietro, Gerardo Botti, Orcun Goksel, Jean-Philippe Thiran, Maria Frucci, Maria Gabrani
Further, a hierarchical graph neural network (HACT-Net) is proposed to efficiently map the HACT representations to histopathological breast cancer subtypes.
no code implementations • NeurIPS 2020 • Tiziano Portenier, Siavash Bigdeli, Orcun Goksel
Inspired by recent advances in natural texture synthesis, we train deep neural models to generate textures by non-linearly combining learned noise frequencies.
no code implementations • 25 Jun 2020 • Melanie Bernhardt, Valery Vishnevskiy, Richard Rau, Orcun Goksel
In this work, we present for the first time a VN solution for a pulse-echo SoS image reconstruction problem using diverging waves with conventional transducers and single-sided tissue access.
no code implementations • 18 Jun 2020 • Lin Zhang, Tiziano Portenier, Christoph Paulus, Orcun Goksel
To incorporate anatomical information potentially lost in low quality images, we additionally provide segmentation maps to image translation.
no code implementations • 17 Jun 2020 • Lin Zhang, Valery Vishnevskiy, Orcun Goksel
Simulation-based ultrasound training can be an essential educational tool.
no code implementations • 17 Jun 2020 • Pushpak Pati, Antonio Foncubierta-Rodriguez, Orcun Goksel, Maria Gabrani
Our framework significantly improves the detection with small training data and achieves on par or superior performance compared to state-of-the-art methods for using the entire training data.
no code implementations • 7 Jan 2020 • Firat Ozdemir, Christine Tanner, Orcun Goksel
Bone surface delineation in ultrasound is of interest due to its potential in diagnosis, surgical planning, and post-operative follow-up in orthopedics, as well as the potential of using bones as anatomical landmarks in surgical navigation.
no code implementations • 22 Dec 2019 • Firat Ozdemir, Zixuan Peng, Philipp Fuernstahl, Christine Tanner, Orcun Goksel
In an active learning framework of selecting informed samples for manual labeling, expert clinician time for manual annotation can be optimally utilized, enabling the establishment of large labeled datasets for machine learning.
no code implementations • 13 Jun 2019 • Valery Vishnevskiy, Richard Rau, Orcun Goksel
Tomographic image reconstruction is relevant for many medical imaging modalities including X-ray, ultrasound (US) computed tomography (CT) and photoacoustics, for which the access to full angular range tomographic projections might be not available in clinical practice due to physical or time constraints.
no code implementations • 17 Mar 2019 • Yuanhao Gong, Orcun Goksel
In this paper, we introduce weighted mean curvature (WMC) as a novel image prior and present an efficient computation scheme for its discretization in practical image processing applications.
no code implementations • 1 Feb 2019 • Andrawes Al Bahou, Christine Tanner, Orcun Goksel
We demonstrate robust reconstruction results, invariant to US viewing and imaging settings such as imaging direction and center frequency.
no code implementations • 23 Jan 2019 • Alvaro Gomariz, Weiye Li, Ece Ozkan, Christine Tanner, Orcun Goksel
Image-guided radiation therapy can benefit from accurate motion tracking by ultrasound imaging, in order to minimize treatment margins and radiate moving anatomical targets, e. g., due to breathing.
1 code implementation • 12 Nov 2018 • Firat Ozdemir, Orcun Goksel
We propose a class-incremental segmentation framework for extending a deep network trained for some anatomical structure to yet another structure using a small incremental annotation set.
no code implementations • 22 Oct 2018 • Lin Zhang, Valery Vishnevskiy, Andras Jakab, Orcun Goksel
Intravoxel incoherent motion (IVIM) imaging allows contrast-agent free in vivo perfusion quantification with magnetic resonance imaging (MRI).
no code implementations • 19 Jul 2018 • Christine Tanner, Firat Ozdemir, Romy Profanter, Valeriy Vishnevsky, Ender Konukoglu, Orcun Goksel
Performance for the abdominal region was similar to that of CT-MRI NMI registration (77. 4 vs. 78. 8%) when using 3D synthesizing MRIs (12 slices) and medium sized receptive fields for the discriminator.
no code implementations • 19 Jul 2018 • Valery Vishnevskiy, Sergio J Sanabria, Orcun Goksel
Speed-of-sound is a biomechanical property for quantitative tissue differentiation, with great potential as a new ultrasound-based image modality.
no code implementations • 18 Jul 2018 • Firat Ozdemir, Zixuan Peng, Christine Tanner, Philipp Fuernstahl, Orcun Goksel
Segmentation is essential for medical image analysis tasks such as intervention planning, therapy guidance, diagnosis, treatment decisions.
no code implementations • 1 Jun 2018 • Firat Ozdemir, Philipp Fuernstahl, Orcun Goksel
Deep learning has been widely accepted as a promising solution for medical image segmentation, given a sufficiently large representative dataset of images with corresponding annotations.
no code implementations • 14 Nov 2016 • Ece Ozkan, Gemma Roig, Orcun Goksel, Xavier Boix
We show that the algorithm to extract diverse M -solutions from a Conditional Random Field (called divMbest [1]) takes exactly the form of a Herding procedure [2], i. e. a deterministic dynamical system that produces a sequence of hypotheses that respect a set of observed moment constraints.