Search Results for author: Albert C. S. Chung

Found 18 papers, 6 papers with code

SETGen: Scalable and Efficient Template Generation Framework for Groupwise Medical Image Registration

no code implementations10 Nov 2022 Ziyi He, Albert C. S. Chung

Secondly, we explore a siamese training scheme that feeds two images to the shared-weight twin networks and compares the distances between inputs and the generated template to prompt the template to be close to the implicit center.

Image Registration Medical Image Registration

Robust Image Registration with Absent Correspondences in Pre-operative and Follow-up Brain MRI Scans of Diffuse Glioma Patients

no code implementations20 Oct 2022 Tony C. W. Mok, Albert C. S. Chung

Registration of pre-operative and follow-up brain MRI scans is challenging due to the large variation of tissue appearance and missing correspondences in tumour recurrence regions caused by tumour mass effect.

Image Registration

Unsupervised Deformable Image Registration with Absent Correspondences in Pre-operative and Post-Recurrence Brain Tumor MRI Scans

1 code implementation8 Jun 2022 Tony C. W. Mok, Albert C. S. Chung

Registration of pre-operative and post-recurrence brain images is often needed to evaluate the effectiveness of brain gliomas treatment.

Image Registration

Affine Medical Image Registration with Coarse-to-Fine Vision Transformer

1 code implementation CVPR 2022 Tony C. W. Mok, Albert C. S. Chung

Comprehensive results demonstrate that our method is superior to the existing CNNs-based affine registration methods in terms of registration accuracy, robustness and generalizability while preserving the runtime advantage of the learning-based methods.

Image Registration Medical Image Registration +1

The Brain Tumor Sequence Registration (BraTS-Reg) Challenge: Establishing Correspondence Between Pre-Operative and Follow-up MRI Scans of Diffuse Glioma Patients

no code implementations13 Dec 2021 Bhakti Baheti, Satrajit Chakrabarty, Hamed Akbari, Michel Bilello, Benedikt Wiestler, Julian Schwarting, Evan Calabrese, Jeffrey Rudie, Syed Abidi, Mina Mousa, Javier Villanueva-Meyer, Brandon K. K. Fields, Florian Kofler, Russell Takeshi Shinohara, Juan Eugenio Iglesias, Tony C. W. Mok, Albert C. S. Chung, Marek Wodzinski, Artur Jurgas, Niccolo Marini, Manfredo Atzori, Henning Muller, Christoph Grobroehmer, Hanna Siebert, Lasse Hansen, Mattias P. Heinrich, Luca Canalini, Jan Klein, Annika Gerken, Stefan Heldmann, Alessa Hering, Horst K. Hahn, Mingyuan Meng, Lei Bi, Dagan Feng, Jinman Kim, Ramy A. Zeineldin, Mohamed E. Karar, Franziska Mathis-Ullrich, Oliver Burgert, Javid Abderezaei, Aymeric Pionteck, Agamdeep Chopra, Mehmet Kurt, Kewei Yan, Yonghong Yan, Zhe Tang, Jianqiang Ma, Sahar Almahfouz Nasser, Nikhil Cherian Kurian, Mohit Meena, Saqib Shamsi, Amit Sethi, Nicholas J. Tustison, Brian B. Avants, Philip Cook, James C. Gee, Lin Tian, Hastings Greer, Marc Niethammer, Andrew Hoopes, Malte Hoffmann, Adrian V. Dalca, Stergios Christodoulidis, Theo Estiene, Maria Vakalopoulou, Nikos Paragios, Daniel S. Marcus, Christos Davatzikos, Aristeidis Sotiras, Bjoern Menze, Spyridon Bakas, Diana Waldmannstetter

Registration of longitudinal brain MRI scans containing pathologies is challenging due to dramatic changes in tissue appearance.

Descriptive Image Registration +1

Conditional Deformable Image Registration with Convolutional Neural Network

3 code implementations23 Jun 2021 Tony C. W. Mok, Albert C. S. Chung

In this paper, we propose a conditional image registration method and a new self-supervised learning paradigm for deep deformable image registration.

Image Registration Self-Supervised Learning

Edge-variational Graph Convolutional Networks for Uncertainty-aware Disease Prediction

no code implementations6 Sep 2020 Yongxiang Huang, Albert C. S. Chung

There is a rising need for computational models that can complementarily leverage data of different modalities while investigating associations between subjects for population-based disease analysis.

Disease Prediction Representation Learning

Large Deformation Diffeomorphic Image Registration with Laplacian Pyramid Networks

3 code implementations29 Jun 2020 Tony C. W. Mok, Albert C. S. Chung

Deep learning-based methods have recently demonstrated promising results in deformable image registration for a wide range of medical image analysis tasks.

Image Registration

Fast Symmetric Diffeomorphic Image Registration with Convolutional Neural Networks

1 code implementation CVPR 2020 Tony C. W. Mok, Albert C. S. Chung

However, these approaches often ignore the topology preservation of the transformation and the smoothness of the transformation which is enforced by a global smoothing energy function alone.

Image Registration

CELNet: Evidence Localization for Pathology Images using Weakly Supervised Learning

no code implementations16 Sep 2019 Yongxiang Huang, Albert C. S. Chung

Despite deep convolutional neural networks boost the performance of image classification and segmentation in digital pathology analysis, they are usually weak in interpretability for clinical applications or require heavy annotations to achieve object localization.

Image Classification Object Localization +1

A Fine-Grain Error Map Prediction and Segmentation Quality Assessment Framework for Whole-Heart Segmentation

no code implementations29 Jul 2019 Rongzhao Zhang, Albert C. S. Chung

In this work, we attempt to address the pixel-wise error map prediction problem and the per-case mask quality assessment problem using a unified deep learning (DL) framework.

Heart Segmentation Segmentation

A Unified Mammogram Analysis Method via Hybrid Deep Supervision

1 code implementation31 Aug 2018 Rongzhao Zhang, Han Zhang, Albert C. S. Chung

In this work, we present a unified mammogram analysis framework for both whole-mammogram classification and segmentation.

Classification General Classification +3

Deep supervision with additional labels for retinal vessel segmentation task

no code implementations6 Jun 2018 Yishuo Zhang, Albert C. S. Chung

In this way, the network will pay more attention to the boundary areas of vessels and achieve a better performance, especially in tiny vessels detecting.

Retinal Vessel Segmentation

Learning Data Augmentation for Brain Tumor Segmentation with Coarse-to-Fine Generative Adversarial Networks

no code implementations29 May 2018 Tony C. W. Mok, Albert C. S. Chung

While it is often easy for researchers to use data augmentation to expand the size of training sets, constructing and generating generic augmented data that is able to teach the network the desired invariance and robustness properties using traditional data augmentation techniques is challenging in practice.

Brain Tumor Segmentation Data Augmentation +1

3D Randomized Connection Network with Graph-based Label Inference

no code implementations11 Nov 2017 Siqi Bao, Pei Wang, Tony C. W. Mok, Albert C. S. Chung

In this paper, a novel 3D deep learning network is proposed for brain MR image segmentation with randomized connection, which can decrease the dependency between layers and increase the network capacity.

Image Segmentation Semantic Segmentation

Feature Sensitive Label Fusion with Random Walker for Atlas-based Image Segmentation

no code implementations24 Oct 2016 Siqi Bao, Albert C. S. Chung

This label fusion method is formulated on a graph, which embraces both label priors from atlases and anatomical priors from target image.

Image Segmentation Semantic Segmentation

Graph-Based Optimization with Tubularity Markov Tree for 3D Vessel Segmentation

no code implementations CVPR 2013 Ning Zhu, Albert C. S. Chung

In this paper, we propose a graph-based method for 3D vessel tree structure segmentation based on a new tubularity Markov tree model (TMT ), which works as both new energy function and graph construction method.

graph construction Image Segmentation +2

Cannot find the paper you are looking for? You can Submit a new open access paper.