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Registering human meshes to 3D point clouds is essential for applications such as augmented reality and human-robot interaction but often yields imprecise results due to noise and background clutter in real-world data. We introduce a hybrid…

Computer Vision and Pattern Recognition · Computer Science 2025-04-07 Kai Lascheit , Daniel Barath , Marc Pollefeys , Leonidas Guibas , Francis Engelmann

Purpose: This study aims to explore training strategies to improve convolutional neural network-based image-to-image deformable registration for abdominal imaging. Methods: Different training strategies, loss functions, and transfer…

Image and Video Processing · Electrical Eng. & Systems 2023-02-28 Javier Pérez de Frutos , André Pedersen , Egidijus Pelanis , David Bouget , Shanmugapriya Survarachakan , Thomas Langø , Ole-Jakob Elle , Frank Lindseth

As in other areas of medical image analysis, e.g. semantic segmentation, deep learning is currently driving the development of new approaches for image registration. Multi-scale encoder-decoder network architectures achieve state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2021-03-02 Lasse Hansen , Mattias P. Heinrich

In recent years, deep learning methods such as convolutional neural network (CNN) and transformers have made significant progress in CT multi-organ segmentation. However, CT multi-organ segmentation methods based on masked image modeling…

Computer Vision and Pattern Recognition · Computer Science 2025-04-04 Yunhao Lv , Lingyu Chen , Jian Wang , Yangxi Li , Fang Chen

Probabilistic point cloud registration methods are becoming more popular because of their robustness. However, unlike point-to-plane variants of iterative closest point (ICP) which incorporate local surface geometric information such as…

Computer Vision and Pattern Recognition · Computer Science 2021-08-16 Weixiao Liu , Hongtao Wu , Gregory Chirikjian

The lack of sufficient annotated image data is a common issue in medical image segmentation. For some organs and densities, the annotation may be scarce, leading to poor model training convergence, while other organs have plenty of…

Image and Video Processing · Electrical Eng. & Systems 2021-09-22 Anastasia Makarevich , Azade Farshad , Vasileios Belagiannis , Nassir Navab

Purpose: Middle ear infection is the most prevalent inflammatory disease, especially among the pediatric population. Current diagnostic methods are subjective and depend on visual cues from an otoscope, which is limited for otologists to…

Computer Vision and Pattern Recognition · Computer Science 2023-04-27 Peng Liu , Jonas Golde , Joseph Morgenstern , Sebastian Bodenstedt , Chenpan Li , Yujia Hu , Zhaoyu Chen , Edmund Koch , Marcus Neudert , Stefanie Speidel

We propose a novel point cloud based 3D organ segmentation pipeline utilizing deep Q-learning. In order to preserve shape properties, the learning process is guided using a statistical shape model. The trained agent directly predicts…

Computer Vision and Pattern Recognition · Computer Science 2018-06-18 Xia Zhong , Mario Amrehn , Nishant Ravikumar , Shuqing Chen , Norbert Strobel , Annette Birkhold , Markus Kowarschik , Rebecca Fahrig , Andreas Maier

Multi-organ segmentation, which identifies and separates different organs in medical images, is a fundamental task in medical image analysis. Recently, the immense success of deep learning motivated its wide adoption in multi-organ…

Computer Vision and Pattern Recognition · Computer Science 2023-04-17 Jiahua Dong , Guohua Cheng , Yue Zhang , Chengtao Peng , Yu Song , Ruofeng Tong , Lanfen Lin , Yen-Wei Chen

Deformable registration continues to be one of the key challenges in medical image analysis. While iconic registration methods have started to benefit from the recent advances in medical deep learning, the same does not yet apply for the…

Computer Vision and Pattern Recognition · Computer Science 2019-09-18 Lasse Hansen , Doris Dittmer , Mattias P. Heinrich

Automatic segmentation of abdomen organs using medical imaging has many potential applications in clinical workflows. Recently, the state-of-the-art performance for organ segmentation has been achieved by deep learning models, i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2019-10-16 Jinzheng Cai , Yingda Xia , Dong Yang , Daguang Xu , Lin Yang , Holger Roth

In image-guided liver surgery, the initial rigid alignment between preoperative and intraoperative data, often represented as point clouds, is crucial for providing sub-surface information from preoperative CT/MRI images to the surgeon…

Computer Vision and Pattern Recognition · Computer Science 2025-05-19 Zixin Yang , Jon S. Heiselman , Cheng Han , Kelly Merrell , Richard Simon , Cristian. A. Linte

Deep learning has shown great promise in the ability to automatically annotate organs in magnetic resonance imaging (MRI) scans, for example, of the brain. However, despite advancements in the field, the ability to accurately segment…

Image and Video Processing · Electrical Eng. & Systems 2024-03-26 Cosmin Ciausu , Deepa Krishnaswamy , Benjamin Billot , Steve Pieper , Ron Kikinis , Andrey Fedorov

High-throughput image analysis in the biomedical domain has gained significant attention in recent years, driving advancements in drug discovery, disease prediction, and personalized medicine. Organoids, specifically, are an active area of…

Unsafe surgical care is a critical health concern, often linked to limitations in surgeon experience, skills, and situational awareness. Integrating patient-specific 3D models into the surgical field can enhance visualization, provide…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Alberto Neri , Veronica Penza , Nazim Haouchine , Leonardo S. Mattos

Clinical fusion of Single Photon Emission Computed Tomography Myocardial Perfusion Imaging (SPECT MPI) and Computed Tomography Angiography (CTA) remains limited by cross-modality misregistration and reliance on manual landmarks, which can…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Ni Yao , Xiangyu Liu , Shaojie Tang , Danyang Sun , Chuang Han , Yanting Li , Jiaofen Nan , Chengyang Li , Fubao Zhu , Chen Zhao , Zhihui Xu , Weihua Zhou

Partial shapes correspondences is a problem that often occurs in computer vision (occlusion, evolution in time...). In medical imaging, data may come from different modalities and be acquired under different conditions which leads to…

Image and Video Processing · Electrical Eng. & Systems 2022-04-13 Pierre-Louis Antonsanti , Thomas Benseghir , Vincent Jugnon , Mario Ghosn , Perrine Chassat , Irène Kaltenmark , Joan Glaunès

We present a novel algorithm for the registration of pulmonary CT scans. Our method is designed for large respiratory motion by integrating sparse keypoint correspondences into a dense continuous optimization framework. The detection of…

Computer Vision and Pattern Recognition · Computer Science 2018-07-03 Jan Rühaak , Thomas Polzin , Stefan Heldmann , Ivor J. A. Simpson , Heinz Handels , Jan Modersitzki , Mattias P. Heinrich

Deep-learning-based registration methods emerged as a fast alternative to conventional registration methods. However, these methods often still cannot achieve the same performance as conventional registration methods because they are either…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Alessa Hering , Stephanie Häger , Jan Moltz , Nikolas Lessmann , Stefan Heldmann , Bram van Ginneken

Despite the considerable progress in automatic abdominal multi-organ segmentation from CT/MRI scans in recent years, a comprehensive evaluation of the models' capabilities is hampered by the lack of a large-scale benchmark from diverse…

Image and Video Processing · Electrical Eng. & Systems 2022-09-05 Yuanfeng Ji , Haotian Bai , Jie Yang , Chongjian Ge , Ye Zhu , Ruimao Zhang , Zhen Li , Lingyan Zhang , Wanling Ma , Xiang Wan , Ping Luo