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Deep convolutional neural networks (CNNs) are state-of-the-art for semantic image segmentation, but typically require many labeled training samples. Obtaining 3D segmentations of medical images for supervised training is difficult and labor…

Computer Vision and Pattern Recognition · Computer Science 2019-07-29 Zhenlin Xu , Marc Niethammer

We explore three representative lines of research and demonstrate the utility of our methods on a classification benchmark of brain cancer MRI data. First, we present a capsule network that explicitly learns a representation robust to…

Image and Video Processing · Electrical Eng. & Systems 2020-05-13 Neil Getty , Thomas Brettin , Dong Jin , Rick Stevens , Fangfang Xia

In the study of shapes of human organs using computational anatomy, variations are found to arise from inter-subject anatomical differences, disease-specific effects, and measurement noise. This paper introduces a stochastic model for…

Computer Vision and Pattern Recognition · Computer Science 2016-12-19 Alexis Arnaudon , Darryl D. Holm , Akshay Pai , Stefan Sommer

Joint registration of a stack of 2D histological sections to recover 3D structure (``3D histology reconstruction'') finds application in areas such as atlas building and validation of \emph{in vivo} imaging. Straightforward pairwise…

Image and Video Processing · Electrical Eng. & Systems 2021-12-02 Adrià Casamitjana , Marco Lorenzi , Sebastiano Ferraris , Loc Peter , Marc Modat , Allison Stevens , Bruce Fischl , Tom Vercauteren , Juan Eugenio Iglesias

In this work we present a method of automatic segmentation of defective skulls for custom cranial implant design and 3D printing purposes. Since such tissue models are usually required in patient cases with complex anatomical defects and…

Image and Video Processing · Electrical Eng. & Systems 2020-11-05 Oldřich Kodym , Michal Španěl , Adam Herout

Incorporation of prior knowledge about organ shape and location is key to improve performance of image analysis approaches. In particular, priors can be useful in cases where images are corrupted and contain artefacts due to limitations in…

A novel template matching algorithm that can incorporate the concept of deformable parts, is presented in this paper. Unlike the deformable part model (DPM) employed in object recognition, the proposed template-matching approach called…

Computer Vision and Pattern Recognition · Computer Science 2016-04-13 Hyungtae Lee , Heesung Kwon , Ryan M. Robinson , William D. Nothwang

We introduce deep neural networks for the analysis of anatomical shapes that learn a low-dimensional shape representation from the given task, instead of relying on hand-engineered representations. Our framework is modular and consists of…

Computer Vision and Pattern Recognition · Computer Science 2020-10-05 Benjamin Gutierrez Becker , Ignacio Sarasua , Christian Wachinger

Purpose: Conventional automated segmentation of the head anatomy in MRI distinguishes different brain and non-brain tissues based on image intensities and prior tissue probability maps (TPM). This works well for normal head anatomies, but…

Image and Video Processing · Electrical Eng. & Systems 2021-05-20 Lukas Hirsch , Yu Huang , Lucas C Parra

Recently, deep neural networks have greatly advanced undersampled Magnetic Resonance Image (MRI) reconstruction, wherein most studies follow the one-anatomy-one-network fashion, i.e., each expert network is trained and evaluated for a…

Image and Video Processing · Electrical Eng. & Systems 2022-06-17 Jiangpeng Yan , Chenghui Yu , Hanbo Chen , Zhe Xu , Junzhou Huang , Xiu Li , Jianhua Yao

One of the major difficulties in medical image segmentation is the high variability of these images, which is caused by their origin (multi-centre), the acquisition protocols (multi-parametric), as well as the variability of human anatomy,…

Image and Video Processing · Electrical Eng. & Systems 2022-11-09 Jhon Jairo Saenz-Gamboa , Julio Domenech , Antonio Alonso-Manjarrés , Jon A. Gómez , Maria de la Iglesia-Vayá

Recently, learning frameworks have shown the capability of inferring the accurate shape, pose, and texture of an object from a single RGB image. However, current methods are trained on image collections of a single category in order to…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Alessandro Simoni , Stefano Pini , Roberto Vezzani , Rita Cucchiara

Automatic annotation of anatomical structures can help simplify workflow during interventions in numerous clinical applications but usually involves a large amount of annotated data. The complexity of the labeling task, together with the…

Computer Vision and Pattern Recognition · Computer Science 2020-09-28 Pierre-Louis Antonsanti , Thomas Benseghir , Vincent Jugnon , Joan Glaunès

We present deformable unsupervised medical image registration using a randomly-initialized deep convolutional neural network (CNN) as regularization prior. Conventional registration methods predict a transformation by minimizing…

Image and Video Processing · Electrical Eng. & Systems 2019-08-05 Max-Heinrich Laves , Sontje Ihler , Tobias Ortmaier

We propose a novel image registration method based on implicit neural representations that addresses the challenging problem of registering a pair of brain images with similar anatomical structures, but where one image contains additional…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Michal Byra , Charissa Poon , Tomomi Shimogori , Henrik Skibbe

Spatial transformations are enablers in a variety of medical image analysis applications that entail aligning images to a common coordinate systems. Population analysis of such transformations is expected to capture the underlying image and…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Riddhish Bhalodia , Shireen Y. Elhabian , Ladislav Kavan , Ross T. Whitaker

We present MultiMorph, a fast and efficient method for constructing anatomical atlases on the fly. Atlases capture the canonical structure of a collection of images and are essential for quantifying anatomical variability across…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 S. Mazdak Abulnaga , Andrew Hoopes , Neel Dey , Malte Hoffmann , Marianne Rakic , Bruce Fischl , John Guttag , Adrian Dalca

Feature extraction from persistence diagrams, as a tool to enrich machine learning techniques, has received increasing attention in recent years. In this paper we explore an adaptive methodology to localize features in persistent diagrams,…

Machine Learning · Computer Science 2019-10-16 Luis Polanco , Jose A. Perea

Accurate volumetric image registration is highly relevant for clinical routines and computer-aided medical diagnosis. Recently, researchers have begun to use transformers in learning-based methods for medical image registration, and have…

Computer Vision and Pattern Recognition · Computer Science 2024-06-17 Ahsan Raza Siyal , Astrid Ellen Grams , Markus Haltmeier

This paper presents a framework for automatically learning shape and appearance models for medical (and certain other) images. It is based on the idea that having a more accurate shape and appearance model leads to more accurate image…

Computer Vision and Pattern Recognition · Computer Science 2019-05-29 John Ashburner , Mikael Brudfors , Kevin Bronik , Yael Balbastre