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Computed Tomography (CT) is an imaging technique where information about an object are collected at different angles (called projections or scans). Then the cross-sectional image showing the internal structure of the slice is produced by…

图像与视频处理 · 电气工程与系统科学 2022-09-07 Zhengchun Liu , Rajkumar Kettimuthu , Ian Foster

Deep neural networks have a great potential to improve image denoising in low-dose computed tomography (LDCT). Popular ways to increase the network capacity include adding more layers or repeating a modularized clone model in a sequence. In…

图像与视频处理 · 电气工程与系统科学 2020-05-15 Siqi Li , Guobao Wang

In clinical CT, the x-ray source emits polychromatic x-rays, which are detected in the current-integrating mode. This physical process is accurately described by an energy-dependent non-linear integral model on the basis of the Beer-Lambert…

医学物理 · 物理学 2018-01-11 Wenxiang Cong , Ge Wang

We propose a new method that uses deep learning techniques to solve the inverse problems. The inverse problem is cast in the form of learning an end-to-end mapping from observed data to the ground-truth. Inspired by the splitting strategy…

计算机视觉与模式识别 · 计算机科学 2017-12-04 Kai Fan , Qi Wei , Wenlin Wang , Amit Chakraborty , Katherine Heller

The sparse-views x-ray computed tomography (CT) is essential for medical diagnosis and industrial nondestructive testing. However, in particular, the reconstructed image usually suffers from complex artifacts and noise, when the sampling is…

医学物理 · 物理学 2019-10-08 Genwei Ma , Yining Zhu , Xing Zhao

Early and accurate diagnosis of interstitial lung diseases (ILDs) is crucial for making treatment decisions, but can be challenging even for experienced radiologists. The diagnostic procedure is based on the detection and recognition of the…

计算机视觉与模式识别 · 计算机科学 2018-04-02 Marios Anthimopoulos , Stergios Christodoulidis , Lukas Ebner , Thomas Geiser , Andreas Christe , Stavroula Mougiakakou

In this paper we present a generalized Deep Learning-based approach for solving ill-posed large-scale inverse problems occuring in medical image reconstruction. Recently, Deep Learning methods using iterative neural networks and cascaded…

图像与视频处理 · 电气工程与系统科学 2020-08-26 Andreas Kofler , Markus Haltmeier , Tobias Schaeffter , Marc Kachelrieß , Marc Dewey , Christian Wald , Christoph Kolbitsch

Low-Dose computer tomography (LDCT) is an ideal alternative to reduce radiation risk in clinical applications. Although supervised-deep-learning-based reconstruction methods have demonstrated superior performance compared to conventional…

图像与视频处理 · 电气工程与系统科学 2024-05-24 Feng Wang , Renfang Wang , Hong Qiu

Recent advances in deep learning for tomographic reconstructions have shown great potential to create accurate and high quality images with a considerable speed-up. In this work we present a deep neural network that is specifically designed…

计算机视觉与模式识别 · 计算机科学 2020-09-07 Andreas Hauptmann , Felix Lucka , Marta Betcke , Nam Huynh , Jonas Adler , Ben Cox , Paul Beard , Sebastien Ourselin , Simon Arridge

Seam carving is a representative content-aware image retargeting approach to adjust the size of an image while preserving its visually prominent content. To maintain visually important content, seam-carving algorithms first calculate the…

多媒体 · 计算机科学 2021-07-20 Seung-Hun Nam , Wonhyuk Ahn , In-Jae Yu , Myung-Joon Kwon , Minseok Son , Heung-Kyu Lee

A novel method, utilizing convolutional neural networks (CNNs), is proposed to reconstruct hyperspectral cubes from computed tomography imaging spectrometer (CTIS) images. Current reconstruction algorithms are usually subject to long…

图像与视频处理 · 电气工程与系统科学 2022-03-16 Wei-Chih Huang , Mads Svanborg Peters , Mads Juul Ahlebaek , Mads Toudal Frandsen , René Lynge Eriksen , Bjarke Jørgensen

In this work, we develop a novel technique for reconstructing images from projection-based nano- and microtomography. Our contribution focuses on enhancing reconstruction quality, particularly for specimen composed of homogeneous material…

计算机视觉与模式识别 · 计算机科学 2025-09-09 Anuraag Mishra , Andrea Gilch , Benjamin Apeleo Zubiri , Jan Rolfes , Frauke Liers

Convolutional Neural Networks (CNNs) have been recently employed to solve problems from both the computer vision and medical image analysis fields. Despite their popularity, most approaches are only able to process 2D images while most…

计算机视觉与模式识别 · 计算机科学 2016-06-16 Fausto Milletari , Nassir Navab , Seyed-Ahmad Ahmadi

We propose a novel deep reinforcement learning-based approach for 3D object reconstruction from monocular images. Prior works that use mesh representations are template based. Thus, they are limited to the reconstruction of objects that…

计算机视觉与模式识别 · 计算机科学 2021-09-27 Tarek Ben Charrada , Hedi Tabia , Aladine Chetouani , Hamid Laga

The use of deep learning has successfully solved several problems in the field of medical imaging. Deep learning has been applied to the CT denoising problem successfully. However, the use of deep learning requires large amounts of data to…

图像与视频处理 · 电气工程与系统科学 2022-04-04 Mayank Patwari , Ralf Gutjahr , Rainer Raupach , Andreas Maier

In this paper we address the problem of representing 3D visual data with parameterized volumetric shape primitives. Specifically, we present a (two-stage) approach built around convolutional neural networks (CNNs) capable of segmenting…

计算机视觉与模式识别 · 计算机科学 2020-01-29 Jaka Šircelj , Tim Oblak , Klemen Grm , Uroš Petković , Aleš Jaklič , Peter Peer , Vitomir Štruc , Franc Solina

Recent CT Metal Artifacts Reduction (MAR) methods are often based on image-to-image convolutional neural networks for adjustment of corrupted sinograms or images themselves. In this paper, we are exploring the capabilities of a multi-domain…

计算机视觉与模式识别 · 计算机科学 2020-05-12 Artem Pimkin , Alexander Samoylenko , Natalia Antipina , Anna Ovechkina , Andrey Golanov , Alexandra Dalechina , Mikhail Belyaev

Denoising of clinical CT images is an active area for deep learning research. Current clinically approved methods use iterative reconstruction methods to reduce the noise in CT images. Iterative reconstruction techniques require multiple…

图像与视频处理 · 电气工程与系统科学 2020-07-10 Mayank Patwari , Ralf Gutjahr , Rainer Raupach , Andreas Maier

Deep neural networks are applied to a wide range of problems in recent years. In this work, Convolutional Neural Network (CNN) is applied to the problem of determining the depth from a single camera image (monocular depth). Eight different…

计算机视觉与模式识别 · 计算机科学 2018-08-22 S. Bazrafkan , H. Javidnia , J. Lemley , P. Corcoran

To facilitate a prospective estimation of CT effective dose and risk minimization process, a prospective spatial dose estimation and the known anatomical structures are expected. To this end, a CT reconstruction method is required to…

图像与视频处理 · 电气工程与系统科学 2024-01-24 Chang Liu , Laura Klein , Yixing Huang , Edith Baader , Michael Lell , Marc Kachelrieß , Andreas Maier