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This study leverages convolutional neural networks to enhance the temporal resolution of 3D angiography in intracranial aneurysms focusing on the reconstruction of volumetric contrast data from sparse and limited projections. Three…

Cone-beam breast computed tomography (CT) provides true 3D breast images with isotropic resolution and high-contrast information, detecting calcifications as small as a few hundred microns and revealing subtle tissue differences. However,…

医学物理 · 物理学 2019-12-18 Wenxiang Cong , Hongming Shan , Xiaohua Zhang , Shaohua Liu , Ruola Ning , Ge Wang

Feature tracking is the building block of many applications such as visual odometry, augmented reality, and target tracking. Unfortunately, the state-of-the-art vision-based tracking algorithms fail in surgical images due to the challenges…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Mostafa Parchami , Saif Iftekar Sayed

Reconstructing dynamic, time-varying scenes with computed tomography (4D-CT) is a challenging and ill-posed problem common to industrial and medical settings. Existing 4D-CT reconstructions are designed for sparse sampling schemes that…

图像与视频处理 · 电气工程与系统科学 2021-04-26 Albert W. Reed , Hyojin Kim , Rushil Anirudh , K. Aditya Mohan , Kyle Champley , Jingu Kang , Suren Jayasuriya

X-ray computed tomography (CT) reveals the materials' internal structures non-destructively from a tilt series of projected images. Filtered back projection (FBP) is a widely-adopted reconstruction algorithm in CT owing to its small…

We propose Video-TransUNet, a deep architecture for instance segmentation in medical CT videos constructed by integrating temporal feature blending into the TransUNet deep learning framework. In particular, our approach amalgamates strong…

图像与视频处理 · 电气工程与系统科学 2022-08-23 Chengxi Zeng , Xinyu Yang , Majid Mirmehdi , Alberto M Gambaruto , Tilo Burghardt

Convolutional neural networks are state-of-the-art for various segmentation tasks. While for 2D images these networks are also computationally efficient, 3D convolutions have huge storage requirements and therefore, end-to-end training is…

计算机视觉与模式识别 · 计算机科学 2022-02-01 Christoph Angermann , Markus Haltmeier

Deep learning has been shown to produce state of the art results in many tasks in biomedical imaging, especially in segmentation. Moreover, segmentation of the cerebrovascular structure from magnetic resonance angiography is a challenging…

计算机视觉与模式识别 · 计算机科学 2018-12-06 Pedro Sanches , Cyril Meyer , Vincent Vigon , Benoît Naegel

Conventional deep convolutional neural networks (CNNs) apply convolution operators uniformly in space across all feature maps for hundreds of layers - this incurs a high computational cost for real-time applications. For many problems such…

计算机视觉与模式识别 · 计算机科学 2018-06-08 Mengye Ren , Andrei Pokrovsky , Bin Yang , Raquel Urtasun

Recently, many methods based on hand-designed convolutional neural networks (CNNs) have achieved promising results in automatic retinal vessel segmentation. However, these CNNs remain constrained in capturing retinal vessels in complex…

图像与视频处理 · 电气工程与系统科学 2021-06-14 Jiahong Wei , Zhun Fan

Deep Learning (DL) has shown remarkable results in solving inverse problems in various domains. In particular, the Tikhonet approach is very powerful to deconvolve optical astronomical images (Sureau et al. 2020). Yet, this approach only…

天体物理仪器与方法 · 物理学 2022-07-20 F. Nammour , U. Akhaury , J. N. Girard , F. Lanusse , F. Sureau , C. Ben Ali , J. -L. Starck

Currently, convolutional neural networks (CNN) (e.g., U-Net) have become the de facto standard and attained immense success in medical image segmentation. However, as a downside, CNN based methods are a double-edged sword as they fail to…

图像与视频处理 · 电气工程与系统科学 2022-04-01 Reza Azad , Moein Heidari , Yuli Wu , Dorit Merhof

Neural segmentation has a great impact on the smooth implementation of local anesthesia surgery. At present, the network for the segmentation includes U-NET [1] and SegNet [2]. U-NET network has short training time and less training…

计算机视觉与模式识别 · 计算机科学 2017-08-17 Chenyang Xu , Mengxin Li

Cone-Beam Computed Tomography (CBCT) is essential in medical imaging, and the Feldkamp-Davis-Kress (FDK) algorithm is a popular choice for reconstruction due to its efficiency. However, FDK is susceptible to noise and artifacts. While…

图像与视频处理 · 电气工程与系统科学 2025-05-21 Yipeng Sun , Linda-Sophie Schneider , Chengze Ye , Mingxuan Gu , Siyuan Mei , Siming Bayer , Andreas Maier

When solving a segmentation task, shaped-base methods can be beneficial compared to pixelwise classification due to geometric understanding of the target object as shape, preventing the generation of anatomical implausible predictions in…

计算机视觉与模式识别 · 计算机科学 2024-07-30 Ron Keuth , Mattias Heinrich

In this paper, we present a generic deep convolutional neural network (DCNN) for multi-class image segmentation. It is based on a well-established supervised end-to-end DCNN model, known as U-net. U-net is firstly modified by adding widely…

图像与视频处理 · 电气工程与系统科学 2020-04-29 Mina Jafari , Ruizhe Li , Yue Xing , Dorothee Auer , Susan Francis , Jonathan Garibaldi , Xin Chen

Hazy images reduce the visibility of the image content, and haze will lead to failure in handling subsequent computer vision tasks. In this paper, we address the problem of image dehazing by proposing a dehazing network named T-Net, which…

计算机视觉与模式识别 · 计算机科学 2021-06-08 Lirong Zheng , Yanshan Li , Kaihao Zhang , Wenhan Luo

This paper tackles the challenge of colorizing grayscale images. We take a deep convolutional neural network approach, and choose to take the angle of classification, working on a finite set of possible colors. Similarly to a recent paper,…

计算机视觉与模式识别 · 计算机科学 2018-11-09 Vincent Billaut , Matthieu de Rochemonteix , Marc Thibault

The cost-effectiveness and practical harmlessness of ultrasound imaging have made it one of the most widespread tools for medical diagnosis. Unfortunately, the beam-forming based image formation produces granular speckle noise, blurring,…

计算机视觉与模式识别 · 计算机科学 2017-10-19 Sanketh Vedula , Ortal Senouf , Alex M. Bronstein , Oleg V. Michailovich , Michael Zibulevsky

Fully convolutional U-shaped neural networks have largely been the dominant approach for pixel-wise image segmentation. In this work, we tackle two defects that hinder their deployment in real-world applications: 1) Predictions lack…

计算机视觉与模式识别 · 计算机科学 2021-06-29 Martin Ferianc , Divyansh Manocha , Hongxiang Fan , Miguel Rodrigues