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In this paper, we consider the problem of blind signal and image separation using a sparse representation of the images in the wavelet domain. We consider the problem in a Bayesian estimation framework using the fact that the distribution…

数据分析、统计与概率 · 物理学 2009-11-07 Ali Mohammad-Djafari , Mahieddine Ichir

The task of blood vessel segmentation in microscopy images is crucial for many diagnostic and research applications. However, vessels can look vastly different, depending on the transient imaging conditions, and collecting data for…

图像与视频处理 · 电气工程与系统科学 2019-08-19 Shir Gur , Lior Wolf , Lior Golgher , Pablo Blinder

Vessels are complex structures in the body that have been studied extensively in multiple representations. While voxelization is the most common of them, meshes and parametric models are critical in various applications due to their…

Starting from a variational formulation, we present a model for image segmentation that employs both region statistics and edge information. This combination allows for improved flexibility, making the proposed model suitable to process a…

偏微分方程分析 · 数学 2019-10-15 Carlos M. Paniagua Mejia

Though performed almost effortlessly by humans, segmenting 2D gray-scale or color images into respective regions of interest (e.g.~background, objects, or portions of objects) constitutes one of the greatest challenges in science and…

计算机视觉与模式识别 · 计算机科学 2023-08-23 Alexandre Benatti , Luciano da F. Costa

Automated segmentation plays a pivotal role in medical image analysis and computer-assisted interventions. Despite the promising performance of existing methods based on convolutional neural networks (CNNs), they neglect useful equivariant…

图像与视频处理 · 电气工程与系统科学 2025-01-27 Jiazhen Zhang , Yuexi Du , Nicha C. Dvornek , John A. Onofrey

Cherenkov imaging enables real-time visualization of megavoltage X-ray or electron beam delivery to the patient during Radiation Therapy (RT). Bio-morphological features, such as vasculature, seen in these images are patient-specific…

图像与视频处理 · 电气工程与系统科学 2024-09-10 Shiru Wang , Yao Chen , Lesley A. Jarvis , Yucheng Tang , David J. Gladstone , Kimberley S. Samkoe , Brian W. Pogue , Petr Bruza , Rongxiao Zhang

We propose a novel approach for pixel classification in hyperspectral images, leveraging on both the spatial and spectral information in the data. The introduced method relies on a recently proposed framework for learning on distributions…

计算机视觉与模式识别 · 计算机科学 2016-05-31 Gianni Franchi , Jesus Angulo , Dino Sejdinovic

Image segmentation is a critical step in computational biomedical image analysis, typically evaluated using metrics like the Dice coefficient during training and validation. However, in clinical settings without manual annotations,…

Accurate and reliable image segmentation is an essential part of biomedical image analysis. In this paper, we consider the problem of biomedical image segmentation using deep convolutional neural networks. We propose a new end-to-end…

计算机视觉与模式识别 · 计算机科学 2018-10-02 Amirhossein Dadashzadeh , Alireza Tavakoli Targhi

The accurate segmentation of retinal vessels in fundus images is a great challenge in medical image segmentation tasks due to their highly complex structure from other organs.Currently, deep-learning based methods for retinal cessel…

计算机视觉与模式识别 · 计算机科学 2024-10-22 Yiwang Dong , Xiangyu Deng

The accurate retinal vessel segmentation (RVS) is of great significance to assist doctors in the diagnosis of ophthalmology diseases and other systemic diseases. Manually designing a valid neural network architecture for retinal vessel…

图像与视频处理 · 电气工程与系统科学 2020-03-19 Zhun Fan , Jiahong Wei , Guijie Zhu , Jiajie Mo , Wenji Li

We introduce an approach for selecting objects in neural volumetric 3D representations, such as multi-plane images (MPI) and neural radiance fields (NeRF). Our approach takes a set of foreground and background 2D user scribbles in one view…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Zhongzheng Ren , Aseem Agarwala , Bryan Russell , Alexander G. Schwing , Oliver Wang

Intravascular Ultrasound (IVUS) is an intra-operative imaging modality that facilitates observing and appraising the vessel wall structure of the human coronary arteries. Segmentation of arterial wall boundaries from the IVUS images is not…

计算机视觉与模式识别 · 计算机科学 2018-06-12 Mehdi Faraji , Irene Cheng , Iris Naudin , Anup Basu

Automated detection and segmentation of pulmonary nodules on lung computed tomography (CT) scans can facilitate early lung cancer diagnosis. Existing supervised approaches for automated nodule segmentation on CT scans require voxel-based…

计算机视觉与模式识别 · 计算机科学 2018-02-26 Xinyang Feng , Jie Yang , Andrew F. Laine , Elsa D. Angelini

To improve the efficiency of surgical trajectory segmentation for robot learning in robot-assisted minimally invasive surgery, this paper presents a fast unsupervised method using video and kinematic data, followed by a promoting procedure…

计算机视觉与模式识别 · 计算机科学 2018-10-02 Zhenzhou Shao , Hongfa Zhao , Jiexin Xie , Ying Qu , Yong Guan , Jindong Tan

To minimize the annotation costs associated with the training of semantic segmentation models, researchers have extensively investigated weakly-supervised segmentation approaches. In the current weakly-supervised segmentation methods, the…

计算机视觉与模式识别 · 计算机科学 2019-11-13 Wataru Shimoda , Keiji Yanai

In this paper we propose a wavelet-based methodology for estimation and variable selection in partially linear models. The inference is conducted in the wavelet domain, which provides a sparse and localized decomposition appropriate for…

统计方法学 · 统计学 2016-09-26 Norbert Remenyi

Pixel intensity is a widely used feature for clustering and segmentation algorithms, the resulting segmentation using only intensity values might suffer from noises and lack of spatial context information. Wavelet transform is often used…

图像与视频处理 · 电气工程与系统科学 2019-07-09 Junyu Chen , Eric C. Frey

With the introduction of spectral-domain optical coherence tomography (OCT), resulting in a significant increase in acquisition speed, the fast and accurate segmentation of 3-D OCT scans has become evermore important. This paper presents a…

计算机视觉与模式识别 · 计算机科学 2014-04-01 Fabian Rathke , Stefan Schmidt , Christoph Schnörr
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