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Purpose: Optical imaging is evolving as a key technique for advanced sensing in the operating room. Recent research has shown that machine learning algorithms can be used to address the inverse problem of converting pixel-wise multispectral…

Segmentation is one of the most significant steps in image processing. Segmenting an image is a technique that makes it possible to separate a digital image into various areas based on the different characteristics of pixels in the image.…

图像与视频处理 · 电气工程与系统科学 2024-11-20 Sina Derakhshandeh , Ali Mahloojifar

Accurate cerebrovascular segmentation from Magnetic Resonance Angiography (MRA) and Computed Tomography Angiography (CTA) is of great significance in diagnosis and treatment of cerebrovascular pathology. Due to the complexity and topology…

图像与视频处理 · 电气工程与系统科学 2024-11-22 Zhanqiang Guo , Yao Luan , Jianjiang Feng , Wangsheng Lu , Yin Yin , Guangming Yang , Jie Zhou

Automatic quantification of perifoveal vessel densities in optical coherence tomography angiography (OCT-A) images face challenges such as variable intra- and inter-image signal to noise ratios, projection artefacts from outer vasculature…

Segmentation of blood vessels in murine cerebral 3D OCTA images is foundational for in vivo quantitative analysis of the effects of neurovascular disorders, such as stroke or Alzheimer's, on the vascular network. However, to accurately…

图像与视频处理 · 电气工程与系统科学 2024-03-13 Bastian Wittmann , Lukas Glandorf , Johannes C. Paetzold , Tamaz Amiranashvili , Thomas Wälchli , Daniel Razansky , Bjoern Menze

Early detection of lung cancer is crucial for effective treatment and relies on accurate volumetric assessment of pulmonary nodules in CT scans. Traditional methods, such as consolidation-to-tumor ratio (CTR) and spherical approximation,…

图像与视频处理 · 电气工程与系统科学 2025-08-29 Yihan Zhou , Haocheng Huang , Yue Yu , Jianhui Shang

MR vascular Fingerprinting proposes to use the MR Fingerprinting framework to quantitatively and simultaneously map several microvascular characteristics at a sub-voxel scale. The initial implementation assessed the local blood oxygenation…

Convolutional neural networks are powerful tools for image segmentation and classification. Here, we use this method to identify and mark the heart region of Drosophila at different developmental stages in the cross-sectional images…

计算机视觉与模式识别 · 计算机科学 2018-07-24 Lian Duan , Xi Qin , Yuanhao He , Xialin Sang , Jinda Pan , Tao Xu , Jing Men , Rudolph E. Tanzi , Airong Li , Yutao Ma , Chao Zhou

Blood oxygen saturation (SpO$_2$) is an essential indicator of respiratory functionality and is receiving increasing attention during the COVID-19 pandemic. Clinical findings show that it is possible for COVID-19 patients to have…

机器学习 · 计算机科学 2025-02-04 Joshua Mathew , Xin Tian , Min Wu , Chau-Wai Wong

Optical coherence tomography angiography (OCTA) is a novel noninvasive imaging modality for visualization of retinal blood flow in the human retina. Using specific OCTA imaging biomarkers for the identification of pathologies, automated…

图像与视频处理 · 电气工程与系统科学 2025-04-09 Anna Breger , Felix Goldbach , Bianca S. Gerendas , Ursula Schmidt-Erfurth , Martin Ehler

In an inhomogeneously illuminated photoacoustic image, important information like vascular geometry is not readily available when only the initial pressure is reconstructed. To obtain the desired information, algorithms for image…

图像与视频处理 · 电气工程与系统科学 2019-06-19 Yoeri E. Boink , Srirang Manohar , Christoph Brune

Convolutional neural networks (CNNs) are the current state-of-the-art meta-algorithm for volumetric segmentation of medical data, for example, to localize COVID-19 infected tissue on computer tomography scans or the detection of tumour…

图像与视频处理 · 电气工程与系统科学 2021-10-22 Christoph Reich , Tim Prangemeier , Özdemir Cetin , Heinz Koeppl

Creating a dataset for training supervised machine learning algorithms can be a demanding task. This is especially true for medical image segmentation since one or more specialists are usually required for image annotation, and creating…

计算机视觉与模式识别 · 计算机科学 2024-10-28 Matheus Viana da Silva , Natália de Carvalho Santos , Julie Ouellette , Baptiste Lacoste , Cesar Henrique Comin

Convolutional neural networks (CNNs) for biomedical image analysis are often of very large size, resulting in high memory requirement and high latency of operations. Searching for an acceptable compressed representation of the base CNN for…

计算机视觉与模式识别 · 计算机科学 2019-09-10 Suraj Mishra , Peixian Liang , Adam Czajka , Danny Z. Chen , X. Sharon Hu

The near infrared scattering images of human muscle include some information on bloodstream and hemoglobin concentration according to skin depth and time. This paper addressed a method of determining oxygen saturation and photoplethysmogram…

医学物理 · 物理学 2016-04-26 Yong-U Ri , Young-Hui Pyon , Kye-Ryong Sin

Recent advances in photoacoustic (PA) imaging have enabled detailed images of microvascular structure and quantitative measurement of blood oxygenation or perfusion. Standard reconstruction methods for PA imaging are based on solving an…

信号处理 · 电气工程与系统科学 2020-04-17 MinWoo Kim , Geng-Shi Jeng , Ivan Pelivanov , Matthew O'Donnell

There is large consent that successful training of deep networks requires many thousand annotated training samples. In this paper, we present a network and training strategy that relies on the strong use of data augmentation to use the…

计算机视觉与模式识别 · 计算机科学 2015-05-19 Olaf Ronneberger , Philipp Fischer , Thomas Brox

We present a cascade deep neural network to segment retinal vessels in volumetric optical coherence tomography (OCT). Two types of knowledge are infused into the network for confining the searching regions. (1) Histology. The retinal…

图像与视频处理 · 电气工程与系统科学 2019-10-22 Liyang Fang , Jianlong Yang , Lei Mou , Huihong Zhang , Zhenjie Chai , Zhi Chen , Jiang Liu

The task of automatically segmenting 3-D surfaces representing boundaries of objects is important for quantitative analysis of volumetric images, and plays a vital role in biomedical image analysis. Recently, graph-based methods with a…

计算机视觉与模式识别 · 计算机科学 2018-01-10 Abhay Shah , Michael Abramoff , Xiaodong Wu

Automated detection of curvilinear structures, e.g., blood vessels or nerve fibres, from medical and biomedical images is a crucial early step in automatic image interpretation associated to the management of many diseases. Precise…

图像与视频处理 · 电气工程与系统科学 2020-10-20 Lei Mou , Yitian Zhao , Huazhu Fu , Yonghuai Liu , Jun Cheng , Yalin Zheng , Pan Su , Jianlong Yang , Li Chen , Alejandro F Frang , Masahiro Akiba , Jiang Liu