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Acousto-optical coherence tomography (AOCT) consists in using random phase jumps on ultrasound and light to achieve a millimeter resolution when imaging thick scattering media. We combined this technique with heterodyne off-axis digital…

光学 · 物理学 2012-10-12 Michel Gross , François Ramaz , Emilie Benoit , Emmanuel Bossy , Salma Farahi

Based on high-throughput dark-field full-field optical coherence tomography, we designed and built an OCT system that can measure a variety of samples with different scattered light intensities, such as materials with multi-layer…

光学 · 物理学 2024-01-30 Youlong Fan , Qingye Hu , Zhongping Wang , Xiantao Wei , Zengming Zhang

Coronary artery disease (CAD) is a cardiovascular condition with high morbidity and mortality. Intravascular optical coherence tomography (IVOCT) has been considered as an optimal imagining system for the diagnosis and treatment of CAD.…

图像与视频处理 · 电气工程与系统科学 2022-04-26 Xueshen Li , Shengting Cao , Hongshan Liu , Xinwen Yao , Brigitta C. Brott , Silvio H. Litovsky , Xiaoyu Song , Yuye Ling , Yu Gan

Computational imaging modalities support a simplification of the active architectures required in an imaging system and these approaches have been validated across the electromagnetic spectrum. Recent implementations have utilized…

经典物理 · 物理学 2016-08-24 Thomas Fromenteze , Xiaojun Liu , Michael Boyarsky , Jonah Gollub , David R. Smith

Optical coherence tomography angiography (OCTA) is a noninvasive imaging technique that can reveal high-resolution retinal vessels. In this work, we propose an accurate and efficient neural network for retinal vessel segmentation in OCTA…

图像与视频处理 · 电气工程与系统科学 2023-09-19 Haojian Ning , Chengliang Wang , Xinrun Chen , Shiying Li

A computer's clock rate ultimately determines the minimum time between sequential operations or instructions. Despite exponential advances in electronic computer performance owing to Moore's Law and increasingly parallel system…

In this work, we propose to leverage a deep-learning (DL) based reconstruction framework for high quality Swept-Source Optical Coherence Tomography (SS-OCT) images, by incorporating wavelength ({\lambda}) space interferometric fringes.…

图像与视频处理 · 电气工程与系统科学 2024-10-08 Maryam Viqar , Erdem Sahin , Violeta Madjarova , Elena Stoykova , Keehoon Hong

Allying high-resolution with a large field-of-view (FOV) is of great importance in the fields of biology and medicine, but particularly challenging when imaging non-flat living samples such as the human retina. Indeed, high-resolution is…

We present a computational method for full-range interferometric synthetic aperture microscopy (ISAM) under dispersion encoding. With this, one can effectively double the depth range of optical coherence tomography (OCT), whilst…

图像与视频处理 · 电气工程与系统科学 2020-02-03 Jonathan H. Mason , Mike E. Davies , Pierre O. Bagnaninchi

Robotic laser systems offer the potential for sub-millimeter, non-contact, high-precision tissue resection, yet existing platforms lack volumetric planning and intraoperative feedback. We present RATS (Robot-Assisted Tissue Surgery), an…

Dynamic optical coherence tomography (DOCT) enables label-free functional imaging by capturing temporal OCT signal variations caused by intracellular and intratissue motions. However, the relationship between DOCT signals and the sample…

Optically detected magnetic resonance (ODMR) has become a well-established and powerful technique for measuring the spin state of solid-state quantum emitters, at room temperature. Relying on spin-dependent recombination processes involving…

量子物理 · 物理学 2024-05-30 Dylan G. Stone , Benjamin Whitefield , Mehran Kianinia , Carlo Bradac

The precise analysis and accurate measurement of harmonic provides a reliable scientific industrial application. However, the high-performance DSP processor is the important method of electrical harmonic analysis. Hence, in this research…

信号处理 · 电气工程与系统科学 2018-06-13 Rozita Teymourzadeh , Memtode Jim , Mok Vee hong

Conventional Fourier-domain Optical Coherence Tomography (FD-OCT) systems depend on resampling into wavenumber (k) domain to extract the depth profile. This either necessitates additional hardware resources or amplifies the existing…

光学 · 物理学 2025-09-24 Maryam Viqar , Erdem Sahin , Elena Stoykova , Violeta Madjarova

Visible light communications (VLC) have recently attracted a growing interest and can be a potential solution to realize indoor wireless communication with high bandwidth capacity for RF-restricted environments such as airplanes and…

信息论 · 计算机科学 2016-11-18 Bilal A. Ranjha , Mohammadreza A. Kashani , Mohsen Kavehrad , Peng Deng

Purpose. Localizing structures and estimating the motion of a specific target region are common problems for navigation during surgical interventions. Optical coherence tomography (OCT) is an imaging modality with a high spatial and…

图像与视频处理 · 电气工程与系统科学 2020-04-22 Marcel Bengs , Nils Gessert , Matthias Schlüter , Alexander Schlaefer

In this paper, the problem of image super-resolution for Optical Coherence Tomography (OCT) has been addressed. Due to the motion artifacts, OCT imaging is usually done with a low sampling rate and the resulting images are often noisy and…

图像与视频处理 · 电气工程与系统科学 2023-06-22 Farnaz Sedighin , Andrzej Cichocki , Hossein Rabbani

Optical coherence tomography angiography (OCTA) has been established as a powerful tool for investigating vascular diseases and is expected to become a standard of care technology. However, its widespread clinical usage is hindered by…

医学物理 · 物理学 2021-09-10 Si Chen , Kan Lin , Linbo Liu

Count-Min Sketch (CMS) is a memory-efficient data structure for estimating the frequency of elements in a multiset. Learned Count-Min Sketch (LCMS) enhances CMS with a machine learning model to reduce estimation error under the same memory…

机器学习 · 计算机科学 2025-12-16 Kyosuke Nishishita , Atsuki Sato , Yusuke Matsui

In this letter, we analyze the performance of mixed coherent and non-coherent transmissions approach, which can improve the performance of cell-free multiple-input multiple-output orthogonal frequency division multiplexing (CF mMIMO-OFDM)…

信息论 · 计算机科学 2024-11-12 Guoyu Li , Shaochuan Wu , Changsheng You , Wenbin Zhang , Guanyu Shang