Speckle reducing oct using optical chopper

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August undefined, 2024

WebSpeckle reducing OCT using optical chopper. 55727 Uncategorized Tsinghua University. Bin He ... WebSpeckle reduction is generally used before image segmentation and registration as a preprocessing step. Existing techniques of speckle reduction include averaging, resolution enhancement, and postprocessing approaches.

Speckle reduction in visible-light optical coherence …

WebNov 10, 2024 · Optical coherence tomography (OCT) is widely used in clinical diagnosis due to its non-invasive, real-time, and high-resolution characteristics. However, the inherent speckle nois WebSpeckle noise exists inherently in the synthetic aperture radar (SAR) image. Its multiplicative property leads to lots of difficulties in SAR image processing. A novel guidance-aided triple-adaptive Frost filter is proposed in this paper, which has potential for real-time processing platforms. Firstly, a scale-adaptive sliding window sizing method is adopted to determine … eastern red cedar seedlings for sale

A De-Speckling Framework for Optical Coherence Tomography …

WebJul 2, 2024 · Optical methods are non-contact and can be used for remote measurements. Laser Doppler Vibrometers are commonly used for vibration measurement and damage detection (Ehrhardt et al., 2024; Siringoringo and Fujino, 2006; Srivastava and Baqersad, 2024; Tuononen, 2011; Warren et al., 2011); however, it is challenging to use them for … WebIn this paper we propose a novel speckle noise suppression technique which changes the spatial distribution of sample beam using a special optical chopper. Then a series of OCT … WebAug 1, 2024 · Two categories of methods were used to reduce noise, including hardware-based and image-processing-based methods. Hardware-based methods include optical chopper [7], angular compounding [8,9], spatial compounding [10,11], and frequency compounding [12], aiming to produce uncorrelated speckle patterns that can be … cuisinart ice cream maker bed bath and beyond

Speckle reduction in optical coherence tomography images using …

The experimental setup of OCT. Download Scientific …

WebMar 22, 2024 · The speckle noise from the OCT images can also be reduced by sparse and redundant representation of image along with K-SVD algorithm [ 15 ]. Discrete wavelet transform with Bayesian threshold is also used for speckle noise removal from OCT images [ 16 ]. Recently, a number of combinational techniques are also used to de-noising the … WebNov 1, 2011 · Signal-degrading speckle is one factor that can reduce the quality of optical coherence tomography images. We demonstrate the use of a hierarchical model-based motion estimation processing scheme based on an affine-motion model to reduce speckle in optical coherence tomography imaging, by image registration and the averaging of … eastern red cedar seed podWebSpeckle Reduction in Optical Coherence Tomography via Super-Resolution Reconstruction Abstract: Reducing speckle noise from the optical coherence tomograms (OCT) of human … cuisinart ice cream bowl replacement

"WebJournal Of The Optical Society Of America A-Optics Image Science And Vision, 2024, 38(7): 973-984. (SCIE, JCR Q3,中科院3区,影响因子IF= 2.104) [34] Huang Z, Tang C,Xu M, et al. Both speckle reduction and contrast enhancement for optical coherence tomography via sequential optimization in the logarithmic domain based on a refined Retinex ... " - Speckle reducing oct using optical chopper

Speckle reducing oct using optical chopper

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WebApr 13, 2024 · Visible light optical coherence tomography (vis-OCT) provides a unique tool for imaging both structure and oxygen metabolism in ophthalmology. ... Kopriva, F. Shi, and X. Chen, “ Enhanced low-rank + sparsity decomposition for speckle reduction in optical coherence tomography,” J. Biomed. Opt. 21, 076008 (2016). ... The optical properties of ... WebDec 8, 2024 · Speckle noise is ubiquitous in the optical coherence tomography (OCT) image of the anterior segment, which greatly affects the image quality and destroys the relevant structural information. In order to reduce the influence of speckle noise in OCT images, a denoising algorithm based on a convolutional neural network is proposed in this paper.

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WebSpeckle reduction in optical coherence tomography images using tissue viscoelasticity. Home / Publications / Journal Articles / Speckle reduction in optical coherence tomography images using tissue viscoelasticity. ... Optical+Biomedical Engineering Laboratory. School of Electrical, Electronic & Computer Engineering M018 ... WebJan 1, 2024 · To effectively reduce the speckle noise of OCT images, we propose an edge feature-guided HOSVD method, which consists of five coherent parts: blocks grouping, Eckar-Young-Mirsky theorem based core tensor thresholding, edge feature-guided core tensor shrinking, blocks aggregation, and adaptive backward projection.

WebJan 1, 2024 · Optical coherence tomography (OCT), as a tool for biological research and clinical application, plays an important role in disease diagnosis. However, speckle noise … WebJun 17, 2007 · Two novel speckle noise reduction algorithms based on interval type II fuzzy sets has been developed to improve the quality of the OCT images and a novel even-order dispersion cancellation interferometry via a linear, classical interferometer has …

WebDec 8, 2024 · Speckle noise is ubiquitous in the optical coherence tomography (OCT) image of the anterior segment, which greatly affects the image quality and destroys the relevant … WebSpeckle is a characteristic granular texture inherent to optical coherence tomography (OCT) images of turbid media, such as biological tissues. Speckle is a consequence of the coherent nature of OCT, and results from the interference …

WebApr 6, 2024 · Spectral-domain optical coherence tomography (SD-OCT) images inevitably suffer from multiplicative speckle noise caused by random interference. This study proposes an unsupervised domain adaptation approach for noise reduction by translating the SD-OCT to the corresponding high-quality enhanced depth imaging (EDI)-OCT. We …

WebFeb 14, 2024 · Optical coherence tomography (OCT) is a powerful biomedical imaging technology that relies on the coherent detection of backscattered light to image tissue morphology in vivo. As a consequence, OCT is susceptible to coherent noise, known as speckle noise, which imposes significant limitations on its diagnostic capabilities. Here … cuisinart ice cream maker banana recipesWebFeb 14, 2024 · Here we show Speckle- Modulating OCT (SM-OCT), a method based purely on light manipulation, which can remove speckle noise, including noise originating from … cuisinart ice cream maker currysWebFeb 1, 2024 · By using the site you are agreeing to this as outlined in our privacy notice and cookie policy. Abstract Read article for free, via Unpaywall (a legal, open copy of the full … eastern red cedar seeds for saleWebAbstract We present a technique to reduce speckle in visible-light optical coherence tomography (vis-OCT) that preserves fine structural details and is robust against sample … cuisinart ice cream maker 2 quart bowlWebSpeckle reduction is generally used before image segmentation and registration as a preprocessing step. Existing techniques of speckle reduction include averaging, … cuisinart ice cream maker model ice-20WebOptical coherence tomography (OCT) is widely used in biomedical imaging. However, noise severely affects diagnosing and identifying diseased tissues on OCT images. eastern red cedar tree for sale near meWebIn this paper, we demonstrate a novel OFDI system that simultaneously acquires hundreds of angularly resolved images, which can be compounded to reduce speckle noise. The … cuisinart ice cream maker coffee ice cream