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Image super-resolution and denoising are two important tasks in image processing that can lead to improvement in image quality. Image super-resolution is the task of mapping a low resolution image to a high resolution image whereas…

Computer Vision and Pattern Recognition · Computer Science 2018-09-24 Rohit Pardasani , Utkarsh Shreemali

In this work we propose a ResNet-based universal method for speckle reduction in optical coherence tomography (OCT) images. The proposed model contains 3 main modules: Convolution-BN-ReLU, Branch and Residual module. Unlike traditional…

Computer Vision and Pattern Recognition · Computer Science 2019-03-25 Cai Ning , Shi Fei , Hu Dianlin , Chen Yang

One popular strategy for image denoising is to design a generalized regularization term that is capable of exploring the implicit prior underlying data observation. Convolutional neural networks (CNN) have shown the powerful capability to…

Image and Video Processing · Electrical Eng. & Systems 2019-10-22 Peng Liu , Xiaoxiao Zhou , Junyiyang Li , El Basha Mohammad D , Ruogu Fang

Currently, image-denoising methods based on deep learning cannot adequately reconcile contextual semantic information and spatial details. To take these information optimizations into consideration, in this paper, we propose a Context-Space…

Computer Vision and Pattern Recognition · Computer Science 2023-05-18 Yuqi Jiang , Chune Zhang , Jiao Liu

Convolutional Neural Networks (CNNs) have emerged as highly successful tools for image generation, recovery, and restoration. A major contributing factor to this success is that convolutional networks impose strong prior assumptions about…

Machine Learning · Computer Science 2020-02-25 Reinhard Heckel , Mahdi Soltanolkotabi

With recent rapid advances in photonic integrated circuits, it has been demonstrated that programmable photonic chips can be used to implement artificial neural networks. Convolutional neural networks (CNN) are a class of deep learning…

Signal Processing · Electrical Eng. & Systems 2020-03-30 Jun Rong Ong , Chin Chun Ooi , Thomas Y. L. Ang , Soon Thor Lim , Ching Eng Png

Optical Coherence Tomography is a technique used to scan the Retina of the eye and check for tears. In this paper, we develop a Convolutional Neural Network Architecture for OCT scan classification. The model is trained to detect Retinal…

Computer Vision and Pattern Recognition · Computer Science 2022-12-01 Adit Magotra , Aagat Gedam , Tanush Savadi , Emily Li

The popularity of Convolutional Neural Network (CNN) in the field of Image Processing and Computer Vision has motivated researchers and industrialist experts across the globe to solve different challenges with high accuracy. The simplest…

Computer Vision and Pattern Recognition · Computer Science 2019-07-29 Bulla Rajesh , Mohammed Javed , Ratnesh , Shubham Srivastava

In coronary CT angiography, a series of CT images are taken at different levels of radiation dose during the examination. Although this reduces the total radiation dose, the image quality during the low-dose phases is significantly…

Computer Vision and Pattern Recognition · Computer Science 2019-03-06 Eunhee Kang , Hyun Jung Koo , Dong Hyun Yang , Joon Bum Seo , Jong Chul Ye

In modern artificial intelligence, convolutional neural networks (CNNs) have become a cornerstone for visual and perceptual tasks. However, their implementation on conventional electronic hardware faces fundamental bottlenecks in speed and…

We design a novel network architecture for learning discriminative image models that are employed to efficiently tackle the problem of grayscale and color image denoising. Based on the proposed architecture, we introduce two different…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Stamatios Lefkimmiatis

Image denoising is a classical problem in low level computer vision. Model-based optimization methods and deep learning approaches have been the two main strategies for solving the problem. Model-based optimization methods are flexible for…

Computer Vision and Pattern Recognition · Computer Science 2018-12-31 Chang Liu , Zhaowei Shang , Anyong Qin

Since the advent of deep convolutional neural networks (DNNs), computer vision has seen an extremely rapid progress that has led to huge advances in medical imaging. This article does not aim to cover all aspects of the field but focuses on…

Medical Physics · Physics 2019-06-11 Shizuo Kaji , Satoshi Kida

Multispectral computed tomography (CT) enables advanced material characterization by acquiring energy-resolved projection data. However, since the incoming X-ray flux is be distributed across multiple narrow energy bins, the photon count…

Automated surface segmentation of retinal layer is important and challenging in analyzing optical coherence tomography (OCT). Recently, many deep learning based methods have been developed for this task and yield remarkable performance.…

Image and Video Processing · Electrical Eng. & Systems 2022-03-07 Hong Liu , Dong Wei , Donghuan Lu , Yuexiang Li , Kai Ma , Liansheng Wang , Yefeng Zheng

Purpose: To develop a deep learning approach to digitally-stain optical coherence tomography (OCT) images of the optic nerve head (ONH). Methods: A horizontal B-scan was acquired through the center of the ONH using OCT (Spectralis) for 1…

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 (speckle…

Layer segmentation is important to quantitative analysis of retinal optical coherence tomography (OCT). Recently, deep learning based methods have been developed to automate this task and yield remarkable performance. However, due to the…

Image and Video Processing · Electrical Eng. & Systems 2023-12-07 Hong Liu , Dong Wei , Donghuan Lu , Xiaoying Tang , Liansheng Wang , Yefeng Zheng

A major challenge in computed tomography (CT) is how to minimize patient radiation exposure without compromising image quality and diagnostic performance. The use of deep convolutional (Conv) neural networks for noise reduction in Low-Dose…

Computer Vision and Pattern Recognition · Computer Science 2019-08-06 Chenyu You , Linfeng Yang , Yi Zhang , Ge Wang

Optical coherence tomography angiography (OCTA) is a novel non-invasive imaging modality that allows micron-level resolution to visualize the retinal microvasculature. The retinal vessel segmentation in OCTA images is still an open problem,…

Image and Video Processing · Electrical Eng. & Systems 2022-05-10 Mingchao Li , Yerui Chen , Weiwei Zhang , Qiang Chen