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Thomson scattering (TS) diagnostics provide reliable, minimally perturbative measurements of fundamental plasma parameters, such as electron density ($n_e$) and electron temperature ($T_e$). Deep neural networks can provide accurate…

Nonlinear electromagnetic (EM) inverse scattering is a quantitative and super-resolution imaging technique, in which more realistic interactions between the internal structure of scene and EM wavefield are taken into account in the imaging…

信息检索 · 计算机科学 2019-05-01 Lianlin Li , Long Gang Wang , Fernando L. Teixeira , Che Liu , Arye Nehora , Tie Jun Cui

Large scale image super-resolution is a challenging computer vision task, since vast information is missing in a highly degraded image, say for example forscale x16 super-resolution. Diffusion models are used successfully in recent years in…

图像与视频处理 · 电气工程与系统科学 2023-12-22 Chun-Chuen Hui , Wan-Chi Siu , Ngai-Fong Law

Diffusion Probabilistic Models (DPMs) have demonstrated substantial promise in image generation tasks but heavily rely on the availability of large amounts of training data. Previous works, like GANs, have tackled the limited data problem…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Xiyu Wang , Baijiong Lin , Daochang Liu , Chang Xu

Trained with a sufficiently large training and testing dataset, Deep Neural Networks (DNNs) are expected to generalize. However, inputs may deviate from the training dataset distribution in real deployments. This is a fundamental issue with…

机器学习 · 计算机科学 2021-10-07 Yan Xiao , Yun Lin , Ivan Beschastnikh , Changsheng Sun , David S. Rosenblum , Jin Song Dong

Standard deep neural networks (DNNs) are commonly trained in an end-to-end fashion for specific tasks such as object recognition, face identification, or character recognition, among many examples. This specificity often leads to…

计算机视觉与模式识别 · 计算机科学 2020-07-14 Raphaël Achddou , J. Matias di Martino , Guillermo Sapiro

Convolutional neural networks (CNNs) are extensively beneficial for medical image processing. Medical images are plentiful, but there is a lack of annotated data. Transfer learning is used to solve the problem of lack of labeled data and…

计算机视觉与模式识别 · 计算机科学 2020-02-11 Sajjad Abbasi , Mohsen Hajabdollahi , Nader Karimi , Shadrokh Samavi , Shahram Shirani

Radio-Frequency (RF) imaging concerns the digital recreation of the surfaces of scene objects based on the scattered field at distributed receivers. To solve this difficult inverse scattering problems, data-driven methods are often employed…

Deep learning has been extensively used in various fields, such as phase imaging, 3D imaging reconstruction, phase unwrapping, and laser speckle reduction, particularly for complex problems that lack analytic models. Its data-driven nature…

机器学习 · 计算机科学 2024-10-16 Xuyu Zhang , Haofan Huang , Dawei Zhang , Songlin Zhuang , Shensheng Han , Puxiang Lai , Honglin Liu

Recent research efforts in optical computing have gravitated towards developing optical neural networks that aim to benefit from the processing speed and parallelism of optics/photonics in machine learning applications. Among these…

光学 · 物理学 2020-12-25 Deniz Mengu , Yair Rivenson , Aydogan Ozcan

Unconstrained video recognition and Deep Convolution Network (DCN) are two active topics in computer vision recently. In this work, we apply DCNs as frame-based recognizers for video recognition. Our preliminary studies, however, show that…

计算机视觉与模式识别 · 计算机科学 2015-06-16 Yu-Chuan Su , Tzu-Hsuan Chiu , Chun-Yen Yeh , Hsin-Fu Huang , Winston H. Hsu

A variety of deep neural network (DNN)-based image denoising methods have been proposed for use with medical images. These methods are typically trained by minimizing loss functions that quantify a distance between the denoised image, or a…

图像与视频处理 · 电气工程与系统科学 2022-11-28 Kaiyan Li , Hua Li , Mark A. Anastasio

Dynamic scattering remains a significant challenge to the practical deployment of anti-scattering imaging. Existing methods, such as transmission matrix measurements, iterative wavefront shaping, and optical phase conjugation, depend on a…

Computational imaging through scatter generally is accomplished by first characterizing the scattering medium so that its forward operator is obtained; and then imposing additional priors in the form of regularizers on the reconstruction…

光学 · 物理学 2017-11-21 Shuai Li , Mo Deng , Justin Lee , Ayan Sinha , George Barbastathis

Imaging through scattering media is encountered in many disciplines or sciences, ranging from biology, mesescopic physics and astronomy. But it is still a big challenge because light suffers from multiple scattering is such media and can be…

神经与进化计算 · 计算机科学 2017-08-29 Meng Lyu , Hao Wang , Guowei Li , Guohai Situ

It has been proven that transfer learning provides an easy way to achieve state-of-the-art accuracies on several vision tasks by training a simple classifier on top of features obtained from pre-trained neural networks. The goal of this…

机器学习 · 计算机科学 2016-06-07 Milad Mohammadi , Subhasis Das

Most of the Deep Neural Networks (DNNs) based CT image denoising literature shows that DNNs outperform traditional iterative methods in terms of metrics such as the RMSE, the PSNR and the SSIM. In many instances, using the same metrics, the…

计算机视觉与模式识别 · 计算机科学 2021-11-19 Prabhat KC , Rongping Zeng , M. Mehdi Farhangi , Kyle J. Myers

In medical image analysis, transfer learning is a powerful method for deep neural networks (DNNs) to generalize well on limited medical data. Prior efforts have focused on developing pre-training algorithms on domains such as lung…

计算机视觉与模式识别 · 计算机科学 2023-05-30 Yixiong Chen , Li Liu , Jingxian Li , Hua Jiang , Chris Ding , Zongwei Zhou

Transfer learning from natural image datasets, particularly ImageNet, using standard large models and corresponding pretrained weights has become a de-facto method for deep learning applications to medical imaging. However, there are…

计算机视觉与模式识别 · 计算机科学 2019-10-31 Maithra Raghu , Chiyuan Zhang , Jon Kleinberg , Samy Bengio

A multitude of imaging and vision tasks have seen recently a major transformation by deep learning methods and in particular by the application of convolutional neural networks. These methods achieve impressive results, even for…

计算机视觉与模式识别 · 计算机科学 2018-11-30 Simon Arridge , Andreas Hauptmann