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Diffuse optical tomography (DOT) has been investigated as an alternative imaging modality for breast cancer detection thanks to its excellent contrast to hemoglobin oxidization level. However, due to the complicated non-linear photon…

Light scattering within scattering media presents a substantial obstacle to optical transmission. A speckle pattern with random amplitude and phase distribution is observed when coherent light travels through strong scattering media.…

光学 · 物理学 2022-09-01 Hui Liu , Xiangyu Zhu , Xiaoxue Zhang , Xudong Chen , Zhili Lin

Face recognition has already been well studied under the visible light and the infrared,in both intra-spectral and cross-spectral cases. However, how to fuse different light bands, i.e., hyperspectral face recognition, is still an open…

计算机视觉与模式识别 · 计算机科学 2020-09-15 Zhicheng Cao , Xi Cen , Liaojun Pang

Deep learning methods have witnessed the great progress in image restoration with specific metrics (e.g., PSNR, SSIM). However, the perceptual quality of the restored image is relatively subjective, and it is necessary for users to control…

计算机视觉与模式识别 · 计算机科学 2019-08-21 Wei Wang , Ruiming Guo , Yapeng Tian , Wenming Yang

Tomographic image reconstruction is relevant for many medical imaging modalities including X-ray, ultrasound (US) computed tomography (CT) and photoacoustics, for which the access to full angular range tomographic projections might be not…

图像与视频处理 · 电气工程与系统科学 2019-06-14 Valery Vishnevskiy , Richard Rau , Orcun Goksel

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

Inverse scattering problems, such as those in electromagnetic imaging using phaseless data (PD-ISPs), involve imaging objects using phaseless measurements of wave scattering. Such inverse problems can be highly non-linear and ill-posed…

信号处理 · 电气工程与系统科学 2022-12-07 Samruddhi Deshmukh , Amartansh Dubey , Ross Murch

Neural networks allow solving many ill-posed inverse problems with unprecedented performance. Physics informed approaches already progressively replace carefully hand-crafted reconstruction algorithms in real applications. However, these…

机器学习 · 计算机科学 2023-12-19 Alban Gossard , Pierre Weiss

Focusing scattered light using wavefront shaping provides interesting perspectives to image deep in opaque samples, as e.g. in nonlinear fluorescence microscopy. Applying these technics to in vivo imaging remains challenging due to the…

Convolution has been the core ingredient of modern neural networks, triggering the surge of deep learning in vision. In this work, we rethink the inherent principles of standard convolution for vision tasks, specifically spatial-agnostic…

计算机视觉与模式识别 · 计算机科学 2021-04-13 Duo Li , Jie Hu , Changhu Wang , Xiangtai Li , Qi She , Lei Zhu , Tong Zhang , Qifeng Chen

We present a new approach for spatiotemporal focusing through complex scattering media by wave front shaping. Using a nonlinear feedback signal to shape the incident pulsed wave front, we show that the limit of a spatiotemporal matched…

Imaging through scattering is an important, yet challenging problem. Tremendous progress has been made by exploiting the deterministic input-output "transmission matrix" for a fixed medium. However, this "one-to-one" mapping is highly…

图像与视频处理 · 电气工程与系统科学 2018-09-27 Yunzhe Li , Yujia Xue , Lei Tian

It is widely believed that the success of deep convolutional networks is based on progressively discarding uninformative variability about the input with respect to the problem at hand. This is supported empirically by the difficulty of…

机器学习 · 计算机科学 2018-06-25 Jörn-Henrik Jacobsen , Arnold Smeulders , Edouard Oyallon

Multiple-surface segmentation in Optical Coherence Tomography (OCT) images is a challenge problem, further complicated by the frequent presence of weak image boundaries. Recently, many deep learning (DL) based methods have been developed…

图像与视频处理 · 电气工程与系统科学 2022-10-13 Hui Xie , Weiyu Xu , Xiaodong Wu

Understanding and predicting the human visual attentional mechanism is an active area of research in the fields of neuroscience and computer vision. In this work, we propose DeepFix, a first-of-its-kind fully convolutional neural network…

计算机视觉与模式识别 · 计算机科学 2015-10-13 Srinivas S. S. Kruthiventi , Kumar Ayush , R. Venkatesh Babu

An ability to generalize unconstrained conditions such as severe occlusions and large pose variations remains a challenging goal to achieve in face alignment. In this paper, a multistage model based on deep neural networks is proposed which…

计算机视觉与模式识别 · 计算机科学 2020-02-05 Huabin Wang , Rui Cheng , Jian Zhou , Liang Tao , Hon Keung Kwan

Semantic segmentation is an essential part of deep learning. In recent years, with the development of remote sensing big data, semantic segmentation has been increasingly used in remote sensing. Deep convolutional neural networks (DCNNs)…

计算机视觉与模式识别 · 计算机科学 2021-05-31 Xuan Yang , Shanshan Li , Zhengchao Chen , Jocelyn Chanussot , Xiuping Jia , Bing Zhang , Baipeng Li , Pan Chen

This paper introduces a novel deep neural network architecture for solving the inverse scattering problem in frequency domain with wide-band data, by directly approximating the inverse map, thus avoiding the expensive optimization loop of…

数值分析 · 数学 2024-08-07 Borong Zhang , Leonardo Zepeda-Núñez , Qin Li

Light propagation in materials with microscopic inhomogeneities is affected by scattering. In scattering materials, such as powders, disordered metamaterials or biological tissue, multiple scattering on sub-wavelength particles makes light…

无序系统与神经网络 · 物理学 2009-11-13 I. M. Vellekoop , A. P. Mosk