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Depth estimation is a crucial step for 3D reconstruction with panorama images in recent years. Panorama images maintain the complete spatial information but introduce distortion with equirectangular projection. In this paper, we propose an…

计算机视觉与模式识别 · 计算机科学 2022-04-04 Chuanqing Zhuang , Zhengda Lu , Yiqun Wang , Jun Xiao , Ying Wang

This paper explores convolutional generative networks as an alternative to iterative reconstruction algorithms in medical image reconstruction. The task of medical image reconstruction involves mapping of projection main data collected from…

医学物理 · 物理学 2020-12-04 V. S. S. Kandarpa , Alexandre Bousse , Didier Benoit , Dimitris Visvikis

Traditional algorithms for compressive sensing recovery are computationally expensive and are ineffective at low measurement rates. In this work, we propose a data driven non-iterative algorithm to overcome the shortcomings of earlier…

计算机视觉与模式识别 · 计算机科学 2017-08-18 Suhas Lohit , Kuldeep Kulkarni , Ronan Kerviche , Pavan Turaga , Amit Ashok

We propose an efficient Stereographic Projection Neural Network (SPNet) for learning representations of 3D objects. We first transform a 3D input volume into a 2D planar image using stereographic projection. We then present a shallow 2D…

计算机视觉与模式识别 · 计算机科学 2019-01-25 Mohsen Yavartanoo , Eu Young Kim , Kyoung Mu Lee

Direct reconstruction of positron emission tomography (PET) data using deep neural networks is a growing field of research. Initial results are promising, but often the networks are complex, memory utilization inefficient, produce…

图像与视频处理 · 电气工程与系统科学 2020-06-16 William Whiteley , Vladimir Panin , Chuanyu Zhou , Jorge Cabello , Deepak Bharkhada , Jens Gregor

Plasma tomography consists in reconstructing the 2D radiation profile in a poloidal cross-section of a fusion device, based on line-integrated measurements along several lines of sight. The reconstruction process is computationally…

计算物理 · 物理学 2018-02-08 Diogo R. Ferreira , Pedro J. Carvalho , Horácio Fernandes

Photoacoustic computed tomography (PACT) is an emerging computed imaging modality that exploits optical contrast and ultrasonic detection principles to form images of the absorbed optical energy density within tissue. If the object…

医学物理 · 物理学 2017-09-08 Joemini Poudel , Thomas P. Matthews , Lei Li , Mark A. Anastasio , Lihong V. Wang

Image reconstruction from radio-frequency data is pivotal in ultrafast plane wave ultrasound imaging. Unlike the conventional delay-and-sum (DAS) technique, which relies on somewhat imprecise assumptions, deep learning-based methods perform…

计算机视觉与模式识别 · 计算机科学 2023-12-18 Hengrong Lan , Zhiqiang Li , Qiong He , Jianwen Luo

Two-photon photoacoustic tomography (TP-PAT) is a non-invasive optical molecular imaging modality that aims at inferring two-photon absorption property of heterogeneous media from photoacoustic measurements. In this work, we analyze an…

偏微分方程分析 · 数学 2017-05-01 Kui Ren , Rongting Zhang

Dual-energy computed tomography (DECT) enables material-specific imaging through acquisitions at two different X-ray energy spectra. Material decomposition from DECT data is an ill-posed inverse problem that is highly sensitive to noise…

Depth estimation, as a necessary clue to convert 2D images into the 3D space, has been applied in many machine vision areas. However, to achieve an entire surrounding 360-degree geometric sensing, traditional stereo matching algorithms for…

计算机视觉与模式识别 · 计算机科学 2021-09-22 Keyang Zhou , Kailun Yang , Kaiwei Wang

In this paper, we propose a Deep Active Ray Network (DARNet) for automatic building segmentation. Taking an image as input, it first exploits a deep convolutional neural network (CNN) as the backbone to predict energy maps, which are…

计算机视觉与模式识别 · 计算机科学 2019-05-16 Dominic Cheng , Renjie Liao , Sanja Fidler , Raquel Urtasun

Photoacoustic computed tomography (PACT) is a non-invasive imaging modality, similar to ultrasound, with wide-ranging medical applications. Conventional PACT images are degraded by wavefront distortion caused by the heterogeneous speed of…

图像与视频处理 · 电气工程与系统科学 2025-08-05 Tianao Li , Manxiu Cui , Cheng Ma , Emma Alexander

Magnetic resonance (MR) image acquisition is an inherently prolonged process, whose acceleration has long been the subject of research. This is commonly achieved by obtaining multiple undersampled images, simultaneously, through parallel…

图像与视频处理 · 电气工程与系统科学 2021-06-15 Chun-Mei Feng , Zhanyuan Yang , Huazhu Fu , Yong Xu , Jian Yang , Ling Shao

Medical imaging is nowadays a pillar in diagnostics and therapeutic follow-up. Current research tries to integrate established - but ionizing - tomographic techniques with technologies offering reduced radiation exposure. Diffuse Optical…

数值分析 · 数学 2024-02-15 Alessandro Benfenati , Paola Causin , Martina Quinteri

Photonic neural networks perform brain-inspired computations using photons instead of electrons that can achieve substantially improved computing performance. However, existing architectures can only handle data with regular structures,…

新兴技术 · 计算机科学 2022-04-26 Tao Yan , Rui Yang , Ziyang Zheng , Xing Lin , Hongkai Xiong , Qionghai Dai

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…

Deep learning is having a profound impact in many fields, especially those that involve some form of image processing. Deep neural networks excel in turning an input image into a set of high-level features. On the other hand, tomography…

机器学习 · 统计学 2017-01-03 Francisco A. Matos , Diogo R. Ferreira , Pedro J. Carvalho , JET Contributors

We introduce a deep learning (DL) framework for inverse problems in imaging, and demonstrate the advantages and applicability of this approach in passive synthetic aperture radar (SAR) image reconstruction. We interpret image recon-…

计算机视觉与模式识别 · 计算机科学 2018-03-14 Bariscan Yonel , Eric Mason , Birsen Yazıcı

Photoacoustic imaging (PAI) represents an innovative biomedical imaging modality that harnesses the advantages of optical resolution and acoustic penetration depth while ensuring enhanced safety. Despite its promising potential across a…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Lei Wang , Weiming Zeng , Kai Long , Hongyu Chen , Rongfeng Lan , Li Liu , Wai Ting Siok , Nizhuan Wang