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Image reconstruction for positron emission tomography (PET) is challenging because of the ill-conditioned tomographic problem and low counting statistics. Kernel methods address this challenge by using kernel representation to incorporate…

图像与视频处理 · 电气工程与系统科学 2022-05-26 Siqi Li , Guobao Wang

We present a self-supervised approach to training convolutional neural networks for dense depth estimation from monocular endoscopy data without a priori modeling of anatomy or shading. Our method only requires sequential data from…

计算机视觉与模式识别 · 计算机科学 2019-04-02 Xingtong Liu , Ayushi Sinha , Mathias Unberath , Masaru Ishii , Gregory Hager , Russell H. Taylor , Austin Reiter

Computed tomography (CT) is increasingly being used for cancer screening, such as early detection of lung cancer. However, CT studies have varying pixel spacing due to differences in acquisition parameters. Thick slice CTs have lower…

计算机视觉与模式识别 · 计算机科学 2018-07-19 Meng Li , Shiwen Shen , Wen Gao , William Hsu , Jason Cong

Wireless Capsule Endoscopy (WCE) is being increasingly used as an alternative imaging modality for complete and non-invasive screening of the gastrointestinal tract. Although this is advantageous in reducing unnecessary hospital admissions,…

图像与视频处理 · 电气工程与系统科学 2024-05-07 Anuja Vats , Marius Pedersen , Ahmed Mohammed , Øistein Hovde

Conventional 2D Convolutional Neural Networks (CNN) extract features from an input image by applying linear filters. These filters compute the spatial coherence by weighting the photometric information on a fixed neighborhood without taking…

计算机视觉与模式识别 · 计算机科学 2020-09-24 Zongwei Wu , Guillaume Allibert , Christophe Stolz , Cedric Demonceaux

This paper addresses the problem of human body detection---particularly a human body lying on the ground (a.k.a. casualty)---using point cloud data. This ability to detect a casualty is one of the most important features of mobile rescue…

计算机视觉与模式识别 · 计算机科学 2020-02-19 Roni Permana Saputra , Nemanja Rakicevic , Petar Kormushev

Recent advancements in deep learning for automated image processing and classification have accelerated many new applications for medical image analysis. However, most deep learning applications have been developed using reconstructed,…

计算机视觉与模式识别 · 计算机科学 2018-12-05 Hyunkwang Lee , Chao Huang , Sehyo Yune , Shahein H. Tajmir , Myeongchan Kim , Synho Do

Deep learning methods can be found in many medical imaging applications. Recently, those methods were applied directly to the RF ultrasound multi-channel data to enhance the quality of the reconstructed images. In this paper, we apply a…

信号处理 · 电气工程与系统科学 2020-11-23 Nissim Peretz , Arie Feuer

We propose a novel data-driven approach for high-resolution bathymetric reconstruction from sidescan. Sidescan sonar (SSS) intensities as a function of range do contain some information about the slope of the seabed. However, that…

机器人学 · 计算机科学 2022-06-17 Yiping Xie , Nils Bore , John Folkesson

In this paper, we explore how synthetically generated 3D face models can be used to construct a high accuracy ground truth for depth. This allows us to train the Convolutional Neural Networks (CNN) to solve facial depth estimation problems.…

图像与视频处理 · 电气工程与系统科学 2020-03-27 Faisal Khan , Shubhajit Basak , Hossein Javidnia , Michael Schukat , Peter Corcoran

Depth estimation is a challenging task of 3D reconstruction to enhance the accuracy sensing of environment awareness. This work brings a new solution with a set of improvements, which increase the quantitative and qualitative understanding…

计算机视觉与模式识别 · 计算机科学 2021-12-14 Armin Masoumian , Hatem A. Rashwan , Saddam Abdulwahab , Julian Cristiano , Domenec Puig

Perception and localization are essential for autonomous delivery vehicles, mostly estimated from 3D LiDAR sensors due to their precise distance measurement capability. This paper presents a strategy to obtain the real-time pseudo point…

计算机视觉与模式识别 · 计算机科学 2022-05-18 Sabir Hossain , Xianke Lin

Estimating accurate depth from a single image is challenging because it is an ill-posed problem as infinitely many 3D scenes can be projected to the same 2D scene. However, recent works based on deep convolutional neural networks show great…

计算机视觉与模式识别 · 计算机科学 2021-09-24 Jin Han Lee , Myung-Kyu Han , Dong Wook Ko , Il Hong Suh

Estimating precise metric depth and scene reconstruction from monocular endoscopy is a fundamental task for surgical navigation in robotic surgery. However, traditional stereo matching adopts binocular images to perceive the depth…

机器人学 · 计算机科学 2022-11-29 Ruofeng Wei , Bin Li , Hangjie Mo , Fangxun Zhong , Yonghao Long , Qi Dou , Yun-Hui Liu , Dong Sun

Volumetric rendering of Computed Tomography (CT) scans is crucial for visualizing complex 3D anatomical structures in medical imaging. Current high-fidelity approaches, especially neural rendering techniques, require time-consuming…

计算机视觉与模式识别 · 计算机科学 2025-05-26 Zhongpai Gao , Meng Zheng , Benjamin Planche , Anwesa Choudhuri , Terrence Chen , Ziyan Wu

Computed tomography (CT) is a beneficial imaging tool for diagnostic purposes. CT scans provide detailed information concerning the internal anatomic structures of a patient, but present higher radiation dose and costs compared to X-ray…

图像与视频处理 · 电气工程与系统科学 2024-03-05 Benjamin Paulson , Joshua Goldshteyn , Sydney Balboni , John Cisler , Andrew Crisler , Natalia Bukowski , Julia Kalish , Theodore Colwell

Existing panoramic depth estimation methods based on convolutional neural networks (CNNs) focus on removing panoramic distortions, failing to perceive panoramic structures efficiently due to the fixed receptive field in CNNs. This paper…

计算机视觉与模式识别 · 计算机科学 2022-07-13 Zhijie Shen , Chunyu Lin , Kang Liao , Lang Nie , Zishuo Zheng , Yao Zhao

Convolutional Neural Networks (CNNs) have become the state-of-the-art in various computer vision tasks, but they are still premature for most sensor data, especially in pervasive and wearable computing. A major reason for this is the…

计算机视觉与模式识别 · 计算机科学 2017-07-18 Monit Shah Singh , Vinaychandran Pondenkandath , Bo Zhou , Paul Lukowicz , Marcus Liwicki

Deconvolution microscopy has been extensively used to improve the resolution of the wide-field fluorescent microscopy, but the performance of classical approaches critically depends on the accuracy of a model and optimization algorithms.…

图像与视频处理 · 电气工程与系统科学 2020-07-09 Sungjun Lim , Hyoungjun Park , Sang-Eun Lee , Sunghoe Chang , Jong Chul Ye

Depth information is useful for many applications. Active depth sensors are appealing because they obtain dense and accurate depth maps. However, due to issues that range from power constraints to multi-sensor interference, these sensors…

图像与视频处理 · 电气工程与系统科学 2020-02-04 James Noraky , Vivienne Sze