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Visual relocalization has been a widely discussed problem in 3D vision: given a pre-constructed 3D visual map, the 6 DoF (Degrees-of-Freedom) pose of a query image is estimated. Relocalization in large-scale indoor environments enables…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Jiahui Zhang , Shitao Tang , Kejie Qiu , Rui Huang , Chuan Fang , Le Cui , Zilong Dong , Siyu Zhu , Ping Tan

To enhance the resolution of a confocal laser scanning microscope the additional information of a pinhole plane image taken at every excitation scan position can be used [C. J. R. Sheppard, Super-resolution in confocal imaging, Optik 80,…

Optics · Physics 2013-06-27 Stephan Roth , Colin J. R. Sheppard , Kai Wicker , Rainer Heintzmann

Automatic breast lesion detection and classification is an important task in computer-aided diagnosis, in which breast ultrasound (BUS) imaging is a common and frequently used screening tool. Recently, a number of deep learning-based…

Image and Video Processing · Electrical Eng. & Systems 2022-10-13 Zong Fan , Ping Gong , Shanshan Tang , Christine U. Lee , Xiaohui Zhang , Pengfei Song , Shigao Chen , Hua Li

With lung cancer being the most fatal cancer worldwide, it is important to detect the disease early. A potentially effective way of detecting early cancer lesions developing along the airway walls (epithelium) is bronchoscopy. To this end,…

Image and Video Processing · Electrical Eng. & Systems 2023-03-21 Qi Chang , Patrick D. Byrnes , Danish Ahmad , Jennifer Toth , Rebecca Bascom , William E. Higgins

Detection of visual anomalies refers to the problem of finding patterns in different imaging data that do not conform to the expected visual appearance and is a widely studied problem in different domains. Due to the nature of anomaly…

Image and Video Processing · Electrical Eng. & Systems 2021-04-29 Dejan Stepec , Danijel Skocaj

Objective: The computation of anatomical information and laparoscope position is a fundamental block of surgical navigation in Minimally Invasive Surgery (MIS). Recovering a dense 3D structure of surgical scene using visual cues remains a…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Ruofeng Wei , Bin Li , Hangjie Mo , Bo Lu , Yonghao Long , Bohan Yang , Qi Dou , Yunhui Liu , Dong Sun

Accurate and automated gland segmentation on pathological images can assist pathologists in diagnosing the malignancy of colorectal adenocarcinoma. However, due to various gland shapes, severe deformation of malignant glands, and…

Image and Video Processing · Electrical Eng. & Systems 2024-05-10 Huadeng Wang , Jiejiang Yu , Bingbing Li , Xipeng Pan , Zhenbing Liu , Rushi Lan , Xiaonan Luo

Conventional Endoscopy (CE) and Wireless Capsule Endoscopy (WCE) are known tools for diagnosing gastrointestinal (GI) tract disorders. Detecting the anatomical location of GI tract can help clinicians to determine a more appropriate…

Computer Vision and Pattern Recognition · Computer Science 2021-08-23 Mohammad Reza Mohebbian , Khan A. Wahid , Anh Dinh , Paul Babyn

Tracking of rotation and translation of medical instruments plays a substantial role in many modern interventions. Traditional external optical tracking systems are often subject to line-of-sight issues, in particular when the region of…

Computer Vision and Pattern Recognition · Computer Science 2018-06-13 Benjamin Busam , Patrick Ruhkamp , Salvatore Virga , Beatrice Lentes , Julia Rackerseder , Nassir Navab , Christoph Hennersperger

A deep learning-based monocular depth estimation (MDE) technique is proposed for selection of most informative frames (key frames) of an endoscopic video. In most of the cases, ground truth depth maps of polyps are not readily available and…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Pradipta Sasmal , Avinash Paul , M. K. Bhuyan , Yuji Iwahori

Accurately estimating the pose of an object is a crucial task in computer vision and robotics. There are two main deep learning approaches for this: geometric representation regression and iterative refinement. However, these methods have…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Jaewoo Park , Jaeguk Kim , Nam Ik Cho

Robot-assisted endoluminal procedures are increasingly used for early cancer intervention. However, the intricate, narrow and tortuous pathways within the luminal anatomy pose substantial difficulties for robot navigation. Vision-based…

Robotics · Computer Science 2026-03-10 Junyang Wu , Fangfang Xie , Minghui Zhang , Hanxiao Zhang , Jiayuan Sun , Yun Gu , Guang-Zhong Yang

Vision-based 6-DOF bronchoscopy localization offers a promising solution for accurate and cost-effective interventional guidance. However, existing methods struggle with 1) limited generalization across patient cases due to scarce labeled…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Qingyao Tian , Huai Liao , Xinyan Huang , Bingyu Yang , Hongbin Liu

The endoscopic camera of a surgical robot provides surgeons with a magnified 3D view of the surgical field, but repositioning it increases mental workload and operation time. Poor camera placement contributes to safety-critical events when…

Robotics · Computer Science 2023-01-20 Kay Hutchinson , Mohammad Samin Yasar , Harshneet Bhatia , Homa Alemzadeh

We propose a new approach to 3D reconstruction from sequences of images acquired by monocular endoscopes. It is based on two key insights. First, endoluminal cavities are watertight, a property naturally enforced by modeling them in terms…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Víctor M. Batlle , José M. M. Montiel , Pascal Fua , Juan D. Tardós

Laparoscopic surgery has a limited field of view. Laser ablation in a laproscopic surgery causes smoke, which inevitably influences the surgeon's visibility. Therefore, it is of vital importance to remove the smoke, such that a clear…

Computer Vision and Pattern Recognition · Computer Science 2018-12-31 Congcong Wang , Vivek Sharma , Yu Fan , Faouzi Alaya Cheikh , Azeddine Beghdadi , Ole Jacob Elle , Rainer Stiefelhagen

Lung cancer has been one of the major threats across the world with the highest mortalities. Computer-aided detection (CAD) can help in early detection and thus can help increase the survival rate. Accurate lung parenchyma segmentation (to…

Image and Video Processing · Electrical Eng. & Systems 2025-09-18 Muhammad Abdullah , Furqan Shaukat

Many critical healthcare decisions are challenged by the inability to measure key underlying parameters. Glaucoma, a leading cause of irreversible blindness driven by elevated intraocular pressure (IOP), provides a stark example. The…

Machine Learning · Computer Science 2025-09-18 Md Rezwan Jaher , Abul Mukid Mohammad Mukaddes , A. B. M. Abdul Malek

Semi-supervised image classification has shown substantial progress in learning from limited labeled data, but recent advances remain largely untested for clinical applications. Motivated by the urgent need to improve timely diagnosis of…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Zhe Huang , Gary Long , Benjamin Wessler , Michael C. Hughes

Background: Impedance Cardiogram (ICG) has impressive number of applications in healthcare. However, its wider adoption is excessively limited due to the well recognized challenges in ICG delineation. We present a simple, adaptive, and…

Signal Processing · Electrical Eng. & Systems 2023-05-26 Nadica Miljković , Tomislav B. Šekara