Results 11 to 20 of about 12,897 (254)

Order type dataset analysis for fiducial markers

Data in Brief, 2018
Order Type (OT) describes a point set avoiding the use of metric information. We show that OT is a descriptor which is invariant to Euclidean geometric transformations, change of scale and perspective projection. In this paper we provide the data related
Heriberto Cruz Hernández, Luis Gerardo de la Fraga   +1 more
doaj   +3 more sources

Fiducial Objects: Custom Design and Evaluation

Sensors, 2023
Camera pose estimation is vital in fields like robotics, medical imaging, and augmented reality. Fiducial markers, specifically ArUco and Apriltag, are preferred for their efficiency.
Pablo García-Ruiz, Francisco J. Romero-Ramirez, Rafael Muñoz-Salinas, Manuel J. Marín-Jiménez, Rafael Medina-Carnicer   +4 more
doaj   +1 more source

Impact of Fiducial Marker Placement Before Stereotactic Body Radiation Therapy on Clinical Outcomes in Patients With Pancreatic Cancer

Advances in Radiation Oncology, 2021
Purpose: Localized pancreatic cancer is commonly treated with stereotactic body radiation therapy (SBRT), which often requires the placement of fiducial markers. We compared the clinical outcomes of patients with and without fiducial markers. Methods and
Shalini Moningi, MD, Joseph Abi Jaoude, MD, Ramez Kouzy, MD, Daniel Lin, BA, Nicholas D. Nguyen, BA, Carolina J. Garcia Garcia, BS, Jae L. Phan, BA, Santiago Avila, BA, Daniel Smani, BA, Irina M. Cazacu, MD, Ben S. Singh, BA, Grace L. Smith, MD, PhD, MPH, Emma B. Holliday, MD, Eugene J. Koay, MD, PhD, Prajnan Das, MD, MS, MPH, Manoop S. Bhutani, MD, Joseph M. Herman, MD, MSc, MSHM, Bruce D. Minsky, MD, Albert C. Koong, MD, PhD, Cullen M. Taniguchi, MD, PhD   +19 more
doaj   +1 more source

Planar fiducial markers: a comparative study

Virtual Reality, 2023
Fiducial markers are a cost-effective solution for solving labeling and monocular localization problems, making them valuable tools for Augmented Reality (AR), robot navigation, and 3D modeling applications. However, with the development of many marker detection systems in the last decade, it has become challenging for new users to determine which is ...
David Jurado-Rodríguez, Rafael Muñoz-Salinas, Sergio Garrido-Jurado, Rafael Medina Carnicer   +3 more
openaire   +2 more sources

STag: A stable fiducial marker system [PDF]

Image and Vision Computing, 2019
Fiducial markers provide better-defined features than the ones naturally available in the scene. For this reason, they are widely utilized in computer vision applications where reliable pose estimation is required. Factors such as imaging noise and subtle changes in illumination induce jitter on the estimated pose.
Burak Benligiray, Cihan Topal, Cuneyt Akinlar   +2 more
openaire   +2 more sources

Accuracy and consistency of intensity-based deformable image registration in 4DCT for tumor motion estimation in liver radiotherapy planning.

PLoS ONE, 2022
We investigate the accuracy of intensity-based deformable image registration (DIR) for tumor localization in liver stereotactic body radiotherapy (SBRT).
José D Tascón-Vidarte, Line Bjerregaard Stick, Mirjana Josipovic, Signe Risum, Julien Jomier, Kenny Erleben, Ivan Richter Vogelius, Sune Darkner   +7 more
doaj   +1 more source

MechaTag: A Mechanical Fiducial Marker and the Detection Algorithm [PDF]

Journal of Intelligent & Robotic Systems, 2021
AbstractFiducial markers are fundamental components of many computer vision systems that help, through their unique features (e.g., shape, color), a fast localization of spatial objects in unstructured scenarios. They find applications in many scientific and industrial fields, such as augmented reality, human-robot interaction, and robot navigation. In
Francesca Digiacomo, Francesco Bologna, Francesco Inglese, Cesare Stefanini, Mario Milazzo   +4 more
openaire   +2 more sources

Efficacy and safety of ultrasound-guided implantation of fiducial markers in the liver for stereotactic body radiation therapy. [PDF]

PLoS ONE, 2017
Stereotactic body radiation therapy (SBRT) for the treatment of a malignancy in the liver requires the perilesional implantation of fiducial markers for lesion detection. The purpose of this study is to evaluate the efficacy and safety of ultrasound (US)
So Hyun Park, Hyung Jin Won, So Yeon Kim, Yong Moon Shin, Pyo Nyun Kim, Sang Min Yoon, Jin-Hong Park, Jong Hoon Kim   +7 more
doaj   +1 more source

EUS-guided placement of fiducial markers for stereotactic body radiation therapy in pancreatic cancer: feasibility, security and a new quality score

Endoscopy International Open, 2021
Background and study aims In borderline resectable/locally advanced pancreatic ductal adenocarcinoma (PDAC), stereotactic body radiation therapy (SBRT) is an emerging neoadjuvant treatment option.
Mariana Figueiredo, Christelle Bouchart, Luigi Moretti, Laura Mans, Jean-Luc Engelholm, Maria-Antonietta Bali, Jean-Luc Van Laethem, Pierre Eisendrath   +7 more
doaj   +1 more source

Application of Ghost-DeblurGAN to Fiducial Marker Detection

2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2022
Feature extraction or localization based on the fiducial marker could fail due to motion blur in real-world robotic applications. To solve this problem, a lightweight generative adversarial network, named Ghost-DeblurGAN, for real-time motion deblurring is developed in this paper.
Yibo Liu, Amaldev Haridevan, Hunter Schofield, Jinjun Shan   +3 more
openaire   +2 more sources