Results 231 to 240 of about 12,897 (254)

Classification of Fiducial Markers in Challenging Conditions with SVM

2017
Square fiducial markers are a popular tool for camera pose estimation because of their high robustness and performance. However, state-of-the-art methods perform poorly under difficult image conditions, such as camera defocus, motion blur, small scale or non-uniform lighting. This paper tackles the marker identification problem as a classification one,
Víctor Manuel Mondéjar-Guerra, Sergio Garrido-Jurado, Rafael Muñoz-Salinas, Manuel J. Marín-Jiménez, Rafael Medina Carnicer   +4 more
openaire   +1 more source

Using dynamic programming to improve fiducial marker localization

Physics in Medicine and Biology, 2014
Fiducial markers are used in a wide range of medical imaging applications. In radiation therapy, they are often implanted near tumors and used as motion surrogates that are tracked with fluoroscopy. We propose a novel and robust method based on dynamic programming (DP) for retrospectively localizing radiopaque fiducial markers in fluoroscopic images ...
Hanlin, Wan, Jiajia, Ge, Parag, Parikh
openaire   +2 more sources

On The Visibility Of Fiducial Markers For Mobile Eye Tracking

2023 Symposium on Eye Tracking Research and Applications, 2023
Naila Ayala, Diako Mardanbegi, Andrew T. Duchowski, Ewa Niechwiej-Szwedo, Shi Cao, Suzanne K. Kearns, Elizabeth L. Irving   +6 more
openaire   +1 more source

Fiducial Marker Tracking System

2022
openaire   +1 more source

Deformation of Prostate and Seminal Vesicles Relative to Intraprostatic Fiducial Markers

International Journal of Radiation Oncology Biology Physics, 2008
Gérard J Van Der Wielen, Luca Incrocci, Eliana Vásquez Osório   +2 more
exaly  

Fiducial Marker SLAM for Extraterrestrial Localization

Satellite-based navigation is currently unavailable around the Moon or Mars due to prohibitive initial costs. For early robotic construction in these environments, absolute site localization is essential for coordinated operations and precise execution of building plans.
openaire   +1 more source

Estimation of microscope drift using fluorescent nanodiamonds as fiducial markers

Journal of Microscopy, 2017
Susanta K Sarkar
exaly  

Improvement in Interobserver Accuracy in Delineation of the Lumpectomy Cavity Using Fiducial Markers

International Journal of Radiation Oncology Biology Physics, 2010
Talha Shaikh, Atif J Khan, Ning J Yue
exaly  

Implantation of fiducial markers in the liver for stereotactic body radiation therapy: Feasibility and results

Diagnostic and Interventional Imaging, 2015
G Oldrini
exaly  

Intra-fraction prostate displacement in radiotherapy estimated from pre- and post-treatment imaging of patients with implanted fiducial markers

Radiotherapy and Oncology, 2010
Tomáš Kron, Rebecca Owen, Annette Haworth   +2 more
exaly