Results 141 to 150 of about 30,575 (187)

An MRI-powered and controlled actuator technology for tetherless robotic interventions

, 2013
Barth HV, Lewin JS, McNab JA, Tokuda J, van der Weide R   +4 more
core   +1 more source

Volumetric analysis of artifacts from fiducial markers under cone beam computed tomography. [PDF]

J Dent Sci
Kuo HY, Lin KL, Hsu CY, Fu PS, Hung CC, Song SJ.   +5 more
europepmc   +1 more source

Comparison of CT artifacts and image recognition of various fiducial markers including two types of thinner fiducial markers for CyberKnife treatment. [PDF]

Rep Pract Oncol Radiother, 2020
Suzuki T, Saito M, Onishi H, Mochizuki K, Satani K, Yamazaki A, Miura K, Taka S, Sano N, Komiyama T, Takahashi H.   +10 more
europepmc   +1 more source

Dose reduction potential of using gold fiducial markers for kilovoltage image-guided radiotherapy. [PDF]

J Appl Clin Med Phys, 2020
Takei Y, Monzen H, Tamura M, Doi H, Nishimura Y.   +4 more
europepmc   +1 more source

Does a novel 3D printed individualized guiding template based on cutaneous fiducial markers contribute to accurate percutaneous insertion of pelvic screws? A preliminary phantom and cadaver study. [PDF]

BMC Surg
Tao X, Lyu F, Sugand K, Zhou K, Wang H.
europepmc   +1 more source

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Designing Highly Reliable Fiducial Markers

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2010
Fiducial markers are artificial landmarks added to a scene to facilitate locating point correspondences between images, or between images and a known model. Reliable fiducials solve the interest point detection and matching problems when adding markers is convenient. The proper design of fiducials and the associated computer vision algorithms to detect
openaire   +4 more sources

Speeded up detection of squared fiducial markers

Image and Vision Computing, 2018
Squared planar markers have become a popular method for pose estimation in applications such as autonomous robots, unmanned vehicles and virtual trainers. The markers allow estimating the position of a monocular camera with minimal cost, high robustness, and speed.
Romero-Ramirez, Francisco J., Muñoz-Salinas, Rafael, Medina-Carnicer, Rafael   +2 more
openaire   +4 more sources

Fiducial Markers for Pose Estimation

Journal of Intelligent & Robotic Systems, 2021
Michail Kalaitzakis, Brennan Cain, Sabrina Carroll, Anand Ambrosi, Camden Whitehead, Nikolaos Vitzilaios   +5 more
openaire   +3 more sources

Marker orientation in fiducial registration

SPIE Proceedings, 2003
Fiducial markers are often employed in image-guided surgical procedures to provide positional information based on pre-operative images. In the standard technique, centroids of three or more markers are localized in both image space and physical space. The localized positions are used in a closed-form algorithm to determine the three-dimensional rigid ...
Xiaofeng Liu, Hakan Cevikalp, J. Michael Fitzpatrick   +2 more
openaire   +1 more source

Augmented reality without fiducial markers

2015 20th Symposium on Signal Processing, Images and Computer Vision (STSIVA), 2015
This work presents an implementation of an augmented reality system that does not use fiducial markers for neither estimating the camera pose nor inserting a virtual object but natural marks such as corners of objects that are present in the scene. The system uses a RGB-D dataset for positioning the camera which moves with 6 DOF, for defining a work ...
Andres Diaz, Sebastian Caicedo, Eduardo Caicedo   +2 more
openaire   +1 more source