Results 91 to 100 of about 13,791 (206)

Deep learning‐based CNN method for fiducial marker detection in kilovoltage X‐ray images for liver tumor motion monitoring

open access: yesMedical Physics, Volume 53, Issue 10, October 2026.
Abstract Background During radiation therapy, liver tumor motion can reduce dose delivery accuracy and increase irradiation of adjacent healthy tissues. Because liver tumors are difficult to visualize directly on kilovoltage (kV) X‐ray images, fiducial markers are commonly implanted as surrogates for tumor position during treatment. Conventional marker‐
Frances Kan   +12 more
wiley   +1 more source

Hybrid markerless augmented reality tracking method for planar surface

open access: yes, 2013
Markerless tracking for augmented reality should not only accurate but also fast enough to provide a seamless synchronization between real and virtual beings. Current methods showed that a vision-based tracking is accurate but requires high computational
Afif, Fadhil Noer
core  

Underwater gait analysis: a markerless approach

open access: yes, 2022
The technology that supports human motion analysis has advanced significantly in the past two decades. Gait analysis has become a well established paradigm for the diagnosis of the patho-mechanics related to musculoskeletal diseases, and for the ...
Mantoan, Alice
core  

Parallelization strategies for markerless human motion capture

open access: yesJournal of Real-Time Image Processing, 2014
Markerless Motion Capture (MMOCAP) is the problem of determining the pose of a person from images captured by one or several cameras simultaneously without using markers on the subject. Evaluation of the solutions is frequently the most time-consuming task, making most of the proposed methods inapplicable in real-time scenarios.
Cano, Alberto   +4 more
openaire   +4 more sources

Prospective Head Motion Correction in T1‐ and T2‐Weighted Long Echo Train Sequences Using Servo Navigation

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 4, Page 1741-1754, October 2026.
ABSTRACT Purpose To integrate MR‐based servo navigation in MPRAGE and 3D‐TSE sequences and demonstrate its potential for prospective head motion correction in structural imaging. Methods Repeated modules of servo navigators were inserted before each preparation pulse of MPRAGE and 3D‐TSE sequences (before‐prep) for rapid convergence of motion parameter
Matthias Serger   +7 more
wiley   +1 more source

A Methodology for Multi-Camera Surface-Shape Estimation of Deformable Unknown Objects

open access: yesRobotics, 2018
A novel methodology is proposed herein to estimate the three-dimensional (3D) surface shape of unknown, markerless deforming objects through a modular multi-camera vision system.
Evgeny Nuger, Beno Benhabib
doaj   +1 more source

Markerless body part tracking for action recognition

open access: yesInternational Journal of Multimedia Intelligence and Security, 2010
This paper presents a method for recognising human actions by tracking body parts without using artificial markers. A sophisticated appearance-based tracking able to cope with occlusions is exploited to extract a probability map for each moving object.
CALDERARA, Simone   +2 more
openaire   +5 more sources

Experimental Comparison of Ground Plane Detection Speed Across Mobile Platforms

open access: yesJournal of Applied Informatics and Computing
Markerless Augmented Reality (AR) technology has become increasingly important in various applications, yet its performance varies significantly across different platforms. This study conducts a comparative experimental analysis of ground plane detection
Laura Ladiesga, Caraka Aji Pranata
doaj   +1 more source

Exploring stroke survivors' and physiotherapists' perspectives of the potential for markerless motion capture technology in community rehabilitation [PDF]

open access: yes
IntroductionMany stroke survivors do not receive optimal levels of personalised therapy to support their recovery. Use of technology for stroke rehabilitation has increased in recent years to help minimise gaps in service provision.
Faux-Nightingale, Alice   +9 more
core   +1 more source

Development of a gene-editing strategy to overcome genetic intractability in Lactobacillus johnsonii

open access: yesJournal of Bacteriology
Genetic editing in lactobacilli is often constrained by their robust defense mechanisms against foreign DNA and low transformation efficiency, resulting in pronounced species- and strain-specific variability in the performance of genetic tools.
Keerthikka Ravi   +2 more
doaj   +1 more source

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