Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Spherical Coordinates01:23

Spherical Coordinates

Spherical coordinate systems are preferred over Cartesian, polar, or cylindrical coordinates for systems with spherical symmetry. For example, to describe the surface of a sphere, Cartesian coordinates require all three coordinates. On the other hand, the spherical coordinate system requires only one parameter: the sphere's radius. As a result, the complicated mathematical calculations become simple. Spherical coordinates are used in science and engineering applications like electric and...
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it instrumental in...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Strain-induced fully coherent triphase nanoarchitecture in refractory high-entropy alloys.

Science (New York, N.Y.)ยท2026
Same author

Low-altitude economy: next frontier in spatial exploration and economic development.

National science reviewยท2026
Same author

Efficacy and Safety of Secukinumab in Enthesitis-Related Arthritis: A Retrospective Study in China.

International journal of rheumatic diseasesยท2026
Same author

EXO70A1 governs both the timing and patterning of secondary cell wall deposition: evidence from an <i>in vitro</i> tracheary element system for individual-cell imaging.

Frontiers in plant scienceยท2026
Same author

Gastric cancer-secreted galectin-1 promotes peritoneal mesothelial-mesenchymal transition to prime peritoneal metastasis soil.

iScienceยท2026
Same author

Development of a Phase 1 Cryptosporidiosis Controlled Human Challenge Model in Healthy Volunteers Using Current Good Manufacturing Practice Cryptosporidium Parvum Oocysts and Conducted Under an Investigational New Drug Application.

The Journal of infectious diseasesยท2026
Same journal

RETRACTED: Zhang et al. A Novel Framework for Reconstruction and Imaging of Target Scattering Centers via Wide-Angle Incidence in Radar Networks. <i>Sensors</i> 2025, <i>25</i>, 6802.

Sensors (Basel, Switzerland)ยท2026
Same journal

Enhancing Unsupervised Multi-Source Domain Adaptation for Person Re-Identification via Mixture of Experts and Graph-Based Relation.

Sensors (Basel, Switzerland)ยท2026
Same journal

Development of an Instrumented Glove for Palmar Pressure Assessment in Kayakers.

Sensors (Basel, Switzerland)ยท2026
Same journal

Development and Experimental Validation of an Autonomous IoT-Based Monitoring System for Real-Time Water Quality Assessment in the Amazon River.

Sensors (Basel, Switzerland)ยท2026
Same journal

Semi-Supervised Adversarial Learning Framework for Controller Area Network Bus Intrusion Detection.

Sensors (Basel, Switzerland)ยท2026
Same journal

Smart Optimization Method for Safety Signs in Innovative Manufacturing Environments Integrating Industrial Field IoT Sensors and Knowledge Graphs.

Sensors (Basel, Switzerland)ยท2026
See all related articles

Related Experiment Video

Updated: May 28, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
07:24

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

Published on: August 22, 2025

Monocular Visual Pose Estimation Method Based on Spherical Cooperative Target.

Yanyu Ding1,2, Chaoran Zhang1,2, Yongbin Zhang3

  • 1School of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.

Sensors (Basel, Switzerland)
|May 27, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a new framework for spherical target construction and pose estimation, improving accuracy and robustness in visual measurement. The method enhances cooperative target pose estimation, especially with sparse features and changing viewpoints.

Keywords:
PnPmonocular visual measurementnonlinear optimizationpose estimationspherical targetstereo triangulation

Related Experiment Videos

Last Updated: May 28, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
07:24

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane

Published on: August 22, 2025

Area of Science:

  • Computer Vision
  • Robotics
  • Metrology

Background:

  • Conventional planar targets for visual measurement suffer from viewpoint changes and distortion.
  • Spherical targets offer omnidirectional observability but PnP-based pose estimation can be error-prone with limited views or sparse features.

Purpose of the Study:

  • To develop an integrated framework for high-precision spherical target construction and robust pose estimation.
  • To overcome limitations of existing methods in close-range monocular visual measurement and cooperative target pose estimation.

Main Methods:

  • Designed a composite marker layout with adaptively scaled latitude-longitude topology.
  • Developed a center-to-pole point-cloud stitching strategy and fused multi-view observations for accurate target coordinate system reconstruction.
  • Proposed a joint optimization method combining reprojection error with contour center consistency and introduced an SQPnP-based reinitialization mechanism.

Main Results:

  • The proposed method demonstrated higher accuracy and robustness compared to EPnP, EPnP+LM, LM, and SQPnP in simulations.
  • Achieved superior performance under continuous pose changes, sparse feature points, and varying noise levels.
  • Real-image experiments confirmed the practical feasibility of the integrated framework.

Conclusions:

  • The integrated framework provides a significant advancement in spherical target-based visual measurement and pose estimation.
  • The method offers enhanced accuracy, robustness, and practical applicability for cooperative target pose estimation tasks.