Jove
Visualize
Contact Us

Related Concept Videos

Absolute Motion Analysis- General Plane Motion01:24

Absolute Motion Analysis- General Plane Motion

252
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
252
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

435
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...
435
Unsymmetric Bending - Angle of Neutral Axis01:15

Unsymmetric Bending - Angle of Neutral Axis

391
Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
391
Phase Changes01:19

Phase Changes

4.4K
Phase transitions play an important theoretical and practical role in the study of heat flow. In melting or fusion, a solid turns into a liquid; the opposite process is freezing. In evaporation, a liquid turns into a gas; the opposite process is condensation.
A substance melts or freezes at a temperature called its melting point and boils or condenses at its boiling point. These temperatures depend on pressure. High pressure favors the denser form of the substance, so typically, high pressure...
4.4K
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

505
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...
505
Curvilinear Motion: Rectangular Components01:23

Curvilinear Motion: Rectangular Components

526
Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
526

You might also read

Related Articles

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

Sort by
Same author

Single Shot High-Accuracy Diameter at Breast Height Measurement with Smartphone Embedded Sensors.

Sensors (Basel, Switzerland)·2025
Same author

Human Respiration Rate Measurement with High-Speed Digital Fringe Projection Technique.

Sensors (Basel, Switzerland)·2023
See all related articles
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 Experiment Video

Updated: Aug 15, 2025

Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
09:04

Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

Published on: February 23, 2018

9.5K

Semi-Global Matching Assisted Absolute Phase Unwrapping.

Yi-Hong Liao1, Song Zhang1

  • 1School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA.

Sensors (Basel, Switzerland)
|January 8, 2023
PubMed
Summary

This study introduces a novel absolute phase unwrapping method for high-speed 3D shape measurement. It uses three speckle patterns to quickly and accurately capture dynamic scenes, reducing motion artifacts.

Keywords:
3D reconstructionSemi-Global Matchingdigital image correlationhigh speedphase unwrappingphase-shifting

More Related Videos

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

10.4K
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

9.9K

Related Experiment Videos

Last Updated: Aug 15, 2025

Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
09:04

Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

Published on: February 23, 2018

9.5K
Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

10.4K
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

9.9K

Area of Science:

  • Optics and Photonics
  • Computer Vision
  • Metrology

Background:

  • Dynamic scene capture requires fast measurement speeds to minimize motion artifacts.
  • Phase-shifting methods offer high accuracy and dense 3D point clouds but are limited by phase unwrapping speed.
  • Existing methods struggle with high-speed 3D shape measurement of dynamic scenes.

Purpose of the Study:

  • To develop a high-speed absolute phase unwrapping method for 3D shape measurement.
  • To enable accurate dynamic scene capture using a single-camera, single-projector structured light system.
  • To reduce motion artifacts in 3D measurements by increasing speed.

Main Methods:

  • Utilized a single-camera, single-projector structured light system.
  • Employed three speckle-embedded phase-shifted patterns for data acquisition.
  • Applied the Semi-Global Matching (SGM) algorithm for coarse correspondence.
  • Developed a computational framework for pixel-by-pixel fringe order determination.

Main Results:

  • Achieved high-speed 3D shape measurement using only three phase-shifted patterns.
  • Successfully obtained wrapped phase from speckle-embedded patterns.
  • Established coarse correspondence between object and reference images using SGM.
  • Demonstrated high-quality 3D measurements of complex scenes in experiments.

Conclusions:

  • The proposed absolute phase unwrapping method significantly enhances measurement speed.
  • The technique effectively reduces motion artifacts in dynamic scene capture.
  • This approach offers a viable solution for high-speed, high-quality 3D shape measurement.