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Related Concept Videos

Absolute Motion Analysis- General Plane Motion01:24

Absolute Motion Analysis- General Plane Motion

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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...
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Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

559
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...
559
Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

415
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. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
415
Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

451
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
451
Relative Motion Analysis - Velocity01:24

Relative Motion Analysis - Velocity

456
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
456
Deconvolution01:20

Deconvolution

271
Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
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Related Experiment Video

Updated: Sep 28, 2025

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
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Hyperspectral Video Analysis by Motion and Intensity Preprocessing and Subspace Autoencoding.

Raffaele Vitale1, Cyril Ruckebusch1, Ingunn Burud2

  • 1Univ. Lille, CNRS, LASIRE (UMR 8516), Laboratoire Avancé de Spectroscopie pour les Interactions, la Réactivité et l'Environnement, Lille, France.

Frontiers in Chemistry
|April 4, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for analyzing hyperspectral videos, which are large datasets. The framework effectively reduces data size and extracts valuable chemical and physical information from dynamic processes like drying wood.

Keywords:
BIG measurement DATAIDLE modellingextended multiplicative signal correctionhyperspectral videoslight absorptionlight scatteringmotion compensationon-the-fly processing

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Area of Science:

  • Multivariate data analysis
  • Chemometrics
  • Spectroscopy

Background:

  • Hyperspectral imaging provides spatial and physico-chemical data.
  • Hyperspectral videos are underutilized due to large data size (Big Data) and complex variations.
  • Standard chemometric techniques require adaptation for hyperspectral video analysis.

Purpose of the Study:

  • To develop a multivariate hybrid modelling framework for analyzing hyperspectral videos.
  • To address challenges in processing large datasets and disentangling chemical and physical variations.
  • To monitor dynamic processes using spatial, spectral, and temporal information.

Main Methods:

  • Optical flow analysis for motion estimation and compensation.
  • Extended Multiplicative Signal Correction (EMSC) to separate chemical and physical variations.
  • On-The-Fly Processing for spectral, spatial, and temporal data summarization.

Main Results:

  • The developed framework significantly reduced the size of hyperspectral video data.
  • Valuable information on systematic variations related to monitored phenomena was extracted.
  • The method was successfully tested on a near-infrared hyperspectral video of drying wood.

Conclusions:

  • The proposed hybrid modelling framework is effective for hyperspectral video analysis.
  • This approach enables efficient processing and interpretation of complex dynamic systems.
  • It offers a pathway for broader application of hyperspectral videos in monitoring and research.