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Related Concept Videos

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...
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 - Velocity01:24

Relative Motion Analysis - Velocity

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

Relative Motion Analysis using Rotating Axes - Acceleration

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...
Curvilinear Motion: Rectangular Components01:23

Curvilinear Motion: Rectangular Components

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 time...
Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

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...

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Related Experiment Video

Updated: May 9, 2026

Combining Eye-tracking Data with an Analysis of Video Content from Free-viewing a Video of a Walk in an Urban Park Environment
08:25

Combining Eye-tracking Data with an Analysis of Video Content from Free-viewing a Video of a Walk in an Urban Park Environment

Published on: May 7, 2019

Content-aware video retargeting using object-preserving warping.

Shih-Syun Lin1, Chao-Hung Lin, I-Cheng Yeh

  • 1Department of Computer Science and Information Engineering, National Cheng Kung University, No. 1 Daxue Rd., East Dist., Tainan 701, Taiwan, R.O.C. catchylss@hotmail.com

IEEE Transactions on Visualization and Computer Graphics
|August 10, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces a new video retargeting method that preserves important objects and motion. The approach adapts videos for different screens, reducing distortions on salient content for better visual quality.

Related Experiment Videos

Last Updated: May 9, 2026

Combining Eye-tracking Data with an Analysis of Video Content from Free-viewing a Video of a Walk in an Urban Park Environment
08:25

Combining Eye-tracking Data with an Analysis of Video Content from Free-viewing a Video of a Walk in an Urban Park Environment

Published on: May 7, 2019

Area of Science:

  • Computer Vision
  • Image Processing
  • Multimedia Systems

Background:

  • Traditional video retargeting often distorts visually salient objects due to uniform resizing.
  • Maintaining temporal coherence and object integrity during aspect ratio adaptation is challenging.

Purpose of the Study:

  • To develop a novel content-aware warping approach for video retargeting.
  • To preserve visually salient content and temporal coherence across various display sizes and aspect ratios.
  • To minimize distortions on important objects during video adaptation.

Main Methods:

  • Implemented an object-preserving warping scheme utilizing object-based significance estimation.
  • Applied as-rigid-as-possible warping to visually salient objects in 3D space-time.
  • Used linear rescaling for low-significance content to avoid over-deformation.

Main Results:

  • Successfully preserved spatial shapes and temporal motions of salient objects.
  • Avoided over-deformations on low-significance objects, enhancing visual appeal.
  • Demonstrated superiority over existing methods through qualitative and quantitative analyses, including user studies.

Conclusions:

  • The proposed method effectively addresses limitations of previous video retargeting techniques.
  • Achieved superior motion-aware video retargeting with enhanced object preservation.
  • Offers a robust solution for adapting videos to diverse display requirements.