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Related Concept Videos

Stereoisomerism02:52

Stereoisomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Stereoisomers02:32

Stereoisomers

On the basis of mirror symmetry, stereoisomers of an organic molecule can be further classified into diastereomers and enantiomers. Diastereomers are stereoisomers that are not mirror images of each other. Substituted alkenes, such as the cis and trans isomers of 2-butene, are diastereomers, as these molecules exhibit different spatial orientations of their constituent atoms, are not mirror images of each other, and do not interconvert. Here, the interconversion is suppressed due to restricted...
Stereoisomerism of Cyclic Compounds02:33

Stereoisomerism of Cyclic Compounds

In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
Transformation of Plane Strain01:12

Transformation of Plane Strain

When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
Plastic Deformation in Circular Shafts01:20

Plastic Deformation in Circular Shafts

When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...

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Related Experiment Video

Updated: May 8, 2026

Quantification of Strain in a Porcine Model of Skin Expansion Using Multi-View Stereo and Isogeometric Kinematics
14:14

Quantification of Strain in a Porcine Model of Skin Expansion Using Multi-View Stereo and Isogeometric Kinematics

Published on: April 16, 2017

Stereo seam carving a geometrically consistent approach.

Tali Dekel Basha1, Yael Moses, Shai Avidan

  • 1Department of Electrical Engineering, School of Electrical Engineering, Tel-Aviv University, Tel-Aviv, Israel. talib@eng.tau.ac.il

IEEE Transactions on Pattern Analysis and Machine Intelligence
|August 24, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for stereo image retargeting, extending single-image techniques to maintain 3D structure. The approach minimizes visual and depth distortions for consistent stereo pairs.

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Area of Science:

  • Computer Vision
  • Image Processing
  • Computer Graphics

Background:

  • Existing image retargeting methods focus on single images.
  • Independent retargeting of stereo images distorts 3D structure and perception.
  • Maintaining geometric consistency in stereo image retargeting is crucial.

Purpose of the Study:

  • To propose a novel method for retargeting stereo image pairs.
  • To extend single-image seam carving techniques for stereo image retargeting.
  • To minimize visual and depth distortions while preserving 3D geometric consistency.

Main Methods:

  • Extending single-image seam carving to stereo image pairs.
  • Minimizing visual distortion in individual images.
  • Minimizing depth distortion between stereo images.
  • Incorporating pixel visibility relations (occlusion) into the retargeting process.

Main Results:

  • The proposed method successfully retargets stereo image pairs.
  • Minimizes both visual and depth distortions.
  • Guarantees geometric consistency of the retargeted stereo pair.
  • The retargeted pairs are suitable for stereoscopic display and further computer vision processing.

Conclusions:

  • The novel method effectively addresses the challenge of stereo image retargeting.
  • It preserves the 3D geometric structure and perceptual quality of stereo scenes.
  • The approach is formally proven to yield geometrically consistent results.