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Related Concept Videos

Stereoisomers02:32

Stereoisomers

19.4K
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...
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Stereoisomerism02:52

Stereoisomerism

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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...
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Fischer Projections02:18

Fischer Projections

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Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines. While...
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Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

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Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
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Stereoisomerism of Cyclic Compounds02:33

Stereoisomerism of Cyclic Compounds

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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,...
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Related Experiment Video

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Photorealistic Learned Landscapes for Augmented Reality
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Fast phase-added stereogram algorithm for generation of photorealistic 3D content.

Hoonjong Kang, Elena Stoykova, Hiroshi Yoshikawa

    Applied Optics
    |February 3, 2016
    PubMed
    Summary
    This summary is machine-generated.

    A novel phase-added stereogram algorithm accelerates hologram computation from point clouds. This method enhances reconstruction quality and signal-to-noise ratio for 3D content generation.

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    Area of Science:

    • Optics and Photonics
    • Computer Graphics
    • Computational Imaging

    Background:

    • Hologram computation from point cloud models is computationally intensive.
    • Existing algorithms may suffer from reconstruction quality limitations.

    Purpose of the Study:

    • To propose a new phase-added stereogram algorithm for accelerated hologram computation.
    • To improve the quality of reconstructed holograms.

    Main Methods:

    • Hologram segmentation and directional information sampling.
    • Fast Fourier Transform (FFT) with a finer grid in the spatial frequency domain.
    • Introduction of phase compensation in segment fringe patterns.

    Main Results:

    • Achieved accelerated computation of holograms.
    • Demonstrated improved reconstruction quality with higher peak intensity.
    • Obtained a large peak signal-to-noise ratio in reconstructions.
    • Successfully generated 3D content for a color wavefront printer.

    Conclusions:

    • The proposed phase-added stereogram algorithm offers an efficient and effective method for hologram computation.
    • The algorithm's phase compensation technique enhances beam steering and reconstruction fidelity.
    • Validated feasibility for generating complex 3D visual content.