Jove
Visualize
Contact Us
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 Concept Videos

Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next sampling...
Two-Dimensional (2D) NMR: Overview01:12

Two-Dimensional (2D) NMR: Overview

The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse.
Aliasing01:18

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original signal...
Upsampling01:22

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
Downsampling01:20

Downsampling

When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
2D NMR: Overview of Homonuclear Correlation Techniques01:16

2D NMR: Overview of Homonuclear Correlation Techniques

Homonuclear correlation spectroscopy (COSY) is a powerful technique used in Nuclear Magnetic Resonance (NMR) spectroscopy to study the correlations between nuclei of the same type within a molecule. It provides information about scalar couplings between adjacent nuclei, which helps determine connectivity and structural information. There are several COSY variants, each with its unique strengths and experimental parameters.
COSY90 is the standard two-dimensional (2D) COSY experiment that...

You might also read

Related Articles

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

Sort by
Same author

Some observations on pending medical legislation and medical trends.

Virginia medical monthly·2010
Same author

CFOs see management issues shifting in health care.

Healthcare financial management : journal of the Healthcare Financial Management Association·1986
Same author

Analytical tools for nonlinear image restoration.

Applied optics·1983
Same author

Compatibility of azathioprine sodium with intravenous fluids.

American journal of hospital pharmacy·1981
Same author

A conceptual framework for health system planning in developing nations.

World hospitals·1979
Same author

Some system considerations of neuron pools with feedback.

Biological cybernetics·1976

Related Experiment Video

Updated: May 29, 2026

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging
10:44

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

One-dimensional scan selection for two-dimensional signal restoration.

J L Aravena1, W A Porter

  • 1Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA 70803.

IEEE Transactions on Pattern Analysis and Machine Intelligence
|August 27, 2011
PubMed
Summary
This summary is machine-generated.

Sequential scanning in multi-dimensional (m-D) filtering is complex. The optimal causal filter and performance depend significantly on the chosen scan, necessitating careful scan selection techniques.

More Related Videos

2D and 3D Echocardiography in the Axolotl (Ambystoma Mexicanum)
09:53

2D and 3D Echocardiography in the Axolotl (Ambystoma Mexicanum)

Published on: November 29, 2018

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

Related Experiment Videos

Last Updated: May 29, 2026

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging
10:44

Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging

Published on: June 21, 2024

2D and 3D Echocardiography in the Axolotl (Ambystoma Mexicanum)
09:53

2D and 3D Echocardiography in the Axolotl (Ambystoma Mexicanum)

Published on: November 29, 2018

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

Area of Science:

  • Signal Processing
  • Data Analysis
  • Multidimensional Systems

Background:

  • Sequential scanning is a method for processing multidimensional data.
  • The choice of scanning order can impact filtering results.
  • Understanding this impact is crucial for accurate data analysis.

Purpose of the Study:

  • To investigate the influence of scan selection on m-D filtering.
  • To analyze the dependency of optimal causal filters on the scan.
  • To evaluate techniques for selecting appropriate scans.

Main Methods:

  • Consideration of m-D filtering using sequential scanning.
  • Analysis of the dependency of the optimal causal filter and performance measure on the scan.
  • Illustrative examples to demonstrate the effect of scan selection.

Main Results:

  • The optimal causal filter is dependent on the selected scan.
  • The performance measure is also significantly affected by the scan choice.
  • The impact of scan selection can be substantial in m-D filtering.

Conclusions:

  • Scan selection is a critical factor in m-D filtering.
  • The choice of scan directly influences filter design and performance.
  • Further analysis of scan selection techniques is warranted for optimal results.