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

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...
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...
Sampling Continuous Time Signal01:11

Sampling Continuous Time Signal

In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
In the...
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...
Properties of Fourier series II01:21

Properties of Fourier series II

Time scaling of signals is a crucial concept in signal processing that affects the Fourier series representation without altering its coefficients. The process modifies the fundamental frequency, thereby changing how the series represents the signal over time. This principle is essential in various applications, including audio and image processing, where signal manipulation is frequent. Understanding function symmetries is fundamental to simplifying the Fourier series.
A function f(t) is...
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...

You might also read

Related Articles

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

Sort by
Same author

A stratified treatment algorithm in psychiatry: a program on stratified pharmacogenomics in severe mental illness (Psych-STRATA): concept, objectives and methodologies of a multidisciplinary project funded by Horizon Europe.

European archives of psychiatry and clinical neuroscience·2024
Same author

Pharmacodynamic activity of BMS-986156, a glucocorticoid-induced TNF receptor-related protein agonist, alone or in combination with nivolumab in patients with advanced solid tumors.

ESMO open·2023
Same author

T cell receptor sequencing reveals reduced clonal breadth of T-cell responses against SARS-CoV-2 after natural infection and vaccination in allogeneic hematopoietic stem cell transplant recipients.

Annals of oncology : official journal of the European Society for Medical Oncology·2022
Same author

[35/m-Unprotected sexual contact : Preparation for the medical specialist examination: part 136].

Der Internist·2021
Same author

[HIV infection in the intensive care unit].

Medizinische Klinik, Intensivmedizin und Notfallmedizin·2020
Same author

Antiretroviral treatment outcomes among late HIV presenters initiating treatment with integrase inhibitors or protease inhibitors.

HIV medicine·2020
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

Related Experiment Video

Updated: Jun 15, 2026

Troubleshooting and Quality Assurance in Hyperpolarized Xenon Magnetic Resonance Imaging: Tools for High-Quality Image Acquisition
09:55

Troubleshooting and Quality Assurance in Hyperpolarized Xenon Magnetic Resonance Imaging: Tools for High-Quality Image Acquisition

Published on: January 5, 2024

Characterizing halftone noise: a technique.

F R Ruckdeschel, A M Walsh, O G Hauser

    Applied Optics
    |March 9, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new scanning microdensitometer technique characterizes halftone pattern regularity. This method quantifies noise in reproduction processes like xerography and Cromalin proofing.

    More Related Videos

    A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
    06:41

    A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis

    Published on: March 9, 2015

    Related Experiment Videos

    Last Updated: Jun 15, 2026

    Troubleshooting and Quality Assurance in Hyperpolarized Xenon Magnetic Resonance Imaging: Tools for High-Quality Image Acquisition
    09:55

    Troubleshooting and Quality Assurance in Hyperpolarized Xenon Magnetic Resonance Imaging: Tools for High-Quality Image Acquisition

    Published on: January 5, 2024

    A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
    06:41

    A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis

    Published on: March 9, 2015

    Area of Science:

    • Image processing and reproduction technologies.

    Background:

    • Halftone patterns are crucial in image reproduction.
    • Assessing the regularity and noise of these patterns is essential for quality control.

    Purpose of the Study:

    • To present a novel measurement technique for characterizing the regularity of low-coverage halftone patterns.
    • To compare the halftone quality of different reproduction processes.

    Main Methods:

    • Utilizing a scanning microdensitometer to examine individual halftone cells.
    • Comparing adjacent halftone cells to derive a regularity descriptor.
    • Measuring copy quality from various processes, including xerography and Cromalin proofing.

    Main Results:

    • A quantitative descriptor for halftone regularity was obtained.
    • The Cromalin proofing process demonstrated superior structural quality halftones.
    • Xerography, under specific conditions, achieved noise levels comparable to moderate quality lithography.

    Conclusions:

    • The developed technique enables objective characterization of halftone pattern regularity.
    • The study provides comparative data on halftone quality across different printing technologies.
    • Findings highlight the potential for high-quality halftones in digital and conventional reproduction methods.