Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...

Deconvolution

Deconvolution

Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...

Convolution Properties II

Convolution Properties II

The important convolution properties include width, area, differentiation, and integration properties.
The width property indicates that if the durations of input signals are T1 and T2, then the width of the output response equals the sum of both durations, irrespective of the shapes of the two functions. For instance, convolving two rectangular pulses with durations of 2 seconds and 1 second results in a function with a width of 3 seconds.
The area property asserts that the area under the...

Effects of EDTA on End-Point Detection Methods

Effects of EDTA on End-Point Detection Methods

Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...

Reconstruction of Signal using Interpolation

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...

Convolution Properties I

Convolution Properties I

Convolution computations can be simplified by utilizing their inherent properties.
The commutative property reveals that the input and the impulse response of an LTI (Linear Time-Invariant) system can be interchanged without affecting the output:

You might also read

Related Articles

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

Sort by

Same author

Alignment in yrast structure and negative-parity sideband in the proton-rich nucleus [Formula: see text]Sm.

Scientific reports·2026

Same author

Skin barrier-related genes in childhood atopic dermatitis, asthma, and allergy: A systematic review and meta-analysis.

Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology·2026

Same author

ADRB2 genotype-guided treatment for childhood asthma: Cost analysis of the PUFFIN and PACT trials.

Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology·2025

Same author

Ameloblastic fibroma and BRAF V600E immunohistochemistry staining pattern: case report and review of a rare entity.

International journal of oral and maxillofacial surgery·2025

Same author

Wavelet transform of autoradiographs: Analysis of MOX fuel heterogeneity.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2024

Same author

Measurement of energy and directional distribution of neutron ambient dose equivalent for the <sup>7</sup>Li(p,n)<sup>7</sup>Be reaction.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2023

Search research articles

Related Experiment Videos

Image edge detection and enhancement by an inversion operation.

D Nath Das, S Mukhopadhyay

|February 28, 2008

Summary

This study introduces a novel optical method for edge extraction in digital images. By utilizing an inverted image with a lens-based setup, enhanced edge detection is achieved.

Area of Science:

Optics
Image Processing
Computer Vision

Background:

Edge extraction is a fundamental step in digital image processing.
Various optical and digital techniques exist for edge detection.
Enhancing edge detection accuracy and efficiency remains an active research area.

Purpose of the Study:

To propose a novel lens-based optical method for image edge extraction and enhancement.
To leverage the properties of inverted and non-inverted images for improved edge detection.
To provide an alternative optical approach to traditional digital edge extraction algorithms.

Main Methods:

A lens-based optical setup was employed for image acquisition.
The original image and its inverted form were simultaneously utilized.

Related Experiment Videos

Image processing techniques were applied to the combined optical data to extract edges.

Main Results:

The proposed method successfully extracts edges from digital images.
The use of inverted and non-inverted images enhances the precision of edge detection.
The optical approach offers a potentially efficient alternative for edge extraction.

Conclusions:

The developed lens-based optical method provides an effective means for image edge extraction and enhancement.
This technique demonstrates the utility of combining direct and inverted optical information for improved image analysis.
Further research can explore the scalability and application of this method in diverse imaging scenarios.