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

Masking and Demasking Agents01:19

Masking and Demasking Agents

2.7K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
2.7K
Convolution: Math, Graphics, and Discrete Signals01:24

Convolution: Math, Graphics, and Discrete Signals

459
In any LTI (Linear Time-Invariant) system, the convolution of two signals is denoted using a convolution operator, assuming all initial conditions are zero. The convolution integral can be divided into two parts: the zero-input or natural response and the zero-state or forced response, with t0 indicating the initial time.
To simplify the convolution integral, it is assumed that both the input signal and impulse response are zero for negative time values. The graphical convolution process...
459
Convolution Properties II01:17

Convolution Properties II

297
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...
297
Convolution Properties I01:20

Convolution Properties I

253
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:
253
Upsampling01:22

Upsampling

337
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...
337
Aliasing01:18

Aliasing

263
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...
263

You might also read

Related Articles

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

Sort by
Same author

Lamellar-Paracrystallinity-Controlled Thermal Transport in Polymer Semiconductors.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

ARID1A loss drives gastric signet ring cell carcinoma by regulating mucin production and secretion.

Nature communications·2026
Same author

Identification and Optimization of Pyridone Derivatives as Pan-MEK/RAF Nondegrading Molecular Glues for the Treatment of RAS-Driven Cancers.

Journal of medicinal chemistry·2026
Same author

Effects of HO-1 on the Integrity of Retinal Pigment Epithelial Cells in Regulating Axial Elongation in Experimental Myopia.

Investigative ophthalmology & visual science·2026
Same author

Multi-Omics and Phenotypic Analysis Reveal <i>Paenibacillus polymyxa</i> JX-1 as a Broad-Spectrum Biocontrol Agent Against Clubroot Disease.

Microorganisms·2026
Same author

Long-term survival outcomes of laparoscopic total gastrectomy vs open total gastrectomy in patients with clinical stage I gastric cancer the CLASS02 randomized clinical trial.

International journal of surgery (London, England)·2026

Related Experiment Video

Updated: Sep 27, 2025

Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
10:16

Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

Published on: February 8, 2014

12.4K

Lossless Data Hiding in Encrypted Images Compatible With Homomorphic Processing.

Hao-Tian Wu, Yiu-Ming Cheung, Zhenwei Zhuang

    IEEE Transactions on Cybernetics
    |April 15, 2022
    PubMed
    Summary
    This summary is machine-generated.

    A new lossless data hiding method, random element substitution (RES), enables data recovery from encrypted images even after homomorphic processing. This technique protects privacy and allows data extraction before or after decryption.

    More Related Videos

    Characterization of Anisotropic Leaky Mode Modulators for Holovideo
    09:36

    Characterization of Anisotropic Leaky Mode Modulators for Holovideo

    Published on: March 19, 2016

    8.0K
    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    5.8K

    Related Experiment Videos

    Last Updated: Sep 27, 2025

    Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects
    10:16

    Digital Inline Holographic Microscopy DIHM of Weakly-scattering Subjects

    Published on: February 8, 2014

    12.4K
    Characterization of Anisotropic Leaky Mode Modulators for Holovideo
    09:36

    Characterization of Anisotropic Leaky Mode Modulators for Holovideo

    Published on: March 19, 2016

    8.0K
    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
    08:48

    Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

    Published on: September 25, 2020

    5.8K

    Area of Science:

    • Cryptography
    • Information Security
    • Digital Image Processing

    Background:

    • Reversible data hiding in ciphertext is crucial for cloud privacy and data transmission.
    • Homomorphic processing of encrypted images with hidden data is challenging due to data alteration.
    • Existing methods often destroy hidden data during outer processing of encrypted images.

    Purpose of the Study:

    • To propose a novel lossless data hiding method for encrypted images.
    • To enable homomorphic processing on encrypted images with hidden data without data loss.
    • To ensure data extractability even after decryption and subsequent processing.

    Main Methods:

    • Introduced a lossless data hiding method called random element substitution (RES) for the Paillier cryptosystem.
    • Substituted to-be-hidden bits with random elements of cipher values.
    • Combined RES with a preprocessing-free algorithm to create two schemes for encrypted images.

    Main Results:

    • Achieved lossless data hiding in encrypted images using the RES method.
    • Enabled homomorphic processing on encrypted images, yielding a processed image.
    • Demonstrated partial data retrieval without decryption and full data extraction post-decryption, even after processing.

    Conclusions:

    • The proposed RES method and combined schemes offer effective lossless data hiding in encrypted images.
    • The technique preserves hidden data integrity during homomorphic processing.
    • Experimental results validate the efficacy and superior performance of the developed schemes.