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

Transformations of Functions III

Transformations of Functions III

Transformations modify the graphical representation of a function without changing its fundamental form. One common transformation is reflection, which flips the graph across a designated axis. When the vertical coordinates of all points are multiplied by the negative one, the entire graph is mirrored over the horizontal axis. This transformation reverses the vertical orientation of peaks and troughs, akin to signal inversion in electrical systems, where a waveform is flipped, but the timing of...

Interference and Superposition of Waves

Interference and Superposition of Waves

When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...

Partial Differential Equations

Partial Differential Equations

A stone dropped into a still pond generates waves that propagate outward in circular patterns, creating a dynamic surface whose elevation depends on both position and time. At any given location, the water level oscillates as the wave passes, while at any fixed moment, the surface exhibits smooth, curved structures extending across space. This dual dependence requires a mathematical description that accounts for variation in multiple variables simultaneously.At a fixed point on the water...

Properties of DTFT I

Properties of DTFT I

In signal processing, Discrete-Time Fourier Transforms (DTFTs) play a critical role in analyzing discrete-time signals in the frequency domain. Various properties of the DTFTs such as linearity, time-shifting, frequency-shifting, time reversal, conjugation, and time scaling help understand and manipulate these signals for different applications.
The linearity property of DTFTs is fundamental. If two discrete-time signals are multiplied by constants a and b respectively, and then combined to...

Geometric Sequences

Geometric Sequences

In systems where values diminish by a constant proportion at each stage, the resulting sequence follows a geometric structure. Each new value in the sequence is obtained by applying a fixed multiplier to the preceding term. This regular, proportional decline type is often used to represent processes involving gradual loss, such as energy dissipation or reduction in amplitude over time.When analyzing the total effect of such a process across unlimited iterations, the series of values is referred...

Effective Value of a Periodic Waveform

Effective Value of a Periodic Waveform

The concept of effective value, the root mean square (RMS) value, is crucial in understanding electrical circuits and power delivery. This idea emerges from the necessity to measure the effectiveness of a voltage or current source in supplying power to a resistive load.
The effective value of a periodic current represents the direct current (DC) that conveys the same average power to a resistor as the periodic current itself. This concept is crucial when assessing AC circuits. To determine the...

You might also read

Related Articles

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

Sort by

Same author

Frame-rate up-conversion detection based on convolutional neural network for learning spatiotemporal features.

Forensic science international·2022

Same author

Discipline vs guidance: comparison of visual engagement approaches in immersive virtual environments.

Multimedia tools and applications·2021

Same author

Detection of upscale-crop and partial manipulation in surveillance video based on sensor pattern noise.

Sensors (Basel, Switzerland)·2013

Same author

Estimation of color modification in digital images by CFA pattern change.

Forensic science international·2013

Same author

Qualitative and quantitative differences in the intensity of Fas-mediated intracellular signals determine life and death in T cells.

International journal of hematology·2010

Same author

Color extended visual cryptography using error diffusion.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2010

Search research articles

Related Experiment Video

Updated: Jun 22, 2026

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

Geometric attack resistant watermarking in wavelet transform domain.

Choong-Hoon Lee, Heung-Kyu Lee

|June 5, 2009

Summary

This summary is machine-generated.

This study introduces a novel autocorrelation function (ACF) based digital watermarking scheme in the discrete wavelet transform (DWT) domain. The proposed DWT-domain method enhances watermark robustness against geometric attacks compared to traditional spatial domain approaches.

Related Experiment Videos

Last Updated: Jun 22, 2026

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

Area of Science:

Digital image processing
Information security
Signal processing

Background:

Traditional autocorrelation function (ACF) based watermarking is typically performed in the spatial domain.
ACF-based methods rely on autocorrelation (AC) peaks for detecting geometric attacks.
Spatial domain embedding can limit the robustness and efficiency of ACF-based watermarking.

Purpose of the Study:

To propose a novel ACF-based digital watermarking scheme in the discrete wavelet transform (DWT) domain.
To demonstrate that autocorrelation peaks, crucial for geometric attack detection, can be effectively extracted in the DWT domain.
To enhance the robustness of ACF-based watermarking against geometric distortions and removal attacks.

Main Methods:

Embedding a periodic watermark in the DWT domain, considering autocorrelation peak strength and noise visibility.
Utilizing the undecimated DWT to address image shift issues during watermark detection.
Comparing the proposed DWT-domain scheme with conventional spatial domain ACF-based watermarking.

Main Results:

The proposed DWT-domain watermarking scheme generates stronger autocorrelation peaks compared to spatial domain methods.
The scheme exhibits improved robustness against combined geometric attacks and removal attempts.
Effective handling of image shifts during watermark detection using the undecimated DWT.

Conclusions:

Embedding watermarks in the DWT domain using ACF offers superior robustness compared to spatial domain methods.
The proposed scheme provides a more effective approach for detecting geometric attacks through enhanced AC peak strength.
The integration of undecimated DWT ensures reliable watermark detection even with image shifts.