Related Experiment Video
Updated: Nov 1, 2025

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
Published on: August 30, 2013
Geometric resistant polar quaternion discrete Fourier transform and its application in color image zero-hiding
Chunpeng Wang1, Bin Ma1, Zhiqiu Xia2
1School of Cyber Security, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
Abstract:
As a typical frequency-domain analysis method, quaternion discrete Fourier transform (QDFT) has been widely used in information hiding in color images. However, due to the sensitivity of QDFT to geometric attacks, existing QDFT-based information hiding schemes have limited ability in resisting geometric attacks. In this study, a kind of novel geometrically resilient polar QDFT (PQDFT) is constructed and the properties of the proposed PQDFT are analyzed. Subsequently, a PQDFT-based color image zero-hiding scheme robust to geometric attacks is proposed for lossless copyright protection of color images, which experimentally shows reasonable resistance against geometric and common attacks, indicating better robustness compared with the existing QDFT-based information hiding schemes and other leading-edge zero-hiding schemes.
Related Concept Videos
Curvilinear Motion: Polar Coordinates
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
Polar and Cylindrical Coordinates
Vector Representation of Complex Numbers
Consider a function defined as the product of the complex factors in the numerator divided by the product of the complex factors in the...
Polar Coordinates
Reconstruction of Signal using Interpolation
Discrete Fourier Transform

