Supercharge Your Innovation With Domain-Expert AI Agents!

A Method of Image Encryption by Combining Fourier Transform and Differential Transform

A Fourier Transform, Differentiation Technique

Active Publication Date: 2022-02-15
NAVAL AVIATION UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for image encryption using Fourier transform and differential transform, and then to a certain extent overcome the problems of traditional image encryption and decryption algorithm complexity and low security

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Method of Image Encryption by Combining Fourier Transform and Differential Transform
  • A Method of Image Encryption by Combining Fourier Transform and Differential Transform
  • A Method of Image Encryption by Combining Fourier Transform and Differential Transform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solutions have not been shown or descr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for encrypting images by combining Fourier transform and differential transform, which is suitable for encrypted transmission of important picture information. This method is mainly to normalize the image data after reading and then perform two-dimensional fast Fourier transform to obtain two array matrices of real part and imaginary part respectively, and then perform proportional differential transformation on the real part or imaginary part array matrix , and then perform fast normalization, and the obtained two normalized arrays of real part and imaginary part are stored as encrypted image data, and the fast normalization information factor is used as one of the decryption keys, and sent to the remote receiving end, and then The fast normalized inverse transform and the proportional differential inverse transform of the data are decrypted, the real part and the imaginary part are compounded, and then the two-dimensional fast Fourier inverse transform is performed and normalized to obtain the decrypted and restored image data. The method has the advantages of good encryption security and high difficulty in decryption and recovery.

Description

technical field [0001] The invention relates to the field of image encryption and restoration, in particular, to a method for image encryption by combining Fourier transform and differential transform, which can be applied to the fields of secure communication, encrypted image processing, and the like. Background technique [0002] With the increasing importance of information security, image encryption technology has been paid more and more attention by more and more countries. Traditional image encryption uses flipping and transformation of pixel data to disturb the spatial position of pixels, but the above encryption method often exposes some clues of the original image due to the continuity of the image. There is also a random sequence generated by a chaotic system to cover up, but the above method has nothing to do with the information of the image itself, and it is difficult to resist plaintext attacks. [0003] The Fourier transform is a transformation from the time ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F17/14G06F17/16
CPCG06F21/602G06F17/142G06F17/16
Inventor 雷军委王瑞奇李恒李静晋玉强陈育良
Owner NAVAL AVIATION UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com