Three-dimensional Arnold mapping-based image grouping encryption method
A block encryption and image technology, applied in image coding, image data processing, instruments, etc., can solve problems such as inability to resist exhaustive attacks, inability to guarantee security, inability to resist known plaintext attacks, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0042] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0043] Digital image Input_Picture, with M W×H Indicates that w is the width of the image, in pixels, the image is divided into 8*8 pixel blocks, block_size is the size of the encryption block, n=w / block_size, the first pixel point P in each encryption block 0 ={r,g,b} T '. All the double-precision values key0~key3 and int type times in the following are provided by the user, take u0=1.9999.
[0044] The specific encryption process is as follows (see attached figure 1 ):
[0045] 1. Use formulas separately
[0046] x01=(key0+key1) / (0xffffffff*2) and x02=(key2+key3) / (0xffffffff*2), the obtained x01 and x02 are used as logistic parameters, and x21 and x22 are obtained after 100 iterations.
[0047] 2. Use x2 obtained by x2=(x21+x22) / 2 as the parameter of chebyshev, and then every 100 iterations, take the chaotic sequence value to generate an array element v...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com