Title: A multi-scale triangular mapping and its applications in variation scale scrambling

Authors: Shao Li-Ping, Qin Zheng, Gao Hong-Jiang, Liu Bo, Li Huan

Addresses: Department of Computer Science and Technology, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China. ' Key Lab for ISS of MOE, Tsinghua University, Beijing 100084, China. ' Department of Computer Science and Technology, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China. ' Department of Computer Science and Technology, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China. ' Department of Computer Science and Technology, School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China

Abstract: A multi-scale triangular mapping and its inverse mapping are presented. Combined with an mton mapping, scrambling method based on triangular mapping has a flexible variation scale scrambling ability. It can scramble any image with numerous different scales in position space to change the position relevance or in colour space to change the grey-value relevance or in both position and colour space to change both the position and grey-value relevance. The experiments show triangular mapping based scrambling method flexible ability in scrambling image, low cost in scrambling and recovering image, wonderful scrambling performances by comparing with conventional scrambling methods.

Keywords: triangular mapping; multi-scale; variation scale; image scrambling; image security; rectangle images; inverse mapping; image protection; digital images; image recovery.

DOI: 10.1504/IJCAT.2010.034141

International Journal of Computer Applications in Technology, 2010 Vol.38 No.1/2/3, pp.74 - 85

Available online: 16 Jul 2010 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article