A multi-scale triangular mapping and its applications in variation scale scrambling
Shao Li Ping, Zheng Qin, Gao Hong Jiang, Bo Liu, Huan Li · International Journal of Computer Applications in Technology · 2010
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.