A multi-scale triangular mapping and its applications in variation scale scrambling. (19th July 2010)

• Record Type: Journal Article
• Authors: Li-Ping, Shao; Zheng, Qin; Hong-Jiang, Gao; Bo, Liu; Huan, Li
• Is Part Of: International journal of computer applications technology. Volume 38:Number 1-3(2010)
• Page Start: 74
• Page End: 85
• Publication Date: 2010-07-19
• Subjects: triangular mapping -- multi-scale -- variation scale -- image scrambling -- image security -- rectangle images -- inverse mapping -- image protection -- digital images -- image recovery; Technology -- Data processing -- Periodicals; 620.00285
• Languages: English
• ISSNs: 0952-8091

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.