Method of Digital Image Scrambling Based on Extended Zig-zag Transformation
Gen Liu · Xinxi wangluo anquan · 2011
As the traditional digital image scrambling methods are too complicated,a new method using extended Zig-zag scanning for digital image scrambling is proposed.In order to avoid the problem that single direction of the Zig-zag transform may cause positions of some points keep constant unchang,the solution which conducts Zig-zag iteration scrambling repeatedly from four directions is put forward,and the iteration times with four directions will be as the key to recover the scrambled image.The experiment results show that the algorithm has a good image scrambling effect,high safety,and the algorithm is simple and easy to realize.