摘要
Arnold变换由于其周期性,广泛应用于图像置乱。但Arnold反变换,需要计算其周期,对于阶数较大的图像,非常耗时。因此本文采用一种改进的Arnold反变换算法。通过计算Arnold变换矩阵的逆矩阵求解Arnold反变换,不需要计算周期,节省了开销。
Arnold transformation is applied widely in digital image scramble because of its periodicity.But we will waste lots of time when we used its periodicity to get the anti-Arnold transformation algorithm,especially when it used in the picture with big degree.So,in this paper,we use a new anti-Arnold transformation algorithm which got by solving equation groups.By this way,we needn ＇t to figure out the degree,which will save lots of time.
出处
《微计算机信息》
2010年第14期206-208,共3页
Control & Automation
