北京科技大学学报2012，Vol.34Issue(12)：1478-1482,5.
基于三维仿射变换的数字图像置乱算法
Image scrambling algorithm based on three-dimensional affine transformations
摘要
Abstract
According to the features of digital images, a kind of three-dimensional scrambling and encryption algorithm was proposed based on two-dimensional scrambling transformations in a finite integer domain, affine transformations, and integer lifting transformations. This algorithm applies to images with any length and width or at any length-to-width ratio. The feasibility that some parameters of the transformation matrix are negative integers or decimals is taken into account, and the method of parameter setting is explicitly shown. Real number is used in the algorithm, which expands the space of parameters, scrambles the pixel positions and changes their values, makes the scrambling result better, increases the periodicity of scrambling, and improves the security of digital image transformations.关键词
密码术/算法/图像处理/三维/仿射变换Key words
cryptography/algorithms/image processing/three-dimensional/affine transformations分类
信息技术与安全科学引用本文复制引用
文昌辞,王沁,丁华,苗晓宁,陶春生..基于三维仿射变换的数字图像置乱算法[J].北京科技大学学报,2012,34(12):1478-1482,5.基金项目
装备预研重点基金资助项目 （）
