【摘要】 针对图像小波编码混沌加密技术中出现的边界效应问题,提出了基于区间小波编码的混沌加密新技术。相对于传统的图像延拓方法,该方法在小波变换前后,不需要对图像进行特殊的延拓处理,在对图像加密的同时,压缩了图像文件规模,有效地消除了边界效应。此外,调整参数L的大小,可满足对图像恢复精度的不同要求。实验结果表明,在参数L=1时,信号恢复精度已满足要求。更多还原

【Abstract】 For eliminating boundary effection in image chaos encryption based on wavelet coding,a new image chaos encryption technology is proposed based on interval wavelet coding.Comparing with the traditional image extent method,the special extent processes is not needed in this method before the wavelet transform(WT) to image and after the inverse wavelet transform(IWT) to chaos encryption serials.The test results show that this method not only eliminates the boundary effect,but also compresses the image file.Otherwise,the value of parameter L can be changed to satisfy different precision request to the reconstruction of image.更多还原