基于数字水印的图像加密技术

Image Encryption Based on Digital Watermarking Technology

根据LSB算法简单易实现的特点,结合在图像置乱技术中很好特性的Arnold变换。利用变化产生影子图像。通过LSB算法将影子图像嵌入到掩饰图像中,再利用LSB算法将图像的影子图像提取出来。将提取出来的影子图像经过文中设计的Arnold反变换恢复出原始。该方法不但有效地无损伤隐藏了图像,同样还保证了隐藏图像的安全性,无损伤性。

According to the LSB algorithm is simple to achieve the characteristics of image scrambling technology combines good features in Arnold. The change is used for the shadow image. LSB algorithm by the shadow image is embedded into the cover image,then LSB algorithm uses images extracted from the image's shadow. The extracted text in the shadow image is designed to re. cover the original Arnold inverse transform. This method not only effectively hide the image without damage,as also to ensure the se. curity of the hidden images,without injury.