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中文摘要：
为了提高图像可视分存共享的安全性,提出了一种基于改进Arnold变换和布尔运算的图像信息安全保护算法。该方法利用改进的非拟仿射Arnold变换对像素位置置乱,并利用该变换将其分解为两幅图像,将分解所得图像分别采用基于布尔运算的r轮（2,n）秘密共享方案实现可视分存。最后,对可视分存图像进行重构,并采用逆非拟仿射Arnold变换实现图像合成和置乱反变换恢复原图像,对其存在随机噪声采用改进中值滤波去噪。理论分析和实验结果均表明,所建议的组合式图像信息安全保护方法是有效的。
英文摘要：
To improve the security of sharing visual image,this paper proposed a sharing encryption method by combination the scrambling and decomposing in image information protection. This method firstly scrambled the image pixel position and divided it into two sub-images by using the non-affine Arnold transformation. Secondly,it deposited each sub-image into multiple images by means of the r wheel（ 2,n） Boolean operations secret sharing scheme. In the end,it restored the sharing visual image from the composited image by the same anti-Arnold transform with non-affine properties. It used the median filtering method to denoise random impulse noise of the restored raw image in order to improve the visual quality of the protected image.Some experimental results show that this proposed method is effective to protect image information security.
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