(k,n) threshold based user-friendly visual secret sharing method
一种秘密共享、门限的技术,应用在信息安全领域,能够解决安全性低、不方便管理、破坏图像完整性等问题,达到提高对比度、提高可视效果、提高图像应用范围的效果
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[0036] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.
[0037] refer to figure 1 , the implementation steps of the present invention are as follows:
[0038] Step 1, input a secret image S and n cover images C to be protected.
[0039] The secret image S is an image that needs to be protected, and the cover image C is used to hide the secret image S. The size of the cover image and the secret graphic must be equal, here it is set to r×c, r represents the height of the secret image and the cover image, and c represents the secret image and The width of the cover image.
[0040] Step 2, use the traditional random grid-based method to generate a shared image, the secret image S uses a binary image, for the traditional random grid-based visual secret sharing method, firstly, the pixel S of the secret image S i,j For coding, the following first introduces the traditional random grid.
[0041] 2a) Generate...
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