picture
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上传日期：-07-18 09:50:48
上 传 者：至尊宝物语
说明：Matlab简单操作实现图像的隐藏加密 ，将一个图像隐藏至另一个图像中的功能。
首先，讲一些基础的部分，计算机中存储图像时会把图像分割成一个个像素然后存储像素的颜色、灰度值的道理相信很多人都明白，对于一张灰度图而言，每一个像素有256个灰度(0-255)，所以一个像素占8位，比如10000011，对于图片而言，能准确反映明暗的位数只有前四位，因此后四位即使去掉也对图片影响不大，具体图片后面会有举例。如果将1000 0011的后四位去掉，就空出了四位，这样就可以为所欲为了，比如我就把另一张图片的前四位存到了这四位里，成功将它隐藏了起来。
(Matlab simple operation to achieve image hiding and encryption, hiding an image into another image.
First, some basic parts, when the image is stored in a computer, the image is divided into pixels and the color and gray value of the pixels are stored. It is believed that many people understand that for a grayscale graph, each pixel has 256 gray levels (0-255), so one pixel accounts for 8 bits, such as 10000011, for a pixel. In terms of pictures, only the first four bits can accurately reflect the number of bright and dark, so even the latter four will have little effect on the pictures. If the first four of 10000011 are removed, the four place is empty, so that I can do whatever you like, for example, I put the top four of the other picture in the four, and successfully hide it.)
文件列表：[举报垃圾]
浣熊.jpg, 10112 , -07-18
test1.m, 266 , -07-18
公鸡.jpg, 5239 , -07-18
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