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lvboqqqqqqq
- 于傅里叶变换的图像加密技术研究 具体是将一幅图像用 fft 变换到频域 在频域中进行加密 我考虑的是通过随机相位来加密的方法,请问用matlab怎样实现 加密后在通过 ifft 得到加密后的图象 -Fourier transform in the image encryption technology to study the details of an image is to use fft transformed to the frequency doma
fft_protect
- 傅立叶相位加密,用于图像加密,效果好,需要密钥图像,也在压缩包里。适用于灰度图象。-Fourier phase encryption for image encryption, which is good, need to key images, but also compressed bundle. Apply to the gray-scale image.
ImgCrypt_src
- 一种Bitmap图片加密方法,通过设定加密和解密的参数来达到加密的效果,收到文件后使用相同的参数即可还原出原始图像-a Bitmap Images encryption methods, by setting the encryption and decryption parameters to achieve the effect of encryption, After receipt of the document using the same parameters can be redu
BwAdd_Y_ColorImage
- matlab程序添加水印的DCT算法,先将水印加密,然后嵌入图像中-matlab program to add a watermark in the DCT algorithm, first the watermark encryption, and embedded images
Disfrst
- this Fractional Fourier transform code. it can be used in many appllications such as: encryption, watermarking, and signal analysis.you can use this code to transmit images in fractional domain to increase security and imageproperities-this is Fracti
Logistic
- 对256*256的图片进行加密解密,用MATLAB实现代码,算法使用混沌算法-256* 256 images, encryption and decryption, using MATLAB code algorithm using chaotic algorithm. . .
Chaos_encrypt
- 基于混沌序列的空域置换图像加密程序,对于JPG格式的真彩图像在处理时会出现色彩失真。-A image encryption process based on the replacement of airspace with chaotic sequence, when handling true color images in JPG format there will be a color distortion.
arlond
- 主要思想是从两幅图像中选取信息,然后置乱成一幅图像。 这样可以从要加密的多幅(2*n幅)图像中,按照上述思想,得到一半数目(n幅)的图像。 对得到的图像进行自适应算法的隐藏,又可以得到(n-1)幅的图像。 对(n-1)幅的图像进行Arnold变换,得到(n-1)幅的图像作为密钥,此外,密钥还有迭代次数,置乱规则,Arnold加密规则 主要缺点是Arnold的周期较大,程序的运行的时间长些,我的电脑需要8分钟,另外,Arnold只能处理方阵 图像的置乱加密算法很多,
Fresnel-hologram
- 目前生成全息图主要有傅里叶和菲涅尔变换,此代码为利用菲涅尔变换将二维图片生成菲涅尔全息图,以达到图像加密的功能。-The current generated hologram mainly Fu Liye and Finel transform, the code for the use of Finel transform two-dimensional images generated Finel hologram, in order to achieve the function of i
chaos_scrambling_gui
- 本代码实现了对高光谱遥感图像进行混沌序列置乱加密,其中包括读取三维立体遥感图像、混沌加密以及灰度直方图绘制-This code implements the hyperspectral remote sensing images chaotic sequence of scrambling encryption, including reading the three-dimensional sensing image, and histogram drawing Chaotic Encrypt