psnr

基于SVD和混沌加密的DWT。程序里包含了直方图攻击，锐化，剪切，高斯噪声等攻击。(Based the SVD and chaotic encryption DWT. The program contains a histogram attack, sharpening, shear, Gaussian noise attack.)

采用8个阵元，利用CAPON算法，进行DOA，画出波达方向估计误差随着信噪比变化的曲线图(Eight elements, the use of the CAPON algorithm of DOA draw the DOA estimation error changes with the SNR curve)

实现图像的几何变换，包括图像的平移、镜像变换、缩放、转置以及旋转。(Achieve geometric transformation of image, including the image translation, image transformation, scaling, transpose and rotation.)

基于分片重排列技术的维数约简方法，用于特征提取。(Patch Alignment for Dimensionality Reduction，IEEETrans.，2009.)

利用相位相关法实现了图像的匹配，这种方法的优点是提取速度快，方法简单，运算量少。(Using the phase correlation method to realize the image matching, the advantage of this method is the extraction method is simple, fast, less computation.)

小波融合的加权平均算法，适用于初学者，很好的引入(Weighted average algorithm for wavelet fusion)

说明：  使用matlab做分水岭算法，分水岭算法是图像分割中常用的算法，算法的理论依据待考究，适用场景可供分析讨论。(watershed algorithm using matlab)

本程序用于数字水印，可以输入一副图像，嵌入水印信息，然后防止各种各样的攻击，最后可以提取水印信息，恢复原图像(This procedure for digital watermarks, can enter a pair of images, embedded watermark information, and then to prevent the various attacks, the watermark information can be extracted Finally, restore the original image)

采用平均图像融合算法，设计并实现基于小波变换的图像融合算法（选择同一场景的三对可见图像、红外图像或SAR图像进行试验）(Average image fusion algorithm is adopted to design and implement image fusion algorithm based on wavelet transform (three pairs of visible images, infrared images or SAR images of the same scene are selected for testing))

差影法去背景---部分测试，感觉还行，与大家分享，呵呵差影法去背景(Poor background--- Shadow law to some of the test, I feel also visit to share with you, huh, huh difference method to the background shadow)