数字水印提取DCT&DWT;的代码加运行文档

数字水印提取基于DCT&DWT;的代码加运行文档。 压缩文件内包含代码和文档，亲测可用

function M1=attack（dphoto） 
a1=photo;
figure（1）;
            switch d                     
                case 1
             WImage1=a1;
             noise0=20*randn（size（WImage1））;
             WImage1=WImage1+noise0;
             subplot（234）;
             imshow（WImage1[]）;
             title（‘加入白噪声后图像‘）;
             M1=WImage1;
             M_1=uint8（M1）;
                
                case 2
             WImage2=a1;
             H=fspecial（‘gaussian‘[44]0.2）;
             WImage2=imfilter（WImage2H）;
             subplot（234）;
             imshow（WImage2[]）;
             title（‘高斯低通滤波后图像‘）;
             M1=WImage2;
             M_1=uint8（M1）;
             
                case 4
             WImage4=a1;
             WImage4（1:641:512）=512;
             WImage4cl=mat2gray（WImage4）;
             figure（2）;
             subplot（111）;
             imshow（WImage4cl）;
             title（‘部分剪切后图像‘）;
             figure（1）;
             M1=WImage4cl;
             
                case 3
            WImage3=a1;
            WImage3=imrotate（WImage320‘bilinear‘‘crop‘）;
            WImage3cl=mat2gray（WImage3）;
            figure（2）;
            subplot（111）;
            imshow（WImage3cl）;
            title（‘旋转20度后图像‘）;  
            figure（1）;
            M1=WImage3cl;
                  otherwise
            disp（‘你输入的是无效数字，图像未受攻击，将直接检测水印‘）;
            subplot（234）;
            imshow（a1[]）;
            title（‘未受攻击的含水印图像‘）;
            M1=a1;
            end
end

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       1622  2018-04-29 13:53  数字水印\DCT\attack.m

     文件       5174  2018-04-29 13:53  数字水印\DCT\getmark.bmp

     文件     263222  2006-05-26 20:33  数字水印\DCT\lena.bmp

     文件       2716  2018-04-28 20:22  数字水印\DCT\mark.png

     文件        653  2006-05-28 15:34  数字水印\DCT\nc.m

     文件        727  2006-05-25 11:25  数字水印\DCT\psnr.m

     文件      33968  2018-04-29 13:43  数字水印\DCT\result\DCT1.jpg

     文件      33172  2018-04-29 13:43  数字水印\DCT\result\DCT2.jpg

     文件      34481  2018-04-29 13:46  数字水印\DCT\result\DCT3_1.jpg

     文件      61923  2018-04-29 13:46  数字水印\DCT\result\DCT3_2.jpg

     文件      27327  2018-04-29 13:46  数字水印\DCT\result\DCT4_1.jpg

     文件      48836  2018-04-29 13:46  数字水印\DCT\result\DCT4_2.jpg

     文件       4232  2018-04-29 13:23  数字水印\DCT\watermark.asv

     文件       2416  2018-04-29 13:54  数字水印\DCT\watermark.m

     文件       1622  2018-04-29 13:53  数字水印\DWT\attack.m

     文件     263222  2006-05-26 20:33  数字水印\DWT\lena.bmp

     文件       2716  2018-04-28 20:22  数字水印\DWT\mark.png

     文件        653  2006-05-28 15:34  数字水印\DWT\nc.m

     文件        727  2006-05-25 11:25  数字水印\DWT\psnr.m

     文件      34476  2018-04-29 13:55  数字水印\DWT\result\DWT1.jpg

     文件      33565  2018-04-29 13:56  数字水印\DWT\result\DWT2.jpg

     文件      27852  2018-04-29 13:56  数字水印\DWT\result\DWT3_1.jpg

     文件      37275  2018-04-29 13:57  数字水印\DWT\result\DWT3_2.jpg

     文件      27852  2018-04-29 13:57  数字水印\DWT\result\DWT4_1.jpg

     文件      26788  2018-04-29 13:57  数字水印\DWT\result\DWT4_2.jpg

     文件       2808  2018-04-29 13:56  数字水印\DWT\watermark.m

     文件     403861  2018-04-29 13:52  数字水印\运行文档.docx

     目录          0  2018-04-29 14:08  数字水印\DCT\result

     目录          0  2018-04-29 13:57  数字水印\DWT\result

     目录          0  2018-04-29 13:54  数字水印\DCT

............此处省略5个文件信息