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3近年来,数字水印技术研究取得了很大的进步,下面对一些典型的算法进行了分析,除特别指明外,这些算法主要针对图像数据(某些算法也适合视频和音频数
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0水印提取时视觉效果很好,但是nc值却很低,求解决方案
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1开源代码,一个字符不少,拷贝下去自己排一下格式。 log边缘算子法 ==================================================== #define EXTRA_NAME "@log
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4数字水印技术的基本原理数字水印的思想源于古代的隐写术,是通过一定的算法将一些标志性信息直接嵌到多媒体内容当中,但不影响原内容的价值和使用,并
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0通过概率设置生成
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0详情:1164952502。。。 验证码:$$$$$$
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0仿真。。。。
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0发帖~~~~~~~~~~~发帖~~~~~~~~~~~发帖~~~~~~~~~~~发帖~~~~~~~~~~~发帖~~~~~~~~~~~发帖~~~~~~~~~~~
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0有点小特色
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0每天打卡。。。这领导,真是蛋疼。。。
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0专业网络安全方案咨询
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0#define EXTRA_NAME "@walshtransform."#include "loadbmp.h" #define Point(x,y) lpPoints[(x)+(y)*nWidth] void WALh(double *f, double *W, int power){int count;int i,j,k,bfsize,p;double *X1,*X2,*X; count=1<<power;X1=(double *)malloc(sizeof(double)*count);X2=(double *)malloc(sizeof(double)*count);memcpy(X1,f,sizeof(double)*count);for(k=0;k<power;k++){for(j=0;j<1<<k;j++){bfsize=1<<(power-k);for(i=0;i<bfsize/2;i++){p=j*bfsize;X2[i+p]=X1[i+p]+X1[i+p+bfsize/2];X2[i+p+bfsize/2]=X1[i+p]-X1[i+p+bfsize/2];}}X=X1;X1=X2;X2=X;}for(j=0;j<count;j++){p=0;for(i=0;i<power;i++){if (j
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1#define EXTRA_NAME "@cornermirror."#include "loadbmp.h" void CornerMirror(){int x,y;BYTE *lpTemp=new BYTE[nByteWidth*nHeight];for(y=0;y<n
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1#define EXTRA_NAME "@gausssmooth."#include "loadbmp.h" #define In(x,y) lpInput[(x)+(y)*nWidth]#define Out(x,y) lpOutput[(x)+(y)*nWidth]#defi
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1#define EXTRA_NAME "@histogrameq."#include "loadbmp.h" #define Point(x,y) lpPoints[(x)+(y)*nWidth] void HistogramEq(){int x,y;BYTE *lpPoints
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1#define EXTRA_NAME "@histogrameq."#include "loadbmp.h" #define Point(x,y) lpPoints[(x)+(y)*nWidth] void HistogramEq(){int x,y;BYTE *lpPoints
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1#define EXTRA_NAME "@hormirror."#include "loadbmp.h" void HorzMirror(){int x,y;BYTE *lpTemp=new BYTE[nByteWidth*nHeight];for(y=0;y<nHeigh
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0#define EXTRA_NAME "@bivalue."#include "loadbmp.h" #define threshold 128#define Point(x,y) lpPoints[(x)+(y)*nWidth] void BiValue(){BYTE *lpP
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0#define EXTRA_NAME "@prewitteedge."#include "loadbmp.h" #define Point(x,y) lpPoints[(x)+(y)*nWidth]#define Point1(x,y) lpPoints1[(x)+(y)*nWi
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1#define EXTRA_NAME "@peppernoise."#include "loadbmp.h" void Pepper_Noise(){if (lpBitmap==0) return;int x,y,p;srand((unsigned)time(NULL));for