图像模板匹配

1、BOOL CDlgRecMatch:TemplateMatch(CDib* pDibSrc, CDib* pDibTemplate)/ 指向源图像的指针LPBYTElpSrc,lpTemplateSrc;/ 指向缓存图像的指针LPBYTElpDst;/循环变量long i;long j;long m;long n;/中间结果double dSigmaST;double dSigmaS;double dSigmaT;/相似性测度double R;/最大相似性测度double dbMaxR;/最大相似性出现位置int nMaxWidth;int nMaxHeight;/像素值unsigned ch

2、ar unchPixel;unsigned char unchTemplatePixel;/ 获得图象数据存储的高度和宽度CSize sizeSaveImage;sizeSaveImage = pDibSrc->GetDibSaveDim();/ 获得模板图象数据存储的高度和宽度CSize sizeSaveTemplate;sizeSaveTemplate = pDibTemplate->GetDibSaveDim();/ 暂时分配内存，以保存新图像CDib* pDibNew;pDibNew = new CDib;/ 如果分配内存失败，则推出if(!CopyDIB(pDibSrc,

3、pDibNew)/ 释放已分配内存pDibNew->Empty();/ 返回return FALSE;/ 初始化新分配的内存lpDst = (LPBYTE)pDibNew->m_lpImage; / 图象的高度int nImageHeight ;nImageHeight = pDibSrc->m_lpBMIH->biHeight;/ 图象的宽度int nImageWidth;nImageWidth = pDibSrc->m_lpBMIH->biWidth;/ 模板图象的高度int nTemplateHeight;nTemplateHeight = pDibT

4、emplate->m_lpBMIH->biHeight;/ 模板图象的宽度int nTemplateWidth;nTemplateWidth = pDibTemplate->m_lpBMIH->biWidth;/计算dSigmaTdSigmaT = 0;for (n = 0;n < nTemplateHeight ;n+)for(m = 0;m < nTemplateWidth ;m+)/ 指向模板图像倒数第j行，第i个象素的指针lpTemplateSrc = (LPBYTE)pDibTemplate->m_lpImage + sizeSaveTemp

5、late.cx * n + m;unchTemplatePixel = (unsigned char)*lpTemplateSrc;dSigmaT += (double)unchTemplatePixel*unchTemplatePixel;/找到图像中最大相似性的出现位置 dbMaxR = 0.0;for (j = 0;j < nImageHeight - nTemplateHeight +1 ;j+)for(i = 0;i < nImageWidth - nTemplateWidth + 1;i+)dSigmaST = 0;dSigmaS = 0;for (n = 0;n &l

6、t; nTemplateHeight ;n+)for(m = 0;m < nTemplateWidth ;m+)/ 指向源图像倒数第j+n行，第i+m个象素的指针lpSrc = (LPBYTE)pDibSrc->m_lpImage + sizeSaveImage.cx * (j+n) + (i+m);/ 指向模板图像倒数第n行，第m个象素的指针lpTemplateSrc = (LPBYTE)pDibTemplate->m_lpImage + sizeSaveTemplate.cx * n + m;unchPixel = (unsigned char)*lpSrc;unchTemplatePixel = (unsigned char)*lpTemplateSrc;dSigmaS += (double)unchPixel*unchPixel;dSigmaST += (double)unchPixel*unchTemplatePixel;/计算相似性R = dSigmaST / ( sqrt(dSigmaS)*sqrt(dSigmaT);/与最大相似性比较if (R > dbMaxR) dbMaxR = R;nMaxWidth = i;nMaxHeight = j;/输出最大相似性/ 对目标图象的象素进行赋值for(i=0; i<nImageHeigh