本次实验均不用新建对话框

创建菜单

为各项功能分别添加函数

中值滤波

窗口大小为 3*3

// TODO: 在此添加命令处理程序代码CMFCApplication3Doc* pDoc = GetDocument();// 获取文档LPSTR	lpDIB;     // 指向DIB的指针LPSTR   lpDIBBits;// 指向DIB象素指针int iFilterH;// 滤波器的高度int iFilterW;// 滤波器的宽度int iFilterMX;// 中心元素的X坐标int iFilterMY;// 中心元素的Y坐标// 锁定DIBlpDIB = (LPSTR) ::GlobalLock((HGLOBAL)pDoc->GetHObject());// 找到DIB图像象素起始位置lpDIBBits = pDoc->m_dib.GetBits(lpDIB);// 判断是否是8-bpp位图（这里为了方便，只处理8-bpp位图的中值滤波，其它的可以类推）if (pDoc->m_dib.GetColorNum(lpDIB) != 256){AfxMessageBox(L"对不起，不是256色位图！");// 提示用户::GlobalUnlock((HGLOBAL)pDoc->GetHObject());// 解除锁定return;                                         // 返回}// 初始化变量值iFilterH = 3;iFilterW = 1;iFilterMX = 0;iFilterMY = 1;// 更改光标形状BeginWaitCursor();// 调用MedianFilter()函数中值滤波if (MedianFilter(lpDIBBits, pDoc->m_dib.GetWidth(lpDIB), pDoc->m_dib.GetHeight(lpDIB), iFilterH, iFilterW, iFilterMX, iFilterMY)){// 设置脏标记pDoc->SetModifiedFlag(TRUE);// 更新视图pDoc->UpdateAllViews(NULL);}else{// 提示用户AfxMessageBox(L"分配内存失败！");}// 解除锁定::GlobalUnlock((HGLOBAL)pDoc->GetHObject());// 恢复光标EndWaitCursor();

这里面用到了MedianFilter

BOOL WINAPI MedianFilter(LPSTR lpDIBBits, LONG lWidth, LONG lHeight, int iFilterH, int iFilterW, int iFilterMX, int iFilterMY)
{// 指向源图像的指针unsigned char* lpSrc;// 指向要复制区域的指针unsigned char* lpDst;// 指向复制图像的指针LPSTR			lpNewDIBBits;HLOCAL			hNewDIBBits;// 指向滤波器数组的指针unsigned char* aValue;HLOCAL			hArray;// 循环变量LONG			i;LONG			j;LONG			k;LONG			l;// 图像每行的字节数LONG			lLineBytes;// 计算图像每行的字节数lLineBytes = WIDTHBYTES(lWidth * 8);// 暂时分配内存，以保存新图像hNewDIBBits = LocalAlloc(LHND, lLineBytes * lHeight);// 判断是否内存分配失败if (hNewDIBBits == NULL){// 分配内存失败return FALSE;}// 锁定内存lpNewDIBBits = (char*)LocalLock(hNewDIBBits);// 初始化图像为原始图像memcpy(lpNewDIBBits, lpDIBBits, lLineBytes * lHeight);// 暂时分配内存，以保存滤波器数组hArray = LocalAlloc(LHND, iFilterH * iFilterW);// 判断是否内存分配失败if (hArray == NULL){// 释放内存LocalUnlock(hNewDIBBits);LocalFree(hNewDIBBits);// 分配内存失败return FALSE;}// 锁定内存aValue = (unsigned char*)LocalLock(hArray);// 开始中值滤波// 行(除去边缘几行)for (i = iFilterMY; i < lHeight - iFilterH + iFilterMY + 1; i++){// 列(除去边缘几列)for (j = iFilterMX; j < lWidth - iFilterW + iFilterMX + 1; j++){// 指向新DIB第i行，第j个象素的指针lpDst = (unsigned char*)lpNewDIBBits + lLineBytes * (lHeight - 1 - i) + j;// 读取滤波器数组for (k = 0; k < iFilterH; k++){for (l = 0; l < iFilterW; l++){// 指向DIB第i - iFilterMY + k行，第j - iFilterMX + l个象素的指针lpSrc = (unsigned char*)lpDIBBits + lLineBytes * (lHeight - 1 - i + iFilterMY - k) + j - iFilterMX + l;// 保存象素值aValue[k * iFilterW + l] = *lpSrc;}}// 获取中值*lpDst = GetMedianNum(aValue, iFilterH * iFilterW);}}// 复制变换后的图像memcpy(lpDIBBits, lpNewDIBBits, lLineBytes * lHeight);// 释放内存LocalUnlock(hNewDIBBits);LocalFree(hNewDIBBits);LocalUnlock(hArray);LocalFree(hArray);// 返回return TRUE;
}

#define WIDTHBYTES(bits) (((bits) + 31) / 32 * 4);

效果

高斯滤波

模板为：

// TODO: 在此添加命令处理程序代码CMFCApplication3Doc* pDoc = GetDocument();// 获取文档LPSTR	lpDIB;     // 指向DIB的指针LPSTR   lpDIBBits;// 指向DIB象素指针int iTempH;      // 模板高度int iTempW;      // 模板宽度FLOAT fTempC;    // 模板系数int iTempMX;     // 模板中心元素X坐标int iTempMY;     // 模板中心元素Y坐标FLOAT aValue[9]; // 模板元素数组// 锁定DIBlpDIB = (LPSTR) ::GlobalLock((HGLOBAL)pDoc->GetHObject());// 找到DIB图像象素起始位置lpDIBBits = pDoc->m_dib.GetBits(lpDIB);// 判断是否是8-bpp位图（这里为了方便，只处理8-bpp位图的平滑，其它的可以类推）if (pDoc->m_dib.GetColorNum(lpDIB) != 256){AfxMessageBox(L"对不起，不是256色位图！");// 提示用户::GlobalUnlock((HGLOBAL)pDoc->GetHObject());// 解除锁定return;                                         // 返回}// 给模板数组赋初值（为平均模板）aValue[0] = 1.0;aValue[1] = 2.0;aValue[2] = 1.0;aValue[3] = 2.0;aValue[4] = 4.0;aValue[5] = 2.0;aValue[6] = 1.0;aValue[7] = 2.0;aValue[8] = 1.0;// 设定平移量（3*3）iTempH = 3;iTempW = 3;iTempMX = 1;iTempMY = 1;fTempC = (FLOAT)(1.0 / 16.0);// 更改光标形状BeginWaitCursor();// 调用Template()函数平滑DIBif (Template(lpDIBBits, pDoc->m_dib.GetWidth(lpDIB), pDoc->m_dib.GetHeight(lpDIB), iTempH, iTempW, iTempMX, iTempMY, aValue, fTempC)){pDoc->SetModifiedFlag(TRUE);// 设置脏标记pDoc->UpdateAllViews(NULL);// 更新视图}else{// 提示用户AfxMessageBox(L"分配内存失败！");}// 解除锁定::GlobalUnlock((HGLOBAL)pDoc->GetHObject());// 恢复光标EndWaitCursor();

这里面用到了

BOOL WINAPI Template(LPSTR lpDIBBits, LONG lWidth, LONG lHeight, int iTempH, int iTempW, int iTempMX, int iTempMY, FLOAT* fpArray, FLOAT fCoef)
{// 指向复制图像的指针LPSTR lpNewDIBBits;HLOCAL hNewDIBBits;// 指向源图像的指针unsigned char* lpSrc;// 指向要复制区域的指针unsigned char* lpDst;// 循环变量LONG i;LONG j;LONG k;LONG l;// 计算结果FLOAT fResult;// 图像每行的字节数LONG lLineBytes;// 计算图像每行的字节数lLineBytes = WIDTHBYTES(lWidth * 8);// 暂时分配内存，以保存新图像hNewDIBBits = LocalAlloc(LHND, lLineBytes * lHeight);// 判断是否内存分配失败if (hNewDIBBits == NULL){// 内存分配失败return FALSE;}// 锁定内存lpNewDIBBits = (char*)LocalLock(hNewDIBBits);// 初始化图像为原始图像memcpy(lpNewDIBBits, lpDIBBits, lLineBytes * lHeight);// 行(除去边缘几行)for (i = iTempMY; i < lHeight - iTempH + iTempMY + 1; i++){// 列(除去边缘几列)for (j = iTempMX; j < lWidth - iTempW + iTempMX + 1; j++){// 指向新DIB第i行，第j个象素的指针lpDst = (unsigned char*)lpNewDIBBits + lLineBytes * (lHeight - 1 - i) + j;fResult = 0;// 计算for (k = 0; k < iTempH; k++){for (l = 0; l < iTempW; l++){// 指向DIB第i - iTempMY + k行，第j - iTempMX + l个象素的指针lpSrc = (unsigned char*)lpDIBBits + lLineBytes * (lHeight - 1 - i + iTempMY - k) + j - iTempMX + l;// 保存象素值fResult += (*lpSrc) * fpArray[k * iTempW + l];}}// 乘上系数fResult *= fCoef;// 取绝对值fResult = (FLOAT)fabs(fResult);// 判断是否超过255if (fResult > 255){// 直接赋值为255*lpDst = 255;}else{// 赋值*lpDst = (unsigned char)(fResult + 0.5);}}}// 复制变换后的图像memcpy(lpDIBBits, lpNewDIBBits, lLineBytes * lHeight);// 释放内存LocalUnlock(hNewDIBBits);LocalFree(hNewDIBBits);// 返回return TRUE;
}

图像平滑

模板为

int m_x = 1;int m_y = 1;float m_C = (FLOAT)(1.0 / 9.0);// 更新文本框状态int m_1 = 1;int m_2 = 1;int m_3 = 1;int m_4 = 1;int m_5 = 1;int m_6 = 1;int m_7 = 1;int m_8 = 1;int m_9 = 1;//UpdateData(FALSE);//// TODO: 在此添加命令处理程序代码CMFCApplication3Doc* pDoc = GetDocument();LPSTR	lpDIB;// 指向DIB象素指针LPSTR   lpDIBBits;int iTempH;int iTempW;FLOAT fTempC;int iTempMX;int iTempMY;FLOAT aValue[9];lpDIB = (LPSTR) ::GlobalLock((HGLOBAL)pDoc->GetHObject());// 锁定DIBlpDIBBits = pDoc->m_dib.GetBits(lpDIB);//图像像素int lSrcWidth = pDoc->m_dib.GetWidth(lpDIB);int lSrcHeight = pDoc->m_dib.GetHeight(lpDIB);///////////////////aValue[0] = m_1;aValue[1] = m_2;aValue[2] = m_3;aValue[3] = m_4;aValue[4] = m_5;aValue[5] = m_6;aValue[6] = m_7;aValue[7] = m_8;aValue[8] = m_9;// 设定平移量（3*3）iTempH = 3;iTempW = 3;iTempMX = m_x;iTempMY = m_y;fTempC = (FLOAT)(1.0 / 9.0);BeginWaitCursor();///////////////////////////if (::Template(lpDIBBits, lSrcWidth, lSrcHeight, iTempH, iTempW, iTempMX, iTempMY, aValue, fTempC)){pDoc->SetModifiedFlag(TRUE);pDoc->UpdateAllViews(NULL);}else{AfxMessageBox(L"分配内存失败！系统提示");// 警告}::GlobalUnlock((HGLOBAL)pDoc->GetHObject());// 解除锁定

拉普拉斯锐化 4邻域

CMFCApplication3Doc* pDoc = GetDocument();LPSTR	lpDIB;// 指向DIB象素指针LPSTR   lpDIBBits;int iTempH;int iTempW;FLOAT fTempC;int iTempMX;int iTempMY;FLOAT aValue[9];lpDIB = (LPSTR) ::GlobalLock((HGLOBAL)pDoc->GetHObject());// 锁定DIBlpDIBBits = pDoc->m_dib.GetBits(lpDIB);//图像像素int lSrcWidth = pDoc->m_dib.GetWidth(lpDIB);int lSrcHeight = pDoc->m_dib.GetHeight(lpDIB);///////////////////// 设定平移量（3*3）iTempW = 3;iTempH = 3;fTempC = 1.0;iTempMX = 1;iTempMY = 1;aValue[0] = 0;aValue[1] = 1.0;aValue[2] = 0;aValue[3] = 1.0;aValue[4] = -4.0;aValue[5] = 1.0;aValue[6] = 0;aValue[7] = 1.0;aValue[8] = 0;///////////////////////////if (::Template(lpDIBBits, lSrcWidth, lSrcHeight, iTempH, iTempW, iTempMX, iTempMY, aValue, fTempC)){pDoc->SetModifiedFlag(TRUE);pDoc->UpdateAllViews(NULL);}else{AfxMessageBox(L"分配内存失败！系统提示");// 警告}::GlobalUnlock((HGLOBAL)pDoc->GetHObject());// 解除锁定