上海专业微信网站开发公司,公司网站用个人备案 2018,建设手机网站的方案,青岛网站制作seo文章目录 工程效果重要代码完整代码参考 工程效果
载入图片#xff0c;并在左侧显示原始图片、二值化图片和灰度图片。 双击左侧的图片控件#xff0c;可以在右侧的大控件中#xff0c;显示双击的图片。
初始画面#xff1a; 载入图片#xff1a; 双击左侧的第二个控件… 文章目录 工程效果重要代码完整代码参考 工程效果
载入图片并在左侧显示原始图片、二值化图片和灰度图片。 双击左侧的图片控件可以在右侧的大控件中显示双击的图片。
初始画面 载入图片 双击左侧的第二个控件显示图片 //对图片显示在控件中的位置没有进行优化。
重要代码
主要是用的MFC Image控件。
载入图片
void CGDITESTDlg::OnBnClickedBtnStart()
{//获取图像文件CFileDialog filedlg(TRUE,_T(png),NULL,0,TEXT(image Files(*.bmp;*.jpg;*.png)|*.bmp;*.jpg;*.png|all files(*.*)|(*.*)||),this);filedlg.DoModal();m_cstr_filepath filedlg.GetPathName();m_cstr_filename filedlg.GetFileName();if (m_cstr_filepath.IsEmpty() || m_cstr_filename.IsEmpty()){AfxMessageBox(TEXT(打开文件失败));return ;} image_origin.Load(m_cstr_filepath);image_binarization.Load(m_cstr_filepath);image_grey.Load(m_cstr_filepath);//获取图像尺寸imgw image_origin.GetWidth();imgh image_origin.GetHeight();img_t imgw / imgh;//根据图像尺寸调整控件客户区尺寸比例CRect rect_ctl;m_ctl_pic_origin.GetClientRect(rect_ctl);float rectw rect_ctl.Width();float recth rect_ctl.Height();float rect_t rectw / recth;if(rect_t img_t){rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Width(), rect_ctl.Width() / img_t ));}else{rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Height() * img_t, rect_ctl.Height()));}//显示图像到控件客户区CDC* pdc m_ctl_pic_origin.GetDC();m_ctl_pic_origin.SetBitmap(NULL); image_origin.Draw(pdc-m_hDC, rect_ctl);//图像二值化处理ImageBinarizationProcess(image_binarization);//根据图像尺寸调整控件客户区尺寸比例CRect rect_ctl_binarization;m_ctl_pic_binarization.GetClientRect(rect_ctl_binarization);float rectw_ rect_ctl_binarization.Width();float recth_ rect_ctl_binarization.Height();float rect_t_ rectw / recth;if (rect_t_ img_t){rect_ctl_binarization CRect(rect_ctl_binarization.TopLeft(), CSize(rect_ctl_binarization.Width(), rect_ctl_binarization.Width() / img_t));}else{rect_ctl_binarization CRect(rect_ctl_binarization.TopLeft(), CSize(rect_ctl_binarization.Height() * img_t, rect_ctl_binarization.Height()));}//显示图像到控件客户区CDC* pdc_ m_ctl_pic_binarization.GetDC();m_ctl_pic_binarization.SetBitmap(NULL);image_binarization.Draw(pdc_-m_hDC, rect_ctl_binarization);//图像灰度处理ImageGreyProcess(image_grey);//根据图像尺寸调整控件客户区尺寸比例CRect rect_ctl_grey;m_ctl_pic_grey.GetClientRect(rect_ctl_grey);float rectw__ rect_ctl_grey.Width();float recth__ rect_ctl_grey.Height();float rect_t__ rectw / recth;if (rect_t__ img_t){rect_ctl_grey CRect(rect_ctl_grey.TopLeft(), CSize(rect_ctl_grey.Width(), rect_ctl_grey.Width() / img_t));}else{rect_ctl_grey CRect(rect_ctl_grey.TopLeft(), CSize(rect_ctl_grey.Height() * img_t, rect_ctl_grey.Height()));}//显示图像到控件客户区CDC* pdc__ m_ctl_pic_grey.GetDC();m_ctl_pic_grey.SetBitmap(NULL);image_grey.Draw(pdc__-m_hDC, rect_ctl_grey);isLoadedImage true;m_ctl_pic_origin.ReleaseDC(pdc);m_ctl_pic_binarization.ReleaseDC(pdc);m_ctl_pic_grey.ReleaseDC(pdc);
}图像二值化处理 算法来源CMFC打开图片、彩图,以及对图像进行简单算法处理
void CGDITESTDlg::ImageBinarizationProcess(CImage image)
{BYTE* pimagedata (BYTE*)image.GetBits(); //获取到图片内存点的位置int width image.GetWidth();int height image.GetHeight();int pit image.GetPitch();//图像每行字节数int bytes_per_pixel image.GetBPP() / 8; //获取每像素的位数除以8得到每个像素占的字节数std::vectorint gray(256); //初始化时自动存0用来存放256种颜色出现的次数for (int i 0; i height; i){for (int j 0; j width; j){gray.at((int)*(pimagedata pit * i bytes_per_pixel * j)) 1;}}int max 0;int sec 0;int localmax 0;int localsec 0;for (int i 0; i 256; i){if (gray[i] max){max gray[i];localmax i;}}for (int i 0; i 256; i){if (gray[i] sec abs(i - localmax) 10){sec gray[i];localsec i;}}int mid (localmax localsec) / 2;for (int i 0; i height; i){for (int j 0; j width; j){if ((int)(*(pimagedata pit * i j * bytes_per_pixel)) mid){*(pimagedata pit * i j * bytes_per_pixel) 0;*(pimagedata pit * i j * bytes_per_pixel 1) 0;*(pimagedata pit * i j * bytes_per_pixel 2) 0;}else{*(pimagedata pit * i j * bytes_per_pixel) 255;*(pimagedata pit * i j * bytes_per_pixel 1) 255;*(pimagedata pit * i j * bytes_per_pixel 2) 255;}}}
}灰度处理 算法来源CMFC打开图片、彩图,以及对图像进行简单算法处理
void CGDITESTDlg::ImageGreyProcess(CImage image)
{BYTE* pimagedata (BYTE*)image.GetBits(); //获取到图片内存点的位置int width image.GetWidth();int height image.GetHeight();int pit image.GetPitch();//图像每行字节数int bytes_per_pixel image.GetBPP() / 8; //获取每像素的位数除以8得到每个像素占的字节数for (int i 0; i height; i){for (int j 0; j width; j){*(pimagedata pit * i j * bytes_per_pixel) * 0.114;*(pimagedata pit * i j * bytes_per_pixel 1) * 0.587;*(pimagedata pit * i j * bytes_per_pixel 2) * 0.299;}}}双击左侧控件的响应
void CGDITESTDlg::OnLButtonDblClk(UINT nFlags, CPoint point)
{if (!isLoadedImage) //如果没有加载图片则不会执行后续代码return;//未使用仅测试CPoint ptCursor;GetCursorPos(ptCursor);//获取执行此函数时的鼠标位置屏幕坐标ClientToScreen(point); //point是双击时的鼠标位置坐标系是窗口客户区所以要转换成屏幕坐标//未使用仅测试CPoint ptCursor1(GetCurrentMessage()-pt); //双击时的鼠标位置屏幕坐标GetDlgItem(IDC_PIC_ORIGIN)-GetWindowRect(rc_origin);//控件的rect屏幕坐标if (rc_origin.PtInRect(point))//如果右键在picture control区域抬起则放大显示灰度图片{CRect rect_ctl;m_ctl_pic_dsp.GetClientRect(rect_ctl);float rectw rect_ctl.Width();float recth rect_ctl.Height();float rect_t rectw / recth;if (rect_t img_t){rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Width(), rect_ctl.Width() / img_t));}else{rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Height() * img_t, rect_ctl.Height()));}CDC* pdc m_ctl_pic_dsp.GetDC();m_ctl_pic_dsp.SetBitmap(NULL);image_origin.Draw(pdc-m_hDC, rect_ctl);m_ctl_pic_dsp.ReleaseDC(pdc);return;}GetDlgItem(IDC_PIC_PROCESS)-GetWindowRect(rc_binarization);if (rc_binarization.PtInRect(point))//如果右键在picture control区域抬起则放大显示灰度图片{CRect rect_ctl;m_ctl_pic_dsp.GetClientRect(rect_ctl);float rectw rect_ctl.Width();float recth rect_ctl.Height();float rect_t rectw / recth;if (rect_t img_t){rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Width(), rect_ctl.Width() / img_t));}else{rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Height() * img_t, rect_ctl.Height()));}CDC* pdc m_ctl_pic_dsp.GetDC();m_ctl_pic_dsp.SetBitmap(NULL);image_binarization.Draw(pdc-m_hDC, rect_ctl);m_ctl_pic_dsp.ReleaseDC(pdc);return;}GetDlgItem(IDC_PIC_PROCESS2)-GetWindowRect(rc_grey);if (rc_grey.PtInRect(point))//如果右键在picture control区域抬起则放大显示灰度图片{CRect rect_ctl;m_ctl_pic_dsp.GetClientRect(rect_ctl);float rectw rect_ctl.Width();float recth rect_ctl.Height();float rect_t rectw / recth;if (rect_t img_t){rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Width(), rect_ctl.Width() / img_t));}else{rect_ctl CRect(rect_ctl.TopLeft(), CSize(rect_ctl.Height() * img_t, rect_ctl.Height()));}CDC* pdc m_ctl_pic_dsp.GetDC();m_ctl_pic_dsp.SetBitmap(NULL);image_grey.Draw(pdc-m_hDC, rect_ctl);m_ctl_pic_dsp.ReleaseDC(pdc);return;}CDialogEx::OnLButtonDblClk(nFlags, point);
}
以上是通过窗口的双击时间回调函数判断双击时鼠标的坐标是否在控件的坐标Rect中如果是则执行对应代码。
也可以把双击的空间的notify属性设置为true然后再时间中设置双击消息回调函数。
完整代码
MFC简单的图片处理工程-Gitee
参考
CMFC打开图片、彩图,以及对图像进行简单算法处理
