halconrectangle1_domain获取指定矩形区域的图像

ma.jpg

 在HDevelop中

read_image (Image, 'D:/bb/tu/ma.jpg')
dev_open_window(0,0,500,300,'black',WindowHandle)

dev_display(Image)

rectangle1_domain(Image,Image1,33,160,118,270)
*获取指定矩形区域的图像
*参数1:原图像
*参数2:用来保存新图像
*参数3:矩形左上角y坐标
*参数4:矩形左上角x坐标
*参数5:矩形右下角y坐标
*参数6:矩形右下角x坐标
*注意：新图像的大小与原图像相同

dev_open_window(0,400,500,300,'black',WindowHandle1)
dev_display(Image1)

在QtCreator中

    HObject  ho_Image;
    ReadImage(&ho_Image, "D:/bb/tu/ma.jpg");

    HTuple  hv_WindowHandle;
    SetWindowAttr("background_color","black");
    OpenWindow(0,100,500,300,0,"visible","",&hv_WindowHandle);

    HDevWindowStack::Push(hv_WindowHandle);

    if (HDevWindowStack::IsOpen()){

       DispObj(ho_Image, HDevWindowStack::GetActive());

   }

    HTuple  hv_WindowHandle1;
    HObject  ho_Image1;
    Rectangle1Domain(ho_Image, &ho_Image1, 33, 160, 118, 270);//获取指定矩形区域的图像
      //参数1:原图像
      //参数2:用来保存新图像
      //参数3:矩形左上角y坐标
      //参数4:矩形左上角x坐标
      //参数5:矩形右下角y坐标
      //参数6:矩形右下角x坐标
      //注意：新图像的大小与原图像相同


    SetWindowAttr("background_color","black");
    OpenWindow(0,500,500,300,0,"visible","",&hv_WindowHandle1);

    HDevWindowStack::Push(hv_WindowHandle1);

    if (HDevWindowStack::IsOpen()){

       DispObj(ho_Image1, HDevWindowStack::GetActive());

   }

注意事项

Rectangle1Domain截取图像后，不能转化为Mat和QImage，否则截取效果失效

    HObject  ho_Image;
    ReadImage(&ho_Image, "D:/bb/tu/ma.jpg");

    HTuple  hv_WindowHandle;
    SetWindowAttr("background_color","black");
    OpenWindow(0,100,500,300,0,"visible","",&hv_WindowHandle);

    HDevWindowStack::Push(hv_WindowHandle);

    if (HDevWindowStack::IsOpen()){

       DispObj(ho_Image, HDevWindowStack::GetActive());

   }

    HTuple  hv_WindowHandle1;
    HObject  ho_Image1;
    Rectangle1Domain(ho_Image, &ho_Image1, 33, 160, 118, 270);
      
    cv::Mat src=HObject2Mat(ho_Image1); //转化为Mat
    cv::imshow("src",src);

 转化为Mat后，截取效果失效