halconselect_obj从区域集或轮廓集中选择一个区域或轮廓

在HDevelop中

read_image (Image, 'D:/bb/tu/4.jpg')
rgb1_to_gray(Image,Image1)

threshold (Image1, Region,[80,87,206,195] , [90,100, 228,205])
select_obj (Region, ObjectSelected, 1)
*从区域集中选择一个区域
*参数1：区域集
*参数2：输出区域
*参数3：区域索引号【从1开始】


get_image_size (Image1, Width, Height)
dev_open_window(10,10,Width, Height,'black',WindowHandle)
dev_display(Region)

dev_open_window(10,100,Width, Height,'black',WindowHandle1)
dev_display(ObjectSelected)

在Qt Creator中

  HObject  ho_Image, ho_Image1, ho_Region, ho_ObjectSelected;
  HTuple  hv_Width, hv_Height, hv_WindowHandle;
  HTuple  hv_WindowHandle1;

  ReadImage(&ho_Image, "D:/bb/tu/4.jpg");
  Rgb1ToGray(ho_Image, &ho_Image1);

  Threshold(ho_Image1, &ho_Region, (((HTuple(80).Append(87)).Append(206)).Append(195)), 
      (((HTuple(90).Append(100)).Append(228)).Append(205)));
  SelectObj(ho_Region, &ho_ObjectSelected, 1);
  //从区域集中选择一个区域
  //参数1：区域集
  //参数2：输出区域
  //参数3：区域索引号【从1开始】


  GetImageSize(ho_Image1, &hv_Width, &hv_Height);
  SetWindowAttr("background_color","black");
  OpenWindow(10,10,hv_Width,hv_Height,0,"visible","",&hv_WindowHandle);
  HDevWindowStack::Push(hv_WindowHandle);
  if (HDevWindowStack::IsOpen())
    DispObj(ho_Region, HDevWindowStack::GetActive());

  SetWindowAttr("background_color","black");
  OpenWindow(10,100,hv_Width,hv_Height,0,"visible","",&hv_WindowHandle1);
  HDevWindowStack::Push(hv_WindowHandle1);
  if (HDevWindowStack::IsOpen())
    DispObj(ho_ObjectSelected, HDevWindowStack::GetActive());