halcon-reduce_domain获取区域图像

在HDevelop中

ma.jpg

 

read_image(Image,'D:/bb/tu/ma.jpg')
dev_open_window(0,0,500,300,'black',WindowHandle)
dev_display(Image)
get_image_size (Image, Width, Height)
draw_rectangle1 (WindowHandle, Row1, Column1, Row2, Column2)
gen_rectangle1 (Rectangle, Row1, Column1, Row2, Column2)

reduce_domain(Image,Rectangle,ImageReduced)
*获取区域图像,注意：并不缩小图像的实际尺寸
*参数1：输入的图像
*参数2：输入的区域
*参数3：输出的图像，是Image中Region的那部分图像

dev_open_window(0,0,500,300,'black',WindowHandle1)
dev_display(ImageReduced)
get_image_size (Image, Width1, Height1)

 

 

在QtCreator中

    HObject  ho_Image, ho_Rectangle, ho_ImageReduced;
    HTuple  hv_WindowHandle, hv_Width, hv_Height;
    HTuple  hv_Row1, hv_Column1, hv_Row2, hv_Column2, hv_WindowHandle1;
    HTuple  hv_Width1, hv_Height1;

    ReadImage(&ho_Image, "D:/bb/tu/ma.jpg");
    SetWindowAttr("background_color","black");
    OpenWindow(0,0,500,300,0,"visible","",&hv_WindowHandle);
    HDevWindowStack::Push(hv_WindowHandle);
    if (HDevWindowStack::IsOpen())
      DispObj(ho_Image, HDevWindowStack::GetActive());
    GetImageSize(ho_Image, &hv_Width, &hv_Height);
    DrawRectangle1(hv_WindowHandle, &hv_Row1, &hv_Column1, &hv_Row2, &hv_Column2);
    GenRectangle1(&ho_Rectangle, hv_Row1, hv_Column1, hv_Row2, hv_Column2);

    ReduceDomain(ho_Image, ho_Rectangle, &ho_ImageReduced);
      //获取区域图像,注意：并不缩小图像的实际尺寸
      //参数1：输入的图像
      //参数2：输入的区域
      //参数3：输出的图像，是Image中Region的那部分图像

    SetWindowAttr("background_color","black");
    OpenWindow(0,0,500,300,0,"visible","",&hv_WindowHandle1);
    HDevWindowStack::Push(hv_WindowHandle1);
    if (HDevWindowStack::IsOpen())
      DispObj(ho_ImageReduced, HDevWindowStack::GetActive());
    GetImageSize(ho_Image, &hv_Width1, &hv_Height1);