halcon-difference计算两个区域的差

在HDevelop中

dev_update_off()
dev_open_window(10,10,400,400,'black',WindowHandle)

gen_circle (Circle, 200, 200, 30)
gen_circle (Circle1, 200, 200, 100)

difference (Circle1, Circle, RegionDifference)



dev_display(RegionDifference)

 

 

在QtCreator中

    HObject  ho_Circle, ho_Circle1, ho_RegionDifference;
    HTuple  hv_WindowHandle;
    HObject  ho_Image;

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

    //读取图片的目的：为了设置图像缓冲区，否则区域不显示

    SetWindowAttr("background_color","black");

    OpenWindow(10,10,400,400,0,"visible","",&hv_WindowHandle);

    HDevWindowStack::SetActive(hv_WindowHandle);

    GenCircle(&ho_Circle, 200, 200, 30);

    GenCircle(&ho_Circle1, 200, 200, 100);

    Difference(ho_Circle1, ho_Circle, &ho_RegionDifference);

    DispObj(ho_RegionDifference, hv_WindowHandle);