![](https://img2022.cnblogs.com/blog/1502586/202201/1502586-20220120221800438-786509633.png)
在HDevelop中
![](https://img2022.cnblogs.com/blog/1502586/202203/1502586-20220310054041494-1198259695.jpg)
read_image (Image, 'D:/bb/tu/5.jpg')
rgb1_to_gray(Image,Image1)
threshold (Image1, Region,[75] , [90])
smallest_rectangle1 (Region, Row1, Column1, Row2, Column2)
*返回最小外接正矩形数据
*参数1:输入区域
*参数2:左上角点的行坐标-y坐标
*参数3:左上角点的列坐标-x坐标
*参数4:右上角点的行坐标-y坐标
*参数5:右上角点的列坐标-x坐标
gen_rectangle1 (Rectangle, Row1, Column1, Row2, Column2)
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(Rectangle)
![](https://img2022.cnblogs.com/blog/1502586/202203/1502586-20220310054014979-1128049907.png)
在QtCreator中
HObject ho_Image, ho_Image1, ho_Region, ho_Rectangle;
HTuple hv_Row1, hv_Column1, hv_Row2, hv_Column2;
HTuple hv_Width, hv_Height, hv_WindowHandle, hv_WindowHandle1;
ReadImage(&ho_Image, "D:/bb/tu/5.jpg");
Rgb1ToGray(ho_Image, &ho_Image1);
Threshold(ho_Image1, &ho_Region, 75, 90);
SmallestRectangle1(ho_Region, &hv_Row1, &hv_Column1, &hv_Row2, &hv_Column2);
//返回最小外接正矩形数据
//参数1:输入区域
//参数2:左上角点的行坐标-y坐标
//参数3:左上角点的列坐标-x坐标
//参数4:右上角点的行坐标-y坐标
//参数5:右上角点的列坐标-x坐标
GenRectangle1(&ho_Rectangle, hv_Row1, hv_Column1, hv_Row2, hv_Column2);
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_Rectangle, HDevWindowStack::GetActive());
![](https://img2022.cnblogs.com/blog/1502586/202201/1502586-20220120221242675-908265425.png)