基于halcon的目标定位与方向确定实例

原图

代码

dev_close_window ()
*读取图像
read_image (Image, 'E:/Halcon_Learn/定位方向_画箭头/clip.png')
*获得图像尺寸
get_image_size (Image, Width, Height)
*打开图像大小的窗口
dev_open_window (0, 0, Width, Height, 'black', WindowHandle)
*灰度化
rgb1_to_gray (Image, GrayImage)
*阈值化
threshold (GrayImage, Regions, 0, 67)
*区域化分块
connection (Regions, ConnectedRegions)
*特征筛选（面积）
select_shape (ConnectedRegions, SelectedRegions, 'area', 'and', 4380.1, 10000)
*统计符合区域个数
count_obj (SelectedRegions, Number)
*最小外接矩形
 smallest_rectangle2 (SelectedRegions, Row, Column, Phi, Length1, Length2)
*设置画笔颜色
 dev_set_color ('green')
*设置填充形式
 dev_set_draw ('margin')
 *设置线宽
 dev_set_line_width (3)
 *设置字体大小
 set_display_font (WindowHandle, 24, 'mono', 'true', 'false')
*显示原图
 dev_display (Image)
*通过最小外接矩形参数生成矩形
 gen_rectangle2 (Rectangle, Row, Column, Phi, Length1, Length2)
*求目标各区域的旋转角度
 orientation_region (SelectedRegions, Phi1)
*求目标各区域的中心
 area_center (SelectedRegions, Area, Row1, Column1)
 
 *设置画笔颜色
 dev_set_color ('red')
 *画区域目标方向箭头
 disp_arrow (WindowHandle, Row1, Column1, Row1+Length1*cos(Phi1+1.5708), Column1+Length1*sin(Phi1+1.5708), 1)
 *设置画笔颜色
 dev_set_color ('blue')

*循环显示目标提示语
 set_tposition (WindowHandle,10,10)
 write_string (WindowHandle, '目标定位结果如下：')
*设置字体大小
 set_display_font (WindowHandle, 16, 'mono', 'true', 'false')
for i := 0 to Number-1 by 1
    set_tposition (WindowHandle, Row1[i], Column1[i])
    write_string (WindowHandle, '第'+(i+1)+'个')
endfor

*保存窗口显示结果
dump_window (WindowHandle, 'png', '定位方向')

结果

本文地址：https://blog.csdn.net/qq_39467811/article/details/109002751