area_holes算子

学习一些入门的halcon例子,非专业图像处理，个人爱好自学，希望坚持学习下去

 

获取空洞区域的面积

* This example demonstrates the use of the operator area_holes.
*
* Setup display window
dev_close_window ()

*读取图片
read_image (Image, 'rings_and_nuts')

*根据图片大小打开窗口，设置颜色，设置字体，展示图片
dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
dev_set_color ('goldenrod')
set_display_font (WindowHandle, 16, 'mono', 'true', 'false')
dev_display (Image)
*
* Create a region

*二值化区域，
threshold (Image, Region, 128, 255)
*
* Compute the area of the holes of the region

*计算区域孔洞面积
area_holes (Region, Area)

*显示孔洞区域信息
disp_message (WindowHandle, 'Size of enclosed area (holes): ' + Area + ' pixel', 'window', 12, 12, 'black', 'true')
*