程序流程

1.图像采集
2.图像灰度化
3.图像二值化
4.计算所有连通域
5.填充所有孔洞
6.特征提取（面积+圆度）
7.显示定位、面积等

本次实验重点知识：熟悉开发流程

环境

自己的笔记本摄像头，自己的桌子

相关代码：

* Image Acquisition 01: Code generated by Image Acquisition 01
open_framegrabber ('DirectShow', 1, 1, 0, 0, 0, 0, 'default', 8, 'rgb', -1, 'false', 'default', '[0] ', 0, -1, AcqHandle)
grab_image_start (AcqHandle, -1)
dev_close_window ()
dev_open_window (0, 0, 512, 512, 'black', WindowHandle)
while (true)
    grab_image_async (Image, AcqHandle, -1)
    * Image Acquisition 01: Do something
    rgb1_to_gray (Image, GrayImage)
    
    threshold (GrayImage, Regions, 208, 255)
    connection (Regions, Connection)
    fill_up (Connection, RegionFillUp) //填充孔洞
    select_shape (RegionFillUp, SelectedRegions, ['area','circularity'], 'and', [4441.62,0.7284], [50000,1])
    dev_display (Image)
    dev_display (SelectedRegions)
    area_center (SelectedRegions, Area, Row, Column)
    disp_message (WindowHandle,'面积：'+Area+'坐标：（'+Row+','+ Column+')', 'window', 12, 12, 'black', 'true') //显示坐标面积之类的
endwhile
close_framegrabber (AcqHandle)

识别效果

效果1：

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