1.10 halcon上位机利用测量助手实现圆弧长度测量

在前面一帖子中使用代码实现圆弧的长度测量。
当前也可以使用测量助手，会更加直观。
首先打开测量助手窗口。
在输入选项卡中打开图片C:/Users/Public/Documents/MVTec/HALCON-17.12-Progress/examples/images/zeiss1.png
使用工具栏上的绘制圆弧工具在图上绘制圆弧确认测量范围。
在边缘选项卡内微调节参数，观察图片上边缘的提取效果。

1.10 halcon上位机利用测量助手实现圆弧长度测量

可以结果选项卡查看测量结果。
也可在代码生成选项卡上，点击按钮插入代码，进行代码 编辑

1. * Measure 01: Code generated by Measure 01
   
2. * Measure 01: Prepare measurement
   
3. AmplitudeThreshold := 5
   
4. RoiWidthLen2 := 5
   
5. set_system ('int_zooming', 'true')
   
6. * Measure 01: Coordinates for circular arc Measure 01 [0]
   
7. ArcRow_Measure_01_0 := 269.882
   
8. ArcColumn_Measure_01_0 := 335.685
   
9. ArcRadius_Measure_01_0 := 99.6761
   
10. ArcAngleStart_Measure_01_0 := -0.282035
    
11. ArcAngleExtent_Measure_01_0 := 1.85283
    
12. * Measure 01: Create measure for circular arc Measure 01 [0]
    
13. * Measure 01: Attention: This assumes all images have the same size!
    
14. gen_measure_arc (ArcRow_Measure_01_0, ArcColumn_Measure_01_0, ArcRadius_Measure_01_0, ArcAngleStart_Measure_01_0, ArcAngleExtent_Measure_01_0, max2(1, min2(RoiWidthLen2, ArcRadius_Measure_01_0)), 679, 557, 'nearest_neighbor', MsrHandle_Measure_01_0)
    
15. * Measure 01: ***************************************************************
    
16. * Measure 01: * The code which follows is to be executed once / measurement *
    
17. * Measure 01: ***************************************************************
    
18. * Measure 01: Load image
    
19. read_image (Image, 'C:/Users/Public/Documents/MVTec/HALCON-17.12-Progress/examples/images/zeiss1.png')
    
20. * Measure 01: Execute measurements
    
21. measure_pos (Image, MsrHandle_Measure_01_0, 0.4, AmplitudeThreshold, 'all', 'all', Row_Measure_01_0, Column_Measure_01_0, Amplitude_Measure_01_0, Distance_Measure_01_0)
    
22. * Measure 01: Do something with the results
    
23. * Measure 01: Clear measure when done
    
24. close_measure (MsrHandle_Measure_01_0)

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