跟我学机器视觉-HALCON学习例程中文详解-IC引脚测量

跟我学机器视觉-HALCON学习例程中文详解-IC引脚测量

• Lead Measurement: Example for the application of the measure object

• including a lot of visualization operators.

• First, the length of the leads is measured, then, their width and distance from each other.

• First, read in the image and initialize the program

read_image (Image, 'ic_pin')

*****************取得图像第一通道的指针,同时得到图像宽度高度*********

get_image_pointer1 (Image, Pointer, Type, Width, Height)

dev_close_window ()

dev_open_window_fit_image (Image, 0, 0, 509, 509, WindowHandle)

set_display_font (WindowHandle, 14, 'mono', 'true', 'false')

dev_display (Image)

****************显示图像如下：****************************************

dev_set_draw ('margin')

dev_set_line_width (3)

• Define and display the rectangular ROIs within which the edges will be detected

Row := 55

RowBottom := 955

Column := 200

Phi := rad(-90)

Length1 := 50

Length2 := 35

dev_set_color ('gray')

gen_rectangle2 (Rectangle, Row, Column, Phi, Length1, Length2)

gen_rectangle2 (Rectangle, RowBottom, Column, Phi, Length1, Length2)

*************************测量位置如绿色矩形所示下:**************************

disp_continue_message (WindowHandle, 'black', 'true')

stop ()

• Create a measure object for the ROI at the top of the image.

******获取一阶灰度剖面图的插值方法，测量矩形框与图像坐标系之间有角度时生效******

Interpolation := 'nearest_neighbor'

****************************生成测量矩形框,先测上部****************************

gen_measure_rectangle2 (Row, Column, Phi, Length1, Length2, Width, Height, Interpolation, MeasureHandle)

• Determine all edges and calculate the lead height at the top of the image

Sigma := 1.0

Threshold := 30

Transition := 'all'

Select := 'all'

**************************************进行测量********************************

measure_pos (Image, MeasureHandle, Sigma, Threshold, Transition, Select, RowEdge, ColumnEdge, Amplitude, Distance)

LeadLength1 := Distance

• Display the results

dev_set_color ('white')

***********************************将测量结果画出*****************************

disp_line (WindowHandle, RowEdge, ColumnEdge-Length2, RowEdge, ColumnEdge+Length2)

disp_message (WindowHandle, 'Lead Length: '+LeadLength1$'.2f', 'window', RowEdge[1]+40, ColumnEdge[1]+100, 'yellow', 'false')

• Shift the measure object and determine the lead height at the bottom of the image

************************转移测量框至新的参考坐标点,及测量下部******************

translate_measure (MeasureHandle, RowBottom, Column)

**************************************进行测量********************************

measure_pos (Image, MeasureHandle, Sigma, Threshold, Transition, Select, RowEdge, ColumnEdge, Amplitude, Distance)

LeadLength2 := Distance

• Display the results

dev_set_color ('white')

***********************************将测量结果画出*****************************

disp_line (WindowHandle, RowEdge, ColumnEdge-Length2, RowEdge, ColumnEdge+Length2)

disp_message (WindowHandle, 'Lead Length: '+LeadLength2$'.2f', 'window', 360, ColumnEdge[1]+100, 'red', 'false')

• Close the measure

close_measure (MeasureHandle)

disp_continue_message (WindowHandle, 'black', 'true')

stop ()

• Now, define and display a rectangular ROI perpendicular to the leads and create the measure

dev_display (Image)

Row := 47

Column := 485

Phi := 0

Length1 := 420

Length2 := 8

Interpolation := 'nearest_neighbor'

dev_set_color ('black')

*******************创建新的测量矩形ROI，如图蓝色矩形：*******************

gen_rectangle2 (Rectangle, Row, Column, Phi, Length1, Length2)

gen_measure_rectangle2 (Row, Column, Phi, Length1, Length2, Width, Height, Interpolation, MeasureHandle)

• Determine all edge pairs that have a negative transition, i.e., edge pairs

• that enclose dark regions.

Sigma := 1.0

Threshold := 30

Transition := 'negative'

Select := 'all'

******************************进行测量计算并显示结果*************************

measure_pairs (Image, MeasureHandle, Sigma, Threshold, Transition, Select, RowEdgeFirst, ColumnEdgeFirst, AmplitudeFirst, RowEdgeSecond, ColumnEdgeSecond, AmplitudeSecond, IntraDistance, InterDistance)

disp_continue_message (WindowHandle, 'black', 'true')

stop ()

dev_set_color ('white')

disp_line (WindowHandle, RowEdgeFirst, ColumnEdgeFirst, RowEdgeSecond, ColumnEdgeSecond)

avgLeadWidth := sum(IntraDistance)/|IntraDistance|

avgLeadDistance := sum(InterDistance)/|InterDistance|

numLeads := |IntraDistance|

disp_message (WindowHandle, 'Number of Leads: '+numLeads, 'window', 200, 100, 'yellow', 'false')

disp_message (WindowHandle, 'Average Lead Width: '+avgLeadWidth$'.2f', 'window', 260, 100, 'yellow', 'false')

disp_message (WindowHandle, 'Average Lead Distance: '+avgLeadDistance$'.2f', 'window', 320, 100, 'yellow', 'false')

disp_continue_message (WindowHandle, 'black', 'true')

disp_continue_message (WindowHandle, 'black', 'true')

stop ()

• Zoom in to visualize the measurement results in more detail.

• First, define and display the zoom window.

Row1 := 0

Column1 := 600

Row2 := 100

Column2 := 700

dev_set_color ('blue')

**************************设置放大区域矩形并显示,图中绿色矩形*****************

disp_rectangle1 (WindowHandle, Row1, Column1, Row2, Column2)

disp_continue_message (WindowHandle, 'black', 'true')

stop ()

• Then, zoom the image and display the results.

*********************设置图像放大区域并显示**********************************

dev_set_part (Row1, Column1, Row2, Column2)

dev_display (Image)

dev_set_color ('black')

**********************画出测量矩形ROI和测得的边缘如图*************************

dev_display (Rectangle)

p_disp_edge_marker (RowEdgeFirst, ColumnEdgeFirst, Phi, 5, 'white', 3, WindowHandle)

p_disp_edge_marker (RowEdgeSecond, ColumnEdgeSecond, Phi, 5, 'white', 3, WindowHandle)

• Close the measure

close_measure (MeasureHandle)

• Reset the display parameters.

dev_set_part (0, 0, Height-1, Width-1)

dev_set_draw ('fill')

dev_set_line_width(1)