跟我学机器视觉-HALCON学习例程中文详解-FUZZY检测用于开关引脚测量

2023年4月9日下午11:53 • 机器学习

跟我学机器视觉-HALCON学习例程中文详解-FUZZY检测用于开关引脚测量

* This example program demonstrates the basic usage of a fuzzy measure object.

* Here, the task is to determine the width of and the distance between the

* pins of a switch.

* First, read in the image and initialize the program.

***********************打开图像，获取图像宽度，高度***********************

read_image (Image, 'bin_switch/bin_switch_2')

get_image_size (Image, Width, Height)

p_reopen_window_fit (0, 0, Width, Height, 640, WindowHandle)

p_set_font (WindowHandle)

dev_display (Image)

************************显示图像如下：注意中间引脚反光**********************

* Define the rectangular ROI within which the edges will be detected

* and create the measure.

Row := 290

Column := 170

Phi := rad(-130)

Length1 := 60

Length2 := 10

Interpolation := 'nearest_neighbor'

*************************生成测量矩形ROI，注意角度为-130度*********************

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 := 0.9

Threshold := 10

Transition := 'all'

Select := 'all'

**************进行测量，并显示检测结果，可以看出，中间的引脚检测结果不正确****

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

* Visualize the results

dev_display (Image)

dev_set_draw ('margin')

dev_set_color ('black')

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

p_disp_dimensions (RowEdgeFirst, ColumnEdgeFirst, RowEdgeSecond, ColumnEdgeSecond, IntraDistance, InterDistance, Phi, Length2, WindowHandle)

***************************放大后图像如下**************************************

*******************************检测框角度为-130时，Threshold怎么变都不行，*******************************Transition改为*****negative_strongest也不行*******

*****************Any question， Contact Q： 1613985351*******************

************************解决方法一：检测角度为50度时，检测结果正常**********

********解决方法二：使用FUZZY检测,已知引脚宽度为9个像素左右****************

stop ()

* Due to the reflections on the middle pin, its width cannot be determined correctly.

* As we know that the pins appear approximately 9 pixels wide, it is very easy to expand the measure to a

* fuzzy measure that will only return pairs that have a width of approximately the given size.

* First, create a fuzzy function that returns 1.0 for the given pair size and 0.0 for values that

* deviate more than 2 pixels from the given pair size.

*************************创建SIZE范围函数**********************************

create_funct_1d_pairs ([7,9,11], [0.0,1.0,0.0], SizeFunction)

* Then, expand the measure to a fuzzy measure that will return only pairs of approximately the given size.

SetType := 'size'

*************************创建测量句柄****************************************

set_fuzzy_measure (MeasureHandle, SetType, SizeFunction)

************设为Fuzzy检测时，中间引脚找到第一条边时，再找另一条边，宽度必须在8-10之间，因此中间那条边界被忽略，刚好找的正确边缘，否则找不到****************

* Finally, determine all edge pairs that have a negative transition and approximately the given size.

Sigma := 0.9

AmpThresh := 12

FuzzyThresh := 0.5

Transition := 'negative'

Select := 'all'

******************************fuzzy检测，使用创建的测量句柄*******************

fuzzy_measure_pairs (Image, MeasureHandle, Sigma, AmpThresh, FuzzyThresh, Transition, RowEdgeFirst, ColumnEdgeFirst, AmplitudeFirst, RowEdgeSecond, ColumnEdgeSecond, AmplitudeSecond, RowEdgeCenter, ColumnEdgeCenter, FuzzyScore, IntraDistance, InterDistance)

********************将检测结果显示出来，可以看出现在测量结果正确了*************

* And again, visualize the results

dev_display (Image)

dev_set_draw ('margin')

dev_set_color ('black')

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

p_disp_dimensions (RowEdgeFirst, ColumnEdgeFirst, RowEdgeSecond, ColumnEdgeSecond, IntraDistance, InterDistance, Phi, Length2, WindowHandle)