端子宽度测量

hanfang · 发表于 2025-8-8 20:32:24

求助各位大佬，有没有相对简单的办法测量一下端子的最宽距离（如图我画红线的宽度）另外一边不一定是直线，部分端子存在胶水所以精度不是很高，上料的角度不固定会旋转，后面的几张图片，哪位大佬能提供一下解决思路，谢谢！
捕获.PNG

雾里看花 · 发表于 2025-8-9 08:02:15

最小外接矩形，矩形宽度就是你要的东西啦

小马哥 · 发表于 2025-8-9 08:52:41

这么考虑下：
1、直接阈值分割找到整个端子区域 ※因为上料角度随机，所以考虑BLOB
2、开运算去掉小尾巴
3、找剩下区域的最小外接旋转矩形，取小边长

UKimiF · 发表于 2025-8-9 16:57:12

read_image (Image, './1.png')
*//获得区域
decompose3 (Image, R, G, B)
threshold (G, RegionO, 123, 255)
fill_up (RegionO, RegionO)
opening_circle (RegionO, RegionO, 10.5)
*//Mode1：1代表思路一,2代表思路2
Mode1:=2
if(Mode1==1)
*//思路一
*//获得基准角度
smallest_rectangle2 (RegionO, Row, Column, Phi, Length1, Length2)
*//仿射变换
hom_mat2d_identity (HomMat2D)
hom_mat2d_rotate (HomMat2D, -Phi-rad(90), Row, Column, HomMat2DR)
hom_mat2d_identity (HomMat2DI)
hom_mat2d_rotate (HomMat2DI, Phi+rad(90), Row, Column, HomMat2DRI)
affine_trans_region (RegionO, RegionOAF, HomMat2DR, 'nearest_neighbor')
*//Mode2获得转正后的区域每行的起点和终点的两种方法
*//个人推荐第二种,用纯形态学计算边缘性能会高很多
Mode2:=1
if(Mode2==1)
*1.使用Halcon自带的算子实现
get_region_runs (RegionOAF, Row1, ColB, ColE)
elseif(Mode2==2)
*2.使用自定义算子实现
*//get_region_ud_edge:目的:获取区域指定方向的边缘,输入区域,输出指定方向的边缘点
get_region_ud_edge (RegionOAF, 'Left', Row1, ColB)
get_region_ud_edge (RegionOAF, 'Right', Row1, ColE)
endif
*//获得每行的宽度并找到最大的值和对应的下标
tuple_sub (ColE, ColB, Width)
tuple_max (Width, WidthMax)
tuple_find_first (Width, WidthMax, WidthMaxIdx)
gen_arrow_contour_xld (ArrowS, Row1[WidthMaxIdx], ColB[WidthMaxIdx], Row1[WidthMaxIdx], ColE[WidthMaxIdx], 5, 5)
affine_trans_contour_xld (ArrowS, ContS, HomMat2DRI)
elseif(Mode1==2)
*//思路二
*//这一步直接就得到结果了,下面的步骤都是用于可视化的
smallest_rectangle2 (RegionO, Row, Column, Phi, Length1, WidthMax)
*//get_rect2_vertex:目的:获得旋转矩形的四个拐点,输入旋转矩形的五个参数
get_rect2_vertex (Row, Column, Phi, Length1-1, WidthMax-1,\
RowTL, ColTL, RowTR, ColTR, RowBL, ColBL, RowBR, ColBR)
distance_pp (RowTL, ColTL, RowTR, ColTR, Dis1)
distance_pp (RowTL, ColTL, RowBL, ColBL, Dis2)
if(Dis1>=Dis2)
*//上下边缘为长边
gen_contour_polygon_xld (ContL1, [RowTL,RowTR], [ColTL,ColTR])
gen_contour_polygon_xld (ContL2, [RowBL,RowBR], [ColBL,ColBR])
concat_obj (ContL1, ContL2, ContS)
gen_arrow_contour_xld (ArrowS1, (RowTL+RowTR)/2, (ColTL+ColTR)/2, (RowBL+RowBR)/2, (ColBL+ColBR)/2, 5, 5)
gen_arrow_contour_xld (ArrowS2, (RowBL+RowBR)/2, (ColBL+ColBR)/2, (RowTL+RowTR)/2, (ColTL+ColTR)/2, 5, 5)
concat_obj (ArrowS1, ArrowS2, ArrowS)
else
*//左右边缘为长边
gen_contour_polygon_xld (ContL1, [RowTL,RowBL], [ColTL,ColBL])
gen_contour_polygon_xld (ContL2, [RowTR,RowBR], [ColTR,ColBR])
concat_obj (ContL1, ContL2, ContS)
gen_arrow_contour_xld (ArrowS1, (RowTL+RowBL)/2, (ColTL+ColBL)/2, (RowTR+RowBR)/2, (ColTR+ColBR)/2, 5, 5)
gen_arrow_contour_xld (ArrowS2, (RowTR+RowBR)/2, (ColTR+ColBR)/2, (RowTL+RowBL)/2, (ColTL+ColBL)/2, 5, 5)
concat_obj (ArrowS1, ArrowS2, ArrowS)
endif
concat_obj (ArrowS, ContS, ContS)
WidthMax:=WidthMax*2
endif
*//可视化
dev_clear_window ()
dev_display (Image)
dev_set_color ('red')
dev_display (ContS)
disp_message (200000, 'MaxWidth: '+WidthMax+' pix', 'window', 10, 10, 'green', 'false')

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UKimiF · 发表于 2025-8-9 16:59:01

其中get_region_ud_edge算子是我自己封装的算子，作用是获得区域的指定方向的所有边缘点，内容如下：

set_system ('clip_region', 'false')
smallest_rectangle1 (Region, Row1, Column1, Row2, Column2)
if(Direction=='Up')
gen_region_line (RegionL, Row2, Column1+1, Row2, Column2-1)
elseif(Direction=='Down')
gen_region_line (RegionL, Row1, Column1+1, Row1, Column2-1)
elseif(Direction=='Left')
gen_region_line (RegionL, Row1+1, Column2, Row2-1, Column2)
elseif(Direction=='Right')
gen_region_line (RegionL, Row1+1, Column1, Row2-1, Column1)
endif
union2 (Region, RegionL, Region)
if(Direction=='Up' or Direction=='Down')
closing_rectangle1 (Region, Region, 1, (Row2-Row1))
else
closing_rectangle1 (Region, Region, (Column2-Column1), 1)
endif
if(Direction=='Up')
move_region (Region, RegionM, 1, 0)
elseif(Direction=='Down')
move_region (Region, RegionM, -1, 0)
elseif(Direction=='Left')
move_region (Region, RegionM, 0, 1)
elseif(Direction=='Right')
move_region (Region, RegionM, 0, -1)
endif
difference (Region, RegionM, Region)
get_region_points (Region, Rows_Res, Cols_Res)
if(Direction=='Up' or Direction=='Down')
tuple_sort_index (Cols_Res, Cols_ResIndices)
tuple_sort (Cols_Res, Cols_Res)
tuple_select (Rows_Res, Cols_ResIndices, Rows_Res)
else
tuple_sort_index (Rows_Res, Rows_ResIndices)
tuple_sort (Rows_Res, Rows_Res)
tuple_select (Cols_Res, Rows_ResIndices, Cols_Res)
endif
if(Direction=='Up')
Rows_Res:=Rows_Res-0.5
elseif(Direction=='Down')
Rows_Res:=Rows_Res+0.5
elseif(Direction=='Left')
Cols_Res:=Cols_Res-0.5
elseif(Direction=='Right')
Cols_Res:=Cols_Res+0.5
endif
return ()

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另外get_rect2_vertex也是我自己封装的算子，作用是获得旋转矩形的四个拐点，内容如下：

gen_rectangle2 (Rectangle, Row, Column, Phi, Length1, Length2)
smallest_rectangle2 (Rectangle, Row, Column, Phi, Length1, Length2)
if(abs(deg(Phi))>45)
Phi:=rad(deg(Phi)-90*(Phi/abs(Phi)))
Tmp:=Length1
Length1:=Length2
Length2:=Tmp
endif
tuple_sin (Phi, Sin)
tuple_cos (Phi, Cos)
*左上角
TopLeft_X := -Length1*Cos - Length2*Sin
TopLeft_Y := -Length1*Sin + Length2*Cos
RowTL := Row - TopLeft_Y
ColTL := Column + TopLeft_X
*右上角
TopRight_X := Length1*Cos - Length2*Sin
TopRight_Y := Length1*Sin + Length2*Cos
RowTR := Row - TopRight_Y
ColTR := Column + TopRight_X
*右下角
LowerRight_X := Length1*Cos + Length2*Sin
LowerRight_Y := Length1*Sin - Length2*Cos
RowBR := Row - LowerRight_Y
ColBR := Column + LowerRight_X
*左下角
LowerLeft_X := -Length1*Cos + Length2*Sin
LowerLeft_Y := -Length1*Sin - Length2*Cos
RowBL := Row - LowerLeft_Y
ColBL := Column + LowerLeft_X
return ()

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luhu326 · 发表于 2025-8-13 15:55:42

大佬牛批

Zcy1023 · 发表于 2025-8-13 16:11:55

感谢分享

hanfang · 发表于 2025-8-18 09:39:23

UKimiF 发表于 2025-8-9 16:59
其中get_region_ud_edge算子是我自己封装的算子，作用是获得区域的指定方向的所有边缘点，内容如下：

另外 ...

感谢大佬的指导

xah · 发表于 2025-9-1 10:57:38

牛牛牛

hangma · 发表于 2025-9-1 15:22:32

端子宽度测量

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