目录

获取边缘轮廓将轮廓拟合为直线将直线生成新有清晰角的三角形

获取边缘轮廓

read_image (Image1234, 'F:/Desktop/1234.png') //获取亚像素边缘 edges_sub_pix (Image1234, Edges, 'canny', 1, 20, 40) //筛选出需要的轮廓 select_contours_xld (Edges, SelectedContours, 'contour_length', 600,1200, -0.5, 0.5) //将轮廓用直线和圆分割为片段 segment_contours_xld (SelectedContours, ContoursSplit, 'lines_circles', 10, 9, 2) //将差别大的轮廓筛选掉 select_contours_xld (ContoursSplit, SelectedContours1, 'contour_length', 20, 600, -0.5, 0.5) //将边缘拟合为直线，Begain和End代表拟合后直线的起点和终点坐标 fit_line_contour_xld (SelectedContours1, 'tukey', -1, 0, 5, 2, RowBegin1, ColBegin1, RowEnd1, ColEnd1, Nr, Nc, Dist)

将轮廓拟合为直线

上步获取到三边的的参数Begain与End点的信息 这步使用一次函数的方法获得直线的延长线 一次函数为：y = kx+b 已知直线的Begain与End点的信息 r:= RowBegin - RowEnd n:= ColBegin- ColEnd k:= r/n 由此得出直线的斜率k b:=RowBegin - kColBegin 获得直线的位移b 最后获取直线的延长线 横坐标开始点设置为接近0点的5，终点设置为大于图像范围的值2500（视情况选择） row1:=k5+b row2:=k2500+b disp_line (3600, row1,5 , row2, 2500)

r:= RowBegin1[0] - RowEnd1[0] n:= ColBegin1[0] - ColEnd1[0] //由起始点与终点生成直线 disp_line (3600, 0,ColEnd1[0] , 100, ColEnd1[0]) r:= RowBegin1[1] - RowEnd1[1] n:= ColBegin1[1] - ColEnd1[1] k1:= r/n b1:=RowBegin1[1] - k1*ColBegin1[1] row2:=k1*5+b1 row22:=k1*2500+b1 disp_line (3600, row2,5 , row22, 2500) r:= RowBegin1[2] - RowEnd1[2] n:= ColBegin1[2] - ColEnd1[2] k1:= r/n b1:=RowBegin1[2] - k1*ColBegin1[2] row3:=k1*5+b1 row32:=k1*2500+b1 disp_line (3600, row3,5 , row32, 2500)

将直线生成新有清晰角的三角形

//直线与直线的交点获取到三角形的三个角点 intersection_lines (0,ColEnd1[0] , 100, ColEnd1[0], row2,5 , row22, 2500, RowA, ColumnA, IsOverlapping) intersection_lines (0,ColEnd1[0] , 100, ColEnd1[0], row3,5 , row32, 2500, RowB, ColumnB, IsOverlapping) intersection_lines (row2,5 , row22, 2500, row3,5 , row32, 2500, RowC, ColumnC, IsOverlapping) //使用三角形三个角点闭合轮廓 Rows:=[RowA,RowB,RowC,RowA] Cols:=[ColumnA,ColumnB,ColumnC, ColumnA] //生成闭合轮廓 gen_contour_polygon_xld (Contour, Rows, Cols)