find_pads.hdev

dev_update_pc ('off') dev_update_window ('off') dev_update_var ('off') read_image (Image, 'die_pads') dev_close_window () get_image_size (Image, Width, Height) dev_open_window (0, 0, Width * 2, Height * 2, 'black', WindowHandle) dev_set_part (0, 0, Height - 1, Width - 1) * Find the pads in the image using blob analysis. *快速阈值分割 fast_threshold (Image, Region, 180, 255, 20) *分割连通域 connection (Region, ConnectedRegions) *使用面积和长短轴比值筛选区域 select_shape (ConnectedRegions, SelectedRegions, ['area','anisometry'], 'and', [200,1], [1200,2]) * Construct a ROI for subpixel-accurate edge detection. *内部孔洞填充 fill_up (SelectedRegions, RegionFillUp) *用“convex”凸包性变换区域的形状 shape_trans (RegionFillUp, RegionTrans, 'convex') *将区域缩小到这个边界 boundary (RegionTrans, RegionBorder, 'inner') *利用圆形元素进行膨胀 dilation_circle (RegionBorder, RegionDilation, 2.5) *连通各个区域 union1 (RegionDilation, RegionUnion) * Perform the subpixel-accurate edge detection. *分离区域，减小图片定义域 reduce_domain (Image, RegionUnion, ImageReduced) *用来求取边界 edges_sub_pix (ImageReduced, Edges, 'sobel_fast', 0.5, 20, 40) * Select the edge fragments that belong to the pads. *使用长度特征筛选边界 select_shape_xld (Edges, SelectedContours, 'contlength', 'and', 10, 200) * Merge adjacent edge fragments to obtain one contour per pad. *计算端点靠近的轮廓的并集 union_adjacent_contours_xld (SelectedContours, UnionContours, 2, 1, 'attr_keep') * Fit rectangles robustly to the pads' edges. *利用可旋转的矩形拟合轮廓 fit_rectangle2_contour_xld (UnionContours, 'tukey', -1, 0, 0, 3, 2, Row, Column, Phi, Length1, Length2, PointOrder) * Generate rectangles from the fitting result for visualization purposes. *创建矩形轮廓 gen_rectangle2_contour_xld (Rectangle, Row, Column, Phi, Length1, Length2) dev_display (Image) dev_set_colored (12) dev_display (Rectangle)