Halcon例程分析15：剔除"翼"形毛刺

原創

2020-02-20 18:09

打開halcon，按下ctrl+e打開halcon自帶例程。工業領域->橡膠，人造材料，金屬薄片->fin.hdev

* fin.hdev: Detection of a fin
* 
dev_update_window ('off')
read_image (Fins, 'fin' + [1:3])
get_image_size (Fins, Width, Height)
dev_close_window ()
dev_open_window (0, 0, Width[0], Height[0], 'black', WindowID)
set_display_font (WindowID, 14, 'mono', 'true', 'false')
for I := 1 to 3 by 1
    select_obj (Fins, Fin, I)
    dev_display (Fin)
    *二值化處理，選中“亮”的那部分區域
    binary_threshold (Fin, Background, 'max_separability', 'light', UsedThreshold)
    dev_set_color ('blue')
    dev_set_draw ('margin')
    dev_set_line_width (4)
    dev_display (Background)
    disp_continue_message (WindowID, 'black', 'true')
    stop ()
    *閉運算，爲什麼閉運算能把那個“翼”形去掉，閉運算是先膨脹，後腐蝕。所謂膨脹就是把黑色邊緣部分用白色替換，
    *當這個用作運算的卷積核足夠大，白色就把那個黑色的區域整個覆蓋掉了
    *腐蝕是爲了把原來的邊緣還原
    closing_circle (Background, ClosedBackground, 250)
    dev_set_color ('green')
    dev_display (ClosedBackground)
    disp_continue_message (WindowID, 'black', 'true')
    stop ()
    *比較兩幅圖像，選中兩張圖像中不相同的區域
    difference (ClosedBackground, Background, RegionDifference)
    *開運算
    opening_rectangle1 (RegionDifference, FinRegion, 5, 5)
    dev_display (Fin)
    dev_set_color ('red')
    dev_display (FinRegion)
    *獲取區域中心位置座標
    area_center (FinRegion, FinArea, Row, Column)
    if (I < 3)
        disp_continue_message (WindowID, 'black', 'true')
        stop ()
    endif
endfor

毛刺圖片