halcon车牌的识别

 read_image (Audi2, 'audi2')
 fill_interlace (Audi2, ImageFilled, 'odd')
 dev_set_color('green')
 threshold (ImageFilled, Region, , )
 connection (Region, ConnectedRegions)
 select_shape (ConnectedRegions, SelectedRegions, 'width', 'and', , )
 select_shape (SelectedRegions, Letters, 'height', 'and', , )
 *dev_clear_window ()
 *dev_set_colored ()
 *dev_display (ImageFilled)
 *dev_display (Letters)

 read_ocr_class_mlp('Industrial_0-9A-Z.omc',OCRHandle)
 do_ocr_multi_class_mlp(Letters,Audi2,OCRHandle, Class, Confidence)

 *显示识别的结果
 area_center(Letters, Area, Row, Column)
 for Index :=  to  by
      disp_message(, Class[Index], 'window', Row[Index], Column[Index], 'black', 'true')
  endfor

初始图片：

处理后的图片，将车牌所在的区域识别出来：

显示输出结果：

*Class[0]--class[6]分别为GAPV329

area_center(Letters, Area, Row, Column) for Index := 0 to 6 by 1      disp_message(3600, Class[Index], 'window', Row[Index], Column[Index], 'black', 'true')  endfor