halcon学习笔记——实例篇（1）车牌识别

实例一：车牌识别

素材图片：

halcon代码：

read_image(Image,'D:/MyFile/halcon/车牌识别/图片.jpg')
decompose3(Image,ImageR,ImageG,ImageB)
trans_from_rgb(ImageR,ImageG,ImageB,ImageResult1, ImageResult2, ImageResult3, 'hsv')

threshold (ImageResult3, Regions, 135, 255)
connection (Regions, Connection)
select_shape (Connection, SelectedRegions, ['area','width','height','roundness'], 'and', [127.38,11.89,24.9602,0.4808], [168.73,14.077,26.0097,0.54074])
connection(SelectedRegions, ConnectedRegions)
sort_region(ConnectedRegions,SortRegions,'upper_left','true','column')

read_ocr_class_mlp('Industrial_0-9A-Z.omc',OCRHandle)
do_ocr_multi_class_mlp(SortRegions,ImageResult2,OCRHandle, Class, Confidence)

*显示识别的结果
area_center(SortRegions, Area, Row, Column)
for Index := 0 to 5 by 1
    disp_message(3600, Class[Index], 'window', Row[Index], Column[Index], 'black', 'true')
endfor