少有人走的路（一） 字典
这个可以和C#中的Dictionary类比，它是由key来访问存储的元素。
和C#的字典区别只是，halcon中的这个字典只接收Htuple, 和Object两种类型。
下面的程序演示了写入与读取Htuple, Object类型的数据。
create_dict(DictHandle) read_image(Image, 'printer_chip/printer_chip_01') set_dict_object(Image, DictHandle, 'img1') set_dict_tuple(DictHandle,'windows' , 1024) set_dict_tuple(DictHandle,'linux' , 'false') set_dict_tuple(DictHandle,'os2' , 'this is a test') get_dict_tuple(DictHandle,'windows', t1) get_dict_tuple(DictHandle,'linux', t2) get_dict_tuple(DictHandle,'os2', t3) get_dict_object(Object, DictHandle, 'img1')
（二）字符串数组赋值
下面的代码类似于：
msg:=''
msg[0]:='lxy1'
msg[1]:='lxy2'
dev_close_window()
dev_open_window(0, 0, 512, 512, 'black', WindowHandle)
txt:='this is '
txt[|txt|]:='windows,'
txt[|txt|]:='linux'
dev_set_color('red')
dev_disp_text(txt, 'window', 'top', 'left', 'black', [], [])
（三）多张图片平铺显示
PillBagPath1 := 'pill_bag/pill_bag_001' PillBagPath2 := 'pill_bag/pill_bag_002' read_image (Image, [PillBagPath1,PillBagPath2]) tile_images (Image, TiledImage, 2, 'horizontal')
(四）图像区域叠加与绘制
overpaint_gray ( ImageDestination, ImageSource : : : )
将灰度值不相同区域用不同颜色绘制到ImageDestination中， ImageSource包含希望的灰度值图像
overpaint_region ( Image, Region : : Grayval, Type : )
将Region以一个恒定的灰度值绘制到Image图像中
paint_gray ( ImageSource, ImageDestination : MixedImage : : )
将ImageSource的图像绘制到ImageDestination中，形成MixedImage。
paint_region ( Region, Image : ImageResult : Grayval, Type : )
将Region以一个恒定的灰度值绘制到Image图像中
paint_xld ( XLD, Image : ImageResult : Grayval : )
将XLD以一个恒定的灰度值绘制到Image图像中
set_grayval ( Image : : Row, Column, Grayval : )
设置Image图像中坐标为（Row，Column）的灰度值
read_image (Image, 'G:/Halcon/images/images/claudia.png') gen_circle (Circle, 200, 200, 100.5) reduce_domain (Image, Circle, ImageReduced) gen_image_proto (Image, ImageCleared, 32) overpaint_gray (ImageCleared, ImageReduced) gen_image_const (Image1, 'byte', 512, 512) overpaint_region (Image1, Circle, 255, 'fill') * /* Copy a circular part of the image into the image : */ read_image (Image2, 'G:/Halcon/images/images/brycecanyon1.png') paint_gray (ImageReduced, Image2, MixedImage) * /* Paint a rectangle into the image */ read_image (Image3, 'G:/Halcon/images/images/pads.png') gen_rectangle1 (Rectangle1, 30, 20, 100, 200) paint_region (Rectangle1, Image3, ImageResult, 255, 'fill') * /* Paint colored xld objects into a gray image */ * /* read and copy image to generate a three channel image */ copy_image (Image2, image0) copy_image (Image2, image1) compose3 (image0, Image2, image1, MultiChannelImage) * /* extract subpixel border */ threshold_sub_pix (MultiChannelImage, Border, 128) * /* select the circle and the arrows */ circle := Border[14] arrow := Border[16] ObjectsConcat := [circle,arrow] * /* paint a green circle and white arrows (to paint all * * objects e.g. blue, pass [0,0,255] tuple for GrayVal) */ paint_xld (ObjectsConcat, MultiChannelImage, ImageResult1, [0,1,0,1,1,255])
未完待续。。。。。
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作者：hackpig
来源：www.skcircle.com
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