Halcon打开图片：单个图片以及遍历读取文件夹里的所有图片

get_image_size (Image, Width, Height)
3、*创建显示窗口，并设置窗口及绘制参数
dev_open_window_fit_size (0, 0, Width, Height, -1, -1, WindowHandle)
*等价于dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)

invert_image (Image, ImageInvert)
dev_close_window()
dev_update_off ()
dev_open_file_dialog ('read_image', 'default', 'default', Selection)
read_image (Image, Selection)
get_image_size (Image, Width, Height)
dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
dev_display (Image)
*彩色转灰度图
count_channels (Image, Channels)
if (Channels == 3)    
    *将图像进行通道分解，分别转换为三个通道的RGB图像
    decompose3 (Image, Red, Green, Blue)   
    rgb1_to_gray (Image, Image1)
    *真彩色转灰度图
elseif (Channels == 4)
    decompose4 (Image, Red, Green, Blue, Alpha)
    compose3 (Red, Green, Blue, MultiChannelImage)
    rgb1_to_gray (MultiChannelImage, Image1)
else
    Image1 := Image
endif
*取RGB的最小值通道
min_image (Red, Green, ImageMin)
min_image (ImageMin, Blue, ImageMin)
*使用颜色转换将RGB三个通道图像转化为HSV通道的图像
trans_from_rgb (Red, Green, Blue, Hue1, Saturation1, Intensity1, 'hsi')
trans_from_rgb (Red, Green, Blue, Hue2, Saturation2, Value2, 'hsv')
*灰度取反
invert_image (Image1, ImageInvert)
*二值化
*最大类间方差法(otsu)
binary_threshold (Image1, BrightRegion, 'max_separability', 'dark', UsedThreshold)
region_to_bin (BrightRegion, BinImage, 0, 255, Width, Height)

dev_close_window ()
list_files ('D:/hellowprld/pic', ['files','follow_links','recursive'], ImageFiles)
tuple_regexp_select (ImageFiles, ['\\.(tif|tiff|gif|bmp|jpg|jpeg|jp2|png|pcx|pgm|ppm|pbm|xwd|ima|hobj)$','ignore_case'], ImageFiles)
for Index := 0 to |ImageFiles| - 1 by 1
    read_image (Image, ImageFiles[Index])
    dev_close_window ()
    get_image_size (Image, Width, Height)
    *dev_open_window (0, 0, Width, Height, 'black', WindowHandle)
    dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
    dev_display (Image)
    gen_rectangle1 (Rectangle, 482.313, 458.083, 847.963, 1001.78)
    reduce_domain (Image, Rectangle, ImageReduced)
    crop_domain (ImageReduced, ImagePart)
    mean_image (ImagePart, ImageMean, 20, 20)
    auto_threshold (ImageMean, Regions, 2)
    connection (Regions, ConnectedRegions)
    select_shape_std (ConnectedRegions, SelectedRegions, 'max_area', 70)
    area_center (SelectedRegions, Area, Row, Column)
    dev_clear_window ()
    dev_display (ImagePart)
    dev_display (Image)
    if (Area < 100000)
        disp_message (WindowHandle, 'good', 'window', Row, Column, 'black', 'true')
    else
        disp_message (WindowHandle, 'bad', 'window', Row, Column, 'black', 'true')    
    endif
    stop ()
endfor

dev_close_window()
dev_open_window(0, 0, 512, 512, 'black', WindowHandle)
for i:=1 to 7 by 1
    read_image (Image, 'image/蚕丝检测' + i + '.bmp')
endfor
* Main loop: process different images
for Index1 := 1 to 7 by 1
    read_image (Image, 'image/saw_blade/saw_'+Index1$'02')
endfor

read_image (Image1, 'D:/match/AOI/基于halcon的AOI自动光学检测1.bmp')
get_image_size (Image1, Width, Height)
dev_open_window_fit_image (Image1, 0, 0, -1, -1, WindowHandle)
dev_display (Image1)
*画十字线
set_display_font (WindowHandle, 25, 'mono', 'true', 'false')
dev_set_line_width(2)
dev_set_color('green')
gen_rectangle1 (Rectangle0, Height/2, 0, Height/2, Width) //横线
dev_display(Rectangle0)
gen_rectangle1 (Rectangle1, 0, Width/2, Height, Width/2) //竖线
dev_display(Rectangle1)