使用halcon帮助basler摄像头快速对焦

gen_rectangle1 (ROI_0, 627.25, 1404.85, 854.05, 1627.6)
* Image Acquisition 01: Code generated by Image Acquisition 01
open_framegrabber ('GigEVision', 0, 0, 0, 0, 0, 0, 'default', -1, 'default', -1, 'false', 'default', '0030531a4e5e_Basler_acA250014gm', 0, -1, AcqHandle)
grab_image_start (AcqHandle, -1)
while(true)
   grab_image_async (Image, AcqHandle, -1)
   reduce_domain(Image, ROI_0, ImageReduced)
   sobel_amp(ImageReduced, EdgeAmplitude, 'sum_abs', 3)
   intensity(ROI_0, EdgeAmplitude, Mean, Deviation)
   disp_text_button(3600, Mean, 'window', 200, 200, 'black', 'gray')
endwhile


* Image Acquisition 01: Do something
close_framegrabber (AcqHandle)
write_image (Image, 'bmp', 0, 'D:/Halcon/model4.bmp')

halcon连接上basler相机后，调节相机焦距，在屏幕上看见显示的辨析力最强时，这时就是相机拍摄最清晰的