Halcon's solution to the problem that the camera cannot be opened after successfully connecting
Recently, I was doing single-camera calibration. For some unknown reason, whether I used the calibration assistant in halcon or the image acquisition assistant, the camera could not be turned on after the camera was successfully connected.
After connecting the camera to the computer, open the image acquisition assistant in halcon, click on the automatic detection interface, it will appear halcon's own detection interface GigEVision (as shown in the picture) and
then click the connection in the connection tab, after the successful connection is displayed, click Collect, the program will be stuck immediately.
After consulting the information, the problem was solved, and the solution is summarized as follows:
( 1 ) Since I am using a Hikvision camera, I installed its client MVS. Find C:\Program Files (x86)\MVS\Development\ThirdPartyPlatformAdapter\HalconHDevelop\Halcon12\win32\hAcqMVision.dll 
under the installation path (here you need to choose according to the version of halcon you installed, I installed version 12 of 32 Halcon)
( 2 ) Copy hAcqMVision.dll to the installation directory of halcon, as shown in the figure:
( 3 ) After completing the above operations, open the image acquisition assistant of halcon, click the automatic detection interface, and the Hikvision camera will appear The interface of MVision, as shown in the figure:
If MVision does not appear after clicking the automatic detection interface, click the drop-down list on the right to find it.