Hello all, Just a question about the Cvb::DeviceFactory::Open() function. I have a area scan and a line scan camera. I am trying to open the area scan camera as Vin Acquisition and the line scan camera as GenTL Acquisition. When, I open the camera individually one after the other using CVB++, I do …

@keerthitheja Please dedicate a specific port for each camera and try again: Camera1 → port 0 Camera2 → Port 1 The following screenshot demonstrates how to do that in code and in .ini setting for VinDriver: [Settings]

I am not sure on how porthandling in the GenTL is realized (if at all) BUT: At least for the vin acquisition you either need to have “AutoSwitchEnabled” set to true in the .ini or take care, that you assign a specific port to the device you want to load. Usually if not given any port, Port0 will b…

hi @Chris , I am currently looking for the area scan and line scan camera’s based on their MAC Address from the discovery information and then I am opening the devices based on their discovery tokens. [image] Chris: If you try to load the linescanner first, what is the result then? If I try …

This underlines my suspicion, that the vin is loaded on Port0 thus blocking it for other devices even if loaded over the GenTL. Just pass ‘1’ as port in the Open() function when loading the vin device and everything should be fine.

@Chris STOP! :kissing_smiling_eyes: The GenTL Stack does not use the Genicam.ini. This means there is no need for “Porthandling” in anyway. Hi @keerthitheja The a discovery token (i.e. Cvb::DiscoveryInformation::AccessToken()) defines a connection from interface to device. So opening 2 cameras …

BUT using one of the devices as “Vin Acquisition” should fall back to the ini or am I wrong? At least this should fall back to loading the driver and blocking Port 0?! Obviously this problem does not happen if both devices are changed to GenTL thats why I suspected the port handling to be the prob…

Hi @c.hartmann Thank you for the reply. [image] c.hartmann: So … what to do: Simple. (This will also make your application “U3V” ready). Start your discovery. Open all cams in serially. Then start your 2 image acquisition threads and pass the Cvb::DevicePtr to these threads. This is exac…

Thanks, that helps but still… using IGrab2 / Cvb::AcquisitionStack::Vin - without Cvb::DeviceFactory::Discover - Yes, the .ini is used. IGrab2 / Cvb::AcquisitionStack::Vin - with Cvb::DeviceFactory::Discover - No, the .ini is not used. Only implies, that the ini is not always used (thus my “AutoS…

This is the wrong place to discuss this, but this application is about the GenTL Stack. And if Discovery is used, the whole “Port” concept disappears. And IGrab3/GenTL Stack never had a concept of “Port”.

Is Opening multiple cameras together thread safe?

Programming Questions

c.hartmann July 1, 2022, 7:52am 9

Made a little FAQ about this.

https://forum.commonvisionblox.com/t/which-acquisition-stack-uses-the-configuration-by-genicambrowser-i-e-genicam-ini/1740

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Is Opening multiple cameras together thread safe?

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