High speed acquisition vision

[Eneas]

I have a camera that allows me to acquire 40 kfps and NI-PCI-1433, but I only get 20 kfps, with the HL Grab.vi, I have to acquire continuously for 60 seconds and save the data in a file. Anyone know how to optimize the vi to be able to have the 40kfps ?, thanks

[DCarreon]

Hello Eneas,

Instead of using the HL Grab.vi you could use the Low-Level Grab.vi, which separates some of the functions and lets you customize more the VI. 

Another thing you could try is changing the number of taps that you are using, so you can make the processing faster. Here is a link with the user manual of the PCI 1433 so you can read more about it.

http://www.ni.com/pdf/manuals/374001b.pdf

Hope this helps.

Regards.

[nclark]

Do you have NI MAX? See if you can change the fps there. If not, could you post the make and model of the camera?

[Eneas]

with HL grab.vi i can determinate the frame rate but never obtaing the 40 kfps.
when i used the LL grab.vi i dont know how determinate the frame rate. in the manual dont say how save image in the NI PCI 1433 buffer, I don have more information about the camera. the sistem ismade Wasacht Photonics

Can you oriente me how i can resolve this problem?

[MarcDub]

Having no idea about the details of your implementation, I will just throw one possible solution. At those acquisition rates, the integration time of the camera starts to be pretty short. Actually, if the integration time is longer than the acquisition rate period, it might affect the overall acquisition rate. Something to look at...

[nclark]

Hey. I know this seems kind of like a silly question, but have you read through the IMAQ user manual (linked below)? If you're going to use low level grab acquisition, then you must have a tight understanding of the API.

http://home.hit.no/~hansha/documents/lab/Lab%20Equipment/Vision%20System/resources/NI-IMAQdx%20User%...