Hi All,
I'm speeding up an existing machine vision + motion control system and and I'm looking for suggestions on camera selection.
I want to take pictures of features on the target as it flys by by using a triggable camera that has a shutter speed fast enough to minimize smearing. 640x480 monochrome is good enough quality. I have a large investment in analog boards, so I'd like to keep this interface. The frame rate would be about 10 f/s.
I know approximately when a feature in interest is going by, so I can use the trigger to snap the picture and then use machine vision to see where it actually is and generate a corrected map (the whole purpose of the exercise). The trigger delay time must, of course, be very constant. Based on the speed of travel and the tolerance for smearing, an exposure time of 1/1000 sec or less s needed.
The camera is viewing the target through a microscope of pretty high mag and the light must be defuse, all of which limits the light available.
I'm currently doing tests using a JAI CV-S3200N. With this camera, and a 1/125 exposure time, I get a marginally OK image. The specs claim a sensitivity of 0.09 LUX for this camera.
Any suggestions for a better camera for this task? I looked in the NI camera reference but didn't see any data on sensitivity or triggering.
Regards,
SteveD
