Report Suggestions for multiple (cheap) Ethernet cameras in Machine Vision and Imaging Posted May 23, 2008 QUOTE (Neville D @ May 21 2008, 12:58 PM) The overhead is required for the packets to be received via TCP-IP and organized together to form the image, so I would guess it doesn't matter how many cameras you have attached, but depends how fast the images are coming through (frame rate).Since your system will be fairly static, you can also boost the performance by defining a ROI (region of interest) so that the camera only sends the pixels in the ROI. This limits the amount of data transfer, the size of LV Vision buffers used and improves overall speed and system response. Neville. Another thing you can do to improve performance in a GigE Vision application is to make sure you're using an Intel Pro 1000 NIC. The NI Vision Acquisition driver has two modes, normal and high performance. The normal driver runs on all other NICs, but when you have an Intel Pro 1000 based NIC, the NI IMAQ driver automatically detects this and will grab the incoming packets before they go through all of the overhead provided by the windows network driver. This can drastically reduce the processing time required to build up the images from GigE cameras. Hope this helps some! http://zone.ni.com/devzone/cda/tut/p/id/5750 -Matt
Suggestions for multiple (cheap) Ethernet cameras
in Machine Vision and Imaging
Posted
QUOTE (Neville D @ May 21 2008, 12:58 PM)
Another thing you can do to improve performance in a GigE Vision application is to make sure you're using an Intel Pro 1000 NIC. The NI Vision Acquisition driver has two modes, normal and high performance. The normal driver runs on all other NICs, but when you have an Intel Pro 1000 based NIC, the NI IMAQ driver automatically detects this and will grab the incoming packets before they go through all of the overhead provided by the windows network driver. This can drastically reduce the processing time required to build up the images from GigE cameras.
Hope this helps some!
http://zone.ni.com/devzone/cda/tut/p/id/5750
-Matt