combining analogue video signals

[PeterFoerster]

Hi,

I'd like to do the following: Record a 4 analogue video signals simultaneously via a PCI frame grabber card like the PXC200AF fromimagenation. Then I'd like to combine the four videos into one, so the videos are displayed next to each other and I can save them in one video file.

I also need to integrate Text into the video to display information about what's going on at a given moment.

Can I do all this with LabVIEW? I'm completely new to video processing with LabVIEW, so I don't really know about the posibilities.

Any help is greatly appreciated.

[Christian Mergl]

Hi,

Are you using the NI Vision Development Module?

If so, you could use "IMAQ Image to Image 2.vi" to copy a small Image into a largeer one.

Christian

[PeterFoerster]

Thanks for the answer.

I do have the IMAQ Image to Image 2.vi.

The Question is: At what rate does that VI work?

The Way I understand this that VI processes single images only. So if I want to process, say, 24 fps, I'd have to execute the vi 3x24=72 times a second. Is that possible?

I don't know the exact specs of the cameras, but since they're analogue I reckon that the images won't be exactly 1080p.

[Christian Mergl]

This is depends at the actual size of the image and mostly at your system's performance. You will have to test it.

With four 1024x768 U8 images it takes about 1 ms at my Windows System (32bit, Intel i5, 3.34GB), LV 2010 SP1.

Christian

[PeterFoerster]

I've played around a bit with the VIs. (Except the one you mentioned, as I do not yet have a license for it) Apparently the Video processing in LabVIEW is sufficiently fast... The Computer my Program will run on in the end is a 64-bit, 4GB i5 "Sandy Bridge" system, so I don't suppose I'll run into any hardware problems there. I'll see when- hopefully tomorrow- my Computer arrives.