Multiple USB Cameras plugged in, only one found - Image Acquisition Toolbox

Hello,

I have 3 PS3EYE usb cameras plugged in. I am able to grab frames from one of the cameras, but I cannot get the toolbox to find the other two.

I have tried imaqreset and rebooting the computer, but it will not find the other two.

Device manager shows:

How do I get it to see the other two?

Thanks

Greg

Answer 1

[Urmila Rajpurohith]

It seems like the issue is with the identical names of USB cameras connected. You can rename the USB webcams by following below steps.

Here is the instance where I have a test device and USB Video device and I am changing the names and passing them back to the “webcamlist” function so that it’ll assign new names to the usb drivers. Then pass those values to the Image Acquisition Toolbox.

>> webcamlist %gets the device names of web cams connected to the pc

ans = 2×1 cell array

{'USB Video Device'}

{'Webcam Test Device'}

Renaming the 1stdevice

>> webcamlist{1} = 'sony'

webcamlist =

1×1 cell array

{'sony'}

Renaming the 2nddevice

>> webcamlist{2} = 'nikon'

webcamlist =

1×2 cell array

{'sony'} {'nikon'}

Final Camera Devices list will be then:

>> webcamlist %reassigned values

webcamlist =

1×2 cell array

{'sony'} {'nikon'}

Now, since the names are changed, MATLAB will take them as two different variables and won’t override.

[Mert Karakaya]

Dear Urmila,

This does not work. I chaged the names of the identical webcams to 'left' and 'right' following your suggestion but, I keep getting The camera did not return a frame for this resolution. error.