MATLAB: Am I getting warnings when starting Coriander on Debian 6

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I am using Coriander to preview and control my DCAM compatible camera. When I start the application I am getting the following warning on Debian 6:

Warning: could not find a Digital Camera on the bus.

Best Answer

You should ensure that you as the user are part of the video group on the Linux system you are on. System Administrators will be able to add you to the video group.

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MATLAB: Is the DCAM (IEEE-1394) FireWire camera not recognized by the Image Acquisition Toolbox

The Image Acquisition Toolbox supports connections to IEEE-1394 (FireWire) DCAM-compliant devices using the Carnegie Mellon University (CMU) DCAM driver. If the toolbox does not recognize a DCAM camera connected to your computer, most likely the camera has not been configured to use the CMU DCAM driver.

The supported version of the driver is shipped with MATLAB and can be located in the following directory:

$MATLABROOT\toolbox\imaq\imaqextern\drivers\win32\dcam

(where $MATLABROOT is the MATLAB root directory on your machine, as returned by typing

matlabroot

at the MATLAB Command Prompt.)

Be sure to install the CMU DCAM demo application when you install the CMU DCAM driver. To verify your FireWire camera has been successfully configured to use the CMU DCAM driver, try accessing your camera from the CMU demo application. If the CMU demo application can access your DCAM camera, it has been successfully configured and can be used by the toolbox.

For information on configuring your camera to use the CMU DCAM driver, refer to the Troubleshooting section of the Image Acquisition Toolbox documentation:

Troubleshooting (Image Acquisition Toolbox)

http://www.mathworks.com/help/imaq/troubleshooting-1.html

Note the CMU driver strictly adheres to the DCAM specification. The toolbox does not support vendor specific DCAM drivers which frequently offer extensions or modifications to the DCAM specification.

MATLAB: Do I receive an error from the Image Acquisition Toolbox when using an IEEE-1394 camera

This is an error from the operating system describing a problem with the IEEE-1394 bus. Normally it means that there is not enough bandwidth available on the IEEE-1394 bus to support the video format and frame rate requested. There are several possible workarounds:

1. Reboot the computer. This is often a transient problem that can be solved by a reboot.

2. Make sure that no other devices are using the IEEE-1394 bus.

3. Reduce the video resolution by specifying a different video format or reduce the requested frame rate.

To learn more about the VideoFormat property type

web([docroot,'/toolbox/imaq/videoformat.html'])

at the MATLAB command prompt.

To learn more about the FramesPerTrigger property, execute:

web([docroot,'/toolbox/imaq/framespertrigger.html'])

at the MATLAB command prompt.

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Related Solutions

MATLAB: Is the DCAM (IEEE-1394) FireWire camera not recognized by the Image Acquisition Toolbox

MATLAB: Do I receive an error from the Image Acquisition Toolbox when using an IEEE-1394 camera

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