User`s guide

18 Properties — Alphabetical List
18-4
DeviceID
Identify image acquisition device represented by video input object
Description
The DeviceID property identifies the device represented by the video input object.
A device ID is a number, assigned by an adaptor, that uniquely identifies an image
acquisition device. The adaptor assigns the first device it detects the identifier 1, the
second device it detects the identifier 2, and so on.
You must specify the device ID as an argument to the videoinput function when you
create a video input object. The object stores the value in the DeviceID property and
also uses the value when constructing the default value of the Name property.
To get a list of the IDs of the devices connected to your system, use the imaqhwinfo
function, specifying the name of a particular adaptor as an argument.
Characteristics
Access Read only
Data type double
Values Any nonnegative integer
Examples
Use the imaqhwinfo function to determine which adaptors are connected to devices on
your system.
imaqhwinfo
ans =
InstalledAdaptors: {'matrox' 'winvideo'}
MATLABVersion: '7.4 (R2007a)'