User`s guide

Basic Image Acquisition Procedure
Step 2: Retrieve Hardware Information
In this step, you get seve ral pieces of information that the toolbox needs to
uniquely identify the image acquisition device you want to access. You use
this information when you create an im age acquisition object, described in
“Step 3: Create a Video Input Object” on page 1-9.
The foll owing table l ists this information. You use the
imaqhwinfo function
to retrieve each item.
Device
Information Description
Adaptor name An adaptor is the software that the toolbox uses to
communicate w ith an image acquisition device via its
device driver. The toolbox includes adaptors for certain
vendors of image acquisition equipment and for particular
classes of image acquisition devices. See “Determining the
Adaptor Name” on page 1-8 for more information.
Device ID
The device ID is a number that the adaptor assigns to
unique ly identify each imag e acquisition device with which
it can communicate. See “D etermining the Device ID” on
page 1-8 for more information.
Note SpecifyingthedeviceIDisoptional;thetoolbox
uses the first available device ID as the default.
Video format
The video format specifies the image resolution (width
and height) and other aspects of the video stream. Image
acquisition devices typically support m ultiple video
formats. See “Determining the Supported Video Formats”
on page 1-9 for more informatio n.
Note Specifying the vid eo form a t is optional; the toolbox
uses one of the supported formats as the default.
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