User`s guide

Creating Image Acquisition Objects
default videoinput syntax in the ObjectConstructor field of the d e vi ce
information structure.
vid = videoinput('mat rox');
This syntax uses the default video f ormat l isted in the DefaultFormat field of
the data returned by
imaqhwinfo. You can optionally s pecify the video format.
See “Specifying the Video Format” on page 4-12 for more information.
V iewing a Summary of a Video Input Object
To view a summary of the characteristics of the video input object you created,
enter the variable name you assigned to the object at the command prompt.
For example, this is the summary for the object
vid.
vid
The items in this li
st correspond to the numbered elements in the object
summary:
1 Thetitleofthesum
maryincludesthenameoftheimageacquisitiondevice
this object repres
ents. In the example, this is a Matrox Orion frame grabber.
2 The Acquisition Source section lists the name of all the video source
objects associated with this video input object. For many objects, this list
might only contain one video s ource object. In the example, the Matrox
device supports eight physical input channels and, with the default video
4-11