User`s guide

Source
Purpose Indicate video source objects associated with vide o input object
Description The Source property is a vector of video source objects that represent
the physical data sou rces connected to a device. When a video input
object is created, the toolbox creates a vecto r of video source objects
associated with the video input object.
Each video source object created is provided a unique source name. You
can use the source name to select the desired acquisition source by
configuring the
SelectedSourceName property of the video input object.
A video source object’s name is stored in its
SourceName property. If a
video source object’s
SourceName is equivalent to th e video input object’s
SelectedSourceName, the video source object’s Selected property has
avalueof
'on'.
The video source object supports a set of common properties, such as
SourceName. Each video source object can als o support device-specific
properties that control characteristics of the physical device such as
brightness, hue, and saturation. Different image acquisition devices
expose different sets of properties.
A video source is defined to be a collection of one or m ore physical data
sources that are treated as a single entity. For example, hardware
supporting multiple RGB sources, each of which is made up of three
physical connections (red-green-blue), is treated as a single video source
object.
The
Source property encapsulates one or more video sources. To
reference a video source, y ou use a numerical integer to index into the
vector of video source objects.
Characteristics
Access Read only
Data type
Vector of video source objects
Values Defined at ob ject creation time
14-36