User`s guide

6 Acquiring Image Data

6-10

Immediate Trigger

The following example illustrates how to use an immediate trigger:

Create an image acquisition object — This example creates a video input object

for a Matrox image acquisition device. To run this example on your system, use the

imaqhwinfo function to get the object constructor for your image acquisition device

and substitute that syntax for the following code.

vid = videoinput('matrox',1);

Verify that the object has not acquired any frames.

vid.FramesAcquired

ans =

Configure properties — To use an immediate trigger, you do not have to configure

the TriggerType property because 'immediate' is the default trigger type. You

can verify this by using the triggerconfig function to view the current trigger

configuration or by viewing the video input object's properties.

triggerconfig(vid)

ans =