User`s guide

5 Acqu iring Image Data

your image acquisition device and substitute that syntax for the following

code.

vid = videoinput('win video',1);

Ve rify that the o bject has not acquired any frames.

get(vid,'FramesAcquired')

ans =

2 Configure properties — S et the video input objec t’s TriggerType

property to 'Ma nua l'. To set the values of certain trigger properties,

including the

TriggerType property, you must use the triggercon fig

function. S e e “Setting the Values of Trigger Propertie s” on page 5-6 for

more information.

triggerconfig(vid, 'Manual')

ThisexamplealsosetsthevalueoftheFramesPerTrigge r property to 5.

(The default is 10 frames per trigger.)

set(vid,'FramesPerTrigger',5)

3 Start the image acquisition object —Callthestart function to start

the image acquisition object.

start(vid);

The video object is now running but not logging. With manual triggers, the

video stream begins when the object starts but no frames are acquired

until the trigger executes.

isrunning(vid)

ans =

islogging(vid)

ans =

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