User`s guide

5
Acquiring Image Data
The core of any image acquisitio n ap p lication i s th e d ata acquired from the
input device. A trigger is th e event that initiates the acq uisition of ima ge
frames, a process called logging. A trigger event occurs when a certain
condition is met. For some types of triggers, the condition can be the execution
of a toolbox function. For other types of triggers, the condition can be a signal
from an external source that is monitored by the image acquisition hardware.
This chapter describes how to configure and use the various triggering
options supported by Image A cquisition Toolbox and control other acquisition
parameters.
Data Loggin g (p. 5-3)
Provides an o vervie w of data logging
and provides a brief description of
all the trigger properties supported
by the video input objec t
Setting the Values of Trigger
Properties (p. 5-6)
Describes how to set the v alues of
video input object trigger properties
Specifying the Trigger Type (p. 5-9)
Describes h ow to specify the valu e of
the
TriggerType property
Controlling Logging Param eters
(p. 5-20)
Describes how you can control
various aspects of data logging using
toolbox functions and video input
object properties
Waiting for an Acqu isition to Finish
(p. 5-31)
Describes how to use the
wait
function to block the command line
until an acquisition completes