Chapter2 SoftwareOverview
NI-IMAQfor IEEE-1394 Cameras User Manual 2-2 ni.com
High-Level Functions
Usehigh-level functions to quickly and easily capture images. If you need
more advanced functionality, you can mix high-level functions with
low-level functions.

Snap Functions

Snapfunctions capture all or a portion of a singl e frameor fieldto the user
buffer.
imaq1394SnapImage Performs a single frame
acquisition in an image buffer,
which is allocated using IMAQ
Visionmemory management.
imaq1394Snap Performs a single frame
acquisition in a memory buffer,
which is allocated without using
IMAQVision memory
management.

Grab Functions

Grabfun ctions start a continuous image acquisition to a user buffer. Any
frame orf ield can becopied from the grab b ufferto another user buffer.
imaq1394SetupGrab Configuresand starts a continuous
acquisition.
imaq1394GrabImage Acquiresthe most current fram e
into the specifiedIMAQ Vision
image buffer.Call this function
only after calling
imaq1394SetupGrab.
imaq1394Grab Acquiresth em ost current frame
into a previouslyallocated buffer.
Callthis function only after calling
imaq1394SetupGrab.