National Instruments IEEE 1394 Manual de usuario descargar pdf (Pagina 23)

Chapter 2 Basic Acquisition with NI-IMAQ for IEEE 1394 Cameras

NI-IMAQ for IEEE 1394 Cameras User Manual 2-12 ni.com

Snap

The low-level snap examples set up a one-shot, single-image acquisition

and start the acquisition. The program acquires an image and processes it.

Finally, the program stops the acquisition, unconfigures the acquisition,

and closes the session.

Figure 2-5 illustrates the programming order of a low-level snap

acquisition.

Figure 2-5. Low-Level Snap Flowchart

Opens and Configures Camera

Starts Transferring Data from Camera

to Host Computer

Executes User-Specific Image

Processing

Stops Transferring Data from Camera

to Host Computer

Configures a Single-Shot, Single-

Buffer Acquisition

Closes the Camera Session

Frees IEEE 1394 Bandwidth and Memory

Resources Used by the Acquisition

Copies and Decodes Buffer

Number 0

Initialize

Configure

Start

Acquire

User-Specific Functions

Stop

Clear

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National Instruments IEEE 1394 Manual de usuario Pagina 23