Displaying Images with NI-IMAQ and the LabVIEW Real-Time Module

NI-IMAQ and the LabVIEW Real-Time Module give you two options for displaying images—Remote Display and RT Video Out. Choose the display option that best fits the needs of the application.

Remote Display

Remote Display is available in LabVIEW 7.0 or later. Use Remote Display during development and debugging to view the LabVIEW front panel Image Display control from the host machine. Use RT Video Out to display images on a monitor connected to the remote LabVIEW Real-Time Module system.

When you use Remote Display, the real-time target machine must transfer the image back to host machine across the network. Use the IMAQ Remote Compression VI, located on the Vision Utilities»IMAQ RT palette, to minimize network bandwidth consumed for remote display.

RT Video Out

RT Video Out allows you to display images on a monitor that is connected to the PXI controller. To access this feature, use the IMAQ RT Video Out VI from the Vision Utilities»IMAQ RT palette.

Note  This feature is available only on PXI controllers that feature the i815 chipset or the i845 chipset, such as the National Instruments PXI-8175/76 Series controllers or the PXI-8184/85/86 Series controllers.

To programmatically configure the system to use IMAQ RT Video Out to display system images, use the IMAQ Video Out Display Mode VI. This VI allows you to set parameters for screen area, color depth, and refresh frequency.

Tip  Refer to the HL Grab to Real-Time Target with Display example for a demonstration of interactively setting the RT Video Out display mode.