Figure 4-9. intensity graph for image display – National Instruments NI-IMAQ User Manual

Page 36

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Chapter 4

Programming with NI-IMAQ for 1394 VIs

NI-IMAQ for IEEE-1394 Cameras User Manual

4-10

ni.com

Your intensity graph now should appear similar to the image shown in
Figure 4-9. For more information on the Intensity Graph, consult your
LabVIEW documentation

Figure 4-9. Intensity Graph for Image Display

Use the IMAQ ImageToArray VI to copy an image from an image buffer
into a LabVIEW array. Then you can wire this array directly to an Intensity
Graph for display. Figure 4-10 illustrates using an Intensity Graph to
display an image acquired using IMAQ1394 Snap.

Figure 4-10. Displaying an Image Using an Intensity Graph

To display an RGB image on a picture control, place the picture control on
the front panel of your VI. Use the IMAQ ColorImageToArray VI to copy
an image from an image buffer into a LabVIEW array. Then you can wire
this array to the Draw True-Color Pixmap VI. Wire the new image output
from Draw True-Color Pixmap to the picture control indicator. For more
information on the picture control, consult the LabVIEW online reference.
Figure 4-11 illustrates using a picture control to display an RGB image
acquired with the IMAQ1394 Snap VI.

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