National Instruments NI myRIO, Essentials Manual

Page: 151 / 163

F
Video Tutorial Links
F.1 Image Acquisition and Calibration
• Camera Setup Principles
1
– From the minimum feature size determine the
necessary camera-to-object distance to obtain the desired spatial resolution
and field-of-view (FOV).
•
Set Camera Defaults in NI-MAX
2
– Use NI-MAX to set the USB webcam
video mode (resolution and frame rate), select color (RGB) or grayscale
acquisition, set the camera attributes (brightness, contrast, focus, etc.), and
save as the default for all NI vision-related programs.
• Acquire Image in NI Vision Assistant
3
– Acquire a USB webcam image
within NI Vision Assistant; measure a distance on the image.
F.2 Stereo Vision
•
“Compute Depth Image” Example VI
4
– Demonstrate the “Compute
Depth Image” example VI included with the NI Vision installation that
illustrates how to measure depth with two stereo cameras.
• Configure Stereo Cameras
5
– Configure the “Vision Acquisition” Express
VIs of the “Calibrate Stereo Vision” example VI (included with the NI
Vision installation) to use your specific pair of webcams.
1
http://youtu.be/ul5sme31cMo
(9:16)
2
http://youtu.be/oTWHhMENsCg
(3:51)
3
http://youtu.be/wTJr8beDtvQ
(3:58)
4
http://youtu.be/TEihyEGrsqQ
(3:35)
5
http://youtu.be/iGqlBrg3DjM
(2:47)