National Instruments NI-IMAQ - Manual (Page 50)

Glossary
NI-IMAQ for IEEE-1394 Cameras User Manual G-8 ni.com
V
V Volts.
VI Virtual Instrument. (1) A combination of hardware and/or software
elements, typically used with a PC, that has the functionality of a classic
stand-alone instrument (2) A LabVIEW software module (VI), which
consists of a front panel user interface and a block diagram program.
Y
YUV A representation of a color image used for the coding of NTSC or PAL
video signals. The luma information is called Y, while the chroma
information is represented by two components, U and V representing the
coordinates in a color plane.