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Glossary
© National Instruments Corporation G-5 NI-IMAQ for IEEE-1394 Cameras User Manual
luma Thebrightness information in the video picture. The luma signal amplitude
varies in proportion to the brightness of the video signal and corresponds
exactly to the monochrome picture.
luminance See luma.
LUT Lookup table. Table containing values used to transform the gray-level
values of an image. For each gray-level value in the image, the
corresponding new value is obtained from the lookup table.
M
M (1) Mega, the standard metric prefix for 1 million or 10
6
,whenusedwith
units of measure such as volts and hertz (2) Mega, the prefix for 1,048,576,
or 2
20
, when used with B to quantify data or computer memory.
MB Megabyte of memory.
Mbytes/s A unit for data transfer that means 1 million or 10
6
bytes/s.
memory buffer See buffer.
memory window Continuous blocks of memory that can be accessed quickly by changing
addresses on the local processor.
MSB Most significant bit.
MTBF Mean time between failure.
mux Multiplexer. A switching device with multiple inputs that selectively
connects one of its inputs to its output.
N
NI-IMAQ Driver software for National Instruments IMAQ hardware.
noninterlaced A video frame where all the lines are scanned sequentially, instead of
divided into two frames as in an interlaced video frame.