National Instruments NI Vision NI PCI-1424, Руководство пользователя

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Glossary
© National Instruments Corporation G-3 NI PCI-1424 User Manual
L
LUT Look-up 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 look-up table.
M
memory buffer See buffer .
N
NI-IMAQ Driver software for National Instruments image acquisition hardware.
NVRAM Nonvolatile RAM. RAM that is not erased when a device loses power or is
turned off.
P
PCI Peripheral Component Interconnect. A high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA. PCI
offers a theoretical maximum transfer rate of 133 Mbytes/s.
pixel Picture element. The smallest division that makes up the video scan line;
for display on a computer monitor, a pixel’s optimum dimension is square
(aspect ratio of 1:1, or the width equal to the height).
pixel clock Divides the incoming horizontal video line into pixels.
R
real time A property of an event or system in which data is processed as it is acquired
instead of being accumulated and processed at a later time.
ribbon cable A flat cable in which the conductors are side by side.
ROI Region of interest. An area of the image from a window displaying the
image.