National Instruments IMAQ Vision for Measurement Studio - Manual (Page 88)

© National Instruments Corporation G-1 IMAQ Vision for LabWindows/CVI User Manual
Glossary
Numbers/Symbols
1D One-dimensional.
2D Two-dimensional.
3D Three-dimensional.
A
AIPD National Instruments proprietary image file format used for saving
complex images and calibration information pertaining to step and
spatial units (extension APD).
alignment The process by which a machine vision application determines the location,
orientation, and scale of a part being inspected.
alpha channel Channel used to code extra information, such as gamma correction, about
a color image. The alpha channel is stored as the first byte in the four-byte
representation of an RGB pixel.
annulus A region of interest that resembles a ring or partial ring.
area (1) A rectangular portion of an acquisition window or frame that is
controlled and defined by software. (2) The size of an object in pixels or
user-defined units.
area threshold Detects objects based on their size, which can fall within a user-specified
range.
arithmetic operators The image operations multiply, divide, add, subtract, and remainder.
array Ordered, indexed set of data elements of the same type.
auto-median function A function that uses dual combinations of opening and closing operations
to smooth the boundaries of objects.