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© National Instruments Corporation G-1 IMAQ Vision for Visual Basic User Manual
Glossary
Numbers
1D One-dimensional.
2D Two-dimensional.
3D Three-dimensional.
A
AIPD The National Instruments internal image file format used for saving
complex images and calibration information associated with an image
(extension APD).
alignment The process by which a machine vision application determines the location,
orientation, and scale of a part being inspected.
alpha channel The 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.
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.
arithmetic operators The image operations multiply, divide, add, subtract, and modulo.
array An 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.
B
b Bit. One binary digit, either 0 or 1.
B Byte. Eight related bits of data, an eight-bit binary number. Also denotes
the amount of memory required to store one byte of data.