Glossary
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National Instruments Corporation
G-9
IMAQ Vision for LabWindows/CVI User Manual
hue offset angle
The value added to all hue values so that the discontinuity occurs outside
the values of interest during analysis.
I
image
A two-dimensional light intensity function f (x, y) where x and y denote
spatial coordinates and the value f at any point (x, y) is proportional to the
brightness at that point.
image border
A user-defined region of pixels surrounding an image. Functions that
process pixels based on the value of the pixel neighbors require image
borders.
Image Browser
An image that contains thumbnails of images to analyze or process in a
vision application.
image buffer
Memory location used to store images.
image definition
See
image enhancement
The process of improving the quality of an image that you acquire from
a sensor in terms of signal-to-noise ratio, image contrast, edge definition,
and so on.
image file
A file containing pixel data and additional information about the image.
image format
Defines how an image is stored in a file. Usually composed of a header
followed by the pixel data.
image mask
A binary image that isolates parts of a source image for further processing.
A pixel in the source image is processed if its corresponding mask pixel has
a non-zero value. A source pixel whose corresponding mask pixel has a
value of 0 is left unchanged.
image palette
The gradation of colors used to display an image on screen, usually defined
by a color lookup table.
image processing
Encompasses various processes and analysis functions that you can apply
to an image.
image source
Original input image.
image understanding
A technique that interprets the content of the image at a symbolic level
rather than a pixel level.
