National Instruments IMAQTM User Manual page 99

Glossary
barycenter
binary image
binary morphology
binary threshold
bit depth
blurring
BMP
border function
brightness
buffer
IMAQ Vision for Visual Basic User Manual
The grayscale value representing the centroid of the range of an image's
grayscale values in the image histogram.
An image in which the objects usually have a pixel intensity of 1 (or 255)
and the background has a pixel intensity of 0.
Functions that perform morphological operations on a binary image.
The separation of an image into objects of interest (assigned a pixel value
of 1) and background (assigned pixel values of 0) based on the intensities
of the image pixels.
The number of bits (n) used to encode the value of a pixel. For a given n,
n
a pixel can take 2 different values. For example, if n equals 8, a pixel can
take 256 different values ranging from 0 to 255. If n equals 16, a pixel can
take 65,536 different values ranging from 0 to 65,535 or –32,768 to 32,767.
Reduces the amount of detail in an image. Blurring commonly occurs
because the camera is out of focus. You can blur an image intentionally by
applying a lowpass frequency filter.
Bitmap. An image file format commonly used for 8-bit and color images.
BMP images have the file extension BMP.
Removes objects (or particles) in a binary image that touch the image
border.
(1) A constant added to the red, green, and blue components of a color pixel
during the color decoding process.
(2) The perception by which white objects are distinguished from gray and
light objects from dark objects.
Temporary storage for acquired data.
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