National Instruments IMAQTM User Manual page 101

Glossary
connectivity-4
connectivity-8
contrast
convex hull
convex hull function
convolution
convolution kernel
D
Danielsson function
determinism
digital image
dilation
driver
E
edge
edge contrast
edge detection
IMAQ Vision for Visual Basic User Manual
Only pixels adjacent in the horizontal and vertical directions are considered
neighbors.
All adjacent pixels are considered neighbors.
A constant multiplication factor applied to the luma and chroma
components of a color pixel in the color decoding process.
The smallest convex polygon that can encapsulate a particle.
Computes the convex hull of objects in a binary image.
See linear filter.
2D matrices, or templates, used to represent the filter in the filtering
process. The contents of these kernels are a discrete two-dimensional
representation of the impulse response of the filter that they represent.
Similar to the distance functions, but with more accurate results.
A characteristic of a system that describes how consistently it can respond
to external events or perform operations within a given time limit.
An image f (x, y) that has been converted into a discrete number of pixels.
Both spatial coordinates and brightness are specified.
Increases the size of an object along its boundary and removes tiny holes in
the object.
Software that controls a specific hardware device, such as an IMAQ or
DAQ device.
Defined by a sharp transition in the pixel intensities in an image or along an
array of pixels.
The difference between the average pixel intensity before and the average
pixel intensity after the edge.
Any of several techniques to identify the edges of objects in an image.
G-4 ni.com