Chapter 4
Performing Particle Analysis
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National Instruments Corporation
4-5
IMAQ Vision for LabWindows/CVI User Manual
IMAQ_MT_BOUNDING_RECT_LEFT
X-coordinate of the leftmost particle
point
IMAQ_MT_BOUNDING_RECT_RIGHT
X-coordinate of the rightmost
particle point
IMAQ_MT_BOUNDING_RECT_HEIGHT
Distance between the y-coordinate
of highest particle point and the
y-coordinate of the lowest particle
point
IMAQ_MT_BOUNDING_RECT_WIDTH
Distance between the x-coordinate
of the leftmost particle point and the
x-coordinate of the rightmost particle
point
IMAQ_MT_BOUNDING_RECT_DIAGONAL
Distance between opposite corners of
the bounding rectangle
IMAQ_MT_CENTER_OF_MASS_X
X-coordinate of the point
representing the average position
of the total particle mass assuming
every point in the particle has a
constant density
IMAQ_MT_CENTER_OF_MASS_Y
Y-coordinate of the point
representing the average position
of the total particle mass assuming
every point in the particle has a
constant density
IMAQ_MT_COMPACTNESS_FACTOR
Area divided by the product of
bounding rectangle width and
bounding rectangle height
IMAQ_MT_CONVEX_HULL_AREA
Area of the smallest convex polygon
containing all points in the particle
IMAQ_MT_CONVEX_HULL_PERIMETER
Perimeter of the smallest convex
polygon containing all points in
the particle
Table 4-1.
Particle Measurements (Continued)
Measurement
Description
