Chapter 4
Performing Particle Analysis
©
National Instruments Corporation
4-9
IMAQ Vision for LabWindows/CVI User Manual
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XXX
Normalized moment of inertia in the
x direction three times
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XXY
Normalized moment of inertia in the
x direction twice and the y direction
once
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XYY
Normalized moment of inertia in the
x direction once and the y direction
twice
IMAQ_MT_NORM_MOMENT_OF_INERTIA_YYY
Normalized moment of inertia in the
y direction three times
IMAQ_MT_NUMBER_OF_HOLES
Number of holes in the particle
IMAQ_MT_NUMBER_OF_HORIZ_SEGMENTS
Number of horizontal segments in the
particle
IMAQ_MT_NUMBER_OF_VERT_SEGMENTS
Number of vertical segments in the
particle
IMAQ_MT_ORIENTATION
Angle of the line that passes through
the particle center of mass about
which the particle has the lowest
moment of inertia
IMAQ_MT_PERIMETER
Length of the outer boundary of the
particle
IMAQ_MT_PARTICLE_AND_HOLES_AREA
Area of a particle that completely
covers the image
IMAQ_MT_RATIO_OF_EQUIVALENT_ELLIPSE_AXES
Equivalent ellipse major axis divided
by equivalent ellipse minor axis
IMAQ_MT_RATIO_OF_EQUIVALENT_RECT_SIDES
Equivalent rectangle long side
divided by equivalent rectangle
short side
IMAQ_MT_SUM_X
Sum of all x-coordinates in the
particle
IMAQ_MT_SUM_Y
Sum of all y-coordinates in the
particle
Table 4-1.
Particle Measurements (Continued)
Measurement
Description
