National Instruments IMAQ Vision for LabWindows TM /CVI - Manual (Page 48)

Chapter 4 Performing Particle Analysis
IMAQ Vision for LabWindows/CVI User Manual 4-6 ni.com
IMAQ_MT_EQUIVALENT_ELLIPSE_MAJOR_AXIS Length of the major axis of the ellipse
with the same perimeter and area as
the particle
IMAQ_MT_EQUIVALENT_ELLIPSE_MINOR_AXIS Length of the minor axis of the
ellipse with the same perimeter
and area as the particle
IMAQ_MT_EQUIVALENT_ELLIPSE_MINOR_AXIS_FERET Length of the minor axis of the
ellipse with the same area as the
particle, and major axis equal in
length to the max feret diameter
IMAQ_MT_EQUIVALENT_RECT_DIAGONAL Distance between opposite corners of
the rectangle with the same perimeter
and area as the particle
IMAQ_MT_EQUIVALENT_RECT_LONG_SIDE Longest side of the rectangle with
the same perimeter and area as the
particle
IMAQ_MT_EQUIVALENT_RECT_SHORT_SIDE Shortest side of the rectangle with
the same perimeter and area as the
particle
IMAQ_MT_EQUIVALENT_RECT_SHORT_SIDE_FERET Shortest side of the rectangle with the
same area as the particle, and longest
side equal in length to the max feret
diameter
IMAQ_MT_ELONGATION_FACTOR Max feret diameter divided by
equivalent rectangle short side (feret)
IMAQ_MT_FIRST_PIXEL_X X-coordinate of the highest, leftmost
particle pixel
IMAQ_MT_FIRST_PIXEL_Y Y-coordinate of the highest, leftmost
particle pixel
IMAQ_MT_HU_MOMENT_1 First Hu moment
IMAQ_MT_HU_MOMENT_2 Second Hu moment
IMAQ_MT_HU_MOMENT_3 Third Hu moment
IMAQ_MT_HU_MOMENT_4 Fourth Hu moment
Table 4-1. Particle Measurements (Continued)
Measurement Description