National Instruments IMAQ Vision for LabWindows TM /CVI - Manual (Page 49)

Chapter 4 Performing Particle Analysis
© National Instruments Corporation 4-7 IMAQ Vision for LabWindows/CVI User Manual
IMAQ_MT_HU_MOMENT_5 Fifth Hu moment
IMAQ_MT_HU_MOMENT_6 Sixth Hu moment
IMAQ_MT_HU_MOMENT_7 Seventh Hu moment
IMAQ_MT_HEYWOOD_CIRCULARITY_FACTOR Perimeter divided by the
circumference of a circle
with the same area
IMAQ_MT_HOLES_PERIMETER Sum of the perimeters of each hole in
the particle
IMAQ_MT_HYDRAULIC_RADIUS Particle area divided by the particle
perimeter
IMAQ_MT_HOLES_AREA Sum of the areas of each hole in the
particle
IMAQ_MT_IMAGE_AREA Area of the image
IMAQ_MT_MAX_FERET_DIAMETER Distance between the start and end of
the line segment connecting the two
perimeter points that are the furthest
apart
IMAQ_MT_MAX_FERET_DIAMETER_END_X X-coordinate of the end of the
line segment connecting the two
perimeter points that are the furthest
apart
IMAQ_MT_MAX_FERET_DIAMETER_END_Y Y-coordinate of the end of the
line segment connecting the two
perimeter points that are the furthest
apart
IMAQ_MT_MAX_FERET_DIAMETER_ORIENTATION Angle of the line segment connecting
the two perimeter points that are the
furthest apart
IMAQ_MT_MAX_FERET_DIAMETER_START_X X-coordinate of the start of the
line segment connecting the two
perimeter points that are the furthest
apart
Table 4-1. Particle Measurements (Continued)
Measurement Description