MeasurementType

NI Vision for LabWindows/CVI Function

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MeasurementType

Various measurements that can be taken on a particle. Refer to the NI Vision Concepts Manual for further discussion of these measurements.

Elements

Name

Value

Description

IMAQ_MT_CENTER_OF_MASS_X 0 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 1 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_FIRST_PIXEL_X 2 X-coordinate of the highest, leftmost particle pixel.
IMAQ_MT_FIRST_PIXEL_Y 3 Y-coordinate of the highest, leftmost particle pixel.
IMAQ_MT_BOUNDING_RECT_LEFT 4 X-coordinate of the leftmost particle point.
IMAQ_MT_BOUNDING_RECT_TOP 5 Y-coordinate of highest particle point.
IMAQ_MT_BOUNDING_RECT_RIGHT 6 X-coordinate of the rightmost particle point.
IMAQ_MT_BOUNDING_RECT_BOTTOM 7 Y-coordinate of the lowest particle point.
IMAQ_MT_MAX_FERET_DIAMETER_START_X 8 X-coordinate of the start of the line segment connecting the two perimeter points that are the furthest apart.
IMAQ_MT_MAX_FERET_DIAMETER_START_Y 9 Y-coordinate of the start of the line segment connecting the two perimeter points that are the furthest apart.
IMAQ_MT_MAX_FERET_DIAMETER_END_X 10 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 11 Y-coordinate of the end of the line segment connecting the two perimeter points that are the furthest apart.
IMAQ_MT_MAX_HORIZ_SEGMENT_LENGTH_LEFT 12 X-coordinate of the leftmost pixel in the longest row of contiguous pixels in the particle.
IMAQ_MT_MAX_HORIZ_SEGMENT_LENGTH_RIGHT 13 X-coordinate of the rightmost pixel in the longest row of contiguous pixels in the particle.
IMAQ_MT_MAX_HORIZ_SEGMENT_LENGTH_ROW 14 Y-coordinate of all of the pixels in the longest row of contiguous pixels in the particle.
IMAQ_MT_BOUNDING_RECT_WIDTH 16 Distance between the x-coordinate of the leftmost particle point and the x-coordinate of the rightmost particle point.
IMAQ_MT_BOUNDING_RECT_HEIGHT 17 Distance between the y-coordinate of highest particle point and the y-coordinate of the lowest particle point.
IMAQ_MT_BOUNDING_RECT_DIAGONAL 18 Distance between opposite corners of the bounding rectangle.
IMAQ_MT_PERIMETER 19 Length of the outer boundary of the particle.
IMAQ_MT_CONVEX_HULL_PERIMETER 20 Perimeter of the smallest convex polygon containing all points in the particle.
IMAQ_MT_HOLES_PERIMETER 21 Sum of the perimeters of each hole in the particle.
IMAQ_MT_MAX_FERET_DIAMETER 22 Distance between the start and end of the line segment connecting the two perimeter points that are the furthest apart.
IMAQ_MT_EQUIVALENT_ELLIPSE_MAJOR_AXIS 23 Length of the major axis of the ellipse with the same perimeter and area as the particle.
IMAQ_MT_EQUIVALENT_ELLIPSE_MINOR_AXIS 24 Length of the minor axis of the ellipse with the same perimeter and area as the particle.
IMAQ_MT_EQUIVALENT_ELLIPSE_MINOR_AXIS_FERET 25 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_LONG_SIDE 26 Longest side of the rectangle with the same perimeter and area as the particle.
IMAQ_MT_EQUIVALENT_RECT_SHORT_SIDE 27 Shortest side of the rectangle with the same perimeter and area as the particle.
IMAQ_MT_EQUIVALENT_RECT_DIAGONAL 28 Distance between opposite corners of the rectangle with the same perimeter and area as the particle.
IMAQ_MT_EQUIVALENT_RECT_SHORT_SIDE_FERET 29 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_AVERAGE_HORIZ_SEGMENT_LENGTH 30 Average length of a horizontal segment in the particle.
IMAQ_MT_AVERAGE_VERT_SEGMENT_LENGTH 31 Average length of a vertical segment in the particle.
IMAQ_MT_HYDRAULIC_RADIUS 32 The particle area divided by the particle perimeter.
IMAQ_MT_WADDEL_DISK_DIAMETER 33 Diameter of a disk with the same area as the particle.
IMAQ_MT_AREA 35 Area of the particle.
IMAQ_MT_HOLES_AREA 36 Sum of the areas of each hole in the particle.
IMAQ_MT_PARTICLE_AND_HOLES_AREA 37 Area of a particle that completely covers the image.
IMAQ_MT_CONVEX_HULL_AREA 38 Area of the smallest convex polygon containing all points in the particle.
IMAQ_MT_IMAGE_AREA 39 Area of the image.
IMAQ_MT_NUMBER_OF_HOLES 41 Number of holes in the particle.
IMAQ_MT_NUMBER_OF_HORIZ_SEGMENTS 42 Number of horizontal segments in the particle.
IMAQ_MT_NUMBER_OF_VERT_SEGMENTS 43 Number of vertical segments in the particle.
IMAQ_MT_ORIENTATION 45 The angle of the line that passes through the particle Center of Mass about which the particle has the lowest moment of inertia.
IMAQ_MT_MAX_FERET_DIAMETER_ORIENTATION 46 The angle of the line segment connecting the two perimeter points that are the furthest apart.
IMAQ_MT_AREA_BY_IMAGE_AREA 48 Percentage of the particle Area covering the Image Area.
IMAQ_MT_AREA_BY_PARTICLE_AND_HOLES_AREA 49 Percentage of the particle Area in relation to its Particle and Holes Area.
IMAQ_MT_RATIO_OF_EQUIVALENT_ELLIPSE_AXES 50 Equivalent Ellipse Major Axis divided by Equivalent Ellipse Minor Axis.
IMAQ_MT_RATIO_OF_EQUIVALENT_RECT_SIDES 51 Equivalent Rect Long Side divided by Equivalent Rect Short Side.
IMAQ_MT_ELONGATION_FACTOR 53 Max Feret Diameter divided by Equivalent Rect Short Side (Feret).
IMAQ_MT_COMPACTNESS_FACTOR 54 Area divided by the product of Bounding Rect Width and Bounding Rect Height.
IMAQ_MT_HEYWOOD_CIRCULARITY_FACTOR 55 Perimeter divided by the circumference of a circle with the same area.
IMAQ_MT_TYPE_FACTOR 56 Factor relating area to moment of inertia.
IMAQ_MT_SUM_X 58 The sum of all x-coordinates in the particle.
IMAQ_MT_SUM_Y 59 The sum of all y-coordinates in the particle.
IMAQ_MT_SUM_XX 60 The sum of all x-coordinates squared in the particle.
IMAQ_MT_SUM_XY 61 The sum of all x-coordinates times y-coordinates in the particle.
IMAQ_MT_SUM_YY 62 The sum of all y-coordinates squared in the particle.
IMAQ_MT_SUM_XXX 63 The sum of all x-coordinates cubed in the particle.
IMAQ_MT_SUM_XXY 64 The sum of all x-coordinates squared times y-coordinates in the particle.
IMAQ_MT_SUM_XYY 65 The sum of all x-coordinates times y-coordinates squared in the particle.
IMAQ_MT_SUM_YYY 66 The sum of all y-coordinates cubed in the particle.
IMAQ_MT_MOMENT_OF_INERTIA_XX 68 The moment of inertia in the x-direction twice.
IMAQ_MT_MOMENT_OF_INERTIA_XY 69 The moment of inertia in the x and y directions.
IMAQ_MT_MOMENT_OF_INERTIA_YY 70 The moment of inertia in the y-direction twice.
IMAQ_MT_MOMENT_OF_INERTIA_XXX 71 The moment of inertia in the x-direction three times.
IMAQ_MT_MOMENT_OF_INERTIA_XXY 72 The moment of inertia in the x-direction twice and the y-direction once.
IMAQ_MT_MOMENT_OF_INERTIA_XYY 73 The moment of inertia in the x-direction once and the y-direction twice.
IMAQ_MT_MOMENT_OF_INERTIA_YYY 74 The moment of inertia in the y-direction three times.
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XX 75 The normalized moment of inertia in the x-direction twice.
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XY 76 The normalized moment of inertia in the x- and y-directions.
IMAQ_MT_NORM_MOMENT_OF_INERTIA_YY 77 The normalized moment of inertia in the y-direction twice.
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XXX 78 The normalized moment of inertia in the x-direction three times.
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XXY 79 The normalized moment of inertia in the x-direction twice and the y-direction once.
IMAQ_MT_NORM_MOMENT_OF_INERTIA_XYY 80 The normalized moment of inertia in the x-direction once and the y-direction twice.
IMAQ_MT_NORM_MOMENT_OF_INERTIA_YYY 81 The normalized moment of inertia in the y-direction three times.
IMAQ_MT_HU_MOMENT_1 82 The first Hu moment.
IMAQ_MT_HU_MOMENT_2 83 The second Hu moment.
IMAQ_MT_HU_MOMENT_3 84 The third Hu moment.
IMAQ_MT_HU_MOMENT_4 85 The fourth Hu moment.
IMAQ_MT_HU_MOMENT_5 86 The fifth Hu moment.
IMAQ_MT_HU_MOMENT_6 87 The sixth Hu moment.
IMAQ_MT_HU_MOMENT_7 88 The seventh Hu moment.
IMAQ_MEASUREMENT_TYPE_SIZE_GUARD 0xFFFFFFFF Reserved
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