Intensity
Segment objects from measurements using intensities in the different bands/wavelengths
Parameters
Expression
Write expression. Band numbers are denoted b[N]
e.g. b1
and wavelengths are denoted w[N]
e.g. w1
. The following comparators can be used for the expression:
Area
Length
Width
Circumference
Regularity
Roundness
Angle
D1
D2
X
Y
MaxBorderDistance
BoundingBoxArea
Variable names that can be used in the expression:
MinValue
MaxValue
AvarageValue
MinWavelengthValue
MaxWavelengthValue
AverageWavelengthValue
Min area
The minimum number of pixels for an object to be included.
Max area
The maximum number of pixels for an object to be included.
If 0 no maximum area is defined.
Object filter
Use an expression to further exclude unwanted objects based on shape.
Properties that can be used for the Expression:
Area
Length
Width
Circumference
Regularity
Roundness
Angle
D1
D2
X
Y
MaxBorderDistance
BoundingBoxArea
Shrink
Takes away x numbers of pixels at the borders of the objects included in images.
Separate
Normal
Can have both separated and combined objects.
Separate adjacent objects
All objects are defined separately.
Merge all objects into one
All objects are defined as one.
Merge all objects per row
All objects per row segmentation are defined as one.
Merge all objects per column
All objects per column segmentation are defined as one.
Pretreatments
Apply one or more pretreatments, see Pretreatments
Example
Using band numbers
Expression: (b10 > 1.5 | b15 < 2) & b20 <= 1.2
Using wavelengths.
Expression: (w980 >1.5 | w1024 <2) & w1200 <=1.2
Use variables for the expression.
Expression: w980 > AvarageValue