# 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`