Image layers can be weighted depending on their importance or suitability for the seg-
mentation result. The higher the weight assigned to an image layer, the more weight
will be assigned to that layer’s pixel information during the segmentation process, if it is
used. Consequently, image layers that do not contain the information intended for repre-
sentation by the image objects should be given little or no weight. For example, when
segmenting a geographical LANDSAT scene using multiresolution segmentation or spec-
tral difference segmentation, the segmentation weight for the spatially coarser thermal
layer should be set to 0 in order to avoid deterioration of the segmentation result by the
blurred transient between image objects of this layer.
1. In the Algorithm parameters area, expand the Image Layer weights list and set the
weight of the image layers to be considered by the algorithm. You can use both of
the following methods:
• Select an image layer and edit the weight value
• Select Image Layer weights and click the ellipsis button located inside the
value field to open the Image Layer Weights dialog box
2. Select an image layer in the list. To select multiple image layers press Ctrl.
3. Enter a new weight in the New value text box and click Apply.