How to Manually Split an Image Object
If you ever encounter an image object that just does not represent the object you are trying to extract, despite adjustments to segmentation algorithms and reshaping approaches, eCognition does offer a “Plan B”, so to say.
There are several options available to manually alter an image object - one of them is the tool Cut Object Manually. In the example below, the object containing primarily ground also includes part of the building. So, I am going to split the object along the building edge manually. To do this:
- Open the Manual Editing Toolbar
- Select the Cut Object Manually tool from the toolbar
- Select the image object you would like to split
- Draw a line where you want to split the object and double-click to complete - a tip here is to draw the line so it overlaps the edges of the object you are splitting. The splitting line will automatically snap to the pixel edges - it is not possible to split a pixel.
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