Allows to automatically extract object contours from the binary image.
Minimum and maximum object dimensions: the minimum and/or maximum area or length of an object. Objects with smaller or larger area or length will be ignored.
Exclude objects on image border: when this option is selected, objects that are on the border of the image will be ignored (since the object is not completely 'visible', area and perimeter of the object cannot be calculated accurately).
Objects can contain other objects: select this option when objects are hollow and can contain other objects.
Objects are circular: select this option when the objects are (strictly) circular.
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