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A goal for future research is to combine line and edge extraction into a single operator. This is useful for applications that 
require lines as well as edges as low-level primitives. By extracting both types of features simultaneously, the description 
of a scene will be simplified since edges corresponding to lines are not returned as edges anymore, but instead are included 
in the line width. Thus, a later reasoning step can be simplified since it will not have to sort out the edges that correspond 
to lines. 
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