1. A method for defining edge detection parameters in a machine vision inspection system user interface, the method comprising: providing an edge location video tool having a plurality of edge detection parameters; defining a region of interest (ROI) for the edge location video tool, including at least a first respective edge feature in the region of interest; automatically determining a plurality of candidate parameter combinations of the plurality of edge detection parameters, wherein respective candidate parameter combinations are usable to detect respective edge features in the region of interest; and operating the user interface to simultaneously display a plurality of respective candidate parameter combination representations corresponding to the respective candidate parameter combinations usable to detect respective edge features in the region of interest, wherein the user interface is configured to allow a user to perform a parameter combination selection action relative to the simultaneously displayed plurality of respective candidate parameter combination representations, the user selection action resulting in a selection of a combination of edge detection parameters that govern operation of the edge location video tool in the defined region of interest.