1. A system comprising: (a) a feature-detection circuit configured to extract at least one respective perceivable feature included in each digital image of a plurality of digital images, the each digital image of the plurality of digital images includes a respective portion of a region of interest of a surface; (b) a feature-matching circuit configured to determine a substantial correspondence between (x) an extracted perceivable feature included in a border region segment of a selected digital image of the plurality of digital images and (y) an extracted at least one respective perceivable feature included in each digital image of the plurality of digital images other than the selected digital image; (c) a data collection circuit configured to gather the determined substantial correspondences for the extracted perceivable feature included in the border region segment of the selected digital image; (d) an overlap-analysis circuit configured to generate data indicative of a border region-overlap status of the selected digital image, the data generated at least partially in response to the gathered determined substantial correspondences; (e) a list management circuit configured to add the data indicative of the determined border region-overlap status for the border region segment of the selected digital image to an omitted-coverage list; (f) an iteration control circuit configured to iteratively designate a next digital image from the plurality of digital images as the selected digital image until each digital image of the plurality of digital images has been designated, and initiate a processing of each of the iteratively designated next digital images by the feature-matching circuit, the data collection circuit, the overlap circuit, and the list management circuit; (g) a coverage-analysis circuit configured to identify a particular portion of the region of interest as likely not included in the plurality of digital images (hereafter “possible non-imaged portion of the region of interest”), the identifying the possible non-imaged portion of the region of interest at least partially based on the omitted-coverage list; and (h) a reporting circuit configured to output informational data indicative of the possible non-imaged portion of the region of interest.