1. A method of image navigation of an input image by edge registration, the method comprising: generating a reference image kernel having borders embracing edges that conform to edges of a reference image and image intensities of the reference image kernel internal to the borders increase with decreasing distance from the edges embraced thereby, the reference image indicating a geographic location of a feature therein; computing a registration score by cross-correlating the image intensities of the reference image kernel with image intensities of edges in the input image; assigning the geographic location of the feature in the reference image to the feature in the input image responsive to the registration score meeting a registration criterion; and storing the input image of the feature with the geographic location thereof in a memory device.