Close-ups of an NACL/NACR seam treated by two methods. (a) Default ASP lronac2mosaic.py mosaicking leaves a visible seam. (b) Our seam-aware registration plus local ratio normalization produces a seamless merge. The width of each panel is 260 pixels (~224 m). Orange arrows indicate small craters straddling the seam whose shapes are corrected after the NACR transform. Black arrows show a horizontal (sample) position of the same seam of each mosaic. An image coordinate of the upper left corner pixel (sample, line) is (2340, 17685). LROC NAC ID M131418183 (a CR1 source image).