The translation-rotation rectification alignment process by which two images of like geometries and of the SAME set of objects are positioned coincident with respect to one another SO that corresponding elements of the same Ground area appear in the same place on the registered image. In this manner, the corresponding grey shades of the two images at any (x, y) coordinate or Resolution cell will represent the sensor output for the some object over the full image Frame being registered. In Digital registration, the digital grids also must be superimposed at the same time the ground elements are superimposed.