A visual effect in an image as a result of low brightness resolution which appears as bands of sharp, distinct, brightness change Very similar to banding
In digital facsimile, density step lines in the recorded copy resulting from analog-to-digital conversion when the object, i e , the original, has observable shades of gray between the smallest density steps of the digital system
Walking along the side of a hill, whilst maintaining the same height Sometimes done to avoid a rocky step in a ridge, or out of laziness, to avoid walking over a bump