Granularity

Term describing limits of accuracy or resolution. For example, in editing the granularity of uncompressed component video is one frame; it can be cut on any frame boundary. The granularity of long GOP MPEG-2 is about half a second; about 12 or 15 frames for 25 or 30 f/s television. In a digital imaging system the granularity of brightness is the minimum change per sample, corresponding to the effect of one LSB change.