Fractal algorithms are algorithms used in creating computer-generated images. Using either an iterative or recursive process, simple geometric shapes are divided and replaced by smaller versions of themselves.
Seven of Nine used fractal algorithms in conjunction with Borg sensors to locate "funnels" which the USS Voyager could use to escape the Void. (VOY: "The Void") When Dr. Lewis Zimmerman used a fractal algorithm to realign The Doctor's holographic matrix after it started to degrade while on Jupiter Station, it was mentioned that they are "notoriously unstable in the hands of a novice". (VOY: "Life Line")