Edge detection is a fundamental tool in image processing, machine vision and computer vision, particularly in the areas of feature detection and feature extraction, which aim at identifying points in a digital image at which the image brightness changes sharply or, more formally, has discontinuities. The same problem of finding discontinuities in 1D signals is known as step detection.
Read more about Edge Detection: Motivations, Edge Properties, A Simple Edge Model, Why Edge Detection Is A Non-trivial Task, Approaches
Famous quotes containing the word edge:
“They will tell me I talk about things I have never experienced but only dreamed—to which I might reply: it is a lovely thing to dream such dreams! And besides, our dreams are much more our experiences than we believe—we must relearn about dreams! If I have dreamed thousands of times about flying—would you not believe that when I am awake I also possess feelings and needs giving me an edge on most people—and...”
—Friedrich Nietzsche (1844–1900)