IEdge detection is a fundamental image processing technique for identifying points in an image where brightness changes sharply, indicating boundaries of objects. Common edge detectors (operators) include Sobel, Canny, Prewitt, and Laplace. For example, the Canny edge detector applies Gaussian smoothing, finds intensity gradients, and then traces along gradient peaks while applying non-maximum suppression and hysteresis thresholding to form thin, clean edges. The output is typically a binary image highlighting where edges (object outlines, surface markings, etc.) are. Edge detection is often an early step in computer vision pipelines, aiding tasks like shape detection, segmentation, and object recognition by reducing data to the most informative pixels (the edges).