A Simple Guide to Erode and Dilate Filters

Erosion and Dilation are two fundamental operations in mathematical morphology used primarily in image processing, computer vision, and VFX compositing to alter the shapes and boundaries of objects within an image. They act as the building blocks for more advanced cleanup techniques. 1. Core Mechanics

Both operations use a small matrix called a structuring element (or kernel), which slides across the image to evaluate pixels in a local neighborhood. Raster erode/dilate – FME Community