KnowraHomogeneous coordinatesLinked fromLinked fromThe 28 pages that link to Homogeneous coordinates, each with the reason it gives.All 28Broader topic 2Related 23Compared with 3Projective transformationBroader topic: They let an invertible matrix act on points, including points at infinity.Projective dualityBroader topic: They encode projective points and hyperplanes in forms that duality can exchange.