Homography

Homography is a mathematical concept used to describe how one image or view can be transformed into another, relating corresponding points between two images taken from different angles or perspectives. Imagine looking at a flat surface, like a painting on a wall, from different positions—you see the same painting but with different shapes or angles. Homography captures these changes, enabling us to map points from one image onto another accurately. This is essential in computer vision tasks such as image stitching, augmented reality, and object recognition, helping machines understand how different views relate to the same scene.