Homography is a mathematical concept used in computer vision and image processing to describe the relationship between two images of the same scene taken from different viewpoints. It represents a transformation that maps points in one image to corresponding points in another, allowing for tasks like image stitching and perspective correction. In practical applications, homography helps align images, enabling the creation of panoramic views or the analysis of object movements. By using a homography matrix, which contains the necessary parameters for this transformation, algorithms can effectively manipulate and interpret visual data from various angles.