1. A method of determining an amount of a mis-alignment in a direction of a first image of a scene, the first image captured by a first camera, the method comprising the steps of: defining a first line between a first point in the first image and a second point in the first image, the first line extending in the direction of the mis-alignment; defining a reference section in the scene to which the first image is being aligned, the reference section of the scene having a first reference image characteristic; identifying a first image characteristic at a first plurality of points along the first line in the first image; comparing the first image characteristic at each point of the first plurality of points along the first line with the first reference image characteristic, and determining the amount of the mis-alignment by determining a distance between a position of the first reference image characteristic of the reference section captured in the first image and the defined reference section in the scene; and defining at least one of a circular sampling path and a radial sampling path in the first image, wherein the circular sampling path defines a circular path between the first point and the second point and the radial sampling path passes through a centre point of the first image coincident with a corresponding point in the first image and extending along a radial line therefrom, the first line between the first and the second points in the first image being defined by one or more of the circular sampling path or the radial sampling path.