“…Image geometrical registration is widely used in many fields such as image processing [1, 2], computer vision [3, 4] and pattern recognition [5, 6]. The methods of image geometrical registration can be divided into rigid and non‐rigid registrations, and the rigid registration is mainly divided into two kinds: pixel‐ and feature‐based methods [7, 8]. Pixel information is used in the pixel‐based registration method, which is time‐consuming because of a large amount of calculation involved.…”