Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium for image splicing are provided. In one aspect, a method includes obtaining at least two groups of to-be-spliced images and scanning information corresponding to the at least two groups of to-be-spliced images, determining an overlap area of the at least two groups of to-be-spliced images and a physical sequence of splicing according to the scanning information, registering the at least two groups of to-be-spliced images based on the overlap area to obtain a registration result, and splicing the at least two groups of registered to-be-spliced images according to the physical sequence of splicing and the registration result.