1. An optical text recognition method, comprising the steps of: acquiring, with a camera, at least one set of multiple images of a document having texts thereon by adjusting scanning motion based on real-time feedback images of captured images, wherein said at least one set of multiple images comprise said captured images; determining whether two or more of said at least one set of multiple images of said document overlap, wherein each of said at least one set of multiple images comprise different parts of said document; combining said at least one set of multiple images via image fusion to form at least one merged image; processing each of said at least one merged image through single frame document recognition to produce at least one set of text and metadata of said at least one merged image.