System and method for clean document reconstruction from annotated document images

摘要

A computer-implemented method and system for reconstructing a clean document from annotated document images and/or extracting annotations therefrom are provided. The method includes receiving (S200) a set of at least two annotated document images into computer memory, selecting (S300) a representative image from the set of annotated document images, performing (S400) a global alignment on each of the set of annotated document images with respect to the selected representative image, and forming (S600) a consensus document image based at least on the aligned annotated document images. A clean document based at least on the consensus document image is then formed which can be used for extracting the annotations.