1. An information processing apparatus, comprising: an image data obtaining unit configured to obtain image data generated by scanning a confirmation/correction form on a recording medium; a workflow definition obtaining unit configured to obtain a workflow definition of a workflow that includes a workflow step corresponding to the recording medium; a form definition obtaining unit configured to obtain a form definition of the confirmation/correction form corresponding to the workflow step based on the workflow definition; a field image extracting unit configured to extract a field image of a field of the confirmation/correction form from the image data based on the form definition; and a handwriting image extracting unit configured to remove a previous handwriting image and extract a current handwriting image from the field image if the field image contains both the previous handwriting image and the current handwriting image, and to extract the current handwriting image from the field image if the field image contains only the current handwriting image.