1. A computer-implemented method for identifying a field in each of a plurality of form images, the method comprising: receiving the plurality of form images, each form image including a plurality of strokes; generating, with one or more processors, an overlay of the plurality of form images; identifying a group of strokes from the overlay of the plurality of images; generating a field bounding box encompassing the group of strokes, the field bounding box representing the field in each of the plurality of the form images; and generating a field image from each of the plurality of form images based on the field bounding box.