1. A method for enhancing extraction of image data subsequently applied to distinct frame boxes of halftone patterns of alternating high (white) and low (dark) pixellated regions, comprising the steps of: sharpening said image data using a convolution with at least one mask; morphologically closing on said image data with at least one structured element; thresholding said morphologically closed image into a binary image; repeatedly lowering said threshold so that, as more of said pixellated regions become white, boxes of said frame are erased along with one or more spurious connected components of said image; and electronically scanning said image to eliminate remaining halftone regions.