1. A digital imaging and document verification system comprising: imaging sensors to capture images of a modified physical document; a data storage device to store the digital images; and a digital image processing circuit to: measure pixel parameters of pixels of a plurality of regions of the stored digital images of the modified physical document, wherein the pixel parameters include variations of pixel intensities in at least one of the plurality of regions; determine, from the pixel parameters, whether the modified physical document conforms to a predetermined verification pattern that is indicative of the modified physical document being modified according to predetermined guidelines; and verify the document if the modified physical document conforms to a predetermined verification pattern.