| 摘要 |
<p>Human and machine readability of pre-printed forms that have been completed with user data is impeded where the user data overlaps zone descriptions, constraint boxes or other markings of the pre-printed form. A 'form fracturing' methodology is described that includes processing the composite-image data so as to attach one or more shared pixels to a non-diagonally adjacent data pixel. The remaining form pixels can be removed, resulting in at least a useful approximation and often a complete recovery of the user data. Where blank-form data is not available, a 'virtual dropout' technique allows for recovering user data from a pre-printed form using limited speckle size and configurations, constraining gray-scale value, or a combination of the two. The disclosed methodologies are conveniently implemented in software on any digital processor.</p> |
