A method and apparatus for decoding profiles which fail to resolve narrow elements in machine-readable symbols formed as relief patterns, first begins by identifying which elements in the profile are resolved. Second, the distances between the centers of the resolved elements are determined. Third, closure...http://www.google.de/patents/US6152370?utm_source=gb-gplus-sharePatent US6152370 - Method and apparatus for decoding unresolved profiles produced from relief formed symbols
