Method and apparatus for decoding unresolved profiles produced f

Details Method and apparatus for decoding unresolved profiles produced f Method and apparatus for decoding unresolved profiles produced f

1996-12-03

1998-08-25

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235463, 235470, G06K 710

Patent

active

057985138

ABSTRACT:
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 boundaries are determined, and the widths of resolved elements are determined at the closure boundary. The type of resolved element is determined based on its measured width. Thereafter, a unit distance is determined for 1-wide narrow elements unresolved in the profile. Based on the unit distance and the width of two adjacent resolved elements, a matrix is constructed for determining the number of narrow elements unresolved between two resolved elements. Based on the measured center distances, the resolved element widths and the matrix, all of the unresolved narrow elements are identified in the profile and the profile is subsequently decoded.

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