Coding pattern with optimal number of target elements in...

Registers – Records – Particular code pattern

Reexamination Certificate

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Details

C235S375000, C235S487000

Reexamination Certificate

active

08028925

ABSTRACT:
A substrate having a coding pattern disposed on a surface thereof is disclosed. The coding pattern has target elements defining a target grid. The target grid has cells, wherein neighboring cells share target elements. A plurality of data elements are contained in each cell. Tags are defined by a plurality of contiguous cells and each tag has respective local tag data encoded by a respective set of the data elements. Each tag has at least nine target elements, which facilitates accurate observation of a perspective distortion of the target elements.

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Dymetman, M., and Copperman, M., “Intelligent Paper in Electronic Publishing, Artist Imaging, and Digital Typography, Proceedings of EP '98”, Mar./Apr. 1998, Springer Verlag LNCS 1375, pp. 392-406.

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